)]}'
{
  "log": [
    {
      "commit": "bbb8d343affd21850849fa4d41bf91c7527a3d04",
      "tree": "8d958286b21228673677668e09ed185602568eee",
      "parents": [
        "b901d40c970e6db319fe1f8d84db2b9684b6c9bf"
      ],
      "author": {
        "name": "Harvey Harrison",
        "email": "harvey.harrison@gmail.com",
        "time": "Mon Apr 28 02:13:46 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:27 2008 -0700"
      },
      "message": "alpha: remove remaining __FUNCTION__ occurrences\n\n__FUNCTION__ is gcc-specific, use __func__\n\nThe change in pci-iommu,c should be safe as arena has not been assigned\nwhen we get to this point.\n\nSome were within #if 0 blocks, have changed them and left the blocks\nas they appear to be debugging infrastructure.\n\nA #define FN __FUNCTION__ was removed and occurances of FN were replaced\nwith __func__ as well.\n\nSigned-off-by: Harvey Harrison \u003charvey.harrison@gmail.com\u003e\nCc: Ivan Kokshaysky \u003cink@jurassic.park.msu.ru\u003e\nCc: Richard Henderson \u003crth@twiddle.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "b901d40c970e6db319fe1f8d84db2b9684b6c9bf",
      "tree": "caa02eae1eb20eafca3af9d3bd3524be5ad82c16",
      "parents": [
        "1236cc3cf8c69bd316c940b2e94f91b3795f97fe"
      ],
      "author": {
        "name": "Jim Meyering",
        "email": "jim@meyering.net",
        "time": "Mon Apr 28 02:13:44 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:27 2008 -0700"
      },
      "message": "alpha: handle kcalloc failure\n\narch/alpha/kernel/module.c (module_frob_arch_sections): Handle kcalloc failure.\n\nSigned-off-by: Jim Meyering \u003cmeyering@redhat.com\u003e\nCc: Richard Henderson \u003crth@twiddle.net\u003e\nCc: Ivan Kokshaysky \u003cink@jurassic.park.msu.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "1236cc3cf8c69bd316c940b2e94f91b3795f97fe",
      "tree": "c33374ffa89d34f901d91888851970071700c38d",
      "parents": [
        "30aa4faf62b2dd9b239ae06ca7a85f1d36d7ef25"
      ],
      "author": {
        "name": "Serge E. Hallyn",
        "email": "serue@us.ibm.com",
        "time": "Mon Apr 28 02:13:43 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:27 2008 -0700"
      },
      "message": "smack: use cap_task_prctl\n\nWith the introduction of per-process securebits, the capabilities-related\nprctl callbacks were moved into cap_task_prctl().  Have smack use\ncap_task_prctl() so that PR_SET_KEEPCAPS is defined.\n\nSigned-off-by: Serge E. Hallyn \u003cserue@us.ibm.com\u003e\nAcked-by: Casey Schaufler \u003ccasey@schaufler-ca.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "30aa4faf62b2dd9b239ae06ca7a85f1d36d7ef25",
      "tree": "37eb2c4fa1195f668d1d3a16653bdc93da5f5e6b",
      "parents": [
        "55d00ccfb336b4f85a476a24e18c17b2eaff919e"
      ],
      "author": {
        "name": "Casey Schaufler",
        "email": "casey@schaufler-ca.com",
        "time": "Mon Apr 28 02:13:43 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:27 2008 -0700"
      },
      "message": "smack: make smk_cipso_doi() and smk_unlbl_ambient()\n\nThe functions smk_cipso_doi and smk_unlbl_ambient are not used outside\nsmackfs.c and should hence be static.\n\nSigned-off-by: Casey Schaufler \u003ccasey@schaufler-ca.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "55d00ccfb336b4f85a476a24e18c17b2eaff919e",
      "tree": "5be259b88f5cfe17206ad20dcb11929dd4a40781",
      "parents": [
        "c60264c494a119cd3a716a22edc0137b11de6d1e"
      ],
      "author": {
        "name": "Serge E. Hallyn",
        "email": "serue@us.ibm.com",
        "time": "Mon Apr 28 02:13:42 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:27 2008 -0700"
      },
      "message": "root_plug: use cap_task_prctl\n\nWith the introduction of per-process securebits, the capabilities-related\nprctl callbacks were moved into cap_task_prctl().  Have root_plug use\ncap_task_prctl() so that PR_SET_KEEPCAPS is defined.\n\nSigned-off-by: Serge E. Hallyn \u003cserue@us.ibm.com\u003e\nAcked-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "c60264c494a119cd3a716a22edc0137b11de6d1e",
      "tree": "db985b1529a6a136a7f439a9a557bcb80278e471",
      "parents": [
        "3898b1b4ebff8dcfbcf1807e0661585e06c9a91c"
      ],
      "author": {
        "name": "Harvey Harrison",
        "email": "harvey.harrison@gmail.com",
        "time": "Mon Apr 28 02:13:41 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:27 2008 -0700"
      },
      "message": "smack: fix integer as NULL pointer warning in smack_lsm.c\n\nsecurity/smack/smack_lsm.c:1257:16: warning: Using plain integer as NULL pointer\n\nSigned-off-by: Harvey Harrison \u003charvey.harrison@gmail.com\u003e\nAcked-by: Casey Schaufler \u003ccasey@schaufler-ca.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "3898b1b4ebff8dcfbcf1807e0661585e06c9a91c",
      "tree": "69a338864dfe654f68064a599c5d0da460df34ac",
      "parents": [
        "4016a1390d07f15b267eecb20e76a48fd5c524ef"
      ],
      "author": {
        "name": "Andrew G. Morgan",
        "email": "morgan@kernel.org",
        "time": "Mon Apr 28 02:13:40 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:26 2008 -0700"
      },
      "message": "capabilities: implement per-process securebits\n\nFilesystem capability support makes it possible to do away with (set)uid-0\nbased privilege and use capabilities instead.  That is, with filesystem\nsupport for capabilities but without this present patch, it is (conceptually)\npossible to manage a system with capabilities alone and never need to obtain\nprivilege via (set)uid-0.\n\nOf course, conceptually isn\u0027t quite the same as currently possible since few\nuser applications, certainly not enough to run a viable system, are currently\nprepared to leverage capabilities to exercise privilege.  Further, many\napplications exist that may never get upgraded in this way, and the kernel\nwill continue to want to support their setuid-0 base privilege needs.\n\nWhere pure-capability applications evolve and replace setuid-0 binaries, it is\ndesirable that there be a mechanisms by which they can contain their\nprivilege.  In addition to leveraging the per-process bounding and inheritable\nsets, this should include suppressing the privilege of the uid-0 superuser\nfrom the process\u0027 tree of children.\n\nThe feature added by this patch can be leveraged to suppress the privilege\nassociated with (set)uid-0.  This suppression requires CAP_SETPCAP to\ninitiate, and only immediately affects the \u0027current\u0027 process (it is inherited\nthrough fork()/exec()).  This reimplementation differs significantly from the\nhistorical support for securebits which was system-wide, unwieldy and which\nhas ultimately withered to a dead relic in the source of the modern kernel.\n\nWith this patch applied a process, that is capable(CAP_SETPCAP), can now drop\nall legacy privilege (through uid\u003d0) for itself and all subsequently\nfork()\u0027d/exec()\u0027d children with:\n\n  prctl(PR_SET_SECUREBITS, 0x2f);\n\nThis patch represents a no-op unless CONFIG_SECURITY_FILE_CAPABILITIES is\nenabled at configure time.\n\n[akpm@linux-foundation.org: fix uninitialised var warning]\n[serue@us.ibm.com: capabilities: use cap_task_prctl when !CONFIG_SECURITY]\nSigned-off-by: Andrew G. Morgan \u003cmorgan@kernel.org\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nReviewed-by: James Morris \u003cjmorris@namei.org\u003e\nCc: Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nCc: Paul Moore \u003cpaul.moore@hp.com\u003e\nSigned-off-by: Serge E. Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "4016a1390d07f15b267eecb20e76a48fd5c524ef",
      "tree": "ae9ce9bd7d2fd784a396893c4d4b2a79b2d7342d",
      "parents": [
        "468fd62ed9090ccbe872489df5d0d099510df4b5"
      ],
      "author": {
        "name": "Michael Hennerich",
        "email": "Michael.Hennerich@analog.com",
        "time": "Mon Apr 28 02:13:38 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:26 2008 -0700"
      },
      "message": "mm/nommu.c: return 0 from kobjsize with invalid objects\n\nDon\u0027t perform kobjsize operations on objects the kernel doesn\u0027t manage.\n\nOn Blackfin, drivers can get dma coherent memory by calling a function\ndma_alloc_coherent(). We do this in nommu by configuring a chunk of uncached\nmemory at the top of memory.\n\nSince we don\u0027t want the kernel to use the uncached memory, we lie to the\nkernel, and tell it that it\u0027s max memory is between 0, and the start of the\nuncached dma coherent section.\n\nthis all works well, until this memory gets exposed into userspace (with a\nframe buffer), when you look at the process\u0027s maps, it shows the framebuf:\n\nroot:/proc\u003e cat maps\n[snip]\n03f0ef00-03f34700 rw-p 00000000 1f:00 192        /dev/fb0\nroot:/proc\u003e\n\nThis is outside the \"normal\" range for the kernel. When the kernel tries to\nfind the size of this object (when you run ps), it dies in nommu.c in\nkobjsize.\n\nBUG_ON(page-\u003eindex \u003e\u003d MAX_ORDER);\n\nsince the page we are referring to is outside what the kernel thinks is it\u0027s\nmax valid memory.\n\nroot:~\u003e while [ 1 ]; ps \u003e /dev/null; done\nkernel BUG at mm/nommu.c:119!\nKernel panic - not syncing: BUG!\n\nWe fixed this by adding a check to reject out of range object pointers as it\nalready does that for NULL pointers.\n\nSigned-off-by: Michael Hennerich \u003cMichael.Hennerich@analog.com\u003e\nSigned-off-by: Robin Getz \u003crgetz@blackfin.uclinux.org\u003e\nAcked-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "468fd62ed9090ccbe872489df5d0d099510df4b5",
      "tree": "017ab340cac72bf86423f181f085e7bc39fd70ea",
      "parents": [
        "8cece85ec744bdc7ea0fc2d33f65b3f031c28468"
      ],
      "author": {
        "name": "Dimitri Sivanich",
        "email": "sivanich@sgi.com",
        "time": "Mon Apr 28 02:13:37 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:26 2008 -0700"
      },
      "message": "vmstats: add cond_resched() to refresh_cpu_vm_stats()\n\nWe\u0027ve found that it can take quite a bit of time (100\u0027s of usec) to get\nthrough the zone loop in refresh_cpu_vm_stats().\n\nAdding a cond_resched() to allow other threads to run in the non-preemptive\ncase.\n\nSigned-off-by: Dimitri Sivanich \u003csivanich@sgi.com\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "8cece85ec744bdc7ea0fc2d33f65b3f031c28468",
      "tree": "f11f84a37cf53f4db78d12b6372b7fe105ddccf5",
      "parents": [
        "2309f9e6fe3f1de661eab9613f7903ab4420c753"
      ],
      "author": {
        "name": "KAMEZAWA Hiroyuki",
        "email": "kamezawa.hiroyu@jp.fujitsu.com",
        "time": "Mon Apr 28 02:13:36 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:26 2008 -0700"
      },
      "message": "mm: fix broken gfp_zone with __GFP_THISNODE\n\nThis hack, \"base \u003d MAX_NR_ZONES\", at __GFP_THISNODE was used for old\nzonliests.\n\nNow, new zonelist[] have a list for __GFP_THISNODE and this hack is incorrect.\nShould be removed.\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "2309f9e6fe3f1de661eab9613f7903ab4420c753",
      "tree": "283c26f2cd9f42bd63e7b514278aafe7c53a4dc0",
      "parents": [
        "97d87c9710bc6c5f2585fb9dc58f5bedbe996f10"
      ],
      "author": {
        "name": "Pavel Machek",
        "email": "pavel@ucw.cz",
        "time": "Mon Apr 28 02:13:35 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:26 2008 -0700"
      },
      "message": "mm/page_alloc.c: remove hand-coded get_order()\n\nRemove hand-coded get_order() from page_alloc.c.\n\nSigned-off-by: Pavel Machek \u003cpavel@suse.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "97d87c9710bc6c5f2585fb9dc58f5bedbe996f10",
      "tree": "60d6b2adc950c55330504fc472464339328d7ef7",
      "parents": [
        "0c0a4a517a31e05efb38304668198a873bfec6ca"
      ],
      "author": {
        "name": "Li Zefan",
        "email": "lizf@cn.fujitsu.com",
        "time": "Mon Apr 28 02:13:35 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:26 2008 -0700"
      },
      "message": "oom_kill: remove unused parameter in badness()\n\nIn commit 4c4a22148909e4c003562ea7ffe0a06e26919e3c, we moved the\nmemcontroller-related code from badness() to select_bad_process(), so the\nparameter \u0027mem\u0027 in badness() is unused now.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "0c0a4a517a31e05efb38304668198a873bfec6ca",
      "tree": "3d02fe9dbf160cd5d328c1e2cf4b40ce37426c5f",
      "parents": [
        "86f6dae1377523689bd8468fed2f2dd180fc0560"
      ],
      "author": {
        "name": "Yasunori Goto",
        "email": "y-goto@jp.fujitsu.com",
        "time": "Mon Apr 28 02:13:34 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:26 2008 -0700"
      },
      "message": "memory hotplug: free memmaps allocated by bootmem\n\nThis patch is to free memmaps which is allocated by bootmem.\n\nFreeing usemap is not necessary.  The pages of usemap may be necessary for\nother sections.\n\nIf removing section is last section on the node, its section is the final user\nof usemap page.  (usemaps are allocated on its section by previous patch.) But\nit shouldn\u0027t be freed too, because the section must be logical offline state\nwhich all pages are isolated against page allocater.  If it is freed, page\nalloctor may use it which will be removed physically soon.  It will be\ndisaster.  So, this patch keeps it as it is.\n\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Yinghai Lu \u003cyhlu.kernel@gmail.com\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "86f6dae1377523689bd8468fed2f2dd180fc0560",
      "tree": "90c4495ae947627d610f13c8a185fd16358bc14e",
      "parents": [
        "e70260aabea3af2a84b951e75166dcebe689b88e"
      ],
      "author": {
        "name": "Yasunori Goto",
        "email": "y-goto@jp.fujitsu.com",
        "time": "Mon Apr 28 02:13:33 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:25 2008 -0700"
      },
      "message": "memory hotplug: allocate usemap on the section with pgdat\n\nUsemaps are allocated on the section which has pgdat by this.\n\nBecause usemap size is very small, many other sections usemaps are allocated\non only one page.  If a section has usemap, it can\u0027t be removed until removing\nother sections.  This dependency is not desirable for memory removing.\n\nPgdat has similar feature.  When a section has pgdat area, it must be the last\nsection for removing on the node.  So, if section A has pgdat and section B\nhas usemap for section A, Both sections can\u0027t be removed due to dependency\neach other.\n\nTo solve this issue, this patch collects usemap on same section with pgdat.\nIf other sections doesn\u0027t have any dependency, this section will be able to be\nremoved finally.\n\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Yinghai Lu \u003cyhlu.kernel@gmail.com\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e70260aabea3af2a84b951e75166dcebe689b88e",
      "tree": "196dc5f2804f9f5496f51954330a036e3a2762d8",
      "parents": [
        "9d99217a02a06a7cc83f065b73e976970970c58c"
      ],
      "author": {
        "name": "Yasunori Goto",
        "email": "y-goto@jp.fujitsu.com",
        "time": "Mon Apr 28 02:13:32 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:25 2008 -0700"
      },
      "message": "memory hotplug: make alloc_bootmem_section()\n\nalloc_bootmem_section() can allocate specified section\u0027s area.  This is used\nfor usemap to keep same section with pgdat by later patch.\n\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Yinghai Lu \u003cyhlu.kernel@gmail.com\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "9d99217a02a06a7cc83f065b73e976970970c58c",
      "tree": "14d270c37701f9ae621c9cd8b076e207ee86e5d0",
      "parents": [
        "04753278769f3b6c3b79a080edb52f21d83bf6e2"
      ],
      "author": {
        "name": "Yasunori Goto",
        "email": "y-goto@jp.fujitsu.com",
        "time": "Mon Apr 28 02:13:32 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:25 2008 -0700"
      },
      "message": "memory hotplug: align memmap to page size\n\nTo free memmap easier, this patch aligns it to page size.  Bootmem allocater\nmay mix some objects in one pages.  It\u0027s not good for freeing memmap of memory\nhot-remove.\n\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Yinghai Lu \u003cyhlu.kernel@gmail.com\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "04753278769f3b6c3b79a080edb52f21d83bf6e2",
      "tree": "0dff4088b44016b6d04930b2fc09419412821aa2",
      "parents": [
        "7f2e9525ba55b1c42ad6c4a5a59d7eb7bdd9be72"
      ],
      "author": {
        "name": "Yasunori Goto",
        "email": "y-goto@jp.fujitsu.com",
        "time": "Mon Apr 28 02:13:31 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:25 2008 -0700"
      },
      "message": "memory hotplug: register section/node id to free\n\nThis patch set is to free pages which is allocated by bootmem for\nmemory-hotremove.  Some structures of memory management are allocated by\nbootmem.  ex) memmap, etc.\n\nTo remove memory physically, some of them must be freed according to\ncircumstance.  This patch set makes basis to free those pages, and free\nmemmaps.\n\nBasic my idea is using remain members of struct page to remember information\nof users of bootmem (section number or node id).  When the section is\nremoving, kernel can confirm it.  By this information, some issues can be\nsolved.\n\n  1) When the memmap of removing section is allocated on other\n     section by bootmem, it should/can be free.\n  2) When the memmap of removing section is allocated on the\n     same section, it shouldn\u0027t be freed. Because the section has to be\n     logical memory offlined already and all pages must be isolated against\n     page allocater. If it is freed, page allocator may use it which will\n     be removed physically soon.\n  3) When removing section has other section\u0027s memmap,\n     kernel will be able to show easily which section should be removed\n     before it for user. (Not implemented yet)\n  4) When the above case 2), the page isolation will be able to check and skip\n     memmap\u0027s page when logical memory offline (offline_pages()).\n     Current page isolation code fails in this case because this page is\n     just reserved page and it can\u0027t distinguish this pages can be\n     removed or not. But, it will be able to do by this patch.\n     (Not implemented yet.)\n  5) The node information like pgdat has similar issues. But, this\n     will be able to be solved too by this.\n     (Not implemented yet, but, remembering node id in the pages.)\n\nFortunately, current bootmem allocator just keeps PageReserved flags,\nand doesn\u0027t use any other members of page struct. The users of\nbootmem doesn\u0027t use them too.\n\nThis patch:\n\nThis is to register information which is node or section\u0027s id.  Kernel can\ndistinguish which node/section uses the pages allcated by bootmem.  This is\nbasis for hot-remove sections or nodes.\n\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Yinghai Lu \u003cyhlu.kernel@gmail.com\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "7f2e9525ba55b1c42ad6c4a5a59d7eb7bdd9be72",
      "tree": "10792496f50b4b0fed8a2c356a8819ae8f9ce47f",
      "parents": [
        "8fe627ec5b7c47b1654dff50536d9709863295a3"
      ],
      "author": {
        "name": "Gerald Schaefer",
        "email": "gerald.schaefer@de.ibm.com",
        "time": "Mon Apr 28 02:13:29 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:25 2008 -0700"
      },
      "message": "hugetlbfs: common code update for s390\n\nHuge ptes have a special type on s390 and cannot be handled with the standard\npte functions in certain cases, e.g.  because of a different location of the\ninvalid bit.  This patch adds some new architecture- specific functions to\nhugetlb common code, as a prerequisite for the s390 large page support.\n\nThis won\u0027t affect other architectures in functionality, but I need to add some\nnew dummy inline functions to the headers.\n\nAcked-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Gerald Schaefer \u003cgerald.schaefer@de.ibm.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "8fe627ec5b7c47b1654dff50536d9709863295a3",
      "tree": "78511553eb4111224e89ef02a9436d0db382694b",
      "parents": [
        "6d779079bfd1196e077bb1d0a906c37ae770b102"
      ],
      "author": {
        "name": "Gerald Schaefer",
        "email": "gerald.schaefer@de.ibm.com",
        "time": "Mon Apr 28 02:13:28 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:25 2008 -0700"
      },
      "message": "hugetlbfs: add missing TLB flush to hugetlb_cow()\n\nA cow break on a hugetlbfs page with page_count \u003e 1 will set a new pte with\nset_huge_pte_at(), w/o any tlb flush operation.  The old pte will remain in\nthe tlb and subsequent write access to the page will result in a page fault\nloop, for as long as it may take until the tlb is flushed from somewhere else.\n This patch introduces an architecture-specific huge_ptep_clear_flush()\nfunction, which is called before the the set_huge_pte_at() in hugetlb_cow().\n\nATTENTION: This is just a nop on all architectures for now, the s390\nimplementation will come with our large page patch later.  Other architectures\nshould define their own huge_ptep_clear_flush() if needed.\n\nAcked-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Gerald Schaefer \u003cgerald.schaefer@de.ibm.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "6d779079bfd1196e077bb1d0a906c37ae770b102",
      "tree": "880b17a8c5d4badb548773928868606826899c68",
      "parents": [
        "71fe804b6d56d6a7aed680e096901434cef6a2c3"
      ],
      "author": {
        "name": "Gerald Schaefer",
        "email": "gerald.schaefer@de.ibm.com",
        "time": "Mon Apr 28 02:13:27 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:25 2008 -0700"
      },
      "message": "hugetlbfs: architecture header cleanup\n\nThis patch moves all architecture functions for hugetlb to architecture header\nfiles (include/asm-foo/hugetlb.h) and converts all macros to inline functions.\n It also removes (!) ARCH_HAS_HUGEPAGE_ONLY_RANGE,\nARCH_HAS_HUGETLB_FREE_PGD_RANGE, ARCH_HAS_PREPARE_HUGEPAGE_RANGE,\nARCH_HAS_SETCLEAR_HUGE_PTE and ARCH_HAS_HUGETLB_PREFAULT_HOOK.\n\nGetting rid of the ARCH_HAS_xxx #ifdef and macro fugliness should increase\nreadability and maintainability, at the price of some code duplication.  An\nasm-generic common part would have reduced the loc, but we would end up with\nnew ARCH_HAS_xxx defines eventually.\n\nAcked-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Gerald Schaefer \u003cgerald.schaefer@de.ibm.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "71fe804b6d56d6a7aed680e096901434cef6a2c3",
      "tree": "3dd437e09fe6ee57644c72c79e08c562d4bb6389",
      "parents": [
        "3f226aa1cbc006f9d90f22084f519ad2a1286cd8"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "lee.schermerhorn@hp.com",
        "time": "Mon Apr 28 02:13:26 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:25 2008 -0700"
      },
      "message": "mempolicy: use struct mempolicy pointer in shmem_sb_info\n\nThis patch replaces the mempolicy mode, mode_flags, and nodemask in the\nshmem_sb_info struct with a struct mempolicy pointer, initialized to NULL.\nThis removes dependency on the details of mempolicy from shmem.c and hugetlbfs\ninode.c and simplifies the interfaces.\n\nmpol_parse_str() in mempolicy.c is changed to return, via a pointer to a\npointer arg, a struct mempolicy pointer on success.  For MPOL_DEFAULT, the\nreturned pointer is NULL.  Further, mpol_parse_str() now takes a \u0027no_context\u0027\nargument that causes the input nodemask to be stored in the w.user_nodemask of\nthe created mempolicy for use when the mempolicy is installed in a tmpfs inode\nshared policy tree.  At that time, any cpuset contextualization is applied to\nthe original input nodemask.  This preserves the previous behavior where the\ninput nodemask was stored in the superblock.  We can think of the returned\nmempolicy as \"context free\".\n\nBecause mpol_parse_str() is now calling mpol_new(), we can remove from\nmpol_to_str() the semantic checks that mpol_new() already performs.\n\nAdd \u0027no_context\u0027 parameter to mpol_to_str() to specify that it should format\nthe nodemask in w.user_nodemask for \u0027bind\u0027 and \u0027interleave\u0027 policies.\n\nChange mpol_shared_policy_init() to take a pointer to a \"context free\" struct\nmempolicy and to create a new, \"contextualized\" mempolicy using the mode,\nmode_flags and user_nodemask from the input mempolicy.\n\n  Note: we know that the mempolicy passed to mpol_to_str() or\n  mpol_shared_policy_init() from a tmpfs superblock is \"context free\".  This\n  is currently the only instance thereof.  However, if we found more uses for\n  this concept, and introduced any ambiguity as to whether a mempolicy was\n  context free or not, we could add another internal mode flag to identify\n  context free mempolicies.  Then, we could remove the \u0027no_context\u0027 argument\n  from mpol_to_str().\n\nAdded shmem_get_sbmpol() to return a reference counted superblock mempolicy,\nif one exists, to pass to mpol_shared_policy_init().  We must add the\nreference under the sb stat_lock to prevent races with replacement of the mpol\nby remount.  This reference is removed in mpol_shared_policy_init().\n\n[akpm@linux-foundation.org: build fix]\n[akpm@linux-foundation.org: another build fix]\n[akpm@linux-foundation.org: yet another build fix]\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "3f226aa1cbc006f9d90f22084f519ad2a1286cd8",
      "tree": "e54a87abb19f9dea184f4c17c4c8532d3d715de8",
      "parents": [
        "095f1fc4ebf36c64fddf9b6db29b1ab5517378e6"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "lee.schermerhorn@hp.com",
        "time": "Mon Apr 28 02:13:24 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:25 2008 -0700"
      },
      "message": "mempolicy: support mpol\u003dlocal tmpfs mount option\n\nFor tmpfs/shmem shared policies, MPOL_DEFAULT is not necessarily equivalent to\n\"local allocation\".  Because shared policies are at the same \"scope\" level\n[see Documentation/vm/numa_memory_policy.txt], as vma policies MPOL_DEFAULT\nmeans \"fall back to current task policy\".\n\nThis patch extends the memory policy string parsing function to display\n\"local\" for MPOL_PREFERRED + MPOL_F_LOCAL.  This allows one to specify local\nallocation as the default policy for shared memory areas via the tmpfs mpol\nmount option, regardless of the current task\u0027s policy.\n\nAlso, \"local\" is now displayed for this policy.  This patch allows us to\naccept the same input format as the display.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "095f1fc4ebf36c64fddf9b6db29b1ab5517378e6",
      "tree": "39aae9d5b05d8501d1794e92c6115331c0a40848",
      "parents": [
        "2291990ab36b4b2d8a81b1f92e7a046e51632a60"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "lee.schermerhorn@hp.com",
        "time": "Mon Apr 28 02:13:23 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:24 2008 -0700"
      },
      "message": "mempolicy: rework shmem mpol parsing and display\n\nmm/shmem.c currently contains functions to parse and display memory policy\nstrings for the tmpfs \u0027mpol\u0027 mount option.  Move this to mm/mempolicy.c with\nthe rest of the mempolicy support.  With subsequent patches, we\u0027ll be able to\nremove knowledge of the details [mode, flags, policy, ...] completely from\nshmem.c\n\n1) replace shmem_parse_mpol() in mm/shmem.c with mpol_parse_str() in\n   mm/mempolicy.c.  Rework to use the policy_types[] array [used by\n   mpol_to_str()] to look up mode by name.\n\n2) use mpol_to_str() to format policy for shmem_show_mpol().  mpol_to_str()\n   expects a pointer to a struct mempolicy, so temporarily construct one.\n   This will be replaced with a reference to a struct mempolicy in the tmpfs\n   superblock in a subsequent patch.\n\n   NOTE 1: I changed mpol_to_str() to use a colon \u0027:\u0027 rather than an equal\n   sign \u0027\u003d\u0027 as the nodemask delimiter to match mpol_parse_str() and the\n   tmpfs/shmem mpol mount option formatting that now uses mpol_to_str().  This\n   is a user visible change to numa_maps, but then the addition of the mode\n   flags already changed the display.  It makes sense to me to have the mounts\n   and numa_maps display the policy in the same format.  However, if anyone\n   objects strongly, I can pass the desired nodemask delimeter as an arg to\n   mpol_to_str().\n\n   Note 2: Like show_numa_map(), I don\u0027t check the return code from\n   mpol_to_str().  I do use a longer buffer than the one provided by\n   show_numa_map(), which seems to have sufficed so far.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "2291990ab36b4b2d8a81b1f92e7a046e51632a60",
      "tree": "b5b6b8ca9c92bc3c84cd7e7aefb5010d3793db4d",
      "parents": [
        "fc36b8d3d819047eb4d23ca079fb4d3af20ff076"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "lee.schermerhorn@hp.com",
        "time": "Mon Apr 28 02:13:22 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:24 2008 -0700"
      },
      "message": "mempolicy: clean-up mpol-to-str() mempolicy formatting\n\nmpol-to-str() formats memory policies into printable strings.  Currently this\nis only used to display \"numa_maps\".  A subsequent patch will use\nmpol_to_str() for formatting tmpfs [shmem] mpol mount options, allowing us to\nremove essentially duplicate code in mm/shmem.c.  This patch cleans up\nmpol_to_str() generally and in preparation for that patch.\n\n1) show_numa_maps() is not checking the return code from mpol_to_str().\n   There\u0027s not a lot we can do in this context if mpol_to_str() did return the\n   error [insufficient space in buffer].  Proposed \"solution\": just check,\n   under DEBUG_VM, that callers are providing sufficient buffer space for the\n   policy, flags, and a few nodes.  This way, we\u0027ll get some display.\n   show_numa_maps() is providing a 50-byte buffer, so it won\u0027t trip this\n   check.  50-bytes should be sufficient unless one has a large number of\n   nodes in a very sparse nodemask.\n\n2) The display of the new mode flags [\"static\" \u0026 \"relative\"] was set up to\n   display multiple flags, separated by a \"bar\" \u0027|\u0027.  However, this support is\n   incomplete--e.g., need_bar was never incremented; and currently, these two\n   flags are mutually exclusive.  So remove the \"bar\" support, for now, and\n   only display one flag.\n\n3) Use snprint() to format flags, so as not to overflow the buffer.  Not\n   that it\u0027s ever happed, AFAIK.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "fc36b8d3d819047eb4d23ca079fb4d3af20ff076",
      "tree": "65ee215a6bdca1e8d4ac4b57525445d7d1829c1d",
      "parents": [
        "53f2556b6792ed99fde965f5e061749edd455623"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "lee.schermerhorn@hp.com",
        "time": "Mon Apr 28 02:13:21 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:24 2008 -0700"
      },
      "message": "mempolicy: use MPOL_F_LOCAL to Indicate Preferred Local Policy\n\nNow that we\u0027re using \"preferred local\" policy for system default, we need to\nmake this as fast as possible.  Because of the variable size of the mempolicy\nstructure [based on size of nodemasks], the preferred_node may be in a\ndifferent cacheline from the mode.  This can result in accessing an extra\ncacheline in the normal case of system default policy.  Suspect this is the\ncause of an observed 2-3% slowdown in page fault testing relative to kernel\nwithout this patch series.\n\nTo alleviate this, use an internal mode flag, MPOL_F_LOCAL in the mempolicy\nflags member which is guaranteed [?] to be in the same cacheline as the mode\nitself.\n\nVerified that reworked mempolicy now performs slightly better on 25-rc8-mm1\nfor both anon and shmem segments with system default and vma [preferred local]\npolicy.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "53f2556b6792ed99fde965f5e061749edd455623",
      "tree": "82a679e33bc8c305297cbe4655be0dac24728907",
      "parents": [
        "bea904d54d6faa92400f10c8ea3d3828b8e1eb93"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "lee.schermerhorn@hp.com",
        "time": "Mon Apr 28 02:13:20 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:24 2008 -0700"
      },
      "message": "mempolicy: mPOL_PREFERRED cleanups for \"local allocation\"\n\nHere are a couple of \"cleanups\" for MPOL_PREFERRED behavior when\nv.preferred_node \u003c 0 -- i.e., \"local allocation\":\n\n1)  [do_]get_mempolicy() calls the now renamed get_policy_nodemask()\n    to fetch the nodemask associated with a policy.  Currently,\n    get_policy_nodemask() returns the set of nodes with memory, when\n    the policy \u0027mode\u0027 is \u0027PREFERRED, and the preferred_node is \u003c 0.\n    Change to return an empty nodemask, as this is what was specified\n    to achieve \"local allocation\".\n\n2)  When a task is moved into a [new] cpuset, mpol_rebind_policy() is\n    called to adjust any task and vma policy nodes to be valid in the\n    new cpuset.  However, when the policy is MPOL_PREFERRED, and the\n    preferred_node is \u003c0, no rebind is necessary.  The \"local allocation\"\n    indication is valid in any cpuset.  Existing code will \"do the right\n    thing\" because node_remap() will just return the argument node when\n    it is outside of the valid range of node ids.  However, I think it is\n    clearer and cleaner to skip the remap explicitly in this case.\n\n3)  mpol_to_str() produces a printable, \"human readable\" string from a\n    struct mempolicy.  For MPOL_PREFERRED with preferred_node \u003c0,  show\n    \"local\", as this indicates local allocation, as the task migrates\n    among nodes.  Note that this matches the usage of \"local allocation\"\n    in libnuma() and numactl.  Without this change, I believe that node_set()\n    [via set_bit()] will set bit 31, resulting in a misleading display.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "bea904d54d6faa92400f10c8ea3d3828b8e1eb93",
      "tree": "24966dd4dabadb4bb32aa1e00fae2c2168661229",
      "parents": [
        "52cd3b074050dd664380b5e8cfc85d4a6ed8ad48"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "lee.schermerhorn@hp.com",
        "time": "Mon Apr 28 02:13:18 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:24 2008 -0700"
      },
      "message": "mempolicy: use MPOL_PREFERRED for system-wide default policy\n\nCurrently, when one specifies MPOL_DEFAULT via a NUMA memory policy API\n[set_mempolicy(), mbind() and internal versions], the kernel simply installs a\nNULL struct mempolicy pointer in the appropriate context: task policy, vma\npolicy, or shared policy.  This causes any use of that policy to \"fall back\"\nto the next most specific policy scope.\n\nThe only use of MPOL_DEFAULT to mean \"local allocation\" is in the system\ndefault policy.  This requires extra checks/cases for MPOL_DEFAULT in many\nmempolicy.c functions.\n\nThere is another, \"preferred\" way to specify local allocation via the APIs.\nThat is using the MPOL_PREFERRED policy mode with an empty nodemask.\nInternally, the empty nodemask gets converted to a preferred_node id of \u0027-1\u0027.\nAll internal usage of MPOL_PREFERRED will convert the \u0027-1\u0027 to the id of the\nnode local to the cpu where the allocation occurs.\n\nSystem default policy, except during boot, is hard-coded to \"local\nallocation\".  By using the MPOL_PREFERRED mode with a negative value of\npreferred node for system default policy, MPOL_DEFAULT will never occur in the\n\u0027policy\u0027 member of a struct mempolicy.  Thus, we can remove all checks for\nMPOL_DEFAULT when converting policy to a node id/zonelist in the allocation\npaths.\n\nIn slab_node() return local node id when policy pointer is NULL.  No need to\nset a pol value to take the switch default.  Replace switch default with\nBUG()--i.e., shouldn\u0027t happen.\n\nWith this patch MPOL_DEFAULT is only used in the APIs, including internal\ncalls to do_set_mempolicy() and in the display of policy in\n/proc/\u003cpid\u003e/numa_maps.  It always means \"fall back\" to the the next most\nspecific policy scope.  This simplifies the description of memory policies\nquite a bit, with no visible change in behavior.\n\nget_mempolicy() continues to return MPOL_DEFAULT and an empty nodemask when\nthe requested policy [task or vma/shared] is NULL.  These are the values one\nwould supply via set_mempolicy() or mbind() to achieve that condition--default\nbehavior.\n\nThis patch updates Documentation to reflect this change.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "52cd3b074050dd664380b5e8cfc85d4a6ed8ad48",
      "tree": "fcfcf55c0e81376ea34919fab26e29bedd7f3b88",
      "parents": [
        "a6020ed759404372e8be2b276e85e51735472cc9"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "lee.schermerhorn@hp.com",
        "time": "Mon Apr 28 02:13:16 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:24 2008 -0700"
      },
      "message": "mempolicy: rework mempolicy Reference Counting [yet again]\n\nAfter further discussion with Christoph Lameter, it has become clear that my\nearlier attempts to clean up the mempolicy reference counting were a bit of\noverkill in some areas, resulting in superflous ref/unref in what are usually\nfast paths.  In other areas, further inspection reveals that I botched the\nunref for interleave policies.\n\nA separate patch, suitable for upstream/stable trees, fixes up the known\nerrors in the previous attempt to fix reference counting.\n\nThis patch reworks the memory policy referencing counting and, one hopes,\nsimplifies the code.  Maybe I\u0027ll get it right this time.\n\nSee the update to the numa_memory_policy.txt document for a discussion of\nmemory policy reference counting that motivates this patch.\n\nSummary:\n\nLookup of mempolicy, based on (vma, address) need only add a reference for\nshared policy, and we need only unref the policy when finished for shared\npolicies.  So, this patch backs out all of the unneeded extra reference\ncounting added by my previous attempt.  It then unrefs only shared policies\nwhen we\u0027re finished with them, using the mpol_cond_put() [conditional put]\nhelper function introduced by this patch.\n\nNote that shmem_swapin() calls read_swap_cache_async() with a dummy vma\ncontaining just the policy.  read_swap_cache_async() can call alloc_page_vma()\nmultiple times, so we can\u0027t let alloc_page_vma() unref the shared policy in\nthis case.  To avoid this, we make a copy of any non-null shared policy and\nremove the MPOL_F_SHARED flag from the copy.  This copy occurs before reading\na page [or multiple pages] from swap, so the overhead should not be an issue\nhere.\n\nI introduced a new static inline function \"mpol_cond_copy()\" to copy the\nshared policy to an on-stack policy and remove the flags that would require a\nconditional free.  The current implementation of mpol_cond_copy() assumes that\nthe struct mempolicy contains no pointers to dynamically allocated structures\nthat must be duplicated or reference counted during copy.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "a6020ed759404372e8be2b276e85e51735472cc9",
      "tree": "1fb0a346909dcc9d3b916671001af87b17931ddd",
      "parents": [
        "aab0b1029f0843756b68e0ed3ca983685bf43ed6"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "lee.schermerhorn@hp.com",
        "time": "Mon Apr 28 02:13:14 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:24 2008 -0700"
      },
      "message": "mempolicy: document {set|get}_policy() vm_ops APIs\n\nDocument mempolicy return value reference semantics assumed by the rest of the\nmempolicy code for the set_ and get_policy vm_ops in \u003clinux/mm.h\u003e--where the\nprototypes are defined--to inform any future mempolicy vm_op writers what the\nrest of the subsystem expects of them.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "aab0b1029f0843756b68e0ed3ca983685bf43ed6",
      "tree": "95a0546c908a1c7a3bf1353f433ff1464faf68db",
      "parents": [
        "45c4745af381851b0406d8e4db99e62e265691c2"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "lee.schermerhorn@hp.com",
        "time": "Mon Apr 28 02:13:13 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:24 2008 -0700"
      },
      "message": "mempolicy: mark shared policies for unref\n\nAs part of yet another rework of mempolicy reference counting, we want to be\nable to identify shared policies efficiently, because they have an extra ref\ntaken on lookup that needs to be removed when we\u0027re finished using the policy.\n\n  Note:  the extra ref is required because the policies are\n  shared between tasks/processes and can be changed/freed\n  by one task while another task is using them--e.g., for\n  page allocation.\n\nBuilding on David Rientjes mempolicy \"mode flags\" enhancement, this patch\nindicates a \"shared\" policy by setting a new MPOL_F_SHARED flag in the flags\nmember of the struct mempolicy added by David.  MPOL_F_SHARED, and any future\n\"internal mode flags\" are reserved from bit zero up, as they will never be\npassed in the upper bits of the mode argument of a mempolicy API.\n\nI set the MPOL_F_SHARED flag when the policy is installed in the shared policy\nrb-tree.  Don\u0027t need/want to clear the flag when removing from the tree as the\nmempolicy is freed [unref\u0027d] internally to the sp_delete() function.  However,\na task could hold another reference on this mempolicy from a prior lookup.  We\nneed the MPOL_F_SHARED flag to stay put so that any tasks holding a ref will\nunref, eventually freeing, the mempolicy.\n\nA later patch in this series will introduce a function to conditionally unref\n[mpol_free] a policy.  The MPOL_F_SHARED flag is one reason [currently the\nonly reason] to unref/free a policy via the conditional free.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "45c4745af381851b0406d8e4db99e62e265691c2",
      "tree": "d93f6f7b3d7eb3773aaa80444c56baff99e670d6",
      "parents": [
        "ae4d8c16aa22775f5731677abb8a82f03cec877e"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "lee.schermerhorn@hp.com",
        "time": "Mon Apr 28 02:13:12 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:24 2008 -0700"
      },
      "message": "mempolicy: rename struct mempolicy \u0027policy\u0027 member to \u0027mode\u0027\n\nThe terms \u0027policy\u0027 and \u0027mode\u0027 are both used in various places to describe the\nsemantics of the value stored in the \u0027policy\u0027 member of struct mempolicy.\nFurthermore, the term \u0027policy\u0027 is used to refer to that member, to the entire\nstruct mempolicy and to the more abstract concept of the tuple consisting of a\n\"mode\" and an optional node or set of nodes.  Recently, we have added \"mode\nflags\" that are passed in the upper bits of the \u0027mode\u0027 [or sometimes,\n\u0027policy\u0027] member of the numa APIs.\n\nI\u0027d like to resolve this confusion, which perhaps only exists in my mind, by\nrenaming the \u0027policy\u0027 member to \u0027mode\u0027 throughout, and fixing up the\nDocumentation.  Man pages will be updated separately.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ae4d8c16aa22775f5731677abb8a82f03cec877e",
      "tree": "2d34c6fd334b51cc5f3265cd4ec26db758639b5c",
      "parents": [
        "f4e53d910b7dde2685b177f1e7c3e3e0b4a42f7b"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "lee.schermerhorn@hp.com",
        "time": "Mon Apr 28 02:13:11 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:24 2008 -0700"
      },
      "message": "mempolicy: fixup Fallback for Default Shmem Policy\n\nget_vma_policy() is not handling fallback to task policy correctly when the\nget_policy() vm_op returns NULL.  The NULL overwrites the \u0027pol\u0027 variable that\nwas holding the fallback task mempolicy.  So, it was falling back directly to\nsystem default policy.\n\nFix get_vma_policy() to use only non-NULL policy returned from the vma\nget_policy op.\n\nshm_get_policy() was falling back to current task\u0027s mempolicy if the \"backing\nfile system\" [tmpfs vs hugetlbfs] does not support the get_policy vm_op and\nthe vma policy is null.  This is incorrect for show_numa_maps() which is\nlikely querying the numa_maps of some task other than current.  Remove this\nfallback.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "f4e53d910b7dde2685b177f1e7c3e3e0b4a42f7b",
      "tree": "db4db3abbc0b63de88dabd13e9359ca86973935c",
      "parents": [
        "846a16bf0fc80dc95a414ffce465e3cbf9680247"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "lee.schermerhorn@hp.com",
        "time": "Mon Apr 28 02:13:10 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:23 2008 -0700"
      },
      "message": "mempolicy: write lock mmap_sem while changing task mempolicy\n\nA read of /proc/\u003cpid\u003e/numa_maps holds the target task\u0027s mmap_sem for read\nwhile examining each vma\u0027s mempolicy.  A vma\u0027s mempolicy can fall back to the\ntask\u0027s policy.  However, the task could be changing it\u0027s task policy and free\nthe one that the show_numa_maps() is examining.\n\nTo prevent this, grab the mmap_sem for write when updating task mempolicy.\nPointed out to me by Christoph Lameter and extracted and reworked from\nChristoph\u0027s alternative mempol reference counting patch.\n\nThis is analogous to the way that do_mbind() and do_get_mempolicy() prevent\nraces between task\u0027s sharing an mm_struct [a.k.a.  threads] setting and\nquerying a mempolicy for a particular address.\n\nNote: this is necessary, but not sufficient, to allow us to stop taking an\nextra reference on \"other task\u0027s mempolicy\" in get_vma_policy.  Subsequent\npatches will complete this update, allowing us to simplify the tests for\nwhether we need to unref a mempolicy at various points in the code.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "846a16bf0fc80dc95a414ffce465e3cbf9680247",
      "tree": "45e03061c5e3d8242bf470509771926f37177415",
      "parents": [
        "f0be3d32b05d3fea2fcdbbb81a39dac2a7163169"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "lee.schermerhorn@hp.com",
        "time": "Mon Apr 28 02:13:09 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:23 2008 -0700"
      },
      "message": "mempolicy: rename mpol_copy to mpol_dup\n\nThis patch renames mpol_copy() to mpol_dup() because, well, that\u0027s what it\ndoes.  Like, e.g., strdup() for strings, mpol_dup() takes a pointer to an\nexisting mempolicy, allocates a new one and copies the contents.\n\nIn a later patch, I want to use the name mpol_copy() to copy the contents from\none mempolicy to another like, e.g., strcpy() does for strings.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "f0be3d32b05d3fea2fcdbbb81a39dac2a7163169",
      "tree": "5794ce6a8befbce82cd3e44ff15fbf3bb5f2f3bf",
      "parents": [
        "3b1163006332302117b1b2acf226d4014ff46525"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "lee.schermerhorn@hp.com",
        "time": "Mon Apr 28 02:13:08 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:23 2008 -0700"
      },
      "message": "mempolicy: rename mpol_free to mpol_put\n\nThis is a change that was requested some time ago by Mel Gorman.  Makes sense\nto me, so here it is.\n\nNote: I retain the name \"mpol_free_shared_policy()\" because it actually does\nfree the shared_policy, which is NOT a reference counted object.  However, ...\n\nThe mempolicy object[s] referenced by the shared_policy are reference counted,\nso mpol_put() is used to release the reference held by the shared_policy.  The\nmempolicy might not be freed at this time, because some task attached to the\nshared object associated with the shared policy may be in the process of\nallocating a page based on the mempolicy.  In that case, the task performing\nthe allocation will hold a reference on the mempolicy, obtained via\nmpol_shared_policy_lookup().  The mempolicy will be freed when all tasks\nholding such a reference have called mpol_put() for the mempolicy.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "3b1163006332302117b1b2acf226d4014ff46525",
      "tree": "c9e43179620cfe612ce57795cb0b1e1ceb2c9d1b",
      "parents": [
        "122c7a59055c77434118d7dd4dff4b625d4a2c15"
      ],
      "author": {
        "name": "Adam Litke",
        "email": "agl@us.ibm.com",
        "time": "Mon Apr 28 02:13:06 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:23 2008 -0700"
      },
      "message": "Subject: [PATCH] hugetlb: vmstat events for huge page allocations\n\nAllocating huge pages directly from the buddy allocator is not guaranteed to\nsucceed.  Success depends on several factors (such as the amount of physical\nmemory available and the level of fragmentation).  With the addition of\ndynamic hugetlb pool resizing, allocations can occur much more frequently.\nFor these reasons it is desirable to keep track of huge page allocation\nsuccesses and failures.\n\nAdd two new vmstat entries to track huge page allocations that succeed and\nfail.  The presence of the two entries is contingent upon CONFIG_HUGETLB_PAGE\nbeing enabled.\n\n[akpm@linux-foundation.org: reduced ifdeffery]\nSigned-off-by: Adam Litke \u003cagl@us.ibm.com\u003e\nSigned-off-by: Eric Munson \u003cebmunson@us.ibm.com\u003e\nTested-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nReviewed-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "122c7a59055c77434118d7dd4dff4b625d4a2c15",
      "tree": "a17bffce4d5c9574553fdfa075197c0a7b081fbd",
      "parents": [
        "a08cb629f546d1cecebe955392197f226e58dbe1"
      ],
      "author": {
        "name": "Ken\u0027ichi Ohmichi",
        "email": "oomichi@mxs.nes.nec.co.jp",
        "time": "Mon Apr 28 02:13:04 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:23 2008 -0700"
      },
      "message": "vmcoreinfo: add page flags values\n\nAdd some values of page flags to the vmcoreinfo data.\n\nThe vmcoreinfo data has the minimum debugging information only for dump\nfiltering.  makedumpfile (dump filtering command) gets it to distinguish\nunnecessary pages, and makedumpfile creates a small dumpfile.\n\nAn old makedumpfile (v1.2.4 or before) had assumed some values of page flags\ninternally, and this implementation could not follow the change of these\nvalues.  For example, Christoph Lameter is changing these values by the\nfollwing patch: http://lkml.org/lkml/2008/2/29/463\n\nSo a new makedumpfile (v1.2.5) came to need these values and I created this\npatch to let the kernel output them.\n\nSigned-off-by: Ken\u0027ichi Ohmichi \u003coomichi@mxs.nes.nec.co.jp\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nAcked-by: Vivek Goyal \u003cvgoyal@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "a08cb629f546d1cecebe955392197f226e58dbe1",
      "tree": "1cbab3071f6d35a0f58abc0ad3b05641ed41df6b",
      "parents": [
        "70688e4dd1647f0ceb502bbd5964fa344c5eb411"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Mon Apr 28 02:13:03 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:23 2008 -0700"
      },
      "message": "s390: implement pte special bit\n\nConvert XIP to support non-struct page backed memory, using VM_MIXEDMAP for\nthe user mappings.\n\nThis requires the get_xip_page API to be changed to an address based one.\nImprove the API layering a little bit too, while we\u0027re here.\n\nThis is required in order to support XIP filesystems on memory that isn\u0027t\nbacked with struct page (but memory with struct page is still supported too).\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: Carsten Otte \u003ccotte@de.ibm.com\u003e\nCc: Jared Hulbert \u003cjaredeh@gmail.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "70688e4dd1647f0ceb502bbd5964fa344c5eb411",
      "tree": "e0bd8c3b4b6050c067a453d800c2e87948d1abaf",
      "parents": [
        "30afcb4bd2762fa4b87b17ada9500aa46dc10b1b"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Mon Apr 28 02:13:02 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:23 2008 -0700"
      },
      "message": "xip: support non-struct page backed memory\n\nConvert XIP to support non-struct page backed memory, using VM_MIXEDMAP for\nthe user mappings.\n\nThis requires the get_xip_page API to be changed to an address based one.\nImprove the API layering a little bit too, while we\u0027re here.\n\nThis is required in order to support XIP filesystems on memory that isn\u0027t\nbacked with struct page (but memory with struct page is still supported too).\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: Carsten Otte \u003ccotte@de.ibm.com\u003e\nCc: Jared Hulbert \u003cjaredeh@gmail.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "30afcb4bd2762fa4b87b17ada9500aa46dc10b1b",
      "tree": "0920f491a37683a8784c146270b98f82a7e0aa2c",
      "parents": [
        "423bad600443c590f34ed7ce357591f76f48f137"
      ],
      "author": {
        "name": "Jared Hulbert",
        "email": "jaredeh@gmail.com",
        "time": "Mon Apr 28 02:13:02 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:23 2008 -0700"
      },
      "message": "return pfn from direct_access, for XIP\n\nAlter the block device -\u003edirect_access() API to work with the new\nget_xip_mem() API (that requires both kaddr and pfn are returned).\n\nSome architectures will not do the right thing in their virt_to_page() for use\nby XIP (to translate from the kernel virtual address returned by\ndirect_access(), to a user mappable pfn in XIP\u0027s page fault handler.\n\nHowever, we can\u0027t switch it to just return the pfn and not the kaddr, because\nwe have no good way to get a kva from a pfn, and XIP requires the kva for its\nread(2) and write(2) handlers.  So we have to return both.\n\nSigned-off-by: Jared Hulbert \u003cjaredeh@gmail.com\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Carsten Otte \u003ccotte@de.ibm.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: linux-mm@kvack.org\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "423bad600443c590f34ed7ce357591f76f48f137",
      "tree": "79487f811bf1097f2592c4d20f688d1b1ec41e25",
      "parents": [
        "7e675137a8e1a4d45822746456dd389b65745bf6"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Mon Apr 28 02:13:01 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:23 2008 -0700"
      },
      "message": "mm: add vm_insert_mixed\n\nvm_insert_mixed will insert either a raw pfn or a refcounted struct page into\nthe page tables, depending on whether vm_normal_page() will return the page or\nnot.  With the introduction of the new pte bit, this is now a too tricky for\ndrivers to be doing themselves.\n\nfilemap_xip uses this in a subsequent patch.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Jared Hulbert \u003cjaredeh@gmail.com\u003e\nCc: Carsten Otte \u003ccotte@de.ibm.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "7e675137a8e1a4d45822746456dd389b65745bf6",
      "tree": "5df01d23ea1b6b212d18f2136ff82913fcbe7718",
      "parents": [
        "b379d790197cdf8a95fb67507d75a24ac0a1678d"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Mon Apr 28 02:13:00 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:23 2008 -0700"
      },
      "message": "mm: introduce pte_special pte bit\n\ns390 for one, cannot implement VM_MIXEDMAP with pfn_valid, due to their memory\nmodel (which is more dynamic than most).  Instead, they had proposed to\nimplement it with an additional path through vm_normal_page(), using a bit in\nthe pte to determine whether or not the page should be refcounted:\n\nvm_normal_page()\n{\n\t...\n        if (unlikely(vma-\u003evm_flags \u0026 (VM_PFNMAP|VM_MIXEDMAP))) {\n                if (vma-\u003evm_flags \u0026 VM_MIXEDMAP) {\n#ifdef s390\n\t\t\tif (!mixedmap_refcount_pte(pte))\n\t\t\t\treturn NULL;\n#else\n                        if (!pfn_valid(pfn))\n                                return NULL;\n#endif\n                        goto out;\n                }\n\t...\n}\n\nThis is fine, however if we are allowed to use a bit in the pte to determine\nrefcountedness, we can use that to _completely_ replace all the vma based\nschemes.  So instead of adding more cases to the already complex vma-based\nscheme, we can have a clearly seperate and simple pte-based scheme (and get\nslightly better code generation in the process):\n\nvm_normal_page()\n{\n#ifdef s390\n\tif (!mixedmap_refcount_pte(pte))\n\t\treturn NULL;\n\treturn pte_page(pte);\n#else\n\t...\n#endif\n}\n\nAnd finally, we may rather make this concept usable by any architecture rather\nthan making it s390 only, so implement a new type of pte state for this.\nUnfortunately the old vma based code must stay, because some architectures may\nnot be able to spare pte bits.  This makes vm_normal_page a little bit more\nugly than we would like, but the 2 cases are clearly seperate.\n\nSo introduce a pte_special pte state, and use it in mm/memory.c.  It is\ncurrently a noop for all architectures, so this doesn\u0027t actually result in any\ncompiled code changes to mm/memory.o.\n\nBTW:\nI haven\u0027t put vm_normal_page() into arch code as-per an earlier suggestion.\nThe reason is that, regardless of where vm_normal_page is actually\nimplemented, the *abstraction* is still exactly the same. Also, while it\ndepends on whether the architecture has pte_special or not, that is the\nonly two possible cases, and it really isn\u0027t an arch specific function --\nthe role of the arch code should be to provide primitive functions and\naccessors with which to build the core code; pte_special does that. We do\nnot want architectures to know or care about vm_normal_page itself, and\nwe definitely don\u0027t want them being able to invent something new there\nout of sight of mm/ code. If we made vm_normal_page an arch function, then\nwe have to make vm_insert_mixed (next patch) an arch function too. So I\ndon\u0027t think moving it to arch code fundamentally improves any abstractions,\nwhile it does practically make the code more difficult to follow, for both\nmm and arch developers, and easier to misuse.\n\n[akpm@linux-foundation.org: build fix]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: Carsten Otte \u003ccotte@de.ibm.com\u003e\nCc: Jared Hulbert \u003cjaredeh@gmail.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "b379d790197cdf8a95fb67507d75a24ac0a1678d",
      "tree": "8ea36c9a0766aca3cfd69cd33aa8a5d2ca8dd2d4",
      "parents": [
        "214e471ff99064726b2d8af3aa0e24a73c775531"
      ],
      "author": {
        "name": "Jared Hulbert",
        "email": "jaredeh@gmail.com",
        "time": "Mon Apr 28 02:12:58 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:22 2008 -0700"
      },
      "message": "mm: introduce VM_MIXEDMAP\n\nThis series introduces some important infrastructure work.  The overall result\nis that:\n\n1. We now support XIP backed filesystems using memory that have no\n   struct page allocated to them. And patches 6 and 7 actually implement\n   this for s390.\n\n   This is pretty important in a number of cases. As far as I understand,\n   in the case of virtualisation (eg. s390), each guest may mount a\n   readonly copy of the same filesystem (eg. the distro). Currently,\n   guests need to allocate struct pages for this image. So if you have\n   100 guests, you already need to allocate more memory for the struct\n   pages than the size of the image. I think. (Carsten?)\n\n   For other (eg. embedded) systems, you may have a very large non-\n   volatile filesystem. If you have to have struct pages for this, then\n   your RAM consumption will go up proportionally to fs size. Even\n   though it is just a small proportion, the RAM can be much more costly\n   eg in terms of power, so every KB less that Linux uses makes it more\n   attractive to a lot of these guys.\n\n2. VM_MIXEDMAP allows us to support mappings where you actually do want\n   to refcount _some_ pages in the mapping, but not others, and support\n   COW on arbitrary (non-linear) mappings. Jared needs this for his NVRAM\n   filesystem in progress. Future iterations of this filesystem will\n   most likely want to migrate pages between pagecache and XIP backing,\n   which is where the requirement for mixed (some refcounted, some not)\n   comes from.\n\n3. pte_special also has a peripheral usage that I need for my lockless\n   get_user_pages patch. That was shown to speed up \"oltp\" on db2 by\n   10% on a 2 socket system, which is kind of significant because they\n   scrounge for months to try to find 0.1% improvement on these\n   workloads. I\u0027m hoping we might finally be faster than AIX on\n   pSeries with this :). My reference to lockless get_user_pages is not\n   meant to justify this patchset (which doesn\u0027t include lockless gup),\n   but just to show that pte_special is not some s390 specific thing that\n   should be hidden in arch code or xip code: I definitely want to use it\n   on at least x86 and powerpc as well.\n\nThis patch:\n\nIntroduce a new type of mapping, VM_MIXEDMAP.  This is unlike VM_PFNMAP in\nthat it can support COW mappings of arbitrary ranges including ranges without\nstruct page *and* ranges with a struct page that we actually want to refcount\n(PFNMAP can only support COW in those cases where the un-COW-ed translations\nare mapped linearly in the virtual address, and can only support non\nrefcounted ranges).\n\nVM_MIXEDMAP achieves this by refcounting all pfn_valid pages, and not\nrefcounting !pfn_valid pages (which is not an option for VM_PFNMAP, because it\nneeds to avoid refcounting pfn_valid pages eg.  for /dev/mem mappings).\n\nSigned-off-by: Jared Hulbert \u003cjaredeh@gmail.com\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: Carsten Otte \u003ccotte@de.ibm.com\u003e\nCc: Jared Hulbert \u003cjaredeh@gmail.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "214e471ff99064726b2d8af3aa0e24a73c775531",
      "tree": "a78674e56c27db43490cac0ef7c121e845051b62",
      "parents": [
        "e20b8cca760ed2a6abcfe37ef56f2306790db648"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "peterz@infradead.org",
        "time": "Mon Apr 28 02:12:55 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:22 2008 -0700"
      },
      "message": "smaps: account swap entries\n\nShow the amount of swap for each vma.  This can be used to see where all the\nswap goes.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Matt Mackall \u003cmpm@selenic.com\u003e\nAcked-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e20b8cca760ed2a6abcfe37ef56f2306790db648",
      "tree": "85e5610364f73da193ee781be61710fddfbe045f",
      "parents": [
        "97965478a66fbdf0f4ad5e4ecc4828f0cb548a45"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 28 02:12:55 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:22 2008 -0700"
      },
      "message": "PAGEFLAGS_EXTENDED and separate page flags for Head and Tail\n\nHaving separate page flags for the head and the tail of a compound page allows\nthe compiler to use bitops instead of operations on a word to check for a tail\npage.  That is f.e.  important for virt_to_head_page() which is used in\nvarious critical code paths (kfree for example):\n\nCode for PageTail(page)\n\nBefore:\n\n mov    (%rdi),%rdx\t\tpage-\u003eflags\n mov    %rdx,%rax\t\t3 bytes\n and    $0x12000,%eax\t\t5 bytes\n cmp    $0x12000,%rax\t\t6 bytes\n je     897 \u003ckfree+0xa7\u003e\n\nAfter:\n\n mov    (%rdi),%rax\n test   $0x40,%ah\t\t\t(3 bytes)\n jne    887 \u003ckfree+0x97\u003e\n\nSo we go from 14 bytes to 3 bytes and from 3 instructions to one.  From the\nuse of 2 registers we go to none.\n\nWe can only use page flags for this if we have page flags available.  This\npatch introduces CONFIG_PAGEFLAGS_EXTENDED that is set if pageflags are not\nscarce due to SPARSEMEM using page flags for its sectionid on 32 bit NUMA\nplatforms.\n\nAdditional page flag definitions can be added to the CONFIG_PAGEFLAGS_EXTENDED\nsection in page-flags.h if the functionality depends on PAGEFLAGS_EXTENDED or\nif more page flag overlapping tricks are used for the !PAGEFLAGS_EXTENDED\nfallback (the upcoming virtual compound patch may hook in here and Rik\u0027s/Lee\u0027s\nadditional page flags to solve the reclaim issues could also be added there\n[hint...  hint...  where are these patchsets?]).\n\nAvoiding the overlaying of Pg_reclaim also clears the way for possible use of\ncompound pages for the pagecache or on the LRU.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "97965478a66fbdf0f4ad5e4ecc4828f0cb548a45",
      "tree": "a60bb6c46acdc35d16b2e48f5c13248fc009b35e",
      "parents": [
        "ec7cade8c1a3d1ace69b35cc843b181818578dce"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 28 02:12:54 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:22 2008 -0700"
      },
      "message": "mm: Get rid of __ZONE_COUNT\n\nIt was used to compensate because MAX_NR_ZONES was not available to the\n#ifdefs.  Export MAX_NR_ZONES via the new mechanism and get rid of\n__ZONE_COUNT.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ec7cade8c1a3d1ace69b35cc843b181818578dce",
      "tree": "32ab77ff6b58cb55834e729fa020eb91ef9940f0",
      "parents": [
        "602c4d112f9abf43af4b882b4a6f5505ed5c51b7"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 28 02:12:53 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:22 2008 -0700"
      },
      "message": "page flags: add PAGEFLAGS_FALSE for flags that are always false\n\nTurns out that there are a number of times that a flag is simply always\nreturning 0.  Define a macro for that.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "602c4d112f9abf43af4b882b4a6f5505ed5c51b7",
      "tree": "8c2cdb82fbf4c67899a3cab0ea0f2d3e2a3ffdfe",
      "parents": [
        "0a128b2b1a5e8ebce0260e3345812ee70daccc7f"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 28 02:12:52 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:22 2008 -0700"
      },
      "message": "page flags: handle PG_uncached like all other flags\n\nRemove the special setup for PG_uncached and simply make it part of the enum.\nThe page flag will only be allocated when the kernel build includes the\nuncached allocator.\n\nAcked-by: Dean Nelson \u003cdcn@sgi.com\u003e\nCc: Jes Sorensen \u003cjes@trained-monkey.org\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "0a128b2b1a5e8ebce0260e3345812ee70daccc7f",
      "tree": "a2ce711ea77ef4677cad4f613112b8d7b88b7e28",
      "parents": [
        "d60cd46bbdc5a79d9a177e40009f960e44f0e334"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 28 02:12:52 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:22 2008 -0700"
      },
      "message": "pageflags: eliminate PG_xxx aliases\n\nRemove aliases of PG_xxx.  We can easily drop those now and alias by\nspecifying the PG_xxx flag in the macro that generates the functions.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "d60cd46bbdc5a79d9a177e40009f960e44f0e334",
      "tree": "50bf8f927746dfd4a00583706646c405eec129eb",
      "parents": [
        "6a1e7f777f613bf0df99c7772fa2123d01ce2f7d"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 28 02:12:51 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:22 2008 -0700"
      },
      "message": "pageflags: use proper page flag functions in Xen\n\nXen uses bitops to manipulate page flags.  Make it use proper page flag\nfunctions.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "6a1e7f777f613bf0df99c7772fa2123d01ce2f7d",
      "tree": "144629e467c8dcb7b5c8d23adc2538047bfa5b08",
      "parents": [
        "f94a62e910840b3552c7adb7c57e0f8b3b345f6e"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 28 02:12:50 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:22 2008 -0700"
      },
      "message": "pageflags: convert to the use of new macros\n\nReplace explicit definitions of page flags through the use of macros.\nSignificantly reduces the size of the definitions and removes a lot of\nopportunity for errors.  Additonal page flags can typically be generated with\na single line.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "f94a62e910840b3552c7adb7c57e0f8b3b345f6e",
      "tree": "31444cdd24e640beea706d9b9f8da97f3a5c1639",
      "parents": [
        "9223b4190fa1297a59f292f3419fc0285321d0ea"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 28 02:12:49 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:22 2008 -0700"
      },
      "message": "pageflags: introduce macros to generate page flag functions\n\nIntroduce a set of macros that generate functions to handle page flags.\n\nA page flag function group typically starts with either\n\n\tSETPAGEFLAG(\u003cpart of function name\u003e,\u003cpart of PG_ flagname\u003e)\n\nto create a set of page flag operations that are atomic. Or\n\n\t__SETPAGEFLAG(\u003cpart of function name\u003e,\u003cpart of PG_ flagname)\n\nto create a set of page flag operations that are not atomic.\n\nThen additional operations can be added using the following macros\n\nTESTSCFLAG\t\tCreate additional atomic test-and-set and\n\t\t\ttest-and-clear functions\n\nTESTSETFLAG\t\tCreate additional test and set function\nTESTCLEARFLAG\t\tCreate additional test and clear function\nSETPAGEFLAG\t\tCreate additional atomic set function\nCLEARPAGEFLAG\t\tCreate additional atomic clear function\n__TESTPAGEFLAG\t\tCreate additional non atomic set function\n__SETPAGEFLAG\t\tCreate additional non atomic clear function\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "9223b4190fa1297a59f292f3419fc0285321d0ea",
      "tree": "c6fbbc6b4c35916232e95686194eea1bd9de7377",
      "parents": [
        "e26831814998cee8e6d9f0a9854cb46c516f5547"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 28 02:12:48 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:21 2008 -0700"
      },
      "message": "pageflags: get rid of FLAGS_RESERVED\n\nNR_PAGEFLAGS specifies the number of page flags we are using.  From that we\ncan calculate the number of bits leftover that can be used for zone, node (and\nmaybe the sections id).  There is no need anymore for FLAGS_RESERVED if we use\nNR_PAGEFLAGS.\n\nUse the new methods to make NR_PAGEFLAGS available via the preprocessor.\nNR_PAGEFLAGS is used to calculate field boundaries in the page flags fields.\nThese field widths have to be available to the preprocessor.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Miller \u003cdavem@davemloft.net\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e26831814998cee8e6d9f0a9854cb46c516f5547",
      "tree": "fb3dcd791ceaac8b04fdcc853c4839b032e64733",
      "parents": [
        "bf2ae2b37c06cc9fb6fc03d99617f1161939980f"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 28 02:12:47 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:21 2008 -0700"
      },
      "message": "pageflags: use an enum for the flags\n\nUse an enum to ease the maintenance of page flags.  This is going to change\nthe numbering from 0 to 18.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "bf2ae2b37c06cc9fb6fc03d99617f1161939980f",
      "tree": "3ffc871c7cf45eb08a51704f840778dda6db0cdc",
      "parents": [
        "726b80127239aeea9c8d8aad5b4e2c80313e3ce8"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 28 02:12:45 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:21 2008 -0700"
      },
      "message": "pageflags: standardize comment inclusion in asm-offsets.h and fix MIPS\n\nAdd the ability to pass comments into asm-offsets.h by generating asm\noutput like\n\n-\u003e# comment line\n\nMips needs this feature to preserve the comments that are in\nasm-mips/asm-offsets.h right now.\n\nThen remove the special handling for mips from Kbuild and convert mips to use\nthe new string to include the comments.\n\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Sam Ravnborg \u003csam@ravnborg.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "726b80127239aeea9c8d8aad5b4e2c80313e3ce8",
      "tree": "4b4df86f199f9bf9689f038132a8922f34a9c8d4",
      "parents": [
        "1cdf25d704f7951d02a04064c97db547d6021872"
      ],
      "author": {
        "name": "Andrew Morton",
        "email": "akpm@linux-foundation.org",
        "time": "Mon Apr 28 02:12:44 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:21 2008 -0700"
      },
      "message": "page_mapping(): add ifdef around reference to swapper_space\n\nThis fixes the superh build when the pageflags patches are applied.\n\nBut it shouldn\u0027t unless it\u0027s a gcc bug.\n\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "1cdf25d704f7951d02a04064c97db547d6021872",
      "tree": "2571b70c1d95ea66086500b362a0f7fe2999acbc",
      "parents": [
        "308c05e35e3517d19bb67a7e97772235c9e15cd7"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 28 02:12:44 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:21 2008 -0700"
      },
      "message": "kbuild: create a way to create preprocessor constants from C expressions\n\nThe use of enums create constants that are not available to the preprocessor\nwhen building the kernel (f.e.  MAX_NR_ZONES).\n\nArch code already has a way to export constants calculated to the preprocessor\nthrough the asm-offsets.c file.  Generate something similar for the core\nkernel through kbuild.\n\nSigned-off-by: Sam Ravnborg \u003csam@ravnborg.org\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "308c05e35e3517d19bb67a7e97772235c9e15cd7",
      "tree": "75d0eae800ef1fc7297f97262b42ddbd1347cad0",
      "parents": [
        "2301696932b55e2ea2085cefc84f7b94fa2dd54b"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 28 02:12:43 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:21 2008 -0700"
      },
      "message": "sparsemem: vmemmap does not need section bits\n\nA set of patches that attempts to improve page flag handling.  First of all a\nmethod is introduced to generate the page flag functions using macros.  Then\nthe number of page flags used by sparsemem is reduced.  All page flag\noperations will no longer be macros.  All flags will use inline function.\n\nThen we add a way to export enum constants to the preprocessor which allows us\nto get rid of __ZONE_COUNT and use the NR_PAGEFLAGS for the dynamic\ncalculation of actually available page flags for fields.\n\nThis patch:\n\nSparsemem vmemmap does not need any section bits.  This patch has the effect\nof reducing the number of bits used in page-\u003eflags by at least 6.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "2301696932b55e2ea2085cefc84f7b94fa2dd54b",
      "tree": "4a564951b4bd34feee922e59cac12962ac0f73c8",
      "parents": [
        "a10aa579878fc6f9cd17455067380bbdf1d53c91"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 28 02:12:42 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:21 2008 -0700"
      },
      "message": "vmallocinfo: add caller information\n\nAdd caller information so that /proc/vmallocinfo shows where the allocation\nrequest for a slice of vmalloc memory originated.\n\nResults in output like this:\n\n0xffffc20000000000-0xffffc20000801000 8392704 alloc_large_system_hash+0x127/0x246 pages\u003d2048 vmalloc vpages\n0xffffc20000801000-0xffffc20000806000   20480 alloc_large_system_hash+0x127/0x246 pages\u003d4 vmalloc\n0xffffc20000806000-0xffffc20000c07000 4198400 alloc_large_system_hash+0x127/0x246 pages\u003d1024 vmalloc vpages\n0xffffc20000c07000-0xffffc20000c0a000   12288 alloc_large_system_hash+0x127/0x246 pages\u003d2 vmalloc\n0xffffc20000c0a000-0xffffc20000c0c000    8192 acpi_os_map_memory+0x13/0x1c phys\u003dcff68000 ioremap\n0xffffc20000c0c000-0xffffc20000c0f000   12288 acpi_os_map_memory+0x13/0x1c phys\u003dcff64000 ioremap\n0xffffc20000c10000-0xffffc20000c15000   20480 acpi_os_map_memory+0x13/0x1c phys\u003dcff65000 ioremap\n0xffffc20000c16000-0xffffc20000c18000    8192 acpi_os_map_memory+0x13/0x1c phys\u003dcff69000 ioremap\n0xffffc20000c18000-0xffffc20000c1a000    8192 acpi_os_map_memory+0x13/0x1c phys\u003dfed1f000 ioremap\n0xffffc20000c1a000-0xffffc20000c1c000    8192 acpi_os_map_memory+0x13/0x1c phys\u003dcff68000 ioremap\n0xffffc20000c1c000-0xffffc20000c1e000    8192 acpi_os_map_memory+0x13/0x1c phys\u003dcff68000 ioremap\n0xffffc20000c1e000-0xffffc20000c20000    8192 acpi_os_map_memory+0x13/0x1c phys\u003dcff68000 ioremap\n0xffffc20000c20000-0xffffc20000c22000    8192 acpi_os_map_memory+0x13/0x1c phys\u003dcff68000 ioremap\n0xffffc20000c22000-0xffffc20000c24000    8192 acpi_os_map_memory+0x13/0x1c phys\u003dcff68000 ioremap\n0xffffc20000c24000-0xffffc20000c26000    8192 acpi_os_map_memory+0x13/0x1c phys\u003de0081000 ioremap\n0xffffc20000c26000-0xffffc20000c28000    8192 acpi_os_map_memory+0x13/0x1c phys\u003de0080000 ioremap\n0xffffc20000c28000-0xffffc20000c2d000   20480 alloc_large_system_hash+0x127/0x246 pages\u003d4 vmalloc\n0xffffc20000c2d000-0xffffc20000c31000   16384 tcp_init+0xd5/0x31c pages\u003d3 vmalloc\n0xffffc20000c31000-0xffffc20000c34000   12288 alloc_large_system_hash+0x127/0x246 pages\u003d2 vmalloc\n0xffffc20000c34000-0xffffc20000c36000    8192 init_vdso_vars+0xde/0x1f1\n0xffffc20000c36000-0xffffc20000c38000    8192 pci_iomap+0x8a/0xb4 phys\u003dd8e00000 ioremap\n0xffffc20000c38000-0xffffc20000c3a000    8192 usb_hcd_pci_probe+0x139/0x295 [usbcore] phys\u003dd8e00000 ioremap\n0xffffc20000c3a000-0xffffc20000c3e000   16384 sys_swapon+0x509/0xa15 pages\u003d3 vmalloc\n0xffffc20000c40000-0xffffc20000c61000  135168 e1000_probe+0x1c4/0xa32 phys\u003dd8a20000 ioremap\n0xffffc20000c61000-0xffffc20000c6a000   36864 _xfs_buf_map_pages+0x8e/0xc0 vmap\n0xffffc20000c6a000-0xffffc20000c73000   36864 _xfs_buf_map_pages+0x8e/0xc0 vmap\n0xffffc20000c73000-0xffffc20000c7c000   36864 _xfs_buf_map_pages+0x8e/0xc0 vmap\n0xffffc20000c7c000-0xffffc20000c7f000   12288 e1000e_setup_tx_resources+0x29/0xbe pages\u003d2 vmalloc\n0xffffc20000c80000-0xffffc20001481000 8392704 pci_mmcfg_arch_init+0x90/0x118 phys\u003de0000000 ioremap\n0xffffc20001481000-0xffffc20001682000 2101248 alloc_large_system_hash+0x127/0x246 pages\u003d512 vmalloc\n0xffffc20001682000-0xffffc20001e83000 8392704 alloc_large_system_hash+0x127/0x246 pages\u003d2048 vmalloc vpages\n0xffffc20001e83000-0xffffc20002204000 3674112 alloc_large_system_hash+0x127/0x246 pages\u003d896 vmalloc vpages\n0xffffc20002204000-0xffffc2000220d000   36864 _xfs_buf_map_pages+0x8e/0xc0 vmap\n0xffffc2000220d000-0xffffc20002216000   36864 _xfs_buf_map_pages+0x8e/0xc0 vmap\n0xffffc20002216000-0xffffc2000221f000   36864 _xfs_buf_map_pages+0x8e/0xc0 vmap\n0xffffc2000221f000-0xffffc20002228000   36864 _xfs_buf_map_pages+0x8e/0xc0 vmap\n0xffffc20002228000-0xffffc20002231000   36864 _xfs_buf_map_pages+0x8e/0xc0 vmap\n0xffffc20002231000-0xffffc20002234000   12288 e1000e_setup_rx_resources+0x35/0x122 pages\u003d2 vmalloc\n0xffffc20002240000-0xffffc20002261000  135168 e1000_probe+0x1c4/0xa32 phys\u003dd8a60000 ioremap\n0xffffc20002261000-0xffffc2000270c000 4894720 sys_swapon+0x509/0xa15 pages\u003d1194 vmalloc vpages\n0xffffffffa0000000-0xffffffffa0022000  139264 module_alloc+0x4f/0x55 pages\u003d33 vmalloc\n0xffffffffa0022000-0xffffffffa0029000   28672 module_alloc+0x4f/0x55 pages\u003d6 vmalloc\n0xffffffffa002b000-0xffffffffa0034000   36864 module_alloc+0x4f/0x55 pages\u003d8 vmalloc\n0xffffffffa0034000-0xffffffffa003d000   36864 module_alloc+0x4f/0x55 pages\u003d8 vmalloc\n0xffffffffa003d000-0xffffffffa0049000   49152 module_alloc+0x4f/0x55 pages\u003d11 vmalloc\n0xffffffffa0049000-0xffffffffa0050000   28672 module_alloc+0x4f/0x55 pages\u003d6 vmalloc\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "a10aa579878fc6f9cd17455067380bbdf1d53c91",
      "tree": "c42fbb1e9422e5334c2207cafed4a2b5b1ad16c4",
      "parents": [
        "b45445684198a946b587732265692e6495993abf"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 28 02:12:40 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:21 2008 -0700"
      },
      "message": "vmalloc: show vmalloced areas via /proc/vmallocinfo\n\nImplement a new proc file that allows the display of the currently allocated\nvmalloc memory.\n\nIt allows to see the users of vmalloc.  That is important if vmalloc space is\nscarce (i386 for example).\n\nAnd it\u0027s going to be important for the compound page fallback to vmalloc.\nMany of the current users can be switched to use compound pages with fallback.\n This means that the number of users of vmalloc is reduced and page tables no\nlonger necessary to access the memory.  /proc/vmallocinfo allows to review how\nthat reduction occurs.\n\nIf memory becomes fragmented and larger order allocations are no longer\npossible then /proc/vmallocinfo allows to see which compound page allocations\nfell back to virtual compound pages.  That is important for new users of\nvirtual compound pages.  Such as order 1 stack allocation etc that may\nfallback to virtual compound pages in the future.\n\n/proc/vmallocinfo permissions are made readable-only-by-root to avoid possible\ninformation leakage.\n\n[akpm@linux-foundation.org: coding-style fixes]\n[akpm@linux-foundation.org: CONFIG_MMU\u003dn build fix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Arjan van de Ven \u003carjan@infradead.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "b45445684198a946b587732265692e6495993abf",
      "tree": "0ffe64205f396bb00f6dfd3cbee630a1d0a975e7",
      "parents": [
        "ac6aadb24b7d4f0e54246732e221c102073412bf"
      ],
      "author": {
        "name": "Andrew Morton",
        "email": "akpm@linux-foundation.org",
        "time": "Mon Apr 28 02:12:39 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:20 2008 -0700"
      },
      "message": "mm: make early_pfn_to_nid() a C function\n\nFix this (sparc64)\n\nmm/sparse-vmemmap.c: In function `vmemmap_verify\u0027:\nmm/sparse-vmemmap.c:64: warning: unused variable `pfn\u0027\n\nby switching to a C function which touches its arg.\n\n(reason 3,555 why macros are bad)\n\nAlso, the `nid\u0027 arg was misnamed.\n\nReviewed-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ac6aadb24b7d4f0e54246732e221c102073412bf",
      "tree": "1936c3e847fca977b8c0d650416c66655f7633ad",
      "parents": [
        "f05111f50105ac479a008cf85749cf9c956453ea"
      ],
      "author": {
        "name": "Miklos Szeredi",
        "email": "mszeredi@suse.cz",
        "time": "Mon Apr 28 02:12:38 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:20 2008 -0700"
      },
      "message": "mm: rotate_reclaimable_page() cleanup\n\nClean up messy conditional calling of test_clear_page_writeback() from both\nrotate_reclaimable_page() and end_page_writeback().\n\nThe only user of rotate_reclaimable_page() is end_page_writeback() so this is\nOK.\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "f05111f50105ac479a008cf85749cf9c956453ea",
      "tree": "59126a7962c08f77c1e4a9de68998f479b5e8e11",
      "parents": [
        "7edf85aa3c00df1e86e82f649c41efa0dd8a7218"
      ],
      "author": {
        "name": "S.Caglar Onur",
        "email": "caglar@pardus.org.tr",
        "time": "Mon Apr 28 02:12:38 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:20 2008 -0700"
      },
      "message": "mm/page_alloc.c: fix indentation\n\nzlc_setup(): handle jiffies wraparound\n(10ed273f5016c582413dfbc468dd084957d847e1) changes tab with spaces\n\nSigned-off-by: S.Caglar Onur \u003ccaglar@pardus.org.tr\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "7edf85aa3c00df1e86e82f649c41efa0dd8a7218",
      "tree": "9f6ee8e78076a55031642a1660ce9e1760ad79fb",
      "parents": [
        "b5ee5befa75e33e55d34584ad10286c5005cb1de"
      ],
      "author": {
        "name": "Andi Kleen",
        "email": "ak@suse.de",
        "time": "Mon Apr 28 02:12:37 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:20 2008 -0700"
      },
      "message": "mm: save some bytes in mm_struct by filling holes on 64bit\n\nSave some bytes in mm_struct by filling holes\n\nPutting int values together for better packing on 64bit shrinks sizeof(struct\nmm_struct) from 776 bytes to 764 bytes.\n\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "b5ee5befa75e33e55d34584ad10286c5005cb1de",
      "tree": "cc8953411811c75eeffe53dc387fad66dec92144",
      "parents": [
        "a43361cf3cb6fb6431fdbfb0f3ef26a334826160"
      ],
      "author": {
        "name": "Andi Kleen",
        "email": "ak@suse.de",
        "time": "Mon Apr 28 02:12:37 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:20 2008 -0700"
      },
      "message": "dmapool: enable debugging for CONFIG_SLUB_DEBUG_ON too\n\nPreviously it was only enabled for CONFIG_DEBUG_SLAB.\n\nNot hooked into the slub runtime debug configuration, so you currently only\nget it with CONFIG_SLUB_DEBUG_ON, not plain CONFIG_SLUB_DEBUG\n\nAcked-by: Matthew Wilcox \u003cwilly@linux.intel.com\u003e\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "a43361cf3cb6fb6431fdbfb0f3ef26a334826160",
      "tree": "8ec343f73bb61c1ef08a32c78e912a7506c932bf",
      "parents": [
        "3e1f064562fcff7bf3856bc1d00dfa84d4f121cc"
      ],
      "author": {
        "name": "Lee Schermerhorn",
        "email": "Lee.Schermerhorn@hp.com",
        "time": "Mon Apr 28 02:12:36 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:20 2008 -0700"
      },
      "message": "mempolicy: fix parsing of tmpfs mpol mount option\n\nParsing of new mode flags in the tmpfs mpol mount option is slightly broken:\n\nSetting a valid flag works OK:\n\t#mount -o remount,mpol\u003dbind\u003dstatic:1-2 /dev/shm\n\t#mount\n\t...\n\ttmpfs on /dev/shm type tmpfs (rw,mpol\u003dbind\u003dstatic:1-2)\n\t...\n\nHowever, we can\u0027t remove them or change them, once we\u0027ve\nset a valid flag:\n\n\t#mount -o remount,mpol\u003dbind:1-2 /dev/shm\n\t#mount\n\t...\n\ttmpfs on /dev/shm type tmpfs (rw,mpol\u003dbind:1-2)\n\t...\n\nIt SAYS it removed it, but that\u0027s just a copy of the input\nstring.  If we now try to set it to a different flag, we\nget:\n\n\t#mount -o remount,mpol\u003dbind\u003drelative:1-2 /dev/shm\n\tmount: /dev/shm not mounted already, or bad option\n\nAnd on the console, we see:\n\ttmpfs: Bad value \u0027bind\u0027 for mount option \u0027mpol\u0027\n\t                      ^ lost remainder of string\n\nFurthermore, bogus flags are accepted with out error.\nGranted, they are a no-op:\n\n\t#mount -o remount,mpol\u003dinterleave\u003dfoo:0-3 /dev/shm\n\t#mount\n\t...\n\ttmpfs on /dev/shm type tmpfs (rw,mpol\u003dinterleave\u003dfoo:0-3)\n\nAgain, that\u0027s just a copy of the input string shown by the mount command.\n\nThis patch fixes the behavior by pre-zeroing the flags so that only one of the\nmutually exclusive flags can be set at one time.  It also reports an error\nwhen an unrecognized flag is specified.\n\nThe check for both flags being set is removed because it can\u0027t happen with\nthis implementation.  If we ever want to support multiple non-exclusive flags,\nthis area will need rework and we will need to check that any mutually\nexclusive flags aren\u0027t specified.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Eric Whitney \u003ceric.whitney@hp.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "3e1f064562fcff7bf3856bc1d00dfa84d4f121cc",
      "tree": "9ebc17449238ab5284b72f634405044376dc816b",
      "parents": [
        "3842b46de626d1a3c44ad280d67ab0a4dc047d13"
      ],
      "author": {
        "name": "David Rientjes",
        "email": "rientjes@google.com",
        "time": "Mon Apr 28 02:12:34 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:20 2008 -0700"
      },
      "message": "mempolicy: disallow static or relative flags for local preferred mode\n\nMPOL_F_STATIC_NODES and MPOL_F_RELATIVE_NODES don\u0027t mean anything for\nMPOL_PREFERRED policies that were created with an empty nodemask (for purely\nlocal allocations).  They\u0027ll never be invalidated because the allowed mems of\na task changes or need to be rebound relative to a cpuset\u0027s placement.\n\nAlso fixes a bug identified by Lee Schermerhorn that disallowed empty\nnodemasks to be passed to MPOL_PREFERRED to specify local allocations.  [A\ndifferent, somewhat incomplete, patch already existed in 25-rc5-mm1.]\n\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "3842b46de626d1a3c44ad280d67ab0a4dc047d13",
      "tree": "b3ed5977e3fa16300fb285aa7212fe2597aed9d0",
      "parents": [
        "37012946da940521fb997a758a219d2f1ab56e51"
      ],
      "author": {
        "name": "David Rientjes",
        "email": "rientjes@google.com",
        "time": "Mon Apr 28 02:12:34 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:20 2008 -0700"
      },
      "message": "mempolicy: small header file cleanup\n\nRemoves forward definition of vm_area_struct in linux/mempolicy.h.  We already\nget it from the linux/slab.h -\u003e linux/gfp.h include.\n\nRemoves the unused mpol_set_vma_default() macro from linux/mempolicy.h.\n\nRemoves the extern definition of default_policy since it is only referenced,\nas it should be, in mm/mempolicy.c.\n\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "37012946da940521fb997a758a219d2f1ab56e51",
      "tree": "16553f91325720a53d0314070793700b5926e052",
      "parents": [
        "1d0d2680a01c4f9e292ec6d4714884da939053a1"
      ],
      "author": {
        "name": "David Rientjes",
        "email": "rientjes@google.com",
        "time": "Mon Apr 28 02:12:33 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:20 2008 -0700"
      },
      "message": "mempolicy: create mempolicy_operations structure\n\nCreate a mempolicy_operations structure that currently points to two\nfunctions[*] for the various modes:\n\n\tint (*create)(struct mempolicy *, const nodemask_t *);\n\tvoid (*rebind)(struct mempolicy *, const nodemask_t *);\n\nThis splits the implementation for the various modes out of two large\nfunctions, mpol_new() and mpol_rebind_policy().  Eventually it may be\nbeneficial to add additional functions to accomodate the existing switch()\nstatements in mm/mempolicy.c.\n\n [*] The -\u003ecreate() function for MPOL_DEFAULT is currently NULL since no\n     struct mempolicy is dynamically allocated.\n\n[Lee.Schermerhorn@hp.com: fix regression in the package mempolicy regression tests]\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Eric Whitney \u003ceric.whitney@hp.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "1d0d2680a01c4f9e292ec6d4714884da939053a1",
      "tree": "1377ed40ec15ffecc584b308a671be47b5145db3",
      "parents": [
        "65d66fc02ed9433b957588071b60425b12628e25"
      ],
      "author": {
        "name": "David Rientjes",
        "email": "rientjes@google.com",
        "time": "Mon Apr 28 02:12:32 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:20 2008 -0700"
      },
      "message": "mempolicy: move rebind functions\n\nMove the mpol_rebind_{policy,task,mm}() functions after mpol_new() to avoid\nhaving to declare function prototypes.\n\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "65d66fc02ed9433b957588071b60425b12628e25",
      "tree": "8737b2e5d018dc9e9d310d9b032fbeeecd588e62",
      "parents": [
        "4c50bc0116cf3cc35e7152d6a8424b4db65f52d6"
      ],
      "author": {
        "name": "David Rientjes",
        "email": "rientjes@google.com",
        "time": "Mon Apr 28 02:12:31 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:19 2008 -0700"
      },
      "message": "mempolicy: update NUMA memory policy documentation\n\nUpdates Documentation/vm/numa_memory_policy.txt and\nDocumentation/filesystems/tmpfs.txt to describe optional mempolicy mode flags.\n\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Paul Jackson \u003cpj@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "4c50bc0116cf3cc35e7152d6a8424b4db65f52d6",
      "tree": "99c617602cc1946fc86b48e9a35f14f9f354cf67",
      "parents": [
        "7ea931c9fc80c4d0a4306c30ec92eb0f1d922a0b"
      ],
      "author": {
        "name": "David Rientjes",
        "email": "rientjes@google.com",
        "time": "Mon Apr 28 02:12:30 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:19 2008 -0700"
      },
      "message": "mempolicy: add MPOL_F_RELATIVE_NODES flag\n\nAdds another optional mode flag, MPOL_F_RELATIVE_NODES, that specifies\nnodemasks passed via set_mempolicy() or mbind() should be considered relative\nto the current task\u0027s mems_allowed.\n\nWhen the mempolicy is created, the passed nodemask is folded and mapped onto\nthe current task\u0027s mems_allowed.  For example, consider a task using\nset_mempolicy() to pass MPOL_INTERLEAVE | MPOL_F_RELATIVE_NODES with a\nnodemask of 1-3.  If current\u0027s mems_allowed is 4-7, the effected nodemask is\n5-7 (the second, third, and fourth node of mems_allowed).\n\nIf the same task is attached to a cpuset, the mempolicy nodemask is rebound\neach time the mems are changed.  Some possible rebinds and results are:\n\n\tmems\t\t\tresult\n\t1-3\t\t\t1-3\n\t1-7\t\t\t2-4\n\t1,5-6\t\t\t1,5-6\n\t1,5-7\t\t\t5-7\n\nLikewise, the zonelist built for MPOL_BIND acts on the set of zones assigned\nto the resultant nodemask from the relative remap.\n\nIn the MPOL_PREFERRED case, the preferred node is remapped from the currently\neffected nodemask to the relative nodemask.\n\nThis mempolicy mode flag was conceived of by Paul Jackson \u003cpj@sgi.com\u003e.\n\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "7ea931c9fc80c4d0a4306c30ec92eb0f1d922a0b",
      "tree": "4f2c85d658c75e8679e01943e3e95866b3729b54",
      "parents": [
        "f5b087b52f1710eb0bf15a2d2b030c51a6a1ca9e"
      ],
      "author": {
        "name": "Paul Jackson",
        "email": "pj@sgi.com",
        "time": "Mon Apr 28 02:12:29 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:19 2008 -0700"
      },
      "message": "mempolicy: add bitmap_onto() and bitmap_fold() operations\n\nThe following adds two more bitmap operators, bitmap_onto() and bitmap_fold(),\nwith the usual cpumask and nodemask wrappers.\n\nThe bitmap_onto() operator computes one bitmap relative to another.  If the\nn-th bit in the origin mask is set, then the m-th bit of the destination mask\nwill be set, where m is the position of the n-th set bit in the relative mask.\n\nThe bitmap_fold() operator folds a bitmap into a second that has bit m set iff\nthe input bitmap has some bit n set, where m \u003d\u003d n mod sz, for the specified sz\nvalue.\n\nThere are two substantive changes between this patch and its\npredecessor bitmap_relative:\n 1) Renamed bitmap_relative() to be bitmap_onto().\n 2) Added bitmap_fold().\n\nThe essential motivation for bitmap_onto() is to provide a mechanism for\nconverting a cpuset-relative CPU or Node mask to an absolute mask.  Cpuset\nrelative masks are written as if the current task were in a cpuset whose CPUs\nor Nodes were just the consecutive ones numbered 0..N-1, for some N.  The\nbitmap_onto() operator is provided in anticipation of adding support for the\nfirst such cpuset relative mask, by the mbind() and set_mempolicy() system\ncalls, using a planned flag of MPOL_F_RELATIVE_NODES.  These bitmap operators\n(and their nodemask wrappers, in particular) will be used in code that\nconverts the user specified cpuset relative memory policy to a specific system\nnode numbered policy, given the current mems_allowed of the tasks cpuset.\n\nSuch cpuset relative mempolicies will address two deficiencies\nof the existing interface between cpusets and mempolicies:\n 1) A task cannot at present reliably establish a cpuset\n    relative mempolicy because there is an essential race\n    condition, in that the tasks cpuset may be changed in\n    between the time the task can query its cpuset placement,\n    and the time the task can issue the applicable mbind or\n    set_memplicy system call.\n 2) A task cannot at present establish what cpuset relative\n    mempolicy it would like to have, if it is in a smaller\n    cpuset than it might have mempolicy preferences for,\n    because the existing interface only allows specifying\n    mempolicies for nodes currently allowed by the cpuset.\n\nCpuset relative mempolicies are useful for tasks that don\u0027t distinguish\nparticularly between one CPU or Node and another, but only between how many of\neach are allowed, and the proper placement of threads and memory pages on the\nvarious CPUs and Nodes available.\n\nThe motivation for the added bitmap_fold() can be seen in the following\nexample.\n\nLet\u0027s say an application has specified some mempolicies that presume 16 memory\nnodes, including say a mempolicy that specified MPOL_F_RELATIVE_NODES (cpuset\nrelative) nodes 12-15.  Then lets say that application is crammed into a\ncpuset that only has 8 memory nodes, 0-7.  If one just uses bitmap_onto(),\nthis mempolicy, mapped to that cpuset, would ignore the requested relative\nnodes above 7, leaving it empty of nodes.  That\u0027s not good; better to fold the\nhigher nodes down, so that some nodes are included in the resulting mapped\nmempolicy.  In this case, the mempolicy nodes 12-15 are taken modulo 8 (the\nweight of the mems_allowed of the confining cpuset), resulting in a mempolicy\nspecifying nodes 4-7.\n\nSigned-off-by: Paul Jackson \u003cpj@sgi.com\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: \u003cray-lk@madrabbit.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "f5b087b52f1710eb0bf15a2d2b030c51a6a1ca9e",
      "tree": "66336235822f59215707dfa501e1d2b66b38a015",
      "parents": [
        "028fec414d803117eb4b2ed12acb4dd5da65b32d"
      ],
      "author": {
        "name": "David Rientjes",
        "email": "rientjes@google.com",
        "time": "Mon Apr 28 02:12:27 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:19 2008 -0700"
      },
      "message": "mempolicy: add MPOL_F_STATIC_NODES flag\n\nAdd an optional mempolicy mode flag, MPOL_F_STATIC_NODES, that suppresses the\nnode remap when the policy is rebound.\n\nAdds another member to struct mempolicy, nodemask_t user_nodemask, as part of\na union with cpuset_mems_allowed:\n\n\tstruct mempolicy {\n\t\t...\n\t\tunion {\n\t\t\tnodemask_t cpuset_mems_allowed;\n\t\t\tnodemask_t user_nodemask;\n\t\t} w;\n\t}\n\nthat stores the the nodemask that the user passed when he or she created the\nmempolicy via set_mempolicy() or mbind().  When using MPOL_F_STATIC_NODES,\nwhich is passed with any mempolicy mode, the user\u0027s passed nodemask\nintersected with the VMA or task\u0027s allowed nodes is always used when\ndetermining the preferred node, setting the MPOL_BIND zonelist, or creating\nthe interleave nodemask.  This happens whenever the policy is rebound,\nincluding when a task\u0027s cpuset assignment changes or the cpuset\u0027s mems are\nchanged.\n\nThis creates an interesting side-effect in that it allows the mempolicy\n\"intent\" to lie dormant and uneffected until it has access to the node(s) that\nit desires.  For example, if you currently ask for an interleaved policy over\na set of nodes that you do not have access to, the mempolicy is not created\nand the task continues to use the previous policy.  With this change, however,\nit is possible to create the same mempolicy; it is only effected when access\nto nodes in the nodemask is acquired.\n\nIt is also possible to mount tmpfs with the static nodemask behavior when\nspecifying a node or nodemask.  To do this, simply add \"\u003dstatic\" immediately\nfollowing the mempolicy mode at mount time:\n\n\tmount -o remount mpol\u003dinterleave\u003dstatic:1-3\n\nAlso removes mpol_check_policy() and folds its logic into mpol_new() since it\nis now obsoleted.  The unused vma_mpol_equal() is also removed.\n\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "028fec414d803117eb4b2ed12acb4dd5da65b32d",
      "tree": "427f37ea0331369c1babc55c424c4fd2ac3b39f5",
      "parents": [
        "a3b51e0142d1be156ac697eaadadd6cfbb7ba32b"
      ],
      "author": {
        "name": "David Rientjes",
        "email": "rientjes@google.com",
        "time": "Mon Apr 28 02:12:25 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:19 2008 -0700"
      },
      "message": "mempolicy: support optional mode flags\n\nWith the evolution of mempolicies, it is necessary to support mempolicy mode\nflags that specify how the policy shall behave in certain circumstances.  The\nmost immediate need for mode flag support is to suppress remapping the\nnodemask of a policy at the time of rebind.\n\nBoth the mempolicy mode and flags are passed by the user in the \u0027int policy\u0027\nformal of either the set_mempolicy() or mbind() syscall.  A new constant,\nMPOL_MODE_FLAGS, represents the union of legal optional flags that may be\npassed as part of this int.  Mempolicies that include illegal flags as part of\ntheir policy are rejected as invalid.\n\nAn additional member to struct mempolicy is added to support the mode flags:\n\n\tstruct mempolicy {\n\t\t...\n\t\tunsigned short policy;\n\t\tunsigned short flags;\n\t}\n\nThe splitting of the \u0027int\u0027 actual passed by the user is done in\nsys_set_mempolicy() and sys_mbind() for their respective syscalls.  This is\ndone by intersecting the actual with MPOL_MODE_FLAGS, rejecting the syscall of\nthere are additional flags, and storing it in the new \u0027flags\u0027 member of struct\nmempolicy.  The intersection of the actual with ~MPOL_MODE_FLAGS is stored in\nthe \u0027policy\u0027 member of the struct and all current users of pol-\u003epolicy remain\nunchanged.\n\nThe union of the policy mode and optional mode flags is passed back to the\nuser in get_mempolicy().\n\nThis combination of mode and flags within the same actual does not break\nuserspace code that relies on get_mempolicy(\u0026policy, ...) and either\n\n\tswitch (policy) {\n\tcase MPOL_BIND:\n\t\t...\n\tcase MPOL_INTERLEAVE:\n\t\t...\n\t};\n\nstatements or\n\n\tif (policy \u003d\u003d MPOL_INTERLEAVE) {\n\t\t...\n\t}\n\nstatements.  Such applications would need to use optional mode flags when\ncalling set_mempolicy() or mbind() for these previously implemented statements\nto stop working.  If an application does start using optional mode flags, it\nwill need to mask the optional flags off the policy in switch and conditional\nstatements that only test mode.\n\nAn additional member is also added to struct shmem_sb_info to store the\noptional mode flags.\n\n[hugh@veritas.com: shmem mpol: fix build warning]\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "a3b51e0142d1be156ac697eaadadd6cfbb7ba32b",
      "tree": "da9e527316f112c09f0bc16553c64e3c87125c82",
      "parents": [
        "1b27d05b6e21249d2338be26dfcbe8f8d8ff8a5b"
      ],
      "author": {
        "name": "David Rientjes",
        "email": "rientjes@google.com",
        "time": "Mon Apr 28 02:12:23 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:19 2008 -0700"
      },
      "message": "mempolicy: convert MPOL constants to enum\n\nThe mempolicy mode constants, MPOL_DEFAULT, MPOL_PREFERRED, MPOL_BIND, and\nMPOL_INTERLEAVE, are better declared as part of an enum since they are\nsequentially numbered and cannot be combined.\n\nThe policy member of struct mempolicy is also converted from type short to\ntype unsigned short.  A negative policy does not have any legitimate meaning,\nso it is possible to change its type in preparation for adding optional mode\nflags later.\n\nThe equivalent member of struct shmem_sb_info is also changed from int to\nunsigned short.\n\nFor compatibility, the policy formal to get_mempolicy() remains as a pointer\nto an int:\n\n\tint get_mempolicy(int *policy, unsigned long *nmask,\n\t\t\t  unsigned long maxnode, unsigned long addr,\n\t\t\t  unsigned long flags);\n\nalthough the only possible values is the range of type unsigned short.\n\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "1b27d05b6e21249d2338be26dfcbe8f8d8ff8a5b",
      "tree": "c5413d5f64efed1aa84bfa0ab718f1e2a2f6f9cb",
      "parents": [
        "19fc3f0acde32636529969570055c7e2a744787c"
      ],
      "author": {
        "name": "Pekka Enberg",
        "email": "penberg@cs.helsinki.fi",
        "time": "Mon Apr 28 02:12:22 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:19 2008 -0700"
      },
      "message": "mm: move cache_line_size() to \u003clinux/cache.h\u003e\n\nNot all architectures define cache_line_size() so as suggested by Andrew move\nthe private implementations in mm/slab.c and mm/slob.c to \u003clinux/cache.h\u003e.\n\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nReviewed-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "19fc3f0acde32636529969570055c7e2a744787c",
      "tree": "abcd29adbebe027eb2f3f13770e63662c22c7975",
      "parents": [
        "797df5749032c2286bc7ff3a52de41fde0cdf0a5"
      ],
      "author": {
        "name": "Adam Litke",
        "email": "agl@us.ibm.com",
        "time": "Mon Apr 28 02:12:20 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:19 2008 -0700"
      },
      "message": "hugetlb: decrease hugetlb_lock cycling in gather_surplus_huge_pages\n\nTo reduce hugetlb_lock acquisitions and releases when freeing excess surplus\npages, scan the page list in two parts.  First, transfer the needed pages to\nthe hugetlb pool.  Then drop the lock and free the remaining pages back to the\nbuddy allocator.\n\nIn the common case there are zero excess pages and no lock operations are\nrequired.\n\nThanks Mel Gorman for this improvement.\n\nSigned-off-by: Adam Litke \u003cagl@us.ibm.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: William Lee Irwin III \u003cwli@holomorphy.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: David Gibson \u003cdavid@gibson.dropbear.id.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "797df5749032c2286bc7ff3a52de41fde0cdf0a5",
      "tree": "38ebb9f0672c6eeab3269cc875f22422fa2c908b",
      "parents": [
        "19770b32609b6bf97a3dece2529089494cbfc549"
      ],
      "author": {
        "name": "Chris Dearman",
        "email": "chris@mips.com",
        "time": "Mon Apr 28 02:12:19 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:19 2008 -0700"
      },
      "message": "mm: try both endianess when checking for endianess\n\nWhen checking for the swap header try byteswapping the endianess dependent\nfields to allow the swap partition to be shared between big \u0026 little endian\nsystems.\n\nSigned-off-by: Chris Dearman \u003cchris@mips.com\u003e\nSigned-off-by: Ralf Baechle \u003cralf@linux-mips.org\u003e\nAcked-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "19770b32609b6bf97a3dece2529089494cbfc549",
      "tree": "3b5922d1b20aabdf929bde9309f323841717747a",
      "parents": [
        "dd1a239f6f2d4d3eedd318583ec319aa145b324c"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Mon Apr 28 02:12:18 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:19 2008 -0700"
      },
      "message": "mm: filter based on a nodemask as well as a gfp_mask\n\nThe MPOL_BIND policy creates a zonelist that is used for allocations\ncontrolled by that mempolicy.  As the per-node zonelist is already being\nfiltered based on a zone id, this patch adds a version of __alloc_pages() that\ntakes a nodemask for further filtering.  This eliminates the need for\nMPOL_BIND to create a custom zonelist.\n\nA positive benefit of this is that allocations using MPOL_BIND now use the\nlocal node\u0027s distance-ordered zonelist instead of a custom node-id-ordered\nzonelist.  I.e., pages will be allocated from the closest allowed node with\navailable memory.\n\n[Lee.Schermerhorn@hp.com: Mempolicy: update stale documentation and comments]\n[Lee.Schermerhorn@hp.com: Mempolicy: make dequeue_huge_page_vma() obey MPOL_BIND nodemask]\n[Lee.Schermerhorn@hp.com: Mempolicy: make dequeue_huge_page_vma() obey MPOL_BIND nodemask rework]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "dd1a239f6f2d4d3eedd318583ec319aa145b324c",
      "tree": "aff4224c96b5e2e67588c3946858a724863eeaf9",
      "parents": [
        "54a6eb5c4765aa573a030ceeba2c14e3d2ea5706"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Mon Apr 28 02:12:17 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:18 2008 -0700"
      },
      "message": "mm: have zonelist contains structs with both a zone pointer and zone_idx\n\nFiltering zonelists requires very frequent use of zone_idx().  This is costly\nas it involves a lookup of another structure and a substraction operation.  As\nthe zone_idx is often required, it should be quickly accessible.  The node idx\ncould also be stored here if it was found that accessing zone-\u003enode is\nsignificant which may be the case on workloads where nodemasks are heavily\nused.\n\nThis patch introduces a struct zoneref to store a zone pointer and a zone\nindex.  The zonelist then consists of an array of these struct zonerefs which\nare looked up as necessary.  Helpers are given for accessing the zone index as\nwell as the node index.\n\n[kamezawa.hiroyu@jp.fujitsu.com: Suggested struct zoneref instead of embedding information in pointers]\n[hugh@veritas.com: mm-have-zonelist: fix memcg ooms]\n[hugh@veritas.com: just return do_try_to_free_pages]\n[hugh@veritas.com: do_try_to_free_pages gfp_mask redundant]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "54a6eb5c4765aa573a030ceeba2c14e3d2ea5706",
      "tree": "547176a090beb787722a153cf2b8b942dc0e68db",
      "parents": [
        "18ea7e710d2452fa726814a406779188028cf1bf"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Mon Apr 28 02:12:16 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:18 2008 -0700"
      },
      "message": "mm: use two zonelist that are filtered by GFP mask\n\nCurrently a node has two sets of zonelists, one for each zone type in the\nsystem and a second set for GFP_THISNODE allocations.  Based on the zones\nallowed by a gfp mask, one of these zonelists is selected.  All of these\nzonelists consume memory and occupy cache lines.\n\nThis patch replaces the multiple zonelists per-node with two zonelists.  The\nfirst contains all populated zones in the system, ordered by distance, for\nfallback allocations when the target/preferred node has no free pages.  The\nsecond contains all populated zones in the node suitable for GFP_THISNODE\nallocations.\n\nAn iterator macro is introduced called for_each_zone_zonelist() that interates\nthrough each zone allowed by the GFP flags in the selected zonelist.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "18ea7e710d2452fa726814a406779188028cf1bf",
      "tree": "dfa439770b4344ade1ad8bd4fe70920ad66ee064",
      "parents": [
        "0e88460da6ab7bb6a7ef83675412ed5b6315d741"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Mon Apr 28 02:12:14 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:18 2008 -0700"
      },
      "message": "mm: remember what the preferred zone is for zone_statistics\n\nOn NUMA, zone_statistics() is used to record events like numa hit, miss and\nforeign.  It assumes that the first zone in a zonelist is the preferred zone.\nWhen multiple zonelists are replaced by one that is filtered, this is no\nlonger the case.\n\nThis patch records what the preferred zone is rather than assuming the first\nzone in the zonelist is it.  This simplifies the reading of later patches in\nthis set.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nReviewed-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "0e88460da6ab7bb6a7ef83675412ed5b6315d741",
      "tree": "1feb4de2362e4998a0deeab66af1efb9c7b8bb34",
      "parents": [
        "dac1d27bc8d5ca636d3014ecfdf94407031d1970"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Mon Apr 28 02:12:14 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:18 2008 -0700"
      },
      "message": "mm: introduce node_zonelist() for accessing the zonelist for a GFP mask\n\nIntroduce a node_zonelist() helper function.  It is used to lookup the\nappropriate zonelist given a node and a GFP mask.  The patch on its own is a\ncleanup but it helps clarify parts of the two-zonelist-per-node patchset.  If\nnecessary, it can be merged with the next patch in this set without problems.\n\nReviewed-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "dac1d27bc8d5ca636d3014ecfdf94407031d1970",
      "tree": "2d92f6533f91da05c5f3d61e314f36b9313be89a",
      "parents": [
        "9d02dbc8137759e4c2f91db0b7f9c8a1ec2a9276"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Mon Apr 28 02:12:12 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:18 2008 -0700"
      },
      "message": "mm: use zonelists instead of zones when direct reclaiming pages\n\nThe following patches replace multiple zonelists per node with two zonelists\nthat are filtered based on the GFP flags.  The patches as a set fix a bug with\nregard to the use of MPOL_BIND and ZONE_MOVABLE.  With this patchset, the\nMPOL_BIND will apply to the two highest zones when the highest zone is\nZONE_MOVABLE.  This should be considered as an alternative fix for the\nMPOL_BIND+ZONE_MOVABLE in 2.6.23 to the previously discussed hack that filters\nonly custom zonelists.\n\nThe first patch cleans up an inconsistency where direct reclaim uses\nzonelist-\u003ezones where other places use zonelist.\n\nThe second patch introduces a helper function node_zonelist() for looking up\nthe appropriate zonelist for a GFP mask which simplifies patches later in the\nset.\n\nThe third patch defines/remembers the \"preferred zone\" for numa statistics, as\nit is no longer always the first zone in a zonelist.\n\nThe forth patch replaces multiple zonelists with two zonelists that are\nfiltered.  The two zonelists are due to the fact that the memoryless patchset\nintroduces a second set of zonelists for __GFP_THISNODE.\n\nThe fifth patch introduces helper macros for retrieving the zone and node\nindices of entries in a zonelist.\n\nThe final patch introduces filtering of the zonelists based on a nodemask.\nTwo zonelists exist per node, one for normal allocations and one for\n__GFP_THISNODE.\n\nPerformance results varied depending on the machine configuration.  In real\nworkloads the gain/loss will depend on how much the userspace portion of the\nbenchmark benefits from having more cache available due to reduced referencing\nof zonelists.\n\nThese are the range of performance losses/gains when running against\n2.6.24-rc4-mm1.  The set and these machines are a mix of i386, x86_64 and\nppc64 both NUMA and non-NUMA.\n\t\t\t     loss   to  gain\nTotal CPU time on Kernbench: -0.86% to  1.13%\nElapsed   time on Kernbench: -0.79% to  0.76%\npage_test from aim9:         -4.37% to  0.79%\nbrk_test  from aim9:         -0.71% to  4.07%\nfork_test from aim9:         -1.84% to  4.60%\nexec_test from aim9:         -0.71% to  1.08%\n\nThis patch:\n\nThe allocator deals with zonelists which indicate the order in which zones\nshould be targeted for an allocation.  Similarly, direct reclaim of pages\niterates over an array of zones.  For consistency, this patch converts direct\nreclaim to use a zonelist.  No functionality is changed by this patch.  This\nsimplifies zonelist iterators in the next patch.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "9d02dbc8137759e4c2f91db0b7f9c8a1ec2a9276",
      "tree": "f08ac5f852d81afb593f80e7bbd0a0a7cff3fb2f",
      "parents": [
        "3c18ddd160d1fcd46d1131d9ad6c594dd8e9af99"
      ],
      "author": {
        "name": "Adrian Bunk",
        "email": "bunk@kernel.org",
        "time": "Mon Apr 28 02:12:11 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:18 2008 -0700"
      },
      "message": "make swap_pte_to_pagemap_entry() static\n\nMake the needlessly global swap_pte_to_pagemap_entry() static.\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\nAcked-by: Matt Mackall \u003cmpm@selenic.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "3c18ddd160d1fcd46d1131d9ad6c594dd8e9af99",
      "tree": "7307ba1ae4bdb99d1363eb59b1ebefcf5295c8ef",
      "parents": [
        "4d3d5b41a72b52555d43efbfc4ccde6ba6e5444f"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Mon Apr 28 02:12:10 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:18 2008 -0700"
      },
      "message": "mm: remove nopage\n\nNothing in the tree uses nopage any more.  Remove support for it in the\ncore mm code and documentation (and a few stray references to it in\ncomments).\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "4d3d5b41a72b52555d43efbfc4ccde6ba6e5444f",
      "tree": "5935f5d9e741f63c190c4edf4d5f6f6005e33d0f",
      "parents": [
        "0dd1334faf7e075bfdb6f5284eed65210b296fc1"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Mon Apr 28 02:12:10 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:18 2008 -0700"
      },
      "message": "mmap_region: cleanup the final vma_merge() related code\n\nIt is not easy to actually understand the \"if (!file || !vma_merge())\"\ncode, turn it into \"if (file \u0026\u0026 vma_merge())\".  This makes immediately\nobvious that the subsequent \"if (file)\" is superfluous.\n\nAs Hugh Dickins pointed out, we can also factor out the -\u003ei_writecount\ncorrections, and add a small comment about that.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "0dd1334faf7e075bfdb6f5284eed65210b296fc1",
      "tree": "d64b7b1d4035d8b524b01d5cd3800135edcacc25",
      "parents": [
        "ddc81ed2c5d47a078a3b02c5c3a4345bc2bc3c9b"
      ],
      "author": {
        "name": "Hisashi Hifumi",
        "email": "hifumi.hisashi@oss.ntt.co.jp",
        "time": "Mon Apr 28 02:12:08 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:18 2008 -0700"
      },
      "message": "fix invalidate_inode_pages2_range() to not clear ret\n\nDIO invalidates page cache through invalidate_inode_pages2_range().\ninvalidate_inode_pages2_range() sets ret\u003d-EIO when\ninvalidate_complete_page2() fails, but this ret is cleared if\ndo_launder_page() succeed on a page of next index.\n\nIn this case, dio is carried out even if invalidate_complete_page2() fails\non some pages.\n\nThis can cause inconsistency between memory and blocks on HDD because the\npage cache still exists.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Hisashi Hifumi \u003chifumi.hisashi@oss.ntt.co.jp\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Ken Chen \u003ckenchen@google.com\u003e\nCc: Zach Brown \u003czach.brown@oracle.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nCc: \"J. Bruce Fields\" \u003cbfields@fieldses.org\u003e\nCc: Chuck Lever \u003ccel@citi.umich.edu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ddc81ed2c5d47a078a3b02c5c3a4345bc2bc3c9b",
      "tree": "2bd3e56604350d05d5163e32dde7fbbe56d31586",
      "parents": [
        "488514d1798289f56f80ed018e246179fe500383"
      ],
      "author": {
        "name": "Harvey Harrison",
        "email": "harvey.harrison@gmail.com",
        "time": "Mon Apr 28 02:12:07 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:17 2008 -0700"
      },
      "message": "remove sparse warning for mmzone.h\n\ninclude/linux/mmzone.h:640:22: warning: potentially expensive pointer subtraction\n\nCalculate the offset into the node_zones array rather than the index\nusing casts to (char *) and comparing against the index * sizeof(struct zone).\n\nOn X86_32 this saves a sar, but code size increases by one byte per\nis_highmem() use due to 32-bit cmps rather than 16 bit cmps.\n\nBefore:\n 207:   2b 80 8c 07 00 00       sub    0x78c(%eax),%eax\n 20d:   c1 f8 0b                sar    $0xb,%eax\n 210:   83 f8 02                cmp    $0x2,%eax\n 213:   74 16                   je     22b \u003ckmap_atomic_prot+0x144\u003e\n 215:   83 f8 03                cmp    $0x3,%eax\n 218:   0f 85 8f 00 00 00       jne    2ad \u003ckmap_atomic_prot+0x1c6\u003e\n 21e:   83 3d 00 00 00 00 02    cmpl   $0x2,0x0\n 225:   0f 85 82 00 00 00       jne    2ad \u003ckmap_atomic_prot+0x1c6\u003e\n 22b:   64 a1 00 00 00 00       mov    %fs:0x0,%eax\n\nAfter:\n 207:   2b 80 8c 07 00 00       sub    0x78c(%eax),%eax\n 20d:   3d 00 10 00 00          cmp    $0x1000,%eax\n 212:   74 18                   je     22c \u003ckmap_atomic_prot+0x145\u003e\n 214:   3d 00 18 00 00          cmp    $0x1800,%eax\n 219:   0f 85 8f 00 00 00       jne    2ae \u003ckmap_atomic_prot+0x1c7\u003e\n 21f:   83 3d 00 00 00 00 02    cmpl   $0x2,0x0\n 226:   0f 85 82 00 00 00       jne    2ae \u003ckmap_atomic_prot+0x1c7\u003e\n 22c:   64 a1 00 00 00 00       mov    %fs:0x0,%eax\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Harvey Harrison \u003charvey.harrison@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "488514d1798289f56f80ed018e246179fe500383",
      "tree": "e68d9f703dcbceed0cc08b03014d109d7ec3acd4",
      "parents": [
        "e92adcba261fd391591bb63c1703185a04a41554"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 28 02:12:05 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:17 2008 -0700"
      },
      "message": "Remove set_migrateflags()\n\nMigrate flags must be set on slab creation as agreed upon when the antifrag\nlogic was reviewed.  Otherwise some slabs of a slabcache will end up in the\nunmovable and others in the reclaimable section depending on which flag was\nactive when a new slab page was allocated.\n\nThis likely slid in somehow when antifrag was merged. Remove it.\n\nThe buffer_heads are always allocated with __GFP_RECLAIMABLE because the\nSLAB_RECLAIM_ACCOUNT option is set.  The set_migrateflags() never had any\neffect there.\n\nRadix tree allocations are not directly reclaimable but they are allocated\nwith __GFP_RECLAIMABLE set on each allocation.  We now set\nSLAB_RECLAIM_ACCOUNT on radix tree slab creation making sure that radix\ntree slabs are consistently placed in the reclaimable section.  Radix tree\nslabs will also be accounted as such.\n\nThere is then no user left of set_migratepages. So remove it.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e92adcba261fd391591bb63c1703185a04a41554",
      "tree": "83cd94eaa57931da66137a65089a0bcdddf20533",
      "parents": [
        "180c06efce691f2b721dd0d965079827bdd7ee03"
      ],
      "author": {
        "name": "Jeff Moyer",
        "email": "jmoyer@redhat.com",
        "time": "Mon Apr 28 02:12:04 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:17 2008 -0700"
      },
      "message": "aio: io_getevents() should return if io_destroy() is invoked\n\nThis patch wakes up a thread waiting in io_getevents if another thread\ndestroys the context.  This was tested using a small program that spawns a\nthread to wait in io_getevents while the parent thread destroys the io context\nand then waits for the getevents thread to exit.  Without this patch, the\nprogram hangs indefinitely.  With the patch, the program exits as expected.\n\nSigned-off-by: Jeff Moyer \u003cjmoyer@redhat.com\u003e\nCc: Zach Brown \u003czach.brown@oracle.com\u003e\nCc: Christopher Smith \u003cx@xman.org\u003e\nCc: Benjamin LaHaise \u003cbcrl@kvack.org\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "180c06efce691f2b721dd0d965079827bdd7ee03",
      "tree": "6d5dbde8f341544bbd212e9d376af1e7880a4229",
      "parents": [
        "ea01ea937dcae2caa146dea1918cccf2f16ed3c4"
      ],
      "author": {
        "name": "Jeremy Fitzhardinge",
        "email": "jeremy@goop.org",
        "time": "Mon Apr 28 02:12:03 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:17 2008 -0700"
      },
      "message": "hotplug-memory: make online_page() common\n\nAll architectures use an effectively identical definition of online_page(), so\njust make it common code.  x86-64, ia64, powerpc and sh are actually\nidentical; x86-32 is slightly different.\n\nx86-32\u0027s differences arise because it puts its hotplug pages in the highmem\nzone.  We can handle this in the generic code by inspecting the page to see if\nits in highmem, and update the totalhigh_pages count appropriately.  This\nleaves init_32.c:free_new_highpage with a single caller, so I folded it into\nadd_one_highpage_init.\n\nI also removed an incorrect comment referring to the NUMA case; any NUMA\ndetails have already been dealt with by the time online_page() is called.\n\n[akpm@linux-foundation.org: fix indenting]\nSigned-off-by: Jeremy Fitzhardinge \u003cjeremy.fitzhardinge@citrix.com\u003e\nAcked-by: Dave Hansen \u003cdave@linux.vnet.ibm.com\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamez.hiroyu@jp.fujitsu.com\u003e\nTested-by: KAMEZAWA Hiroyuki \u003ckamez.hiroyu@jp.fujitsu.com\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ea01ea937dcae2caa146dea1918cccf2f16ed3c4",
      "tree": "aa3189d587dc04f75bd6a0d79d7f5a764200cd81",
      "parents": [
        "2a4e2b8780c6df42b19c053243dada7fa4d311ee"
      ],
      "author": {
        "name": "Badari Pulavarty",
        "email": "pbadari@us.ibm.com",
        "time": "Mon Apr 28 02:12:01 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:17 2008 -0700"
      },
      "message": "hotplug memory remove: generic __remove_pages() support\n\nGeneric helper function to remove section mappings and sysfs entries for the\nsection of the memory we are removing.  offline_pages() correctly adjusted\nzone and marked the pages reserved.\n\nTODO: Yasunori Goto is working on patches to free up allocations from bootmem.\n\nSigned-off-by: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nAcked-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "2a4e2b8780c6df42b19c053243dada7fa4d311ee",
      "tree": "4970af3a9ee9c2a8b3e4861ac552cb9262acbaa0",
      "parents": [
        "dca03a51549bc645685fb8a77efa64df531666c3"
      ],
      "author": {
        "name": "Harvey Harrison",
        "email": "harvey.harrison@gmail.com",
        "time": "Mon Apr 28 02:12:00 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:17 2008 -0700"
      },
      "message": "rtc: replace remaining __FUNCTION__ occurrences\n\n__FUNCTION__ is gcc-specific, use __func__\n\nSigned-off-by: Harvey Harrison \u003charvey.harrison@gmail.com\u003e\nCc: David Brownell \u003cdavid-b@pacbell.net\u003e\nCc: Alessandro Zummo \u003ca.zummo@towertech.it\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "dca03a51549bc645685fb8a77efa64df531666c3",
      "tree": "558985a9c87d132de23719b6dfe49e2379a6e8e1",
      "parents": [
        "c116bc2ae516e9949d645bc75b1ee294ff15db23"
      ],
      "author": {
        "name": "Julia Lawall",
        "email": "julia@diku.dk",
        "time": "Mon Apr 28 02:11:59 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:17 2008 -0700"
      },
      "message": "drivers/char/rtc.c: use time_before, time_before_eq, etc\n\nThe functions time_before, time_before_eq, time_after, and time_after_eq\nare more robust for comparing jiffies against other values.\n\nA simplified version of the semantic patch making this change is as follows:\n(http://www.emn.fr/x-info/coccinelle/)\n\n// \u003csmpl\u003e\n@ change_compare_np @\nexpression E;\n@@\n\n(\n- jiffies \u003c\u003d E\n+ time_before_eq(jiffies,E)\n|\n- jiffies \u003e\u003d E\n+ time_after_eq(jiffies,E)\n|\n- jiffies \u003c E\n+ time_before(jiffies,E)\n|\n- jiffies \u003e E\n+ time_after(jiffies,E)\n)\n\n@ include depends on change_compare_np @\n@@\n\n#include \u003clinux/jiffies.h\u003e\n\n@ no_include depends on !include \u0026\u0026 change_compare_np @\n@@\n\n  #include \u003clinux/...\u003e\n+ #include \u003clinux/jiffies.h\u003e\n// \u003c/smpl\u003e\n\nSigned-off-by: Julia Lawall \u003cjulia@diku.dk\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Alessandro Zummo \u003ca.zummo@towertech.it\u003e\nCc: David Brownell \u003cdavid-b@pacbell.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "c116bc2ae516e9949d645bc75b1ee294ff15db23",
      "tree": "9296da3e37dfc8f80566624faf781f19d41ea9f1",
      "parents": [
        "e2bfe3424b368e977002fc58f81536d5d8ea9449"
      ],
      "author": {
        "name": "Zhao Yakui",
        "email": "yakui.zhao@intel.com",
        "time": "Mon Apr 28 02:11:58 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:17 2008 -0700"
      },
      "message": "rtc: add the support for alarm time relative to current time in sysfs\n\nIn current kernel if we want to set the alarm time, the absolute time the\nseconds relative to 1970-01-01 00:00:00) should be written into\n/sys/class/rtc/rtc0/wakealarm.  It is not convenient.\n\nIt is more reasonable to add the support for the alarm time relative to\ncurrent RTC time.(the unit is second)\n\nFor example:\nIf the RTC is required to generate alarm after 2 minutes, the following\nwill be OK.\n\techo +120 \u003e /sys/class/rtc/rtc0/wakealarm\nor      echo +0x78 \u003e /sys/class/rtc/rtc0/wakealarm\n\nSigned-off-by: Zhao Yakui \u003cyakui.zhao@intel.com\u003e\nSigned-off-by: Zhang Rui \u003crui.zhang@intel.com\u003e\nSigned-off-by: David Brownell \u003cdbrownell@users.sourceforge.net\u003e\nCc: Alessandro Zummo \u003ca.zummo@towertech.it\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e2bfe3424b368e977002fc58f81536d5d8ea9449",
      "tree": "6bdc0c1dbf189ce7b8c4f7e74db2ef40cbf97ec9",
      "parents": [
        "e275ac477161a3df5c27e40c55f7af94cfb396cf"
      ],
      "author": {
        "name": "Paul Mundt",
        "email": "lethal@linux-sh.org",
        "time": "Mon Apr 28 02:11:57 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:17 2008 -0700"
      },
      "message": "rtc: rtc-rs5c372: fix up NULL name in transfer error path\n\nrs5c_get_regs() currently uses rs5c-\u003ertc-\u003ename for its debug printk when\ni2c_transfer() fails, though it is used several times before the rtc dev\nhas been registered. The earliest we can get at the symbolic name is via\nthe i2c client\u0027s struct device, which can be handled by moving the first\nrs5c_get_regs() until after the client pointer is assigned.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: David Brownell \u003cdavid-b@pacbell.net\u003e\nCc: Alessandro Zummo \u003ca.zummo@towertech.it\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e275ac477161a3df5c27e40c55f7af94cfb396cf",
      "tree": "9a1f15b699c1ccf892fdddfb29e8268e41ff224f",
      "parents": [
        "a3ed107e63b7cd4d1ba1567a69a1feec5f0eabc1"
      ],
      "author": {
        "name": "David Brownell",
        "email": "david-b@pacbell.net",
        "time": "Mon Apr 28 02:11:56 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:17 2008 -0700"
      },
      "message": "kerneldoc for \u003clinux/clk.h\u003e\n\nAdd \u003clinux/clk.h\u003e to the generated kerneldoc, with some overview\nto go along with those per-function descriptions.\n\nSigned-off-by: David Brownell \u003cdbrownell@users.sourceforge.net\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nCc: Alessandro Zummo \u003ca.zummo@towertech.it\u003e\nCc: \"Randy.Dunlap\" \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "a3ed107e63b7cd4d1ba1567a69a1feec5f0eabc1",
      "tree": "af8b2801234d1218397801348b2917ceb5f37983",
      "parents": [
        "c464652813fe128c346ce6e7ec8fb0d2b67de6fb"
      ],
      "author": {
        "name": "Adrian Bunk",
        "email": "bunk@kernel.org",
        "time": "Mon Apr 28 02:11:55 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:16 2008 -0700"
      },
      "message": "make ds1511_rtc_{read,set}_time() static\n\nMake the needlessly global ds1511_rtc_{read,set}_time() static.\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\nCc: David Brownell \u003cdavid-b@pacbell.net\u003e\nCc: Alessandro Zummo \u003ca.zummo@towertech.it\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    }
  ],
  "next": "c464652813fe128c346ce6e7ec8fb0d2b67de6fb"
}