)]}'
{
  "log": [
    {
      "commit": "b8c1c5da1520977cb55a358f20fc09567d40cad9",
      "tree": "c762e6ad77297beed0978337ce2f5b0c50add739",
      "parents": [
        "01e457cfcd5b6b6f18d0bb8cec0c5d43df56557e"
      ],
      "author": {
        "name": "Andrew Morton",
        "email": "akpm@linux-foundation.org",
        "time": "Tue Jul 24 12:02:40 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 24 12:24:59 2007 -0700"
      },
      "message": "slab: correctly handle __GFP_ZERO\n\nUse the correct local variable when calling into the page allocator.  Local\n`flags\u0027 can have __GFP_ZERO set, which causes us to pass __GFP_ZERO into the\npage allocator, possibly from illegal contexts.  The page allocator will later\ndo prep_zero_page()-\u003ekmap_atomic(..., KM_USER0) from irq contexts and will\nthen go BUG.\n\nCc: Mike Galbraith \u003cefault@gmx.de\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": "5ab3ee7b1cd5c91eb2272764f9d7d1fe4749681e",
      "tree": "82c1fbc5e3a41651d4c0d45cf13d85760708c184",
      "parents": [
        "be1ff386e768ee4fc19bb7da48cee4fc4cb4e75b"
      ],
      "author": {
        "name": "Ken Chen",
        "email": "kenchen@google.com",
        "time": "Mon Jul 23 18:44:00 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 24 12:24:59 2007 -0700"
      },
      "message": "fix hugetlb page allocation leak\n\ndequeue_huge_page() has a serious memory leak upon hugetlb page\nallocation.  The for loop continues on allocating hugetlb pages out of\nall allowable zone, where this function is supposedly only dequeue one\nand only one pages.\n\nFixed it by breaking out of the for loop once a hugetlb page is found.\n\nSigned-off-by: Ken Chen \u003ckenchen@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": "dec2e6b7aa5d45bc3508e19907a7716b0c5307e5",
      "tree": "6214a1061268c805aded57413e98544456f175ab",
      "parents": [
        "7aa6ec56b9e9e95eb6c83516ddbb6159fd11c224"
      ],
      "author": {
        "name": "Sam Ravnborg",
        "email": "sam@ravnborg.org",
        "time": "Sun Jul 22 11:12:44 2007 +0200"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Sun Jul 22 11:03:38 2007 -0700"
      },
      "message": "x86_64: fix section mismatch warning in init.c\n\nFix following warning:\nWARNING: vmlinux.o(.text+0x188ea): Section mismatch: reference to .init.text:__alloc_bootmem_core (between \u0027alloc_bootmem_high_node\u0027 and \u0027get_gate_vma\u0027)\n\nalloc_bootmem_high_node() is only used from __init scope so declare it __init.\nAnd in addition declare the weak variant __init too.\n\nSigned-off-by: Sam Ravnborg \u003csam@ravnborg.org\u003e\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "d6269543ef24aa012aa228c27af3adb074f7b36b",
      "tree": "5e0c24ce1dd5ed3947ea00b7863782e24848b8d3",
      "parents": [
        "41f9dc5c871600f53c8912b2975971d2a11c1c25"
      ],
      "author": {
        "name": "Matt Mackall",
        "email": "mpm@selenic.com",
        "time": "Sat Jul 21 04:37:40 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Sat Jul 21 17:49:16 2007 -0700"
      },
      "message": "slob: reduce list scanning\n\nThe version of SLOB in -mm always scans its free list from the beginning,\nwhich results in small allocations and free segments clustering at the\nbeginning of the list over time.  This causes the average search to scan\nover a large stretch at the beginning on each allocation.\n\nBy starting each page search where the last one left off, we evenly\ndistribute the allocations and greatly shorten the average search.\n\nWithout this patch, kernel compiles on a 1.5G machine take a large amount\nof system time for list scanning.  With this patch, compiles are within a\nfew seconds of performance of a SLAB kernel with no notable change in\nsystem time.\n\nSigned-off-by: Matt Mackall \u003cmpm@selenic.com\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": "41f9dc5c871600f53c8912b2975971d2a11c1c25",
      "tree": "c87833f1e6ffd73bc99ad7c83fffbd3cd47a64ca",
      "parents": [
        "61d488da9bad8d1511d18291006bd2dd728f173d"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Sat Jul 21 04:37:40 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Sat Jul 21 17:49:16 2007 -0700"
      },
      "message": "remove handle_mm_fault export\n\nNow that arch/powerpc/platforms/cell/spufs/fault.c is always built in\nthe kernel there is no need to export handle_mm_fault anymore.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\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": "b50731732f926d6c49fd0724616a7344c31cd5cf",
      "tree": "2bc72fc6bf200b3696666ff1ef21f7e60a379d35",
      "parents": [
        "df336d1c7b6fd510fa6d3a028f999e7586c7026e"
      ],
      "author": {
        "name": "Paul Mundt",
        "email": "lethal@linux-sh.org",
        "time": "Sat Jul 21 04:37:25 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Sat Jul 21 17:49:14 2007 -0700"
      },
      "message": "nommu: vmalloc_32_user()/vm_insert_page() and symbol exports.\n\nTrying to survive an allmodconfig on a nommu platform results in many\nscreen lengths of module unhappiness.  Many of the mmap related things that\nbinfmt_flat hooks in to are never exported despite being global, and there\nare also missing definitions for vmalloc_32_user() and vm_insert_page().\n\nI\u0027ve implemented vmalloc_32_user() trying to stick as close to the\nmm/vmalloc.c implementation as possible, though we don\u0027t have any need for\nVM_USERMAP, so groveling for the VMA can be skipped.  vm_insert_page() has\nbeen stubbed for now in order to keep the build happy.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: 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": "e228929bc257b963523ed75aa60d2ad77ece2189",
      "tree": "d72cf8e6d8a126792565549527efc2c9a6fcdcbe",
      "parents": [
        "8d1b87530e7df5c9541a69910ef7f786f034eca0"
      ],
      "author": {
        "name": "Paul Mundt",
        "email": "lethal@linux-sh.org",
        "time": "Fri Jul 20 00:31:44 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Fri Jul 20 08:44:19 2007 -0700"
      },
      "message": "mm: fix memory hotplug oops from ZONE_MOVABLE changes.\n\nzone_movable_pfn is presently marked as __initdata and referenced from\nadjust_zone_range_for_zone_movable(), which in turn is referenced by\nzone_spanned_pages_in_node().  Both of these are __meminit annotated.  When\nmemory hotplug is enabled, this will oops on a hot-add, due to\nzone_movable_pfn having been freed.\n\n__meminitdata annotation gives the desired behaviour.\n\nThis will only impact platforms that enable both memory hotplug\nand ARCH_POPULATES_NODE_MAP.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: 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": "20c2df83d25c6a95affe6157a4c9cac4cf5ffaac",
      "tree": "415c4453d2b17a50abe7a3e515177e1fa337bd67",
      "parents": [
        "64fb98fc40738ae1a98bcea9ca3145b89fb71524"
      ],
      "author": {
        "name": "Paul Mundt",
        "email": "lethal@linux-sh.org",
        "time": "Fri Jul 20 10:11:58 2007 +0900"
      },
      "committer": {
        "name": "Paul Mundt",
        "email": "lethal@linux-sh.org",
        "time": "Fri Jul 20 10:11:58 2007 +0900"
      },
      "message": "mm: Remove slab destructors from kmem_cache_create().\n\nSlab destructors were no longer supported after Christoph\u0027s\nc59def9f222d44bb7e2f0a559f2906191a0862d7 change. They\u0027ve been\nBUGs for both slab and slub, and slob never supported them\neither.\n\nThis rips out support for the dtor pointer from kmem_cache_create()\ncompletely and fixes up every single callsite in the kernel (there were\nabout 224, not including the slab allocator definitions themselves,\nor the documentation references).\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\n"
    },
    {
      "commit": "9550b105b8646f916862aee3ab7b25020ca14159",
      "tree": "d5e57db2bfd773611e2b77b4bbe6d89ba8449b45",
      "parents": [
        "a5c96d8a1c67f31ef48935a78da2d2076513842b"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 13:21:34 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 13:21:34 2007 -0700"
      },
      "message": "slub: fix ksize() for zero-sized pointers\n\nThe slab and slob allocators already did this right, but slub would call\n\"get_object_page()\" on the magic ZERO_SIZE_PTR, with all kinds of nasty\nend results.\n\nNoted by Ingo Molnar.\n\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "a5c96d8a1c67f31ef48935a78da2d2076513842b",
      "tree": "d164c6b33a1de9ea157b99bb353f84e41774164e",
      "parents": [
        "ce8c2293be47999584908069e78bf6d94beadc53"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 13:17:15 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 13:17:15 2007 -0700"
      },
      "message": "Fix up non-NUMA SLAB configuration for zero-sized allocations\n\nI suspect Christoph tested his code only in the NUMA configuration, for\nthe combination of SLAB+non-NUMA the zero-sized kmalloc\u0027s would not work.\n\nOf course, this would only trigger in configurations where those zero-\nsized allocations happen (not very common), so that may explain why it\nwasn\u0027t more widely noticed.\n\nSeen by by Andi Kleen under qemu, and there seems to be a report by\nMichael Tsirkin on it too.\n\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Roland Dreier \u003crdreier@cisco.com\u003e\nCc: Michael S. Tsirkin \u003cmst@dev.mellanox.co.il\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "5992b6dac0d23a2b51a1ccbaf8f1a2e62097b12b",
      "tree": "47b059a9f22d6d0111c669d808617aa73a709259",
      "parents": [
        "57deb52622f3700d154e32662f36cd5f4053f6ed"
      ],
      "author": {
        "name": "Rusty Russell",
        "email": "rusty@rustcorp.com.au",
        "time": "Thu Jul 19 01:49:21 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:52 2007 -0700"
      },
      "message": "lguest: export symbols for lguest as a module\n\nlguest does some fairly lowlevel things to support a host, which\nnormal modules don\u0027t need:\n\nmath_state_restore:\n\tWhen the guest triggers a Device Not Available fault, we need\n\tto be able to restore the FPU\n\n__put_task_struct:\n\tWe need to hold a reference to another task for inter-guest\n\tI/O, and put_task_struct() is an inline function which calls\n\t__put_task_struct.\n\naccess_process_vm:\n\tWe need to access another task for inter-guest I/O.\n\nmap_vm_area \u0026 __get_vm_area:\n\tWe need to map the switcher shim (ie. monitor) at 0xFFC01000.\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.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": "d688abf50bd5a30d2c44dea2a72dd59052cd3cce",
      "tree": "2f572d18af05969b2c882970cda4860be345bdfc",
      "parents": [
        "6819457d2cb7fe4fdb0fc3655b6b6dc71a86bee9"
      ],
      "author": {
        "name": "Andrew Morton",
        "email": "akpm@osdl.org",
        "time": "Thu Jul 19 01:49:17 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:52 2007 -0700"
      },
      "message": "move page writeback acounting out of macros\n\npage-writeback accounting is presently performed in the page-flags macros.\nThis is inconsistent and a bit ugly and makes it awkward to implement\nper-backing_dev under-writeback page accounting.\n\nSo move this accounting down to the callsite(s).\n\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "f8af0bb890d6cdcb09ec042c128e217a7c500355",
      "tree": "c74f53e64b74162488b7ca3f5199acf7f5b6e501",
      "parents": [
        "7ed5cb2b73d0c4165c0504c95454fade0c0bf3d9"
      ],
      "author": {
        "name": "Akinobu Mita",
        "email": "akinobu.mita@gmail.com",
        "time": "Thu Jul 19 01:49:12 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:50 2007 -0700"
      },
      "message": "hugetlb: use set_compound_page_dtor\n\nUse appropriate accessor function to set compound page destructor\nfunction.\n\nCc:  William Irwin \u003cwli@holomorphy.com\u003e\nSigned-off-by: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nAcked-by: Adam Litke \u003cagl@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": "7ed5cb2b73d0c4165c0504c95454fade0c0bf3d9",
      "tree": "37b15b57986466531c5a0debb6b52660ca47e86a",
      "parents": [
        "e3aded3cc289113c7bc729ef4cb75e56d9aa71be"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hugh@veritas.com",
        "time": "Thu Jul 19 01:49:11 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:50 2007 -0700"
      },
      "message": "Remove nid_lock from alloc_fresh_huge_page\n\nThe fix to that race in alloc_fresh_huge_page() which could give an illegal\nnode ID did not need nid_lock at all: the fix was to replace static int nid\nby static int prev_nid and do the work on local int nid.  nid_lock did make\nsure that racers strictly roundrobin the nodes, but that\u0027s not something we\nneed to enforce strictly.  Kill nid_lock.\n\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": "7ac674f52778b95450509357435320be1d795248",
      "tree": "93657e44d8d7ba7f8857ba038074e2ec4a9c2d38",
      "parents": [
        "ea02e3dde3509ffa7fda7f8de9c8a366e03f7bbd"
      ],
      "author": {
        "name": "Benjamin Herrenschmidt",
        "email": "benh@kernel.crashing.org",
        "time": "Thu Jul 19 01:49:10 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:50 2007 -0700"
      },
      "message": "vmalloc_32 should use GFP_KERNEL\n\nI\u0027ve noticed lots of failures of vmalloc_32 on machines where it\nshouldn\u0027t have failed unless it was doing an atomic operation.\n\nLooking closely, I noticed that:\n\n#if defined(CONFIG_64BIT) \u0026\u0026 defined(CONFIG_ZONE_DMA32)\n#define GFP_VMALLOC32 GFP_DMA32\n#elif defined(CONFIG_64BIT) \u0026\u0026 defined(CONFIG_ZONE_DMA)\n#define GFP_VMALLOC32 GFP_DMA\n#else\n#define GFP_VMALLOC32 GFP_KERNEL\n#endif\n\nWhich seems to be incorrect, it should always -or- in the DMA flags\non top of GFP_KERNEL, thus this patch.\n\nThis fixes frequent errors launchin X with the nouveau DRM for example.\n\nSigned-off-by: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Dave Airlie \u003cairlied@linux.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ea02e3dde3509ffa7fda7f8de9c8a366e03f7bbd",
      "tree": "0c48aa948de8549a2b183c2ed3e5b338fa9730b7",
      "parents": [
        "3abf7afd406866a84276d3ed04f4edf6070c9cb5"
      ],
      "author": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Thu Jul 19 01:49:09 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:50 2007 -0700"
      },
      "message": "FRV: work around a possible compiler bug\n\nWork around a possible bug in the FRV compiler.\n\nWhat appears to be happening is that gcc resolves the\n__builtin_constant_p() in kmalloc() to true, but then fails to reduce the\ntherefore constant conditions in the if-statements it guards to constant\nresults.\n\nWhen compiling with -O2 or -Os, one single spurious error crops up in\ncpuup_callback() in mm/slab.c.  This can be avoided by making the memsize\nvariable const.\n\nSigned-off-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": "3abf7afd406866a84276d3ed04f4edf6070c9cb5",
      "tree": "4ee66f7d1a12261cbc7139b99b4fa94a8ecab122",
      "parents": [
        "dd00cc486ab1c17049a535413d1751ef3482141c"
      ],
      "author": {
        "name": "Andrew Morton",
        "email": "akpm@linux-foundation.org",
        "time": "Thu Jul 19 01:49:08 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:50 2007 -0700"
      },
      "message": "dequeue_huge_page() warning fix\n\nmm/hugetlb.c: In function `dequeue_huge_page\u0027:\nmm/hugetlb.c:72: warning: \u0027nid\u0027 might be used uninitialized in this function\n\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Adam Litke \u003cagl@us.ibm.com\u003e\nCc: David Gibson \u003chermes@gibson.dropbear.id.au\u003e\nCc: William Lee Irwin III \u003cwli@holomorphy.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "b6a2fea39318e43fee84fa7b0b90d68bed92d2ba",
      "tree": "c9c3619cb2730b5c10c7427b837146bce3d69156",
      "parents": [
        "bdf4c48af20a3b0f01671799ace345e3d49576da"
      ],
      "author": {
        "name": "Ollie Wild",
        "email": "aaw@google.com",
        "time": "Thu Jul 19 01:48:16 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:45 2007 -0700"
      },
      "message": "mm: variable length argument support\n\nRemove the arg+env limit of MAX_ARG_PAGES by copying the strings directly from\nthe old mm into the new mm.\n\nWe create the new mm before the binfmt code runs, and place the new stack at\nthe very top of the address space.  Once the binfmt code runs and figures out\nwhere the stack should be, we move it downwards.\n\nIt is a bit peculiar in that we have one task with two mm\u0027s, one of which is\ninactive.\n\n[a.p.zijlstra@chello.nl: limit stack size]\nSigned-off-by: Ollie Wild \u003caaw@google.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\n[bunk@stusta.de: unexport bprm_mm_init]\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "f9acc8c7b35a100f3a9e0e6977f7807b0169f9a5",
      "tree": "6a4dcd227bb698a217a1d42d37e3f0135a444ea4",
      "parents": [
        "cf914a7d656e62b9dd3e0dffe4f62b953ae6048d"
      ],
      "author": {
        "name": "Fengguang Wu",
        "email": "wfg@mail.ustc.edu.cn",
        "time": "Thu Jul 19 01:48:08 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:44 2007 -0700"
      },
      "message": "readahead: sanify file_ra_state names\n\nRename some file_ra_state variables and remove some accessors.\n\nIt results in much simpler code.\nKudos to Rusty!\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Rusty Russell \u003crusty@rustcorp.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": "cf914a7d656e62b9dd3e0dffe4f62b953ae6048d",
      "tree": "baf7e79de006ca80eac426d2d1be4c52f5f19624",
      "parents": [
        "fe3cba17c49471e99d3421e675fc8b3deaaf0b70"
      ],
      "author": {
        "name": "Rusty Russell",
        "email": "rusty@rustcorp.com.au",
        "time": "Thu Jul 19 01:48:08 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:44 2007 -0700"
      },
      "message": "readahead: split ondemand readahead interface into two functions\n\nSplit ondemand readahead interface into two functions.  I think this makes it\na little clearer for non-readahead experts (like Rusty).\n\nInternally they both call ondemand_readahead(), but the page argument is\nchanged to an obvious boolean flag.\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "fe3cba17c49471e99d3421e675fc8b3deaaf0b70",
      "tree": "df696c4584c6db2e439f068d2474fcb946ca587d",
      "parents": [
        "d8983910a4045fa21022cfccf76ed13eb40fd7f5"
      ],
      "author": {
        "name": "Fengguang Wu",
        "email": "wfg@mail.ustc.edu.cn",
        "time": "Thu Jul 19 01:48:07 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:44 2007 -0700"
      },
      "message": "mm: share PG_readahead and PG_reclaim\n\nShare the same page flag bit for PG_readahead and PG_reclaim.\n\nOne is used only on file reads, another is only for emergency writes.  One\nis used mostly for fresh/young pages, another is for old pages.\n\nCombinations of possible interactions are:\n\na) clear PG_reclaim \u003d\u003e implicit clear of PG_readahead\n\tit will delay an asynchronous readahead into a synchronous one\n\tit actually does _good_ for readahead:\n\t\tthe pages will be reclaimed soon, it\u0027s readahead thrashing!\n\t\tin this case, synchronous readahead makes more sense.\n\nb) clear PG_readahead \u003d\u003e implicit clear of PG_reclaim\n\tone(and only one) page will not be reclaimed in time\n\tit can be avoided by checking PageWriteback(page) in readahead first\n\nc) set PG_reclaim \u003d\u003e implicit set of PG_readahead\n\twill confuse readahead and make it restart the size rampup process\n\tit\u0027s a trivial problem, and can mostly be avoided by checking\n\tPageWriteback(page) first in readahead\n\nd) set PG_readahead \u003d\u003e implicit set of PG_reclaim\n\tPG_readahead will never be set on already cached pages.\n\tPG_reclaim will always be cleared on dirtying a page.\n\tso not a problem.\n\nIn summary,\n\ta)   we get better behavior\n\tb,d) possible interactions can be avoided\n\tc)   racy condition exists that might affect readahead, but the chance\n\t     is _really_ low, and the hurt on readahead is trivial.\n\nCompound pages also use PG_reclaim, but for now they do not interact with\nreclaim/readahead code.\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Rusty Russell \u003crusty@rustcorp.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": "c743d96b6d2ff55a94df7b5ac7c74987bb9c343b",
      "tree": "391e5dad21e62590e343c63e5ba05322d0fc76ad",
      "parents": [
        "dc7868fcb9a73990e6f30371c1be465c436a7a7f"
      ],
      "author": {
        "name": "Fengguang Wu",
        "email": "wfg@mail.ustc.edu.cn",
        "time": "Thu Jul 19 01:48:04 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:44 2007 -0700"
      },
      "message": "readahead: remove the old algorithm\n\nRemove the old readahead algorithm.\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Steven Pratt \u003cslpratt@austin.ibm.com\u003e\nCc: Ram Pai \u003clinuxram@us.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.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": "3ea89ee86a82e9fbde37018d9b9e92a552e5fd13",
      "tree": "5fef7216ef39d66684754e4aadf368ce9adfd72e",
      "parents": [
        "122a21d11cbfda6d1e33cbc8ae9e4c4ee2f1886e"
      ],
      "author": {
        "name": "Fengguang Wu",
        "email": "wfg@mail.ustc.edu.cn",
        "time": "Thu Jul 19 01:48:02 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:44 2007 -0700"
      },
      "message": "readahead: convert filemap invocations\n\nConvert filemap reads to use on-demand readahead.\n\nThe new call scheme is to\n- call readahead on non-cached page\n- call readahead on look-ahead page\n- update prev_index when finished with the read request\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Steven Pratt \u003cslpratt@austin.ibm.com\u003e\nCc: Ram Pai \u003clinuxram@us.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.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": "122a21d11cbfda6d1e33cbc8ae9e4c4ee2f1886e",
      "tree": "e13f4e2dd0f838f5f922ed047e5ee56bf3546f21",
      "parents": [
        "5ce1110b92b31d079aa443e967f43a2294e01194"
      ],
      "author": {
        "name": "Fengguang Wu",
        "email": "wfg@mail.ustc.edu.cn",
        "time": "Thu Jul 19 01:48:01 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:44 2007 -0700"
      },
      "message": "readahead: on-demand readahead logic\n\nThis is a minimal readahead algorithm that aims to replace the current one.\nIt is more flexible and reliable, while maintaining almost the same behavior\nand performance.  Also it is full integrated with adaptive readahead.\n\nIt is designed to be called on demand:\n\t- on a missing page, to do synchronous readahead\n\t- on a lookahead page, to do asynchronous readahead\n\nIn this way it eliminated the awkward workarounds for cache hit/miss,\nreadahead thrashing, retried read, and unaligned read.  It also adopts the\ndata structure introduced by adaptive readahead, parameterizes readahead\npipelining with `lookahead_index\u0027, and reduces the current/ahead windows to\none single window.\n\nHEURISTICS\n\nThe logic deals with four cases:\n\n\t- sequential-next\n\t\tfound a consistent readahead window, so push it forward\n\n\t- random\n\t\tstandalone small read, so read as is\n\n\t- sequential-first\n\t\tcreate a new readahead window for a sequential/oversize request\n\n\t- lookahead-clueless\n\t\thit a lookahead page not associated with the readahead window,\n\t\tso create a new readahead window and ramp it up\n\nIn each case, three parameters are determined:\n\n\t- readahead index: where the next readahead begins\n\t- readahead size:  how much to readahead\n\t- lookahead size:  when to do the next readahead (for pipelining)\n\nBEHAVIORS\n\nThe old behaviors are maximally preserved for trivial sequential/random reads.\nNotable changes are:\n\n\t- It no longer imposes strict sequential checks.\n\t  It might help some interleaved cases, and clustered random reads.\n\t  It does introduce risks of a random lookahead hit triggering an\n\t  unexpected readahead. But in general it is more likely to do good\n\t  than to do evil.\n\n\t- Interleaved reads are supported in a minimal way.\n\t  Their chances of being detected and proper handled are still low.\n\n\t- Readahead thrashings are better handled.\n\t  The current readahead leads to tiny average I/O sizes, because it\n\t  never turn back for the thrashed pages.  They have to be fault in\n\t  by do_generic_mapping_read() one by one.  Whereas the on-demand\n\t  readahead will redo readahead for them.\n\nOVERHEADS\n\nThe new code reduced the overheads of\n\n\t- excessively calling the readahead routine on small sized reads\n\t  (the current readahead code insists on seeing all requests)\n\n\t- doing a lot of pointless page-cache lookups for small cached files\n\t  (the current readahead only turns itself off after 256 cache hits,\n\t  unfortunately most files are \u003c 1MB, so never see that chance)\n\nThat accounts for speedup of\n\t- 0.3% on 1-page sequential reads on sparse file\n\t- 1.2% on 1-page cache hot sequential reads\n\t- 3.2% on 256-page cache hot sequential reads\n\t- 1.3% on cache hot `tar /lib`\n\nHowever, it does introduce one extra page-cache lookup per cache miss, which\nimpacts random reads slightly. That\u0027s 1% overheads for 1-page random reads on\nsparse file.\n\nPERFORMANCE\n\nThe basic benchmark setup is\n\t- 2.6.20 kernel with on-demand readahead\n\t- 1MB max readahead size\n\t- 2.9GHz Intel Core 2 CPU\n\t- 2GB memory\n\t- 160G/8M Hitachi SATA II 7200 RPM disk\n\nThe benchmarks show that\n\t- it maintains the same performance for trivial sequential/random reads\n\t- sysbench/OLTP performance on MySQL gains up to 8%\n\t- performance on readahead thrashing gains up to 3 times\n\niozone throughput (KB/s): roughly the same\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\niozone -c -t1 -s 4096m -r 64k\n\n\t\t\t       2.6.20          on-demand      gain\nfirst run\n\t  \"  Initial write \"   61437.27        64521.53      +5.0%\n\t  \"        Rewrite \"   47893.02        48335.20      +0.9%\n\t  \"           Read \"   62111.84        62141.49      +0.0%\n\t  \"        Re-read \"   62242.66        62193.17      -0.1%\n\t  \"   Reverse Read \"   50031.46        49989.79      -0.1%\n\t  \"    Stride read \"    8657.61         8652.81      -0.1%\n\t  \"    Random read \"   13914.28        13898.23      -0.1%\n\t  \" Mixed workload \"   19069.27        19033.32      -0.2%\n\t  \"   Random write \"   14849.80        14104.38      -5.0%\n\t  \"         Pwrite \"   62955.30        65701.57      +4.4%\n\t  \"          Pread \"   62209.99        62256.26      +0.1%\n\nsecond run\n\t  \"  Initial write \"   60810.31        66258.69      +9.0%\n\t  \"        Rewrite \"   49373.89        57833.66     +17.1%\n\t  \"           Read \"   62059.39        62251.28      +0.3%\n\t  \"        Re-read \"   62264.32        62256.82      -0.0%\n\t  \"   Reverse Read \"   49970.96        50565.72      +1.2%\n\t  \"    Stride read \"    8654.81         8638.45      -0.2%\n\t  \"    Random read \"   13901.44        13949.91      +0.3%\n\t  \" Mixed workload \"   19041.32        19092.04      +0.3%\n\t  \"   Random write \"   14019.99        14161.72      +1.0%\n\t  \"         Pwrite \"   64121.67        68224.17      +6.4%\n\t  \"          Pread \"   62225.08        62274.28      +0.1%\n\nIn summary, writes are unstable, reads are pretty close on average:\n\n\t\t\t  access pattern  2.6.20  on-demand   gain\n\t\t\t\t   Read  62085.61  62196.38  +0.2%\n\t\t\t\tRe-read  62253.49  62224.99  -0.0%\n\t\t\t   Reverse Read  50001.21  50277.75  +0.6%\n\t\t\t    Stride read   8656.21   8645.63  -0.1%\n\t\t\t    Random read  13907.86  13924.07  +0.1%\n\t \t\t Mixed workload  19055.29  19062.68  +0.0%\n\t\t\t\t  Pread  62217.53  62265.27  +0.1%\n\naio-stress: roughly the same\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\naio-stress -l -s4096 -r128 -t1 -o1 knoppix511-dvd-cn.iso\naio-stress -l -s4096 -r128 -t1 -o3 knoppix511-dvd-cn.iso\n\n\t\t\t\t\t2.6.20      on-demand  delta\n\t\t\tsequential\t 92.57s      92.54s    -0.0%\n\t\t\trandom\t\t311.87s     312.15s    +0.1%\n\nsysbench fileio: roughly the same\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\nsysbench --test\u003dfileio --file-io-mode\u003dasync --file-test-mode\u003drndrw \\\n\t --file-total-size\u003d4G --file-block-size\u003d64K \\\n\t --num-threads\u003d001 --max-requests\u003d10000 --max-time\u003d900 run\n\n\t\t\t\tthreads    2.6.20   on-demand    delta\n\t\tfirst run\n\t\t\t\t      1   59.1974s    59.2262s  +0.0%\n\t\t\t\t      2   58.0575s    58.2269s  +0.3%\n\t\t\t\t      4   48.0545s    47.1164s  -2.0%\n\t\t\t\t      8   41.0684s    41.2229s  +0.4%\n\t\t\t\t     16   35.8817s    36.4448s  +1.6%\n\t\t\t\t     32   32.6614s    32.8240s  +0.5%\n\t\t\t\t     64   23.7601s    24.1481s  +1.6%\n\t\t\t\t    128   24.3719s    23.8225s  -2.3%\n\t\t\t\t    256   23.2366s    22.0488s  -5.1%\n\n\t\tsecond run\n\t\t\t\t      1   59.6720s    59.5671s  -0.2%\n\t\t\t\t      8   41.5158s    41.9541s  +1.1%\n\t\t\t\t     64   25.0200s    23.9634s  -4.2%\n\t\t\t\t    256   22.5491s    20.9486s  -7.1%\n\nNote that the numbers are not very stable because of the writes.\nThe overall performance is close when we sum all seconds up:\n\n                sum all up               495.046s    491.514s   -0.7%\n\nsysbench oltp (trans/sec): up to 8% gain\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\nsysbench --test\u003doltp --oltp-table-size\u003d10000000 --oltp-read-only \\\n\t --mysql-socket\u003d/var/run/mysqld/mysqld.sock \\\n\t --mysql-user\u003droot --mysql-password\u003dreadahead \\\n\t --num-threads\u003d064 --max-requests\u003d10000 --max-time\u003d900 run\n\n\t10000-transactions run\n\t\t\t\tthreads    2.6.20   on-demand    gain\n\t\t\t\t      1     62.81       64.56   +2.8%\n\t\t\t\t      2     67.97       70.93   +4.4%\n\t\t\t\t      4     81.81       85.87   +5.0%\n\t\t\t\t      8     94.60       97.89   +3.5%\n\t\t\t\t     16     99.07      104.68   +5.7%\n\t\t\t\t     32     95.93      104.28   +8.7%\n\t\t\t\t     64     96.48      103.68   +7.5%\n\t5000-transactions run\n\t\t\t\t      1     48.21       48.65   +0.9%\n\t\t\t\t      8     68.60       70.19   +2.3%\n\t\t\t\t     64     70.57       74.72   +5.9%\n\t2000-transactions run\n\t\t\t\t      1     37.57       38.04   +1.3%\n\t\t\t\t      2     38.43       38.99   +1.5%\n\t\t\t\t      4     45.39       46.45   +2.3%\n\t\t\t\t      8     51.64       52.36   +1.4%\n\t\t\t\t     16     54.39       55.18   +1.5%\n\t\t\t\t     32     52.13       54.49   +4.5%\n\t\t\t\t     64     54.13       54.61   +0.9%\n\nThat\u0027s interesting results. Some investigations show that\n\t- MySQL is accessing the db file non-uniformly: some parts are\n\t  more hot than others\n\t- It is mostly doing 4-page random reads, and sometimes doing two\n\t  reads in a row, the latter one triggers a 16-page readahead.\n\t- The on-demand readahead leaves many lookahead pages (flagged\n\t  PG_readahead) there. Many of them will be hit, and trigger\n\t  more readahead pages. Which might save more seeks.\n\t- Naturally, the readahead windows tend to lie in hot areas,\n\t  and the lookahead pages in hot areas is more likely to be hit.\n\t- The more overall read density, the more possible gain.\n\nThat also explains the adaptive readahead tricks for clustered random reads.\n\nreadahead thrashing: 3 times better\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\nWe boot kernel with \"mem\u003d128m single\", and start a 100KB/s stream on every\nsecond, until reaching 200 streams.\n\n\t\t\t      max throughput     min avg I/O size\n\t\t2.6.20:            5MB/s               16KB\n\t\ton-demand:        15MB/s              140KB\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Steven Pratt \u003cslpratt@austin.ibm.com\u003e\nCc: Ram Pai \u003clinuxram@us.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.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": "5ce1110b92b31d079aa443e967f43a2294e01194",
      "tree": "eff95b4c8ede07d0777ca68a30d686d1acbb5c73",
      "parents": [
        "f615bfca468c9b80ed2d09be5fdbaf470a32c045"
      ],
      "author": {
        "name": "Fengguang Wu",
        "email": "wfg@mail.ustc.edu.cn",
        "time": "Thu Jul 19 01:47:59 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:44 2007 -0700"
      },
      "message": "readahead: data structure and routines\n\nExtend struct file_ra_state to support the on-demand readahead logic.  Also\ndefine some helpers for it.\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Steven Pratt \u003cslpratt@austin.ibm.com\u003e\nCc: Ram Pai \u003clinuxram@us.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.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": "f615bfca468c9b80ed2d09be5fdbaf470a32c045",
      "tree": "4771fd91ae020efaafbe653ad78ba5e32d56e8a3",
      "parents": [
        "46fc3e7b4e7233a0ac981ac9084b55217318d04d"
      ],
      "author": {
        "name": "Fengguang Wu",
        "email": "wfg@mail.ustc.edu.cn",
        "time": "Thu Jul 19 01:47:58 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:43 2007 -0700"
      },
      "message": "readahead: MIN_RA_PAGES/MAX_RA_PAGES macros\n\nDefine two convenient macros for read-ahead:\n\t- MAX_RA_PAGES: rounded down counterpart of VM_MAX_READAHEAD\n\t- MIN_RA_PAGES: rounded _up_ counterpart of VM_MIN_READAHEAD\n\nNote that the rounded up MIN_RA_PAGES will work flawlessly with _large_\npage sizes like 64k.\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Steven Pratt \u003cslpratt@austin.ibm.com\u003e\nCc: Ram Pai \u003clinuxram@us.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\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": "46fc3e7b4e7233a0ac981ac9084b55217318d04d",
      "tree": "555bededb43671605fa085d3b4d330d31aa4af5c",
      "parents": [
        "d77c2d7cc5126639a47d73300b40d461f2811a0f"
      ],
      "author": {
        "name": "Fengguang Wu",
        "email": "wfg@mail.ustc.edu.cn",
        "time": "Thu Jul 19 01:47:57 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:43 2007 -0700"
      },
      "message": "readahead: add look-ahead support to __do_page_cache_readahead()\n\nAdd look-ahead support to __do_page_cache_readahead().\n\nIt works by\n\t- mark the Nth backwards page with PG_readahead,\n\t(which instructs the page\u0027s first reader to invoke readahead)\n\t- and only do the marking for newly allocated pages.\n\t(to prevent blindly doing readahead on already cached pages)\n\nLook-ahead is a technique to achieve I/O pipelining:\n\nWhile the application is working through a chunk of cached pages, the kernel\nreads-ahead the next chunk of pages _before_ time of need.  It effectively\nhides low level I/O latencies to high level applications.\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Steven Pratt \u003cslpratt@austin.ibm.com\u003e\nCc: Ram Pai \u003clinuxram@us.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.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": "d77c2d7cc5126639a47d73300b40d461f2811a0f",
      "tree": "d02b32ca92fde9a04be9bee0f0b7c8961479448c",
      "parents": [
        "2ba2d00363975242dee9bb22cf798b487e3cd61e"
      ],
      "author": {
        "name": "Fengguang Wu",
        "email": "wfg@mail.ustc.edu.cn",
        "time": "Thu Jul 19 01:47:55 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:43 2007 -0700"
      },
      "message": "readahead: introduce PG_readahead\n\nIntroduce a new page flag: PG_readahead.\n\nIt acts as a look-ahead mark, which tells the page reader: Hey, it\u0027s time to\ninvoke the read-ahead logic.  For the sake of I/O pipelining, don\u0027t wait until\nit runs out of cached pages!\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Steven Pratt \u003cslpratt@austin.ibm.com\u003e\nCc: Ram Pai \u003clinuxram@us.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.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": "3ee6dafc677a68e461a7ddafc94a580ebab80735",
      "tree": "6a92c9f5bd24ff80c52c944327c3b065234f7ad2",
      "parents": [
        "bb2d5ce16409efcdf94017a6b6fecd468226e29c"
      ],
      "author": {
        "name": "Miklos Szeredi",
        "email": "mszeredi@suse.cz",
        "time": "Thu Jul 19 01:47:24 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:41 2007 -0700"
      },
      "message": "only allow nonlinear vmas for ram backed filesystems\n\npage_mkclean() doesn\u0027t re-protect ptes for non-linear mappings, so a later\nre-dirty through such a mapping will not generate a fault, PG_dirty will\nnot reflect the dirty state and the dirty count will be skewed.  This\nimplies that msync() is also currently broken for nonlinear mappings.\n\nThe easiest solution is to emulate remap_file_pages on non-linear mappings\nwith simple mmap() for non ram-backed filesystems.  Applications continue\nto work (albeit slower), as long as the number of remappings remain below\nthe maximum vma count.\n\nHowever all currently known real uses of non-linear mappings are for ram\nbacked filesystems, which this patch doesn\u0027t affect.\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: William Lee Irwin III \u003cwli@holomorphy.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "79352894b28550ee0eee919149f57626ec1b3572",
      "tree": "849e6aa148c69b9df3920199255ca14792eeffa2",
      "parents": [
        "83c54070ee1a2d05c89793884bea1a03f2851ed4"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Thu Jul 19 01:47:22 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:41 2007 -0700"
      },
      "message": "mm: fix clear_page_dirty_for_io vs fault race\n\nFix msync data loss and (less importantly) dirty page accounting\ninaccuracies due to the race remaining in clear_page_dirty_for_io().\n\nThe deleted comment explains what the race was, and the added comments\nexplain how it is fixed.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "83c54070ee1a2d05c89793884bea1a03f2851ed4",
      "tree": "dc732f5a9b93fb7004ed23f551bd98b77cc580e0",
      "parents": [
        "d0217ac04ca6591841e5665f518e38064f4e65bd"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Thu Jul 19 01:47:05 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:41 2007 -0700"
      },
      "message": "mm: fault feedback #2\n\nThis patch completes Linus\u0027s wish that the fault return codes be made into\nbit flags, which I agree makes everything nicer.  This requires requires\nall handle_mm_fault callers to be modified (possibly the modifications\nshould go further and do things like fault accounting in handle_mm_fault --\nhowever that would be for another patch).\n\n[akpm@linux-foundation.org: fix alpha build]\n[akpm@linux-foundation.org: fix s390 build]\n[akpm@linux-foundation.org: fix sparc build]\n[akpm@linux-foundation.org: fix sparc64 build]\n[akpm@linux-foundation.org: fix ia64 build]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Richard Henderson \u003crth@twiddle.net\u003e\nCc: Ivan Kokshaysky \u003cink@jurassic.park.msu.ru\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nCc: Ian Molton \u003cspyro@f2s.com\u003e\nCc: Bryan Wu \u003cbryan.wu@analog.com\u003e\nCc: Mikael Starvik \u003cstarvik@axis.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Yoshinori Sato \u003cysato@users.sourceforge.jp\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Hirokazu Takata \u003ctakata@linux-m32r.org\u003e\nCc: Geert Uytterhoeven \u003cgeert@linux-m68k.org\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: Greg Ungerer \u003cgerg@uclinux.org\u003e\nCc: Matthew Wilcox \u003cwilly@debian.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Kazumoto Kojima \u003ckkojima@rr.iij4u.or.jp\u003e\nCc: Richard Curnow \u003crc@rc0.org.uk\u003e\nCc: William Lee Irwin III \u003cwli@holomorphy.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Jeff Dike \u003cjdike@addtoit.com\u003e\nCc: Paolo \u0027Blaisorblade\u0027 Giarrusso \u003cblaisorblade@yahoo.it\u003e\nCc: Miles Bader \u003cuclinux-v850@lsi.nec.co.jp\u003e\nCc: Chris Zankel \u003cchris@zankel.net\u003e\nAcked-by: Kyle McMartin \u003ckyle@mcmartin.ca\u003e\nAcked-by: Haavard Skinnemoen \u003chskinnemoen@atmel.com\u003e\nAcked-by: Ralf Baechle \u003cralf@linux-mips.org\u003e\nAcked-by: Andi Kleen \u003cak@muc.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\n[ Still apparently needs some ARM and PPC loving - Linus ]\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "d0217ac04ca6591841e5665f518e38064f4e65bd",
      "tree": "d3309094bb734d34773f97d642593e298a5cfcfc",
      "parents": [
        "ed2f2f9b3ff8debdf512f7687b232c3c1d7d60d7"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Thu Jul 19 01:47:03 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:41 2007 -0700"
      },
      "message": "mm: fault feedback #1\n\nChange -\u003efault prototype.  We now return an int, which contains\nVM_FAULT_xxx code in the low byte, and FAULT_RET_xxx code in the next byte.\n FAULT_RET_ code tells the VM whether a page was found, whether it has been\nlocked, and potentially other things.  This is not quite the way he wanted\nit yet, but that\u0027s changed in the next patch (which requires changes to\narch code).\n\nThis means we no longer set VM_CAN_INVALIDATE in the vma in order to say\nthat a page is locked which requires filemap_nopage to go away (because we\ncan no longer remain backward compatible without that flag), but we were\ngoing to do that anyway.\n\nstruct fault_data is renamed to struct vm_fault as Linus asked. address\nis now a void __user * that we should firmly encourage drivers not to use\nwithout really good reason.\n\nThe page is now returned via a page pointer in the vm_fault struct.\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": "6967614761fd305b3414d9485d89dc2e0a407410",
      "tree": "498bd41e9cf8795535f597696dd2c834d79ffb44",
      "parents": [
        "54cb8821de07f2ffcd28c380ce9b93d5784b40d7"
      ],
      "author": {
        "name": "Mark Fasheh",
        "email": "mark.fasheh@oracle.com",
        "time": "Thu Jul 19 01:47:00 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:41 2007 -0700"
      },
      "message": "ocfs2: release page lock before calling -\u003epage_mkwrite\n\n__do_fault() was calling -\u003epage_mkwrite() with the page lock held, which\nviolates the locking rules for that callback.  Release and retake the page\nlock around the callback to avoid deadlocking file systems which manually\ntake it.\n\nSigned-off-by: Mark Fasheh \u003cmark.fasheh@oracle.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": "54cb8821de07f2ffcd28c380ce9b93d5784b40d7",
      "tree": "1de676534963d96af42863b20191bc9f80060dea",
      "parents": [
        "d00806b183152af6d24f46f0c33f14162ca1262a"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Thu Jul 19 01:46:59 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:41 2007 -0700"
      },
      "message": "mm: merge populate and nopage into fault (fixes nonlinear)\n\nNonlinear mappings are (AFAIKS) simply a virtual memory concept that encodes\nthe virtual address -\u003e file offset differently from linear mappings.\n\n-\u003epopulate is a layering violation because the filesystem/pagecache code\nshould need to know anything about the virtual memory mapping.  The hitch here\nis that the -\u003enopage handler didn\u0027t pass down enough information (ie.  pgoff).\n But it is more logical to pass pgoff rather than have the -\u003enopage function\ncalculate it itself anyway (because that\u0027s a similar layering violation).\n\nHaving the populate handler install the pte itself is likewise a nasty thing\nto be doing.\n\nThis patch introduces a new fault handler that replaces -\u003enopage and\n-\u003epopulate and (later) -\u003enopfn.  Most of the old mechanism is still in place\nso there is a lot of duplication and nice cleanups that can be removed if\neveryone switches over.\n\nThe rationale for doing this in the first place is that nonlinear mappings are\nsubject to the pagefault vs invalidate/truncate race too, and it seemed stupid\nto duplicate the synchronisation logic rather than just consolidate the two.\n\nAfter this patch, MAP_NONBLOCK no longer sets up ptes for pages present in\npagecache.  Seems like a fringe functionality anyway.\n\nNOPAGE_REFAULT is removed.  This should be implemented with -\u003efault, and no\nusers have hit mainline yet.\n\n[akpm@linux-foundation.org: cleanup]\n[randy.dunlap@oracle.com: doc. fixes for readahead]\n[akpm@linux-foundation.org: build fix]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "d00806b183152af6d24f46f0c33f14162ca1262a",
      "tree": "36f829cf13d5410374a3f00b56ec0b1f8dc3ce3c",
      "parents": [
        "589f1e81bde732dd0b1bc5d01b6bddd4bcb4527b"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Thu Jul 19 01:46:57 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Jul 19 10:04:41 2007 -0700"
      },
      "message": "mm: fix fault vs invalidate race for linear mappings\n\nFix the race between invalidate_inode_pages and do_no_page.\n\nAndrea Arcangeli identified a subtle race between invalidation of pages from\npagecache with userspace mappings, and do_no_page.\n\nThe issue is that invalidation has to shoot down all mappings to the page,\nbefore it can be discarded from the pagecache.  Between shooting down ptes to\na particular page, and actually dropping the struct page from the pagecache,\ndo_no_page from any process might fault on that page and establish a new\nmapping to the page just before it gets discarded from the pagecache.\n\nThe most common case where such invalidation is used is in file truncation.\nThis case was catered for by doing a sort of open-coded seqlock between the\nfile\u0027s i_size, and its truncate_count.\n\nTruncation will decrease i_size, then increment truncate_count before\nunmapping userspace pages; do_no_page will read truncate_count, then find the\npage if it is within i_size, and then check truncate_count under the page\ntable lock and back out and retry if it had subsequently been changed (ptl\nwill serialise against unmapping, and ensure a potentially updated\ntruncate_count is actually visible).\n\nComplexity and documentation issues aside, the locking protocol fails in the\ncase where we would like to invalidate pagecache inside i_size.  do_no_page\ncan come in anytime and filemap_nopage is not aware of the invalidation in\nprogress (as it is when it is outside i_size).  The end result is that\ndangling (-\u003emapping \u003d\u003d NULL) pages that appear to be from a particular file\nmay be mapped into userspace with nonsense data.  Valid mappings to the same\nplace will see a different page.\n\nAndrea implemented two working fixes, one using a real seqlock, another using\na page-\u003eflags bit.  He also proposed using the page lock in do_no_page, but\nthat was initially considered too heavyweight.  However, it is not a global or\nper-file lock, and the page cacheline is modified in do_no_page to increment\n_count and _mapcount anyway, so a further modification should not be a large\nperformance hit.  Scalability is not an issue.\n\nThis patch implements this latter approach.  -\u003enopage implementations return\nwith the page locked if it is possible for their underlying file to be\ninvalidated (in that case, they must set a special vm_flags bit to indicate\nso).  do_no_page only unlocks the page after setting up the mapping\ncompletely.  invalidation is excluded because it holds the page lock during\ninvalidation of each page (and ensures that the page is not mapped while\nholding the lock).\n\nThis also allows significant simplifications in do_no_page, because we have\nthe page locked in the right place in the pagecache from the start.\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": "5f4352fbffd6c45123dbce9e195efd54df4e177e",
      "tree": "e2a0316e2f2d22c266e7cae3015ddc0f2f77f64f",
      "parents": [
        "bdef40a6af64a0140a65df49bf504124d57094a9"
      ],
      "author": {
        "name": "Jeremy Fitzhardinge",
        "email": "jeremy@xensource.com",
        "time": "Tue Jul 17 18:37:04 2007 -0700"
      },
      "committer": {
        "name": "Jeremy Fitzhardinge",
        "email": "jeremy@goop.org",
        "time": "Wed Jul 18 08:47:41 2007 -0700"
      },
      "message": "Allocate and free vmalloc areas\n\nAllocate/release a chunk of vmalloc address space:\n alloc_vm_area reserves a chunk of address space, and makes sure all\n the pagetables are constructed for that address range - but no pages.\n\n free_vm_area releases the address space range.\n\nSigned-off-by: Jeremy Fitzhardinge \u003cjeremy@xensource.com\u003e\nSigned-off-by: Ian Pratt \u003cian.pratt@xensource.com\u003e\nSigned-off-by: Christian Limpach \u003cChristian.Limpach@cl.cam.ac.uk\u003e\nSigned-off-by: Chris Wright \u003cchrisw@sous-sol.org\u003e\nCc: \"Jan Beulich\" \u003cJBeulich@novell.com\u003e\nCc: \"Andi Kleen\" \u003cak@muc.de\u003e\n"
    },
    {
      "commit": "1e66df3ee301209f4a38df097d7cc5cb9b367a3f",
      "tree": "55beb2a342dbe08c0404f749e02808e3f09023ac",
      "parents": [
        "8b4a40809e5330c9da5d20107d693d92d73b31dc"
      ],
      "author": {
        "name": "Jeremy Fitzhardinge",
        "email": "jeremy@xensource.com",
        "time": "Tue Jul 17 18:37:02 2007 -0700"
      },
      "committer": {
        "name": "Jeremy Fitzhardinge",
        "email": "jeremy@goop.org",
        "time": "Wed Jul 18 08:47:39 2007 -0700"
      },
      "message": "add kstrndup\n\nAdd a kstrndup function, modelled on strndup.  Like strndup this\nreturns a string copied into its own allocated memory, but it copies\nno more than the specified number of bytes from the source.\n\nRemove private strndup() from irda code.\n\nSigned-off-by: Jeremy Fitzhardinge \u003cjeremy@xensource.com\u003e\nSigned-off-by: Chris Wright \u003cchrisw@sous-sol.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: YOSHIFUJI Hideaki \u003cyoshfuji@linux-ipv6.org\u003e\nCc: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@mandriva.com\u003e\nCc: Al Viro \u003cviro@ftp.linux.org.uk\u003e\nCc: Panagiotis Issaris \u003ctakis@issaris.org\u003e\nCc: Rene Scharfe \u003crene.scharfe@lsrfire.ath.cx\u003e\n"
    },
    {
      "commit": "c2f1a551dea8b37c2e0cb886885c250fb703e9d8",
      "tree": "11a5f256703d856017ceb2268bd02b7b510dee30",
      "parents": [
        "1e5140279f31e47d58ed6036ee61ba7a65710e63"
      ],
      "author": {
        "name": "Meelap Shah",
        "email": "meelap@umich.edu",
        "time": "Tue Jul 17 04:04:39 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:07 2007 -0700"
      },
      "message": "knfsd: nfsd4: vary maximum delegation limit based on RAM size\n\nOur original NFSv4 delegation policy was to give out a read delegation on any\nopen when it was possible to.\n\nSince the lifetime of a delegation isn\u0027t limited to that of an open, a client\nmay quite reasonably hang on to a delegation as long as it has the inode\ncached.  This becomes an obvious problem the first time a client\u0027s inode cache\napproaches the size of the server\u0027s total memory.\n\nOur first quick solution was to add a hard-coded limit.  This patch makes a\nmild incremental improvement by varying that limit according to the server\u0027s\ntotal memory size, allowing at most 4 delegations per megabyte of RAM.\n\nMy quick back-of-the-envelope calculation finds that in the worst case (where\nevery delegation is for a different inode), a delegation could take about\n1.5K, which would make the worst case usage about 6% of memory.  The new limit\nworks out to be about the same as the old on a 1-gig server.\n\n[akpm@linux-foundation.org: Don\u0027t needlessly bloat vmlinux]\n[akpm@linux-foundation.org: Make it right for highmem machines]\nSigned-off-by: \"J. Bruce Fields\" \u003cbfields@citi.umich.edu\u003e\nSigned-off-by: Neil Brown \u003cneilb@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": "a569425512253992cc64ebf8b6d00a62f986db3e",
      "tree": "7ea72c75c54697bddbad807af89cc549d7426a69",
      "parents": [
        "6dd4ac3b30b81b5bd0d628af1c89b7da689a38ea"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@infradead.org",
        "time": "Tue Jul 17 04:04:28 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:06 2007 -0700"
      },
      "message": "knfsd: exportfs: add exportfs.h header\n\ncurrently the export_operation structure and helpers related to it are in\nfs.h.  fs.h is already far too large and there are very few places needing the\nexport bits, so split them off into a separate header.\n\n[akpm@linux-foundation.org: fix cifs build]\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nCc: Steven French \u003csfrench@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": "9281acea6a3687ff0f262e0be31eac34895b95d7",
      "tree": "f060d6e4f6a5da1c82bc789104683d39377a2e9a",
      "parents": [
        "b45d52797432bd6b5d9786dbda940eb8d0b9ed06"
      ],
      "author": {
        "name": "Tejun Heo",
        "email": "htejun@gmail.com",
        "time": "Tue Jul 17 04:03:51 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:03 2007 -0700"
      },
      "message": "kallsyms: make KSYM_NAME_LEN include space for trailing \u0027\\0\u0027\n\nKSYM_NAME_LEN is peculiar in that it does not include the space for the\ntrailing \u0027\\0\u0027, forcing all users to use KSYM_NAME_LEN + 1 when allocating\nbuffer.  This is nonsense and error-prone.  Moreover, when the caller\nforgets that it\u0027s very likely to subtly bite back by corrupting the stack\nbecause the last position of the buffer is always cleared to zero.\n\nThis patch increments KSYM_NAME_LEN by one and updates code accordingly.\n\n* off-by-one bug in asm-powerpc/kprobes.h::kprobe_lookup_name() macro\n  is fixed.\n\n* Where MODULE_NAME_LEN and KSYM_NAME_LEN were used together,\n  MODULE_NAME_LEN was treated as if it didn\u0027t include space for the\n  trailing \u0027\\0\u0027.  Fix it.\n\nSigned-off-by: Tejun Heo \u003chtejun@gmail.com\u003e\nAcked-by: Paulo Marques \u003cpmarques@grupopie.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": "2a7326b5bbafac4c96bcdb944b2a773593030b96",
      "tree": "25bc49eadea73cf2133198963d1baf3f5def7316",
      "parents": [
        "831441862956fffa17b9801db37e6ea1650b0f69"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:37 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:02 2007 -0700"
      },
      "message": "CONFIG_BOUNCE to avoid useless inclusion of bounce buffer logic\n\nThe bounce buffer logic is included on systems that do not need it.  If a\nsystem does not have zones like ZONE_DMA and ZONE_HIGHMEM that can lead to\nthe use of bounce buffers then there is no need to reserve memory pools etc\netc.  This is true f.e.  for SGI Altix.\n\nAlso nicifies the Makefile and gets rid of the tricky \"and\" there.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "831441862956fffa17b9801db37e6ea1650b0f69",
      "tree": "b0334921341f8f1734bdd3243de76d676329d21c",
      "parents": [
        "787d2214c19bcc9b6ac48af0ce098277a801eded"
      ],
      "author": {
        "name": "Rafael J. Wysocki",
        "email": "rjw@sisk.pl",
        "time": "Tue Jul 17 04:03:35 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:02 2007 -0700"
      },
      "message": "Freezer: make kernel threads nonfreezable by default\n\nCurrently, the freezer treats all tasks as freezable, except for the kernel\nthreads that explicitly set the PF_NOFREEZE flag for themselves.  This\napproach is problematic, since it requires every kernel thread to either\nset PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn\u0027t\ncare for the freezing of tasks at all.\n\nIt seems better to only require the kernel threads that want to or need to\nbe frozen to use some freezer-related code and to remove any\nfreezer-related code from the other (nonfreezable) kernel threads, which is\ndone in this patch.\n\nThe patch causes all kernel threads to be nonfreezable by default (ie.  to\nhave PF_NOFREEZE set by default) and introduces the set_freezable()\nfunction that should be called by the freezable kernel threads in order to\nunset PF_NOFREEZE.  It also makes all of the currently freezable kernel\nthreads call set_freezable(), so it shouldn\u0027t cause any (intentional)\nchange of behaviour to appear.  Additionally, it updates documentation to\ndescribe the freezing of tasks more accurately.\n\n[akpm@linux-foundation.org: build fixes]\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nAcked-by: Nigel Cunningham \u003cnigel@nigel.suspend2.net\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Gautham R Shenoy \u003cego@in.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": "787d2214c19bcc9b6ac48af0ce098277a801eded",
      "tree": "a040604fdf9620a66dc83a0cde4f2140e2ec25b3",
      "parents": [
        "a1ed3dda0ad181532f1e0f0d548067fb9fdddac4"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Tue Jul 17 04:03:34 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:02 2007 -0700"
      },
      "message": "fs: introduce some page/buffer invariants\n\nIt is a bug to set a page dirty if it is not uptodate unless it has\nbuffers.  If the page has buffers, then the page may be dirty (some buffers\ndirty) but not uptodate (some buffers not uptodate).  The exception to this\nrule is if the set_page_dirty caller is racing with truncate or invalidate.\n\nA buffer can not be set dirty if it is not uptodate.\n\nIf either of these situations occurs, it indicates there could be some data\nloss problem.  Some of these warnings could be a harmless one where the\npage or buffer is set uptodate immediately after it is dirtied, however we\nshould fix those up, and enforce this ordering.\n\nBring the order of operations for truncate into line with those of\ninvalidate.  This will prevent a page from being able to go !uptodate while\nwe\u0027re holding the tree_lock, which is probably a good thing anyway.\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": "a1ed3dda0ad181532f1e0f0d548067fb9fdddac4",
      "tree": "dbbb62a8a1816e24369caca1886576154b588340",
      "parents": [
        "b5fab14e5d87df4d94161ae5f5e0c8625f9ffda2"
      ],
      "author": {
        "name": "Robert P. J. Day",
        "email": "rpjday@mindspring.com",
        "time": "Tue Jul 17 04:03:33 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:02 2007 -0700"
      },
      "message": "MM: Make needlessly global hugetlb_no_page() static.\n\nSigned-off-by: Robert P. J. Day \u003crpjday@mindspring.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "8ab1372fac5684de56c68f0da1ddc90e1c4ce740",
      "tree": "42594d334c83ff18655731bf4d9f5d023c9c2886",
      "parents": [
        "a0e1d1be204612ee83b3afe8aa24c5d27e63d464"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:32 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:02 2007 -0700"
      },
      "message": "SLUB: Fix CONFIG_SLUB_DEBUG use for CONFIG_NUMA\n\nWe currently cannot disable CONFIG_SLUB_DEBUG for CONFIG_NUMA.  Now that\nembedded systems start to use NUMA we may need this.\n\nPut an #ifdef around places where NUMA only code uses fields only valid\nfor CONFIG_SLUB_DEBUG.\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": "a0e1d1be204612ee83b3afe8aa24c5d27e63d464",
      "tree": "a32092a7eda82c84c5e195de5efd2cb6c0bff553",
      "parents": [
        "434e245ddd3f14aa8eef97cae16c71b863ab092a"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:31 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:02 2007 -0700"
      },
      "message": "SLUB: Move sysfs operations outside of slub_lock\n\nSysfs can do a gazillion things when called.  Make sure that we do not call\nany sysfs functions while holding the slub_lock.\n\nJust protect the essentials:\n\n1. The list of all slab caches\n2. The kmalloc_dma array\n3. The ref counters of the slabs.\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": "434e245ddd3f14aa8eef97cae16c71b863ab092a",
      "tree": "bbfd9d012416e6882fd714650435a78ce4f9da9b",
      "parents": [
        "94f6030ca792c57422f04a73e7a872d8325946d3"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:30 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:02 2007 -0700"
      },
      "message": "SLUB: Do not allocate object bit array on stack\n\nThe objects per slab increase with the current patches in mm since we allow up\nto order 3 allocs by default.  More patches in mm actually allow to use 2M or\nhigher sized slabs.  For slab validation we need per object bitmaps in order\nto check a slab.  We end up with up to 64k objects per slab resulting in a\npotential requirement of 8K stack space.  That does not look good.\n\nAllocate the bit arrays via kmalloc.\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": "94f6030ca792c57422f04a73e7a872d8325946d3",
      "tree": "0197f24d82b1706f1b0521f2cf68feeff64123df",
      "parents": [
        "81cda6626178cd55297831296ba8ecedbfd8b52d"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:29 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:02 2007 -0700"
      },
      "message": "Slab allocators: Replace explicit zeroing with __GFP_ZERO\n\nkmalloc_node() and kmem_cache_alloc_node() were not available in a zeroing\nvariant in the past.  But with __GFP_ZERO it is possible now to do zeroing\nwhile allocating.\n\nUse __GFP_ZERO to remove the explicit clearing of memory via memset whereever\nwe can.\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": "81cda6626178cd55297831296ba8ecedbfd8b52d",
      "tree": "fa35a6a04db63080bbeb42f33f4b4a891b7fc96c",
      "parents": [
        "ce15fea8274acca06daa1674322d37a7d3f0036b"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:29 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "Slab allocators: Cleanup zeroing allocations\n\nIt becomes now easy to support the zeroing allocs with generic inline\nfunctions in slab.h.  Provide inline definitions to allow the continued use of\nkzalloc, kmem_cache_zalloc etc but remove other definitions of zeroing\nfunctions from the slab allocators and util.c.\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": "ce15fea8274acca06daa1674322d37a7d3f0036b",
      "tree": "ade273da0bfdc0eadb176d847012ce1656b75c93",
      "parents": [
        "12ad6843dd145050231ec5a27fe326c2085f9095"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:28 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "SLUB: Do not use length parameter in slab_alloc()\n\nWe can get to the length of the object through the kmem_cache_structure.  The\nadditional parameter does no good and causes the compiler to generate bad\ncode.\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": "12ad6843dd145050231ec5a27fe326c2085f9095",
      "tree": "36159963da99f44f34b6bb9c7c1a294b2a56642f",
      "parents": [
        "5af328a51067d8dc574c2b2c2629dd436a1e841e"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:28 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "SLUB: Style fix up the loop to disable small slabs\n\nDo proper spacing and we only need to do this in steps of 8.\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": "5af328a51067d8dc574c2b2c2629dd436a1e841e",
      "tree": "ca1c305a1019eb49a9ead016e6e31aafc3ce8a46",
      "parents": [
        "7b55f620e6908fec2d51751320c2a9459b5f375f"
      ],
      "author": {
        "name": "Adrian Bunk",
        "email": "bunk@stusta.de",
        "time": "Tue Jul 17 04:03:27 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "mm/slub.c: make code static\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\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": "7b55f620e6908fec2d51751320c2a9459b5f375f",
      "tree": "6fb32a7051b4358018fb26a3125e3b9621418abe",
      "parents": [
        "f1b263393626fe66bee34ccdbf0487cd377e0213"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:27 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "SLUB: Simplify dma index -\u003e size calculation\n\nThere is no need to caculate the dma slab size ourselves. We can simply\nlookup the size of the corresponding non dma slab.\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": "f1b263393626fe66bee34ccdbf0487cd377e0213",
      "tree": "c144c6f8c0fd8f5eeeac1504bf7204c09938135f",
      "parents": [
        "dfce8648d64c07eade40d456d59cb4bfcbba008c"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:26 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "SLUB: faster more efficient slab determination for __kmalloc\n\nkmalloc_index is a long series of comparisons.  The attempt to replace\nkmalloc_index with something more efficient like ilog2 failed due to compiler\nissues with constant folding on gcc 3.3 / powerpc.\n\nkmalloc_index()\u0027es long list of comparisons works fine for constant folding\nsince all the comparisons are optimized away.  However, SLUB also uses\nkmalloc_index to determine the slab to use for the __kmalloc_xxx functions.\nThis leads to a large set of comparisons in get_slab().\n\nThe patch here allows to get rid of that list of comparisons in get_slab():\n\n1. If the requested size is larger than 192 then we can simply use\n   fls to determine the slab index since all larger slabs are\n   of the power of two type.\n\n2. If the requested size is smaller then we cannot use fls since there\n   are non power of two caches to be considered. However, the sizes are\n   in a managable range. So we divide the size by 8. Then we have only\n   24 possibilities left and then we simply look up the kmalloc index\n   in a table.\n\nCode size of slub.o decreases by more than 200 bytes through this patch.\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": "dfce8648d64c07eade40d456d59cb4bfcbba008c",
      "tree": "7141882bd03d9848ec6299a48bc08796a8382062",
      "parents": [
        "2e443fd003d76394a8ceb78f079260478aa10710"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:25 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "SLUB: do proper locking during dma slab creation\n\nWe modify the kmalloc_cache_dma[] array without proper locking.  Do the proper\nlocking and undo the dma cache creation if another processor has already\ncreated it.\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": "2e443fd003d76394a8ceb78f079260478aa10710",
      "tree": "e67fe6e1382ec7a2f636ab09285a41620192eb9f",
      "parents": [
        "0c710013200e72b5e0bc680ff4ec6bdac53c5ce8"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:24 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "SLUB: extract dma_kmalloc_cache from get_cache.\n\nThe rarely used dma functionality in get_slab() makes the function too\ncomplex.  The compiler begins to spill variables from the working set onto the\nstack.  The created function is only used in extremely rare cases so make sure\nthat the compiler does not decide on its own to merge it back into get_slab().\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": "0c710013200e72b5e0bc680ff4ec6bdac53c5ce8",
      "tree": "160c44e8036e9ea65e7863271f925954d05ed091",
      "parents": [
        "d07dbea46405b37d59495eb4de9d1056dcfb7c6d"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:24 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "SLUB: add some more inlines and #ifdef CONFIG_SLUB_DEBUG\n\nAdd #ifdefs around data structures only needed if debugging is compiled into\nSLUB.\n\nAdd inlines to small functions to reduce code size.\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": "d07dbea46405b37d59495eb4de9d1056dcfb7c6d",
      "tree": "221376c8c5509a88f8942246180685d5c01baf46",
      "parents": [
        "6cb8f91320d3e720351c21741da795fed580b21b"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:23 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "Slab allocators: support __GFP_ZERO in all allocators\n\nA kernel convention for many allocators is that if __GFP_ZERO is passed to an\nallocator then the allocated memory should be zeroed.\n\nThis is currently not supported by the slab allocators.  The inconsistency\nmakes it difficult to implement in derived allocators such as in the uncached\nallocator and the pool allocators.\n\nIn addition the support zeroed allocations in the slab allocators does not\nhave a consistent API.  There are no zeroing allocator functions for NUMA node\nplacement (kmalloc_node, kmem_cache_alloc_node).  The zeroing allocations are\nonly provided for default allocs (kzalloc, kmem_cache_zalloc_node).\n__GFP_ZERO will make zeroing universally available and does not require any\naddititional functions.\n\nSo add the necessary logic to all slab allocators to support __GFP_ZERO.\n\nThe code is added to the hot path.  The gfp flags are on the stack and so the\ncacheline is readily available for checking if we want a zeroed object.\n\nZeroing while allocating is now a frequent operation and we seem to be\ngradually approaching a 1-1 parity between zeroing and not zeroing allocs.\nThe current tree has 3476 uses of kmalloc vs 2731 uses of kzalloc.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-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": "6cb8f91320d3e720351c21741da795fed580b21b",
      "tree": "c9f73c8b82cd0f6c534939b8b9f36e8615b0ab2d",
      "parents": [
        "ef2ad80c7d255ed0449eda947c2d700635b7e0f5"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:22 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "Slab allocators: consistent ZERO_SIZE_PTR support and NULL result semantics\n\nDefine ZERO_OR_NULL_PTR macro to be able to remove the checks from the\nallocators.  Move ZERO_SIZE_PTR related stuff into slab.h.\n\nMake ZERO_SIZE_PTR work for all slab allocators and get rid of the\nWARN_ON_ONCE(size \u003d\u003d 0) that is still remaining in SLAB.\n\nMake slub return NULL like the other allocators if a too large memory segment\nis requested via __kmalloc.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-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": "ef2ad80c7d255ed0449eda947c2d700635b7e0f5",
      "tree": "bc44916bdb25de29c8211566a4b5a1c041fa8ab6",
      "parents": [
        "d45f39cb06610ea456e1d689149b9becacda8b40"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:21 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "Slab allocators: consolidate code for krealloc in mm/util.c\n\nThe size of a kmalloc object is readily available via ksize().  ksize is\nprovided by all allocators and thus we can implement krealloc in a generic\nway.\n\nImplement krealloc in mm/util.c and drop slab specific implementations of\nkrealloc.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-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": "d45f39cb06610ea456e1d689149b9becacda8b40",
      "tree": "b320a92971c43c42ee1e440e8b43c864485452ab",
      "parents": [
        "6300ea75031e7aebfe3331245b7f750d82621223"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:21 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "SLUB Debug: fix initial object debug state of NUMA bootstrap objects\n\nThe function we are calling to initialize object debug state during early NUMA\nbootstrap sets up an inactive object giving it the wrong redzone signature.\nThe bootstrap nodes are active objects and should have active redzone\nsignatures.\n\nCurrently slab validation complains and reverts the object to active state.\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": "6300ea75031e7aebfe3331245b7f750d82621223",
      "tree": "ccd49c8173ac6b8449b57555bd0070ceafe3f3b8",
      "parents": [
        "68dff6a9af9f27df5aeee6d0339818b0e36c1b51"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:20 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "SLUB: ensure that the number of objects per slab stays low for high orders\n\nCurrently SLUB has no provision to deal with too high page orders that may\nbe specified on the kernel boot line.  If an order higher than 6 (on a 4k\nplatform) is generated then we will BUG() because slabs get more than 65535\nobjects.\n\nAdd some logic that decreases order for slabs that have too many objects.\nThis allow booting with slab sizes up to MAX_ORDER.\n\nFor example\n\n\tslub_min_order\u003d10\n\nwill boot with a default slab size of 4M and reduce slab sizes for small\nobject sizes to lower orders if the number of objects becomes too big.\nLarge slab sizes like that allow a concentration of objects of the same\nslab cache under as few as possible TLB entries and thus potentially\nreduces TLB pressure.\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": "68dff6a9af9f27df5aeee6d0339818b0e36c1b51",
      "tree": "f25cc5e85925a8901e301e8f8d5d04188f27c0ee",
      "parents": [
        "5b95a4acf157eee552e013795b54eaa2ab1ee4a1"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:20 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "SLUB slab validation: Move tracking information alloc outside of lock\n\nWe currently have to do an GFP_ATOMIC allocation because the list_lock is\nalready taken when we first allocate memory for tracking allocation\ninformation.  It would be better if we could avoid atomic allocations.\n\nAllocate a size of the tracking table that is usually sufficient (one page)\nbefore we take the list lock.  We will then only do the atomic allocation\nif we need to resize the table to become larger than a page (mostly only\nneeded under large NUMA because of the tracking of cpus and nodes otherwise\nthe table stays small).\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": "5b95a4acf157eee552e013795b54eaa2ab1ee4a1",
      "tree": "8222033f1db996fd6ce28ce3685edc8b17793b0b",
      "parents": [
        "2492268472e7d326a6fe10f92f9211c4578f2482"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:19 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "SLUB: use list_for_each_entry for loops over all slabs\n\nUse list_for_each_entry() instead of list_for_each().\n\nGet rid of for_all_slabs(). It had only one user. So fold it into the\ncallback. This also gets rid of cpu_slab_flush.\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": "2492268472e7d326a6fe10f92f9211c4578f2482",
      "tree": "5f668469190b96bc0db13f836d774ae73cf385ca",
      "parents": [
        "8e1f936b73150f5095448a0fee6d4f30a1f9001d"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Tue Jul 17 04:03:18 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:01 2007 -0700"
      },
      "message": "SLUB: change error reporting format to follow lockdep loosely\n\nChanges the error reporting format to loosely follow lockdep.\n\nIf data corruption is detected then we generate the following lines:\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\nBUG \u003cslab-cache\u003e: \u003cproblem\u003e\n--------------------------------------------\n\nINFO: \u003cmore information\u003e [possibly multiple times]\n\n\u003cobject dump\u003e\n\nFIX \u003cslab-cache\u003e: \u003cremedial action\u003e\n\nThis also adds some more intelligence to the data corruption detection. Its\nnow capable of figuring out the start and end.\n\nAdd a comment on how to configure SLUB so that a production system may\ncontinue to operate even though occasional slab corruption occur through\na misbehaving kernel component. See \"Emergency operations\" in\nDocumentation/vm/slub.txt.\n\n[akpm@linux-foundation.org: build fix]\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": "8e1f936b73150f5095448a0fee6d4f30a1f9001d",
      "tree": "0996203e35c629e2ec243d128c7bd91ecd74d24a",
      "parents": [
        "5ad333eb66ff1e52a87639822ae088577669dcf9"
      ],
      "author": {
        "name": "Rusty Russell",
        "email": "rusty@rustcorp.com.au",
        "time": "Tue Jul 17 04:03:17 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:23:00 2007 -0700"
      },
      "message": "mm: clean up and kernelify shrinker registration\n\nI can never remember what the function to register to receive VM pressure\nis called.  I have to trace down from __alloc_pages() to find it.\n\nIt\u0027s called \"set_shrinker()\", and it needs Your Help.\n\n1) Don\u0027t hide struct shrinker.  It contains no magic.\n2) Don\u0027t allocate \"struct shrinker\".  It\u0027s not helpful.\n3) Call them \"register_shrinker\" and \"unregister_shrinker\".\n4) Call the function \"shrink\" not \"shrinker\".\n5) Reduce the 17 lines of waffly comments to 13, but document it properly.\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: David Chinner \u003cdgc@sgi.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "5ad333eb66ff1e52a87639822ae088577669dcf9",
      "tree": "addae6bbd19585f19328f309924d06d647e8f2b7",
      "parents": [
        "7e63efef857575320fb413fbc3d0ee704b72845f"
      ],
      "author": {
        "name": "Andy Whitcroft",
        "email": "apw@shadowen.org",
        "time": "Tue Jul 17 04:03:16 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:22:59 2007 -0700"
      },
      "message": "Lumpy Reclaim V4\n\nWhen we are out of memory of a suitable size we enter reclaim.  The current\nreclaim algorithm targets pages in LRU order, which is great for fairness at\norder-0 but highly unsuitable if you desire pages at higher orders.  To get\npages of higher order we must shoot down a very high proportion of memory;\n\u003e95% in a lot of cases.\n\nThis patch set adds a lumpy reclaim algorithm to the allocator.  It targets\ngroups of pages at the specified order anchored at the end of the active and\ninactive lists.  This encourages groups of pages at the requested orders to\nmove from active to inactive, and active to free lists.  This behaviour is\nonly triggered out of direct reclaim when higher order pages have been\nrequested.\n\nThis patch set is particularly effective when utilised with an\nanti-fragmentation scheme which groups pages of similar reclaimability\ntogether.\n\nThis patch set is based on Peter Zijlstra\u0027s lumpy reclaim V2 patch which forms\nthe foundation.  Credit to Mel Gorman for sanitity checking.\n\nMel said:\n\n  The patches have an application with hugepage pool resizing.\n\n  When lumpy-reclaim is used used with ZONE_MOVABLE, the hugepages pool can\n  be resized with greater reliability.  Testing on a desktop machine with 2GB\n  of RAM showed that growing the hugepage pool with ZONE_MOVABLE on it\u0027s own\n  was very slow as the success rate was quite low.  Without lumpy-reclaim,\n  each attempt to grow the pool by 100 pages would yield 1 or 2 hugepages.\n  With lumpy-reclaim, getting 40 to 70 hugepages on each attempt was typical.\n\n[akpm@osdl.org: ia64 pfn_to_nid fixes and loop cleanup]\n[bunk@stusta.de: static declarations for internal functions]\n[a.p.zijlstra@chello.nl: initial lumpy V2 implementation]\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Bob Picco \u003cbob.picco@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": "7e63efef857575320fb413fbc3d0ee704b72845f",
      "tree": "ce33c10e5f5d9ea16b0e6944d6994b1f9cc22040",
      "parents": [
        "ed7ed365172e27b0efe9d43cc962723c7193e34e"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Tue Jul 17 04:03:15 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:22:59 2007 -0700"
      },
      "message": "Add a movablecore\u003d parameter for sizing ZONE_MOVABLE\n\nThis patch adds a new parameter for sizing ZONE_MOVABLE called\nmovablecore\u003d.  While kernelcore\u003d is used to specify the minimum amount of\nmemory that must be available for all allocation types, movablecore\u003d is\nused to specify the minimum amount of memory that is used for migratable\nallocations.  The amount of memory used for migratable allocations\ndetermines how large the huge page pool could be dynamically resized to at\nruntime for example.\n\nHow movablecore is actually handled is that the total number of pages in\nthe system is calculated and a value is set for kernelcore that is\n\nkernelcore \u003d\u003d totalpages - movablecore\n\nBoth kernelcore\u003d and movablecore\u003d can be safely specified at the same time.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ed7ed365172e27b0efe9d43cc962723c7193e34e",
      "tree": "6c22daf6908f92c64aae2b425e6383fe0ed404ac",
      "parents": [
        "396faf0303d273219db5d7eb4a2879ad977ed185"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Tue Jul 17 04:03:14 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:22:59 2007 -0700"
      },
      "message": "handle kernelcore\u003d: generic\n\nThis patch adds the kernelcore\u003d parameter for x86.\n\nOnce all patches are applied, a new command-line parameter exist and a new\nsysctl.  This patch adds the necessary documentation.\n\nFrom: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\n\n  When \"kernelcore\" boot option is specified, kernel can\u0027t boot up on ia64\n  because of an infinite loop.  In addition, the parsing code can be handled\n  in an architecture-independent manner.\n\n  This patch uses common code to handle the kernelcore\u003d parameter.  It is\n  only available to architectures that support arch-independent zone-sizing\n  (i.e.  define CONFIG_ARCH_POPULATES_NODE_MAP).  Other architectures will\n  ignore the boot parameter.\n\n[bunk@stusta.de: make cmdline_parse_kernelcore() static]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nAcked-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "396faf0303d273219db5d7eb4a2879ad977ed185",
      "tree": "96cb64fd6713ef7a924f4f878e259aea781f079a",
      "parents": [
        "2a1e274acf0b1c192face19a4be7c12d4503eaaf"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Tue Jul 17 04:03:13 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:22:59 2007 -0700"
      },
      "message": "Allow huge page allocations to use GFP_HIGH_MOVABLE\n\nHuge pages are not movable so are not allocated from ZONE_MOVABLE.  However,\nas ZONE_MOVABLE will always have pages that can be migrated or reclaimed, it\ncan be used to satisfy hugepage allocations even when the system has been\nrunning a long time.  This allows an administrator to resize the hugepage pool\nat runtime depending on the size of ZONE_MOVABLE.\n\nThis patch adds a new sysctl called hugepages_treat_as_movable.  When a\nnon-zero value is written to it, future allocations for the huge page pool\nwill use ZONE_MOVABLE.  Despite huge pages being non-movable, we do not\nintroduce additional external fragmentation of note as huge pages are always\nthe largest contiguous block we care about.\n\n[akpm@linux-foundation.org: various fixes]\nSigned-off-by: 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": "2a1e274acf0b1c192face19a4be7c12d4503eaaf",
      "tree": "f7e98e1fe19d38bb10bf178fb8f8ed1789b659b2",
      "parents": [
        "769848c03895b63e5662eb7e4ec8c4866f7d0183"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Tue Jul 17 04:03:12 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:22:59 2007 -0700"
      },
      "message": "Create the ZONE_MOVABLE zone\n\nThe following 8 patches against 2.6.20-mm2 create a zone called ZONE_MOVABLE\nthat is only usable by allocations that specify both __GFP_HIGHMEM and\n__GFP_MOVABLE.  This has the effect of keeping all non-movable pages within a\nsingle memory partition while allowing movable allocations to be satisfied\nfrom either partition.  The patches may be applied with the list-based\nanti-fragmentation patches that groups pages together based on mobility.\n\nThe size of the zone is determined by a kernelcore\u003d parameter specified at\nboot-time.  This specifies how much memory is usable by non-movable\nallocations and the remainder is used for ZONE_MOVABLE.  Any range of pages\nwithin ZONE_MOVABLE can be released by migrating the pages or by reclaiming.\n\nWhen selecting a zone to take pages from for ZONE_MOVABLE, there are two\nthings to consider.  First, only memory from the highest populated zone is\nused for ZONE_MOVABLE.  On the x86, this is probably going to be ZONE_HIGHMEM\nbut it would be ZONE_DMA on ppc64 or possibly ZONE_DMA32 on x86_64.  Second,\nthe amount of memory usable by the kernel will be spread evenly throughout\nNUMA nodes where possible.  If the nodes are not of equal size, the amount of\nmemory usable by the kernel on some nodes may be greater than others.\n\nBy default, the zone is not as useful for hugetlb allocations because they are\npinned and non-migratable (currently at least).  A sysctl is provided that\nallows huge pages to be allocated from that zone.  This means that the huge\npage pool can be resized to the size of ZONE_MOVABLE during the lifetime of\nthe system assuming that pages are not mlocked.  Despite huge pages being\nnon-movable, we do not introduce additional external fragmentation of note as\nhuge pages are always the largest contiguous block we care about.\n\nCredit goes to Andy Whitcroft for catching a large variety of problems during\nreview of the patches.\n\nThis patch creates an additional zone, ZONE_MOVABLE.  This zone is only usable\nby allocations which specify both __GFP_HIGHMEM and __GFP_MOVABLE.  Hot-added\nmemory continues to be placed in their existing destination as there is no\nmechanism to redirect them to a specific zone.\n\n[y-goto@jp.fujitsu.com: Fix section mismatch of memory hotplug related code]\n[akpm@linux-foundation.org: various fixes]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: William Lee Irwin III \u003cwli@holomorphy.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "769848c03895b63e5662eb7e4ec8c4866f7d0183",
      "tree": "8911c7c312c8b8b172795fa2874c8162e1d3d15a",
      "parents": [
        "a32ea1e1f925399e0d81ca3f7394a44a6dafa12c"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Tue Jul 17 04:03:05 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:22:59 2007 -0700"
      },
      "message": "Add __GFP_MOVABLE for callers to flag allocations from high memory that may be migrated\n\nIt is often known at allocation time whether a page may be migrated or not.\nThis patch adds a flag called __GFP_MOVABLE and a new mask called\nGFP_HIGH_MOVABLE.  Allocations using the __GFP_MOVABLE can be either migrated\nusing the page migration mechanism or reclaimed by syncing with backing\nstorage and discarding.\n\nAn API function very similar to alloc_zeroed_user_highpage() is added for\n__GFP_MOVABLE allocations called alloc_zeroed_user_highpage_movable().  The\nflags used by alloc_zeroed_user_highpage() are not changed because it would\nchange the semantics of an existing API.  After this patch is applied there\nare no in-kernel users of alloc_zeroed_user_highpage() so it probably should\nbe marked deprecated if this patch is merged.\n\nNote that this patch includes a minor cleanup to the use of __GFP_ZERO in\nshmem.c to keep all flag modifications to inode-\u003emapping in the\nshmem_dir_alloc() helper function.  This clean-up suggestion is courtesy of\nHugh Dickens.\n\nAdditional credit goes to Christoph Lameter and Linus Torvalds for shaping the\nconcept.  Credit to Hugh Dickens for catching issues with shmem swap vector\nand ramfs allocations.\n\n[akpm@linux-foundation.org: build fix]\n[hugh@veritas.com: __GFP_ZERO cleanup]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\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": "a32ea1e1f925399e0d81ca3f7394a44a6dafa12c",
      "tree": "fade44f4d7baf5695a856ad73e6b98f0d6edf9de",
      "parents": [
        "e21ea246bce5bb93dd822de420172ec280aed492"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jul 17 04:03:04 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Jul 17 10:22:59 2007 -0700"
      },
      "message": "Fix read/truncate race\n\ndo_generic_mapping_read currently samples the i_size at the start and doesn\u0027t\ndo so again unless it needs to call -\u003ereadpage to load a page.  After\n-\u003ereadpage it has to re-sample i_size as a truncate may have caused that page\nto be filled with zeros, and the read() call should not see these.\n\nHowever there are other activities that might cause -\u003ereadpage to be called on\na page between the time that do_generic_mapping_read samples i_size and when\nit finds that it has an uptodate page.  These include at least read-ahead and\npossibly another thread performing a read.\n\nSo do_generic_mapping_read must sample i_size *after* it has an uptodate page.\n Thus the current sampling at the start and after a read can be replaced with\na sampling before the copy-out.\n\nThe same change applied to __generic_file_splice_read.\n\nNote that this fixes any race with truncate_complete_page, but does not fix a\npossible race with truncate_partial_page.  If a partial truncate happens after\ndo_generic_mapping_read samples i_size and before the copy_out, the nuls that\ntruncate_partial_page place in the page could be copied out incorrectly.\n\nI think the best fix for that is to *not* zero out parts of the page in\ntruncate_partial_page, but rather to zero out the tail of a page when\nincreasing i_size.\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nAcked-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": "489de30259e667d7bc47da9da44a0270b050cd97",
      "tree": "6807814f443fe2c5d041c3bc3fe3ca8d22a955ca",
      "parents": [
        "1f1c2881f673671539b25686df463518d69c4649",
        "bf22f6fe2d72b4d7e9035be8ceb340414cf490e3"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 17:58:08 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 17:58:08 2007 -0700"
      },
      "message": "Merge branch \u0027merge\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc\n\n* \u0027merge\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (209 commits)\n  [POWERPC] Create add_rtc() function to enable the RTC CMOS driver\n  [POWERPC] Add H_ILLAN_ATTRIBUTES hcall number\n  [POWERPC] xilinxfb: Parameterize xilinxfb platform device registration\n  [POWERPC] Oprofile support for Power 5++\n  [POWERPC] Enable arbitary speed tty ioctls and split input/output speed\n  [POWERPC] Make drivers/char/hvc_console.c:khvcd() static\n  [POWERPC] Remove dead code for preventing pread() and pwrite() calls\n  [POWERPC] Remove unnecessary #undef printk from prom.c\n  [POWERPC] Fix typo in Ebony default DTS\n  [POWERPC] Check for NULL ppc_md.init_IRQ() before calling\n  [POWERPC] Remove extra return statement\n  [POWERPC] pasemi: Don\u0027t auto-select CONFIG_EMBEDDED\n  [POWERPC] pasemi: Rename platform\n  [POWERPC] arch/powerpc/kernel/sysfs.c: Move NUMA exports\n  [POWERPC] Add __read_mostly support for powerpc\n  [POWERPC] Modify sched_clock() to make CONFIG_PRINTK_TIME more sane\n  [POWERPC] Create a dummy zImage if no valid platform has been selected\n  [POWERPC] PS3: Bootwrapper support.\n  [POWERPC] powermac i2c: Use mutex\n  [POWERPC] Schedule removal of arch/ppc\n  ...\n\nFixed up conflicts manually in:\n\n\tDocumentation/feature-removal-schedule.txt\n\tarch/powerpc/kernel/pci_32.c\n\tarch/powerpc/kernel/pci_64.c\n\tinclude/asm-powerpc/pci.h\n\nand asked the powerpc people to double-check the result..\n"
    },
    {
      "commit": "b91cba52e9b7b3f1c0037908a192d93a869ca9e5",
      "tree": "bbce7f323c8f52b308af5a152673a75b3e445360",
      "parents": [
        "98283bb49c6c8c070ebde9f47489d3e9a83c1323",
        "e509ac4bbc661052dc73a2e8138800ba77d4ecb9"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 10:32:02 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 10:32:02 2007 -0700"
      },
      "message": "Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6\n\n* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: (68 commits)\n  sh: sh-rtc support for SH7709.\n  sh: Revert __xdiv64_32 size change.\n  sh: Update r7785rp defconfig.\n  sh: Export div symbols for GCC 4.2 and ST GCC.\n  sh: fix race in parallel out-of-tree build\n  sh: Kill off dead mach.c for hp6xx.\n  sh: hd64461.h cleanup and added comments.\n  sh: Update the alignment when 4K stacks are used.\n  sh: Add a .bss.page_aligned section for 4K stacks.\n  sh: Don\u0027t let SH-4A clobber SH-4 CFLAGS.\n  sh: Add parport stub for SuperIO ports.\n  sh: Drop -Wa,-dsp for DSP tuning.\n  sh: Update dreamcast defconfig.\n  fb: pvr2fb: A few more __devinit annotations for PCI.\n  fb: pvr2fb: Fix up section mismatch warnings.\n  sh: Select IPR-IRQ for SH7091.\n  sh: Correct __xdiv64_32/div64_32 return value size.\n  sh: Fix timer-tmu build for SH-3.\n  sh: Add cpu and mach links to CLEAN_FILES.\n  sh: Preliminary support for the SH-X3 CPU.\n  ...\n"
    },
    {
      "commit": "c80e7a826c10cf5bce8487fbaede48bd0bd48d08",
      "tree": "90a8f4dd0c936eacab217a183a9ff311ad259a32",
      "parents": [
        "5e70030d4cf91613530a23b40ad9919bb9ee114f"
      ],
      "author": {
        "name": "Rusty Russell",
        "email": "rusty@rustcorp.com.au",
        "time": "Sun Jul 15 23:42:00 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:52 2007 -0700"
      },
      "message": "permit mempool_free(NULL)\n\nChristian Borntraeger points out that mempool_free() doesn\u0027t noop when\nhanded NULL.  This is inconsistent with the other free-like functions\nin the kernel.\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: Christian Borntraeger \u003cborntraeger@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": "8f8a68ee486e1c81eaead3c521822bf86142d380",
      "tree": "8435b491a52ea22918f621892970536957352fa0",
      "parents": [
        "1492192b4a0bb84dd9b792cc0bd30583220a28a7"
      ],
      "author": {
        "name": "Adrian Bunk",
        "email": "bunk@stusta.de",
        "time": "Sun Jul 15 23:41:52 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:52 2007 -0700"
      },
      "message": "remove mm/backing-dev.c:congestion_wait_interruptible()\n\ncongestion_wait_interruptible() is no longer used.\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nAcked-by: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "3e733f071e16bdad13a75eedb102e8941b09927e",
      "tree": "4c3be61c45b6b7a5943b4680a27b42aacf951b00",
      "parents": [
        "97842216b8400fe9d1a20468959e2989180f8f79"
      ],
      "author": {
        "name": "Andrew Morton",
        "email": "akpm@linux-foundation.org",
        "time": "Sun Jul 15 23:41:05 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:47 2007 -0700"
      },
      "message": "dirty_writeback_centisecs_handler() cleanup\n\nRepair indenting bustage.\n\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "54114994f4de7e8076fc250e44501e55e19b75b5",
      "tree": "b0b0c2b5c3cf1c0daa7c6db7911c42dcf912f181",
      "parents": [
        "203a2935c734c054bfd4665fb5d8835498af50a8"
      ],
      "author": {
        "name": "Akinobu Mita",
        "email": "akinobu.mita@gmail.com",
        "time": "Sun Jul 15 23:40:23 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:45 2007 -0700"
      },
      "message": "fault-injection: add min-order parameter to fail_page_alloc\n\nLimiting smaller allocation failures by fault injection helps to find real\npossible bugs.  Because higher order allocations are likely to fail and\nzero-order allocations are not likely to fail.\n\nThis patch adds min-order parameter to fail_page_alloc.  It specifies the\nminimum page allocation order to be injected failures.\n\nSigned-off-by: Akinobu Mita \u003cakinobu.mita@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": "17973f5af741f1758ed57c5115ca394c22bee159",
      "tree": "0fd340e46f1fbae4ab7aa8d06b26af208a3e83f4",
      "parents": [
        "1e3e8d91fee56e1ab598b265466dc38033f1b915"
      ],
      "author": {
        "name": "Micah Cowan",
        "email": "micah@cowan.name",
        "time": "Sun Jul 15 23:40:08 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:43 2007 -0700"
      },
      "message": "Only send SIGXFSZ when exceeding rlimits.\n\nSome users have been having problems with utilities like cp or dd dumping\ncore when they try to copy a file that\u0027s too large for the destination\nfilesystem (typically, \u003e 4gb).  Apparently, some defunct standards required\nSIGXFSZ to be sent in such circumstances, but SUS only requires/allows it\nfor when a written file exceeds the process\u0027s resource limits.  I\u0027d like to\nlimit SIGXFSZs to the bare minimum required by SUS.\n\nPatch sent per http://lkml.org/lkml/2007/4/10/302\n\nSigned-off-by: Micah Cowan \u003cmicahcowan@ubuntu.com\u003e\nAcked-by: Alan Cox \u003calan@redhat.com\u003e\nCc: \u003creiserfs-dev@namesys.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "f057eac0d7ad967138390a9dd7fd8267e1e39d19",
      "tree": "96e951adb2934ee4495edda09f94c67c02fcf5ab",
      "parents": [
        "693783817a79d8619335e2bf1a33de73cf189864"
      ],
      "author": {
        "name": "Stephen Rothwell",
        "email": "sfr@canb.auug.org.au",
        "time": "Sun Jul 15 23:40:05 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:42 2007 -0700"
      },
      "message": "Introduce CONFIG_VIRT_TO_BUS\n\nMake some offending drivers depend on it and set CONFIG_ARCH_NO_VIRT_TO_BUS\nfor ppc64 so that we don\u0027t build those drivers.\n\nThis gets PowerPC allmodconfig and allyesconfig much closer to building.\n\nSigned-off-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nCc: Al Viro \u003cviro@ftp.linux.org.uk\u003e\nAcked-by: David 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": "57c8f63e8e7a4a95d7fcc49e3953341fb4039899",
      "tree": "cf0bd22654e4aff40c5d11775e949aba558922df",
      "parents": [
        "54a3bdd76e82d7f64e5504409c55b51e48c3a10a"
      ],
      "author": {
        "name": "Greg Ungerer",
        "email": "gerg@snapgear.com",
        "time": "Sun Jul 15 23:38:28 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:37 2007 -0700"
      },
      "message": "nommu: stub expand_stack() for nommu case\n\nBe consistent with VM mmap, implement expand_stack().  We can\u0027t actually do\nanything other than return an error in the no MMU case though.\n\nSigned-off-by: Greg Ungerer \u003cgerg@uclinux.org\u003e\nCc: 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": "0165ab443556bdfad388da6c33d74a71b77d72b2",
      "tree": "c2449128f60ebed846b7d63633ccee3f88949a1c",
      "parents": [
        "c44939ecb6e05aeaaf12d4e1bb046719c97e457e"
      ],
      "author": {
        "name": "Miklos Szeredi",
        "email": "mszeredi@suse.cz",
        "time": "Sun Jul 15 23:38:26 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:37 2007 -0700"
      },
      "message": "split mmap\n\nThis is a straightforward split of do_mmap_pgoff() into two functions:\n\n - do_mmap_pgoff() checks the parameters, and calculates the vma\n   flags.  Then it calls\n\n - mmap_region(), which does the actual mapping\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "c44939ecb6e05aeaaf12d4e1bb046719c97e457e",
      "tree": "5bf1bc2c4c518fb89271110a0e9fbb43d6f4c413",
      "parents": [
        "5ed44a401ddfc60e11c3484e86f0c8285051139a"
      ],
      "author": {
        "name": "akpm@linux-foundation.org",
        "email": "akpm@linux-foundation.org",
        "time": "Sun Jul 15 23:38:25 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:37 2007 -0700"
      },
      "message": "NeilBrown \u003cneilb@suse.de\u003e\n\nThe do_loop_readv_writev implementation of readv breaks out of the loop as\nsoon as a single read request didn\u0027t fill it\u0027s buffer:\n\n\t\tif (nr !\u003d len)\n\t\t\tbreak;\n\nThe generic_file_aio_read version doesn\u0027t.  So if it hits EOF before the end\nof the list of buffers, it will try again on the next buffer.  If the file was\nextended in the mean time, this will produce a bad result.\n\nSigned-off-by: Neil Brown \u003cneilb@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": "5ed44a401ddfc60e11c3484e86f0c8285051139a",
      "tree": "96a44aac2853fc38aac801b3b628fb58adada2fb",
      "parents": [
        "84a01c2f8ea9bf210b961c6301e8e870a46505a6"
      ],
      "author": {
        "name": "Herbert van den Bergh",
        "email": "Herbert.van.den.Bergh@oracle.com",
        "time": "Sun Jul 15 23:38:25 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:37 2007 -0700"
      },
      "message": "do not limit locked memory when RLIMIT_MEMLOCK is RLIM_INFINITY\n\nFix a bug in mm/mlock.c on 32-bit architectures that prevents a user from\nlocking more than 4GB of shared memory, or allocating more than 4GB of\nshared memory in hugepages, when rlim[RLIMIT_MEMLOCK] is set to\nRLIM_INFINITY.\n\nSigned-off-by: Herbert van den Bergh \u003cherbert.van.den.bergh@oracle.com\u003e\nAcked-by: Chris Mason \u003cchris.mason@oracle.com\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": "84a01c2f8ea9bf210b961c6301e8e870a46505a6",
      "tree": "cf61ff3302d5bfa339f1449bc3302eded09349fd",
      "parents": [
        "5dc4ac6324094cd52dc77ddf88296a94b90bbafc"
      ],
      "author": {
        "name": "Paul Mundt",
        "email": "lethal@linux-sh.org",
        "time": "Sun Jul 15 23:38:24 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:36 2007 -0700"
      },
      "message": "slob: sparsemem support\n\nCurrently slob is disabled if we\u0027re using sparsemem, due to an earlier\npatch from Goto-san.  Slob and static sparsemem work without any trouble as\nit is, and the only hiccup is a missing slab_is_available() in the case of\nsparsemem extreme.  With this, we\u0027re rid of the last set of restrictions\nfor slob usage.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nAcked-by: Matt Mackall \u003cmpm@selenic.com\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": "b49ad484c54116862d717ffafcab1c9a46600b48",
      "tree": "d081db8e0026022d13cc08a6c594c9471c74e1d4",
      "parents": [
        "6193a2ff180920f84ee06977165ebf32431fc2d2"
      ],
      "author": {
        "name": "Dan Aloni",
        "email": "da-x@monatomic.org",
        "time": "Sun Jul 15 23:38:23 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:36 2007 -0700"
      },
      "message": "mm/page_alloc.c: lower printk severity\n\nSigned-off-by: Dan Aloni \u003cda-x@monatomic.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "6193a2ff180920f84ee06977165ebf32431fc2d2",
      "tree": "d3c6423c50463ea741080a58a2e654cf103431f3",
      "parents": [
        "f7977793240d836e60ff413e94e6914f08e10941"
      ],
      "author": {
        "name": "Paul Mundt",
        "email": "lethal@linux-sh.org",
        "time": "Sun Jul 15 23:38:22 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:36 2007 -0700"
      },
      "message": "slob: initial NUMA support\n\nThis adds preliminary NUMA support to SLOB, primarily aimed at systems with\nsmall nodes (tested all the way down to a 128kB SRAM block), whether\nasymmetric or otherwise.\n\nWe follow the same conventions as SLAB/SLUB, preferring current node\nplacement for new pages, or with explicit placement, if a node has been\nspecified.  Presently on UP NUMA this has the side-effect of preferring\nnode#0 allocations (since numa_node_id() \u003d\u003d 0, though this could be\nreworked if we could hand off a pfn to determine node placement), so\nsingle-CPU NUMA systems will want to place smaller nodes further out in\nterms of node id.  Once a page has been bound to a node (via explicit node\nid typing), we only do block allocations from partial free pages that have\na matching node id in the page flags.\n\nThe current implementation does have some scalability problems, in that all\npartial free pages are tracked in the global freelist (with contention due\nto the single spinlock).  However, these are things that are being reworked\nfor SMP scalability first, while things like per-node freelists can easily\nbe built on top of this sort of functionality once it\u0027s been added.\n\nMore background can be found in:\n\n\thttp://marc.info/?l\u003dlinux-mm\u0026m\u003d118117916022379\u0026w\u003d2\n\thttp://marc.info/?l\u003dlinux-mm\u0026m\u003d118170446306199\u0026w\u003d2\n\thttp://marc.info/?l\u003dlinux-mm\u0026m\u003d118187859420048\u0026w\u003d2\n\nand subsequent threads.\n\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Matt Mackall \u003cmpm@selenic.com\u003e\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nAcked-by: 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": "f7977793240d836e60ff413e94e6914f08e10941",
      "tree": "75955844a77b70c02aa44982d27ca17ceb702cf3",
      "parents": [
        "897e679b17460b52752a038af29db356fe1bd759"
      ],
      "author": {
        "name": "Jason Baron",
        "email": "jbaron@redhat.com",
        "time": "Sun Jul 15 23:38:21 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:36 2007 -0700"
      },
      "message": "speed up madvise_need_mmap_write() usage\n\nIn the new madvise_need_mmap_write() call we can avoid an extra case\nstatement and function call as follows.\n\nSigned-off-by: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Nishanth Aravamudan \u003cnacc@us.ibm.com\u003e\nCc: Christoph Hellwig \u003chch@lst.de\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": "897e679b17460b52752a038af29db356fe1bd759",
      "tree": "9b921ff267dabfbc662e4d245e6bc86a52a6f5ce",
      "parents": [
        "6ea6e6887dad1fd44e6d5020a0fd355af4f2b6b3"
      ],
      "author": {
        "name": "Adrian Bunk",
        "email": "bunk@stusta.de",
        "time": "Sun Jul 15 23:38:20 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:36 2007 -0700"
      },
      "message": "mm/slab.c: start_cpu_timer() should be __cpuinit\n\nstart_cpu_timer() should be __cpuinit (which also matches what it\u0027s\ncallers are).\n\n__devinit didn\u0027t cause problems, it simply wasted a few bytes of memory\nfor the common CONFIG_HOTPLUG_CPU\u003dn case.\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "6ea6e6887dad1fd44e6d5020a0fd355af4f2b6b3",
      "tree": "184e6c217acd1013b60f439bb7cb8b400525ca43",
      "parents": [
        "8f0accc8627043702e6ea2bb8b9aa3a171ef8393"
      ],
      "author": {
        "name": "Paul Mundt",
        "email": "lethal@linux-sh.org",
        "time": "Sun Jul 15 23:38:20 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:36 2007 -0700"
      },
      "message": "mm: more __meminit annotations\n\nCurrently zone_spanned_pages_in_node() and zone_absent_pages_in_node() are\nnon-static for ARCH_POPULATES_NODE_MAP and static otherwise.  However, only\nthe non-static versions are __meminit annotated, despite only being called\nfrom __meminit functions in either case.\n\nzone_init_free_lists() is currently non-static and not __meminit annotated\neither, despite only being called once in the entire tree by\ninit_currently_empty_zone(), which too is __meminit.  So make it static and\nproperly annotated.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\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": "8f0accc8627043702e6ea2bb8b9aa3a171ef8393",
      "tree": "94aaf1cdf099c7e875231b1d9575727b8e14f7f2",
      "parents": [
        "45e98cdb6d365b34b7a2d849e4d8bdc264d8e6e4"
      ],
      "author": {
        "name": "Jan Beulich",
        "email": "jbeulich@novell.com",
        "time": "Sun Jul 15 23:38:19 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:36 2007 -0700"
      },
      "message": "kill vmalloc_earlyreserve\n\nThis symbol got orphaned quite a while ago.\n\nSigned-off-by: Jan Beulich \u003cjbeulich@novell.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "98011f569e2ae1e4ae394f6e23faa16676d50de4",
      "tree": "6cde069a3fd943c36d4029b21d8b7ad4c24811f6",
      "parents": [
        "140d5a49046b6d73dce4a4229e88c000a99ee126"
      ],
      "author": {
        "name": "Jan Beulich",
        "email": "jbeulich@novell.com",
        "time": "Sun Jul 15 23:38:17 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:36 2007 -0700"
      },
      "message": "mm: fix improper .init-type section references\n\n.. which modpost started warning about.\n\nSigned-off-by: Jan Beulich \u003cjbeulich@novell.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "140d5a49046b6d73dce4a4229e88c000a99ee126",
      "tree": "64dcfe28ef6f5ccee5a2722e5c332c66ded29e28",
      "parents": [
        "462e00cc7151ed91fba688594436c453c80efb5d"
      ],
      "author": {
        "name": "Paul Mundt",
        "email": "lethal@linux-sh.org",
        "time": "Sun Jul 15 23:38:16 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:36 2007 -0700"
      },
      "message": "numa: mempolicy: trivial debug fixes.\n\nEnabling debugging fails to build due to the nodemask variable in\ndo_mbind() having changed names, and then oopses on boot due to the\nassumption that the nodemask can be dereferenced -- which doesn\u0027t work out\nso well when the policy is changed to MPOL_DEFAULT with a NULL nodemask by\nnuma_default_policy().\n\nThis fixes it up, and switches from PDprintk() to pr_debug() while\nwe\u0027re at it.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\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": "462e00cc7151ed91fba688594436c453c80efb5d",
      "tree": "bf648899ba65f9eb000e9c8163a61c1cb1be9bfe",
      "parents": [
        "b71636e29823c0602d908a2a62e94c9b57a97491"
      ],
      "author": {
        "name": "Ethan Solomita",
        "email": "solo@google.com",
        "time": "Sun Jul 15 23:38:16 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:36 2007 -0700"
      },
      "message": "oom: stop allocating user memory if TIF_MEMDIE is set\n\nget_user_pages() can try to allocate a nearly unlimited amount of memory on\nbehalf of a user process, even if that process has been OOM killed.  The\nOOM kill occurs upon return to user space via a SIGKILL, but\nget_user_pages() will try allocate all its memory before returning.  Change\nget_user_pages() to check for TIF_MEMDIE, and if set then return\nimmediately.\n\nSigned-off-by: Ethan Solomita \u003csolo@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": "b71636e29823c0602d908a2a62e94c9b57a97491",
      "tree": "d69a20eec2cc05bcd9b0dac2b9d4ccd9bad39e09",
      "parents": [
        "f0630fff54a239efbbd89faf6a62da071ef1ff78"
      ],
      "author": {
        "name": "Paul Mundt",
        "email": "lethal@linux-sh.org",
        "time": "Sun Jul 15 23:38:15 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:36 2007 -0700"
      },
      "message": "numa: mempolicy: dynamic interleave map for system init\n\nThis converts the default system init memory policy to use a dynamically\ncreated node map instead of defaulting to all online nodes.  Nodes of a\ncertain size (\u003e\u003d 16MB) are judged to be suitable for interleave, and are added\nto the map.  If all nodes are smaller in size, the largest one is\nautomatically selected.\n\nWithout this, tiny nodes find themselves out of memory before we even make it\nto userspace.  Systems with large nodes will notice no change.\n\nOnly the system init policy is effected by this change, the regular\nMPOL_DEFAULT policy is still switched to later on in the boot process as\nnormal.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@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": "f0630fff54a239efbbd89faf6a62da071ef1ff78",
      "tree": "4004adc3adf4dbe1a6188ca0bbd56f7606d4d05f",
      "parents": [
        "fc9a07e7bf1a76e710f5df017abb07628db1781d"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Sun Jul 15 23:38:14 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:36 2007 -0700"
      },
      "message": "SLUB: support slub_debug on by default\n\nAdd a new configuration variable\n\nCONFIG_SLUB_DEBUG_ON\n\nIf set then the kernel will be booted by default with slab debugging\nswitched on. Similar to CONFIG_SLAB_DEBUG. By default slab debugging\nis available but must be enabled by specifying \"slub_debug\" as a\nkernel parameter.\n\nAlso add support to switch off slab debugging for a kernel that was\nbuilt with CONFIG_SLUB_DEBUG_ON. This works by specifying\n\nslub_debug\u003d-\n\nas a kernel parameter.\n\nDave Jones wanted this feature.\nhttp://marc.info/?l\u003dlinux-kernel\u0026m\u003d118072189913045\u0026w\u003d2\n\n[akpm@linux-foundation.org: clean up switch statement]\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": "fc9a07e7bf1a76e710f5df017abb07628db1781d",
      "tree": "bf2a288f97cbf9cfd82a4306a7d9c615abc7c887",
      "parents": [
        "45426812d6b601430d560cb6049757b5b0bc71c4"
      ],
      "author": {
        "name": "Andrew Morton",
        "email": "akpm@linux-foundation.org",
        "time": "Sun Jul 15 23:38:14 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:36 2007 -0700"
      },
      "message": "invalidate_mapping_pages(): add cond_resched\n\ninvalidate_mapping_pages() can sometimes take a long time (millions of pages\nto free).  Long enough for the softlockup detector to trigger.\n\nWe used to have a cond_resched() in there but I took it out because the\ndrop_caches code calls invalidate_mapping_pages() under inode_lock.\n\nThe patch adds a nasty flag and puts the cond_resched() back.\n\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "45426812d6b601430d560cb6049757b5b0bc71c4",
      "tree": "64c8439a53f4ca402a9d7deb2a455aa0de08c8ea",
      "parents": [
        "f96efd585b8d847181f81bf16721f96ded18d9fe"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Sun Jul 15 23:38:12 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:35 2007 -0700"
      },
      "message": "mm: debug check for the fault vs invalidate race\n\nAdd a bugcheck for Andrea\u0027s pagefault vs invalidate race.  This is triggerable\nfor both linear and nonlinear pages with a userspace test harness (using\ndirect IO and truncate, respectively).\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": "f96efd585b8d847181f81bf16721f96ded18d9fe",
      "tree": "10821321b4f501e3126606ef2b54eb356ec8ef77",
      "parents": [
        "2706a1b89b1a3e7434a668d4a9d15f616da96685"
      ],
      "author": {
        "name": "Joe Jin",
        "email": "joe.jin@oracle.com",
        "time": "Sun Jul 15 23:38:12 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Jul 16 09:05:35 2007 -0700"
      },
      "message": "hugetlb: fix race in alloc_fresh_huge_page()\n\nThat static `nid\u0027 index needs locking.  Without it we can end up calling\nalloc_pages_node() with an illegal node ID and the kernel crashes.\n\nAcked-by: gurudas pai \u003cgurudas.pai@oracle.com\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"
    }
  ],
  "next": "2706a1b89b1a3e7434a668d4a9d15f616da96685"
}