)]}' { "log": [ { "commit": "12d6f21eacc21d84a809829543f2fe45c7e37319", "tree": "6985f2370ad238fb2a568547a5049751d7c95a69", "parents": [ "9a3dc7804e9856668caef41efc54179e61ffccc0" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:33:58 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:33:58 2008 +0100" }, "message": "x86: do not PSE on CONFIG_DEBUG_PAGEALLOC\u003dy\n\nget more testing of the c_p_a() code done by not turning off\nPSE on DEBUG_PAGEALLOC.\n\nthis simplifies the early pagetable setup code, and tests\nthe largepage-splitup code quite heavily.\n\nIn the end, all the largepages will be split up pretty quickly,\nso there\u0027s no difference to how DEBUG_PAGEALLOC worked before.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "03252919b79891063cf99145612360efbdf9500b", "tree": "a80dc0c89448308d75d247446a5a04c84cb708a6", "parents": [ "d3432896dae72ee97deb850ad7bbc30329d32c0d" ], "author": { "name": "Andi Kleen", "email": "ak@suse.de", "time": "Wed Jan 30 13:33:18 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:33:18 2008 +0100" }, "message": "x86: print which shared library/executable faulted in segfault etc. messages v3\n\nThey now look like:\n\nhal-resmgr[13791]: segfault at 3c rip 2b9c8caec182 rsp 7fff1e825d30 error 4 in libacl.so.1.1.0[2b9c8caea000+6000]\n\nThis makes it easier to pinpoint bugs to specific libraries.\n\nAnd printing the offset into a mapping also always allows to find the\ncorrect fault point in a library even with randomized mappings. Previously\nthere was no way to actually find the correct code address inside\nthe randomized mapping.\n\nRelies on earlier patch to shorten the printk formats.\n\nThey are often now longer than 80 characters, but I think that\u0027s worth it.\n\n[includes fix from Eric Dumazet to check d_path error value]\n\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "42d7896ebc5f7268b1fe6bbd20f2282e20ae7895", "tree": "98247e79ea997801420bcb594c66f351a14bce75", "parents": [ "88c3f7a8f2c86be264d326cf6f49a3e8c30d13a6" ], "author": { "name": "James Morris", "email": "jmorris@sdv.(none)", "time": "Wed Dec 26 15:12:37 2007 +1100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Fri Jan 25 11:29:49 2008 +1100" }, "message": "Security: remove security.h include from mm.h\n\nRemove security.h include from mm.h, as it is only needed for a single\nextern declaration, and pulls in all kinds of crud.\n\nFine-by-me: David Chinner \u003cdgc@sgi.com\u003e\nAcked-by: Eric Paris \u003ceparis@redhat.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "7cd94146cd504016315608e297219f9fb7b1413b", "tree": "1d118d6af0a6d3efb9be66f7305827aee2ceffea", "parents": [ "8869477a49c3e99def1fcdadd6bbc407fea14b45" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Mon Nov 26 18:47:40 2007 -0500" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Thu Dec 06 00:25:10 2007 +1100" }, "message": "Security: round mmap hint address above mmap_min_addr\n\nIf mmap_min_addr is set and a process attempts to mmap (not fixed) with a\nnon-null hint address less than mmap_min_addr the mapping will fail the\nsecurity checks. Since this is just a hint address this patch will round\nsuch a hint address above mmap_min_addr.\n\ngcj was found to try to be very frugal with vm usage and give hint addresses\nin the 8k-32k range. Without this patch all such programs failed and with\nthe patch they happily get a higher address.\n\nThis patch is wrappad in CONFIG_SECURITY since mmap_min_addr doesn\u0027t exist\nwithout it and there would be no security check possible no matter what. So\nwe should not bother compiling in this rounding if it is just a waste of\ntime.\n\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "4af3c9cc4fad54c3627e9afebf905aafde5690ed", "tree": "655364e458b8734a86c632316f4b5a1518529c60", "parents": [ "1a614f505193fcfc1b298643268a5db5b48e297f" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Tue Oct 16 23:29:23 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:55 2007 -0700" }, "message": "Drop some headers from mm.h\n\nmm.h doesn\u0027t use directly anything from mutex.h and backing-dev.h, so\nremove them and add them back to files which need them.\n\nCross-compile tested on many configs and archs.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@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": "d8dc74f212c38407fc9f4367181f8f969b719485", "tree": "2ff1ec0aaee1e6b3ee29d258a7158deb4b43688c", "parents": [ "af767cbdd78f293485c294113885d95e7f1da123" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue Oct 16 01:26:26 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:03 2007 -0700" }, "message": "mm/shmem.c: make 3 functions static\n\nThis patch makes three needlessly global functions static.\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "98f3cfc1dc7a53b629d43b7844a9b3f786213048", "tree": "de98ff0e3c25b01863c31abc0f3054de978b9ef8", "parents": [ "48e94196a533dbee17c252bf80d0310fb8c8c2eb" ], "author": { "name": "Yasunori Goto", "email": "y-goto@jp.fujitsu.com", "time": "Tue Oct 16 01:26:14 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:02 2007 -0700" }, "message": "memory hotplug: Hot-add with sparsemem-vmemmap\n\nThis patch is to avoid panic when memory hot-add is executed with\nsparsemem-vmemmap. Current vmemmap-sparsemem code doesn\u0027t support memory\nhot-add. Vmemmap must be populated when hot-add. This is for\n2.6.23-rc2-mm2.\n\nTodo: # Even if this patch is applied, the message \"[xxxx-xxxx] potential\n offnode page_structs\" is displayed. To allocate memmap on its node,\n memmap (and pgdat) must be initialized itself like chicken and\n egg relationship.\n\n # vmemmap_unpopulate will be necessary for followings.\n - For cancel hot-add due to error.\n - For unplug.\n\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8e65d24c7caf2a4c69b3ae0ce170bf3082ba359f", "tree": "4f690448c1363bf02f74abd9293126c3e3a9e4c9", "parents": [ "dfb4f09609827301740ef0a11b37530d190f1681" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:26:06 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:01 2007 -0700" }, "message": "SLUB: Do not use page-\u003emapping\n\nAfter moving the lockless_freelist to kmem_cache_cpu we no longer need\npage-\u003elockless_freelist. Restructure the use of the struct page fields in\nsuch a way that we never touch the mapping field.\n\nThis is turn allows us to remove the special casing of SLUB when determining\nthe mapping of a page (needed for corner cases of virtual caches machines that\nneed to flush caches of processors mapping a page).\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": "c92ff1bde06f69d59b40f3194016aee51cc5da55", "tree": "d365a7723a05a073ed715c6f4e99363e27516d04", "parents": [ "c0bc9875b701c588e448302d41181995c21e8040" ], "author": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Tue Oct 16 01:24:43 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:53 2007 -0700" }, "message": "move mm_struct and vm_area_struct\n\nMove the definitions of struct mm_struct and struct vma_area_struct to\ninclude/mm_types.h. This allows to define more function in asm/pgtable.h\nand friends with inline assemblies instead of macros. Compile tested on\ni386, powerpc, powerpc64, s390-32, s390-64 and x86_64.\n\n[aurelien@aurel32.net: build fix]\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Aurelien Jarno \u003caurelien@aurel32.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "557ed1fa2620dc119adb86b34c614e152a629a80", "tree": "d00b31a7f197583c2bd8fffa1fd135fbbb5d6abc", "parents": [ "aadb4bc4a1f9108c1d0fbd121827c936c2ed4217" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:40 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:53 2007 -0700" }, "message": "remove ZERO_PAGE\n\nThe commit b5810039a54e5babf428e9a1e89fc1940fabff11 contains the note\n\n A last caveat: the ZERO_PAGE is now refcounted and managed with rmap\n (and thus mapcounted and count towards shared rss). These writes to\n the struct page could cause excessive cacheline bouncing on big\n systems. There are a number of ways this could be addressed if it is\n an issue.\n\nAnd indeed this cacheline bouncing has shown up on large SGI systems.\nThere was a situation where an Altix system was essentially livelocked\ntearing down ZERO_PAGE pagetables when an HPC app aborted during startup.\nThis situation can be avoided in userspace, but it does highlight the\npotential scalability problem with refcounting ZERO_PAGE, and corner\ncases where it can really hurt (we don\u0027t want the system to livelock!).\n\nThere are several broad ways to fix this problem:\n1. add back some special casing to avoid refcounting ZERO_PAGE\n2. per-node or per-cpu ZERO_PAGES\n3. remove the ZERO_PAGE completely\n\nI will argue for 3. The others should also fix the problem, but they\nresult in more complex code than does 3, with little or no real benefit\nthat I can see.\n\nWhy? Inserting a ZERO_PAGE for anonymous read faults appears to be a\nfalse optimisation: if an application is performance critical, it would\nnot be doing many read faults of new memory, or at least it could be\nexpected to write to that memory soon afterwards. If cache or memory use\nis critical, it should not be working with a significant number of\nZERO_PAGEs anyway (a more compact representation of zeroes should be\nused).\n\nAs a sanity check -- mesuring on my desktop system, there are never many\nmappings to the ZERO_PAGE (eg. 2 or 3), thus memory usage here should not\nincrease much without it.\n\nWhen running a make -j4 kernel compile on my dual core system, there are\nabout 1,000 mappings to the ZERO_PAGE created per second, but about 1,000\nZERO_PAGE COW faults per second (less than 1 ZERO_PAGE mapping per second\nis torn down without being COWed). So removing ZERO_PAGE will save 1,000\npage faults per second when running kbuild, while keeping it only saves\nless than 1 page clearing operation per second. 1 page clear is cheaper\nthan a thousand faults, presumably, so there isn\u0027t an obvious loss.\n\nNeither the logical argument nor these basic tests give a guarantee of no\nregressions. However, this is a reasonable opportunity to try to remove\nthe ZERO_PAGE from the pagefault path. If it is found to cause regressions,\nwe can reintroduce it and just avoid refcounting it.\n\nThe /dev/zero ZERO_PAGE usage and TLB tricks also get nuked. I don\u0027t see\nmuch use to them except on benchmarks. All other users of ZERO_PAGE are\nconverted just to use ZERO_PAGE(0) for simplicity. We can look at\nreplacing them all and maybe ripping out ZERO_PAGE completely when we are\nmore satisfied with this solution.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus \"snif\" Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "535443f51543df61111bbd234300ae549d220448", "tree": "e9b022969776132b9fd3bde351673edc006a1bac", "parents": [ "7ff81078d8b9f3d05a27b7bd3786ffb1ef1b0d1f" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:36 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:52 2007 -0700" }, "message": "readahead: remove several readahead macros\n\nRemove VM_MAX_CACHE_HIT, MAX_RA_PAGES and MIN_RA_PAGES.\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": "29c71111d0557385328211b130246a90f9223b46", "tree": "5588a49ee548d38e15bd7541cec29e069b9e457c", "parents": [ "8f6aac419bd590f535fb110875a51f7db2b62b5b" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Tue Oct 16 01:24:14 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:51 2007 -0700" }, "message": "vmemmap: generify initialisation via helpers\n\nConvert the common vmemmap population into initialisation helpers for use by\narchitecture vmemmap populators. All architecture implementing the\nSPARSEMEM_VMEMMAP variant supply an architecture specific vmemmap_populate()\ninitialiser, which may make use of the helpers.\n\nThis allows us to clean up and remove the initialisation Kconfig entries.\nWith this patch there is a single SPARSEMEM_VMEMMAP_ENABLE Kconfig option to\nindicate use of that variant.\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\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": "8f6aac419bd590f535fb110875a51f7db2b62b5b", "tree": "64e73e9f7a4b5a68648a2b4b16e66307c3d8d3cf", "parents": [ "540557b9439ec19668553830c90222f9fb0c2e95" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 01:24:13 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:51 2007 -0700" }, "message": "Generic Virtual Memmap support for SPARSEMEM\n\nSPARSEMEM is a pretty nice framework that unifies quite a bit of code over all\nthe arches. It would be great if it could be the default so that we can get\nrid of various forms of DISCONTIG and other variations on memory maps. So far\nwhat has hindered this are the additional lookups that SPARSEMEM introduces\nfor virt_to_page and page_address. This goes so far that the code to do this\nhas to be kept in a separate function and cannot be used inline.\n\nThis patch introduces a virtual memmap mode for SPARSEMEM, in which the memmap\nis mapped into a virtually contigious area, only the active sections are\nphysically backed. This allows virt_to_page page_address and cohorts become\nsimple shift/add operations. No page flag fields, no table lookups, nothing\ninvolving memory is required.\n\nThe two key operations pfn_to_page and page_to_page become:\n\n #define __pfn_to_page(pfn) (vmemmap + (pfn))\n #define __page_to_pfn(page) ((page) - vmemmap)\n\nBy having a virtual mapping for the memmap we allow simple access without\nwasting physical memory. As kernel memory is typically already mapped 1:1\nthis introduces no additional overhead. The virtual mapping must be big\nenough to allow a struct page to be allocated and mapped for all valid\nphysical pages. This vill make a virtual memmap difficult to use on 32 bit\nplatforms that support 36 address bits.\n\nHowever, if there is enough virtual space available and the arch already maps\nits 1-1 kernel space using TLBs (f.e. true of IA64 and x86_64) then this\ntechnique makes SPARSEMEM lookups even more efficient than CONFIG_FLATMEM.\nFLATMEM needs to read the contents of the mem_map variable to get the start of\nthe memmap and then add the offset to the required entry. vmemmap is a\nconstant to which we can simply add the offset.\n\nThis patch has the potential to allow us to make SPARSMEM the default (and\neven the only) option for most systems. It should be optimal on UP, SMP and\nNUMA on most platforms. Then we may even be able to remove the other memory\nmodels: FLATMEM, DISCONTIG etc.\n\n[apw@shadowen.org: config cleanups, resplit code etc]\n[kamezawa.hiroyu@jp.fujitsu.com: Fix sparsemem_vmemmap init]\n[apw@shadowen.org: vmemmap: remove excess debugging]\n[apw@shadowen.org: simplify initialisation code and reduce duplication]\n[apw@shadowen.org: pull out the vmemmap code into its own file]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-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": "34b4e4aa3c470ce8fa2bd78abb1741b4b58baad7", "tree": "91d620288f1aaf63c12dc84ca1015465818601f2", "parents": [ "afe1ab4d577892822de2c8e803fbfaed6ec44ba3" ], "author": { "name": "Alan Cox", "email": "alan@lxorguk.ukuu.org.uk", "time": "Wed Aug 22 14:01:28 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Aug 22 19:52:45 2007 -0700" }, "message": "fix NULL pointer dereference in __vm_enough_memory()\n\nThe new exec code inserts an accounted vma into an mm struct which is not\ncurrent-\u003emm. The existing memory check code has a hard coded assumption\nthat this does not happen as does the security code.\n\nAs the correct mm is known we pass the mm to the security method and the\nhelper function. A new security test is added for the case where we need\nto pass the mm and the existing one is modified to pass current-\u003emm to\navoid the need to change large amounts of code.\n\n(Thanks to Tobias for fixing rejects and testing)\n\nSigned-off-by: Alan Cox \u003calan@redhat.com\u003e\nCc: WU Fengguang \u003cwfg@mail.ustc.edu.cn\u003e\nCc: James Morris \u003cjmorris@redhat.com\u003e\nCc: Tobias Diedrich \u003cranma+kernel@tdiedrich.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4e950f6f0189f65f8bf069cf2272649ef418f5e4", "tree": "95710bedf2a5aa3b61002f3399e0950192fdd504", "parents": [ "673d5b43daa00b42759cecc6b0760b8bf6be80d2" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Mon Jul 30 02:36:13 2007 +0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Jul 29 17:09:29 2007 -0700" }, "message": "Remove fs.h from mm.h\n\nRemove fs.h from mm.h. For this,\n 1) Uninline vma_wants_writenotify(). It\u0027s pretty huge anyway.\n 2) Add back fs.h or less bloated headers (err.h) to files that need it.\n\nAs result, on x86_64 allyesconfig, fs.h dependencies cut down from 3929 files\nrebuilt down to 3444 (-12.3%).\n\nCross-compile tested without regressions on my two usual configs and (sigh):\n\nalpha arm-mx1ads mips-bigsur powerpc-ebony\nalpha-allnoconfig arm-neponset mips-capcella powerpc-g5\nalpha-defconfig arm-netwinder mips-cobalt powerpc-holly\nalpha-up arm-netx mips-db1000 powerpc-iseries\narm arm-ns9xxx mips-db1100 powerpc-linkstation\narm-assabet arm-omap_h2_1610 mips-db1200 powerpc-lite5200\narm-at91rm9200dk arm-onearm mips-db1500 powerpc-maple\narm-at91rm9200ek arm-picotux200 mips-db1550 powerpc-mpc7448_hpc2\narm-at91sam9260ek arm-pleb mips-ddb5477 powerpc-mpc8272_ads\narm-at91sam9261ek arm-pnx4008 mips-decstation powerpc-mpc8313_rdb\narm-at91sam9263ek arm-pxa255-idp mips-e55 powerpc-mpc832x_mds\narm-at91sam9rlek arm-realview mips-emma2rh powerpc-mpc832x_rdb\narm-ateb9200 arm-realview-smp mips-excite powerpc-mpc834x_itx\narm-badge4 arm-rpc mips-fulong powerpc-mpc834x_itxgp\narm-carmeva arm-s3c2410 mips-ip22 powerpc-mpc834x_mds\narm-cerfcube arm-shannon mips-ip27 powerpc-mpc836x_mds\narm-clps7500 arm-shark mips-ip32 powerpc-mpc8540_ads\narm-collie arm-simpad mips-jazz powerpc-mpc8544_ds\narm-corgi arm-spitz mips-jmr3927 powerpc-mpc8560_ads\narm-csb337 arm-trizeps4 mips-malta powerpc-mpc8568mds\narm-csb637 arm-versatile mips-mipssim powerpc-mpc85xx_cds\narm-ebsa110 i386 mips-mpc30x powerpc-mpc8641_hpcn\narm-edb7211 i386-allnoconfig mips-msp71xx powerpc-mpc866_ads\narm-em_x270 i386-defconfig mips-ocelot powerpc-mpc885_ads\narm-ep93xx i386-up mips-pb1100 powerpc-pasemi\narm-footbridge ia64 mips-pb1500 powerpc-pmac32\narm-fortunet ia64-allnoconfig mips-pb1550 powerpc-ppc64\narm-h3600 ia64-bigsur mips-pnx8550-jbs powerpc-prpmc2800\narm-h7201 ia64-defconfig mips-pnx8550-stb810 powerpc-ps3\narm-h7202 ia64-gensparse mips-qemu powerpc-pseries\narm-hackkit ia64-sim mips-rbhma4200 powerpc-up\narm-integrator ia64-sn2 mips-rbhma4500 s390\narm-iop13xx ia64-tiger mips-rm200 s390-allnoconfig\narm-iop32x ia64-up mips-sb1250-swarm s390-defconfig\narm-iop33x ia64-zx1 mips-sead s390-up\narm-ixp2000 m68k mips-tb0219 sparc\narm-ixp23xx m68k-amiga mips-tb0226 sparc-allnoconfig\narm-ixp4xx m68k-apollo mips-tb0287 sparc-defconfig\narm-jornada720 m68k-atari mips-workpad sparc-up\narm-kafa m68k-bvme6000 mips-wrppmc sparc64\narm-kb9202 m68k-hp300 mips-yosemite sparc64-allnoconfig\narm-ks8695 m68k-mac parisc sparc64-defconfig\narm-lart m68k-mvme147 parisc-allnoconfig sparc64-up\narm-lpd270 m68k-mvme16x parisc-defconfig um-x86_64\narm-lpd7a400 m68k-q40 parisc-up x86_64\narm-lpd7a404 m68k-sun3 powerpc x86_64-allnoconfig\narm-lubbock m68k-sun3x powerpc-cell x86_64-defconfig\narm-lusl7200 mips powerpc-celleb x86_64-up\narm-mainstone mips-atlas powerpc-chrp32\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "045e72acf16054c4ed2760e9a8edb19a08053af1", "tree": "225e037554493e61e26b8c208740ffcb86fac89e", "parents": [ "2ebc3cc920e7a076539aa8badbaf0919540a3438" ], "author": { "name": "Sam Ravnborg", "email": "sam@ravnborg.org", "time": "Thu Jul 26 10:41:13 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 26 11:35:18 2007 -0700" }, "message": "fix \u0027dynreloc miscount\u0027 link error on Powerpc\n\nNathan Lynch \u003cntl@pobox.com\u003e reported:\n2.6.23-rc1 breaks the build for 64-bit powerpc for me (using\nmaple_defconfig):\n\n LD vmlinux.o\npowerpc64-unknown-linux-gnu-ld: dynreloc miscount for\nkernel/built-in.o, section .opd\npowerpc64-unknown-linux-gnu-ld: can not edit opd Bad value\nmake: *** [vmlinux.o] Error 1\n\nHowever, I see a possibly related binutils patch:\nhttp://article.gmane.org/gmane.comp.gnu.binutils/33650\n\nIt was tracked down to be caused by the weak prototype\ndeclaration in mm.h:\n__attribute__((weak)) const char *arch_vma_name(struct vm_area_struct *vma);\n\nBut there is no need to make the declaration weak - only the definition\nneeds to be marked weak. So drop the weak declaration. And in the process\ndrop the duplicate definition in page.h for powerpc.\n\nNote: the arch_vma_name fix for x86_64 needs to be applied first to avoid\nbreaking x86_64\n\nSigned-off-by: Sam Ravnborg \u003csam@ravnborg.org\u003e\nCc: Nathan Lynch \u003cntl@pobox.com\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\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": "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": "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": "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": "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": "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": "b5fab14e5d87df4d94161ae5f5e0c8625f9ffda2", "tree": "80e206d025be3823797924a8ea8b70c56a6deab9", "parents": [ "a0acd820807680d2ccc4ef3448387fcdbf152c73" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.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": "Add VM_BUG_ON in case someone uses page_mapping on a slab page\n\nDetect slab objects being passed to the page oriented functions of the VM.\n\nIt is not sufficient to simply return NULL because the functions calling\npage_mapping may depend on other items of the page_struct also to be setup\nproperly. Moreover slab object may not be properly aligned. The page\noriented functions of the VM expect to operate on page aligned, page sized\nobjects. Operations on object straddling page boundaries may only affect the\nobjects partially which may lead to surprising results.\n\nIt is better to detect eventually remaining uses and eliminate them.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "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": "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": "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": "aa0ac36518be648dda3a32f0b37a8b2b546e1b24", "tree": "b37eac59221187c4dec9ce8445a21c4119d425fb", "parents": [ "cb510b8172602a66467f3551b4be1911f5a7c8c2" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Sun Jul 15 23:40:39 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:45 2007 -0700" }, "message": "Remove capability.h from mm.h\n\nI forgot to remove capability.h from mm.h while removing sched.h! This\npatch remedies that, because the only inline function which was using\nCAP_something was made out of line.\n\nCross-compile tested without regressions on:\n\n\tall powerpc defconfigs\n\tall mips defconfigs\n\tall m68k defconfigs\n\tall arm defconfigs\n\tall ia64 defconfigs\n\n\talpha alpha-allnoconfig alpha-defconfig alpha-up\n\tarm\n\ti386 i386-allnoconfig i386-defconfig i386-up\n\tia64 ia64-allnoconfig ia64-defconfig ia64-up\n\tm68k\n\tmips\n\tparisc parisc-allnoconfig parisc-defconfig parisc-up\n\tpowerpc powerpc-up\n\ts390 s390-allnoconfig s390-defconfig s390-up\n\tsparc sparc-allnoconfig sparc-defconfig sparc-up\n\tsparc64 sparc64-allnoconfig sparc64-defconfig sparc64-up\n\tum-x86_64\n\tx86_64 x86_64-allnoconfig x86_64-defconfig x86_64-up\n\nas well as my two usual configs.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@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": "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": "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": "b9bae3402572dc50a1e084c5b1ae5117918ef0f0", "tree": "b351181fffd09e06c0b3f185a0571cdb2860e870", "parents": [ "f1518a088bde6aea49e7c472ed6ab96178fcba3e" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Thu Jun 21 23:27:45 2007 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jun 21 15:55:12 2007 -0700" }, "message": "page_mapping must avoid slub pages\n\nNicolas Ferre reports oops from flush_dcache_page() on ARM when using\nSLUB: which reuses page-\u003emapping as page-\u003eslab. The page_mapping()\nfunction, used by ARM and PA-RISC flush_dcache_page() implementations,\nmust not confuse SLUB pages with those which have page-\u003emapping set.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nicolas Ferre \u003cnicolas.ferre@rfo.atmel.com\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": "e8edc6e03a5c8562dc70a6d969f732bdb355a7e7", "tree": "fc86c863655128a7041dfe613d14393d761fa7b9", "parents": [ "ff1be9ad61e3e17ba83702d8ed0b534e5b8ee15c" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Mon May 21 01:22:52 2007 +0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 21 09:18:19 2007 -0700" }, "message": "Detach sched.h from mm.h\n\nFirst thing mm.h does is including sched.h solely for can_do_mlock() inline\nfunction which has \"current\" dereference inside. By dealing with can_do_mlock()\nmm.h can be detached from sched.h which is good. See below, why.\n\nThis patch\na) removes unconditional inclusion of sched.h from mm.h\nb) makes can_do_mlock() normal function in mm/mlock.c\nc) exports can_do_mlock() to not break compilation\nd) adds sched.h inclusions back to files that were getting it indirectly.\ne) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were\n getting them indirectly\n\nNet result is:\na) mm.h users would get less code to open, read, preprocess, parse, ... if\n they don\u0027t need sched.h\nb) sched.h stops being dependency for significant number of files:\n on x86_64 allmodconfig touching sched.h results in recompile of 4083 files,\n after patch it\u0027s only 3744 (-8.3%).\n\nCross-compile tested on\n\n\tall arm defconfigs, all mips defconfigs, all powerpc defconfigs,\n\talpha alpha-up\n\tarm\n\ti386 i386-up i386-defconfig i386-allnoconfig\n\tia64 ia64-up\n\tm68k\n\tmips\n\tparisc parisc-up\n\tpowerpc powerpc-up\n\ts390 s390-up\n\tsparc sparc-up\n\tsparc64 sparc64-up\n\tum-x86_64\n\tx86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig\n\nas well as my two usual configs.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b49af68ff9fc5d6e0d96704a1843968b91cc73c6", "tree": "eb5e6d9425a9069cdfc45b09a1d0f61f1419d2c2", "parents": [ "6d7779538f765963ced45a3fa4bed7ba8d2c277d" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun May 06 14:49:41 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:54 2007 -0700" }, "message": "Add virt_to_head_page and consolidate code in slab and slub\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": "6d7779538f765963ced45a3fa4bed7ba8d2c277d", "tree": "07d47e6ff1ab30309004e2ba0674dcabd83945c1", "parents": [ "d85f33855c303acfa87fa457157cef755b6087df" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun May 06 14:49:40 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:53 2007 -0700" }, "message": "mm: optimize compound_head() by avoiding a shared page flag\n\nThe patch adds PageTail(page) and PageHead(page) to check if a page is the\nhead or the tail of a compound page. This is done by masking the two bits\ndescribing the state of a compound page and then comparing them. So one\ncomparision and a branch instead of two bit checks and two branches.\n\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d85f33855c303acfa87fa457157cef755b6087df", "tree": "f1184a1a24b432727b0399594ede37c7539db888", "parents": [ "30520864839dc796fd314812e7036e754880b47d" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun May 06 14:49:39 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:53 2007 -0700" }, "message": "Make page-\u003eprivate usable in compound pages\n\nIf we add a new flag so that we can distinguish between the first page and the\ntail pages then we can avoid to use page-\u003eprivate in the first page.\npage-\u003eprivate \u003d\u003d page for the first page, so there is no real information in\nthere.\n\nFreeing up page-\u003eprivate makes the use of compound pages more transparent.\nThey become more usable like real pages. Right now we have to be careful f.e.\n if we are going beyond PAGE_SIZE allocations in the slab on i386 because we\ncan then no longer use the private field. This is one of the issues that\ncause us not to support debugging for page size slabs in SLAB.\n\nHaving page-\u003eprivate available for SLUB would allow more meta information in\nthe page struct. I can probably avoid the 16 bit ints that I have in there\nright now.\n\nAlso if page-\u003eprivate is available then a compound page may be equipped with\nbuffer heads. This may free up the way for filesystems to support larger\nblocks than page size.\n\nWe add PageTail as an alias of PageReclaim. Compound pages cannot currently\nbe reclaimed. Because of the alias one needs to check PageCompound first.\n\nThe RFC for the this approach was discussed at\nhttp://marc.info/?t\u003d117574302800001\u0026r\u003d1\u0026w\u003d2\n\n[nacc@us.ibm.com: fix hugetlbfs]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Nishanth Aravamudan \u003cnacc@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": "5f22df00a009e3f86301366c0ecddb63ebd22af9", "tree": "72f0ea3e114dbb6825fc7e73f828645d364ea520", "parents": [ "d2ba27e8007b35d24764c0877ab2428e00a5c5ab" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sun May 06 14:49:02 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:51 2007 -0700" }, "message": "mm: remove gcc workaround\n\nMinimum gcc version is 3.2 now. However, with likely profiling, even\nmodern gcc versions cannot always eliminate the call.\n\nReplace the placeholder functions with the more conventional empty static\ninlines, which should be optimal for everyone.\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": "aee16b3cee2746880e40945a9b5bff4f309cfbc4", "tree": "887faaebf5562dc1fac5e090140da04dc7e2a174", "parents": [ "eb3a1e1145ca8f12372c7c96aa0702d86a9002a9" ], "author": { "name": "Jeremy Fitzhardinge", "email": "jeremy@goop.org", "time": "Sun May 06 14:48:54 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:51 2007 -0700" }, "message": "Add apply_to_page_range() which applies a function to a pte range\n\nAdd a new mm function apply_to_page_range() which applies a given function to\nevery pte in a given virtual address range in a given mm structure. This is a\ngeneric alternative to cut-and-pasting the Linux idiomatic pagetable walking\ncode in every place that a sequence of PTEs must be accessed.\n\nAlthough this interface is intended to be useful in a wide range of\nsituations, it is currently used specifically by several Xen subsystems, for\nexample: to ensure that pagetables have been allocated for a virtual address\nrange, and to construct batched special pagetable update requests to map I/O\nmemory (in ioremap()).\n\n[akpm@linux-foundation.org: fix warning, unpleasantly]\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\nSigned-off-by: Jeremy Fitzhardinge \u003cjeremy@xensource.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Matt Mackall \u003cmpm@waste.org\u003e\nAcked-by: 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": "9b83a6a8523a8a96b6353174b193c5c93e16c6c3", "tree": "33bfdc0e1794b3970b7454d746b20c177037765a", "parents": [ "de01bad2f5dec2977143aa242e7eba71d11a4363" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Wed Feb 28 20:11:03 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Mar 01 14:53:35 2007 -0800" }, "message": "[PATCH] mm/{,tiny-}shmem.c cleanups\n\nshmem_{nopage,mmap} are no longer used in ipc/shm.c\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "22cd25ed31bbf849acaa06ab220dc4f526153f13", "tree": "bffc0fa86b3734d89afb3eccb19249663de34ce2", "parents": [ "e0dc0d8f4a327d033bfb63d43f113d5f31d11b3c" ], "author": { "name": "Benjamin Herrenschmidt", "email": "benh@kernel.crashing.org", "time": "Mon Feb 12 00:51:38 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Feb 12 09:48:27 2007 -0800" }, "message": "[PATCH] Add NOPFN_REFAULT result from vm_ops-\u003enopfn()\n\nAdd a NOPFN_REFAULT return code for vm_ops-\u003enopfn() equivalent to\nNOPAGE_REFAULT for vmops-\u003enopage() indicating that the handler requests a\nre-execution of the faulting instruction\n\nSigned-off-by: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Arnd Bergmann \u003carnd.bergmann@de.ibm.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e0dc0d8f4a327d033bfb63d43f113d5f31d11b3c", "tree": "7af435f3caacd18eef6e30577e61d62e0afbe4d2", "parents": [ "2ca48ed5cc5935cbd2a6f5d14fecd4ddbbdb4315" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Mon Feb 12 00:51:36 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Feb 12 09:48:27 2007 -0800" }, "message": "[PATCH] add vm_insert_pfn()\n\nAdd a vm_insert_pfn helper, so that -\u003efault handlers can have nopfn\nfunctionality by installing their own pte and returning NULL.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Arnd Bergmann \u003carnd.bergmann@de.ibm.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "767193253bbac889e176f90b6f17b7015f986551", "tree": "a81c5c90d14c7892e6d7adb0432f4dff4ca3f906", "parents": [ "bd8029b66069d29fd02c304599411ca9bb7fa38c" ], "author": { "name": "Ken Chen", "email": "kenchen@google.com", "time": "Sat Feb 10 01:43:15 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:19 2007 -0800" }, "message": "[PATCH] simplify shmem_aops.set_page_dirty() method\n\nshmem backed file does not have page writeback, nor it participates in\nbacking device\u0027s dirty or writeback accounting. So using generic\n__set_page_dirty_nobuffers() for its .set_page_dirty aops method is a bit\noverkill. It unnecessarily prolongs shm unmap latency.\n\nFor example, on a densely populated large shm segment (sevearl GBs), the\nunmapping operation becomes painfully long. Because at unmap, kernel\ntransfers dirty bit in PTE into page struct and to the radix tree tag. The\noperation of tagging the radix tree is particularly expensive because it\nhas to traverse the tree from the root to the leaf node on every dirty\npage. What\u0027s bothering is that radix tree tag is used for page write back.\n However, shmem is memory backed and there is no page write back for such\nfile system. And in the end, we spend all that time tagging radix tree and\nnone of that fancy tagging will be used. So let\u0027s simplify it by introduce\na new aops __set_page_dirty_no_writeback and this will speed up shm unmap.\n\nSigned-off-by: Ken Chen \u003ckenchen@google.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bd8029b66069d29fd02c304599411ca9bb7fa38c", "tree": "2b4088813f060afc40c00ac668c2c3d183e156ad", "parents": [ "5ac6da669e2476dbdac89b357b05b5a79bc5b657" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Sat Feb 10 01:43:14 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:19 2007 -0800" }, "message": "[PATCH] zoneid: fix up calculations for ZONEID_PGSHIFT\n\nCurrently if we have a non-zero ZONES_SHIFT we assume we are able to rely\non that as the bottom edge of the ZONEID, if not then we use the\nNODES_PGOFF as the right end of either NODES _or_ SECTION. This latter is\nmore luck than judgement and would be incorrect if we reordered the\nSECTION,NODE,ZONE options in the fields space.\n\nReally what we want is the lower of the right hand end of the two fields we\nare using (either NODE,ZONE or SECTION,ZONE). Codify that explicitly. As\nalways allow for there being no bits in either of the fields, such as might\nbe valid in a non-numa machine with only a zone NORMAL.\n\nI have checked that the compiler is still able to constant fold all of this\naway correctly.\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\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": "fa5dc22f8586cc3742413dd05f5cd9e039dfab9e", "tree": "39a97d91e25794f64e3cc03f1d4a8fa2c8ad78d2", "parents": [ "a25700a53f715fde30443e737e52310c6d4a311a" ], "author": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Thu Feb 08 14:20:41 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 09 09:25:47 2007 -0800" }, "message": "[PATCH] Add install_special_mapping\n\nThis patch adds a utility function install_special_mapping, for creating a\nspecial vma using a fixed set of preallocated pages as backing, such as for a\nvDSO. This consolidates some nearly identical code used for vDSO mapping\nreimplemented for different architectures.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e5b97dde514f9bd43f9e525451d0a863c4fc8a9a", "tree": "e1096d4446c5dab878b50b7001cd58ab9ce5fa45", "parents": [ "b6558c4a2378af06f2beca6c8a3304e21d1cf135" ], "author": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Fri Jan 26 00:56:48 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jan 26 13:50:58 2007 -0800" }, "message": "[PATCH] Add VM_ALWAYSDUMP\n\nThis patch adds the VM_ALWAYSDUMP flag for vm_flags in vm_area_struct. This\nprovides a clean explicit way to have a vma always included in core dumps, as\nis needed for vDSO\u0027s.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a2f3aa02576632cdb60bd3de1f4bf55e9ac65604", "tree": "2b9b73675de73866fbd219fab5bf2d804e6817b1", "parents": [ "47a4d5be7c50b2e9b905abbe2b97dc87051c5a44" ], "author": { "name": "Dave Hansen", "email": "haveblue@us.ibm.com", "time": "Wed Jan 10 23:15:30 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Jan 11 18:18:20 2007 -0800" }, "message": "[PATCH] Fix sparsemem on Cell\n\nFix an oops experienced on the Cell architecture when init-time functions,\nearly_*(), are called at runtime. It alters the call paths to make sure\nthat the callers explicitly say whether the call is being made on behalf of\na hotplug even, or happening at boot-time.\n\nIt has been compile tested on ppc64, ia64, s390, i386 and x86_64.\n\nAcked-by: Arnd Bergmann \u003carndb@de.ibm.com\u003e\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nAcked-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nAcked-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "33f2ef89f8e181486b63fdbdc97c6afa6ca9f34b", "tree": "b90eac24ff367bc628c44eaa51a9f0ea1b69d1a4", "parents": [ "3c517a6132098ca37e122a2980fc64a9e798b0d7" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Wed Dec 06 20:33:32 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:25 2006 -0800" }, "message": "[PATCH] mm: make compound page destructor handling explicit\n\nCurrently we we use the lru head link of the second page of a compound page\nto hold its destructor. This was ok when it was purely an internal\nimplmentation detail. However, hugetlbfs overrides this destructor\nviolating the layering. Abstract this out as explicit calls, also\nintroduce a type for the callback function allowing them to be type\nchecked. For each callback we pre-declare the function, causing a type\nerror on definition rather than on use elsewhere.\n\n[akpm@osdl.org: cleanups]\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "25ba77c141dbcd2602dd0171824d0d72aa023a01", "tree": "153eb9bc567f63d739dcaf8a3caf11c8f48b8379", "parents": [ "bc4ba393c007248f76c05945abb7b7b892cdd1cc" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Wed Dec 06 20:33:03 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:23 2006 -0800" }, "message": "[PATCH] numa node ids are int, page_to_nid and zone_to_nid should return int\n\nNUMA node ids are passed as either int or unsigned int almost exclusivly\npage_to_nid and zone_to_nid both return unsigned long. This is a throw\nback to when page_to_nid was a #define and was thus exposing the real type\nof the page flags field.\n\nIn addition to fixing up the definitions of page_to_nid and zone_to_nid I\naudited the users of these functions identifying the following incorrect\nuses:\n\n1) mm/page_alloc.c show_node() -- printk dumping the node id,\n2) include/asm-ia64/pgalloc.h pgtable_quicklist_free() -- comparison\n against numa_node_id() which returns an int from cpu_to_node(), and\n3) mm/mpolicy.c check_pte_range -- used as an index in node_isset which\n uses bit_set which in generic code takes an int.\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c43692e85f306667545b91194c748a6e46c1f8b4", "tree": "5a1a47c0ddeded4d4591befcd3176f50669cd322", "parents": [ "298ec1e2ac85cecce3eddd167286359358c44d5d" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Dec 06 20:32:48 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:22 2006 -0800" }, "message": "[PATCH] Move vm_area_cachep to include/mm.h\n\nvm_area_cachep is used to store vm_area_structs. So move to mm.h.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "89689ae7f95995723fbcd5c116c47933a3bb8b13", "tree": "4d73ff59b557fa1a84c6064406ff101c76ff8adc", "parents": [ "c0a499c2c42992cff097b38be29d2ba60d2fd99a" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Dec 06 20:31:45 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:20 2006 -0800" }, "message": "[PATCH] Get rid of zone_table[]\n\nThe zone table is mostly not needed. If we have a node in the page flags\nthen we can get to the zone via NODE_DATA() which is much more likely to be\nalready in the cpu cache.\n\nIn case of SMP and UP NODE_DATA() is a constant pointer which allows us to\naccess an exact replica of zonetable in the node_zones field. In all of\nthe above cases there will be no need at all for the zone table.\n\nThe only remaining case is if in a NUMA system the node numbers do not fit\ninto the page flags. In that case we make sparse generate a table that\nmaps sections to nodes and use that table to to figure out the node number.\n This table is sized to fit in a single cache line for the known 32 bit\nNUMA platform which makes it very likely that the information can be\nobtained without a cache miss.\n\nFor sparsemem the zone table seems to be have been fairly large based on\nthe maximum possible number of sections and the number of zones per node.\nThere is some memory saving by removing zone_table. The main benefit is to\nreduce the cache foootprint of the VM from the frequent lookups of zones.\nPlus it simplifies the page allocator.\n\n[akpm@osdl.org: build fix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "8ac773b4f73afa6fd66695131103944b975d5d5c", "tree": "7a3ea0d703cde009c5f2e1196d80f06cf5d00d54", "parents": [ "887b95931b4072e60e3bf4253ff7bffe372bca46" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Thu Oct 19 23:28:32 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Oct 20 10:26:38 2006 -0700" }, "message": "[PATCH] OOM killer meets userspace headers\n\nDespite mm.h is not being exported header, it does contain one thing\nwhich is part of userspace ABI -- value disabling OOM killer for given\nprocess. So,\na) create and export include/linux/oom.h\nb) move OOM_DISABLE define there.\nc) turn bounding values of /proc/$PID/oom_adj into defines and export\n them too.\n\nNote: mass __KERNEL__ removal will be done later.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: David Woodhouse \u003cdwmw2@infradead.org\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9858db504caedb2424b9a32744c23f9a81ec1731", "tree": "516b4735df82feb9b14bea4984769e7ac013373d", "parents": [ "dafb13673c463bc2aade4a4819704dde0f5fa37f" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Oct 11 01:21:30 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Oct 11 11:14:19 2006 -0700" }, "message": "[PATCH] mm: locks_freed fix\n\nMove the lock debug checks below the page reserved checks. Also, having\ndebug_check_no_locks_freed in kernel_map_pages is wrong.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "7f7bbbe50b8a28f4dfaa4cea939ddb50198c4a99", "tree": "6421bee762afd8f09c643e90860c4bdbe4dde93b", "parents": [ "1ca4cb2418c04914e4661c059cf5b7b9262c645a" ], "author": { "name": "Benjamin Herrenschmidt", "email": "benh@kernel.crashing.org", "time": "Fri Oct 06 00:43:53 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Oct 06 08:53:40 2006 -0700" }, "message": "[PATCH] page fault retry with NOPAGE_REFAULT\n\nAdd a way for a no_page() handler to request a retry of the faulting\ninstruction. It goes back to userland on page faults and just tries again\nin get_user_pages(). I added a cond_resched() in the loop in that later\ncase.\n\nThe problem I have with signal and spufs is an actual bug affecting apps and I\ndon\u0027t see other ways of fixing it.\n\nIn addition, we are having issues with infiniband and 64k pages (related to\nthe way the hypervisor deals with some HV cards) that will require us to muck\naround with the MMU from within the IB driver\u0027s no_page() (it\u0027s a pSeries\nspecific driver) and return to the caller the same way using NOPAGE_REFAULT.\n\nAnd to add to this, the graphics folks have been following a new approach of\nmemory management that involves transparently swapping objects between video\nram and main meory. To do that, they need installing PTEs from a no_page()\nhandler as well and that also requires returning with NOPAGE_REFAULT.\n\n(For the later, they are currently using io_remap_pfn_range to install one PTE\nfrom no_page() which is a bit racy, we need to add a check for the PTE having\nalready been installed afer taking the lock, but that\u0027s ok, they are only at\nthe proof-of-concept stage. I\u0027ll send a patch adding a \"clean\" function to do\nthat, we can use that from spufs too and get rid of the sparsemem hacks we do\nto create struct page for SPEs. Basically, that provides a generic solution\nfor being able to have no_page() map hardware devices, which is something that\nI think sound driver folks have been asking for some time too).\n\nAll of these things depend on having the NOPAGE_REFAULT exit path from\nno_page() handlers.\n\nSigned-off-by: Benjamin Herrenchmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f28c5edc06ecd8068b38b7662ad19f4d20d741af", "tree": "4582acbf62b7a484b62b69e3f465cf4d069f7e2a", "parents": [ "236561e5df009f79f1939e3ca269b9b6f18092f5" ], "author": { "name": "Keith Mannthey", "email": "kmannth@us.ibm.com", "time": "Sat Sep 30 23:27:04 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Oct 01 00:39:18 2006 -0700" }, "message": "[PATCH] hot-add-mem x86_64: fixup externs\n\nFix up externs in memory_hotplug.c. Cleanup.\n\nSigned-off-by: Keith Mannthey \u003ckmannth@us.ibm.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "cf9a2ae8d49948f861b56e5333530e491a9da190", "tree": "21f0b0d781b3e60cc60464d39b6d95681201b37e", "parents": [ "4090959aee403817ff386415f9bc602c1a0882ef" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Tue Aug 29 19:05:54 2006 +0100" }, "committer": { "name": "Jens Axboe", "email": "axboe@nelson.home.kernel.dk", "time": "Sat Sep 30 20:31:19 2006 +0200" }, "message": "[PATCH] BLOCK: Move functions out of buffer code [try #6]\n\nMove some functions out of the buffering code that aren\u0027t strictly buffering\nspecific. This is a precursor to being able to disable the block layer.\n\n (*) Moved some stuff out of fs/buffer.c:\n\n (*) The file sync and general sync stuff moved to fs/sync.c.\n\n (*) The superblock sync stuff moved to fs/super.c.\n\n (*) do_invalidatepage() moved to mm/truncate.c.\n\n (*) try_to_release_page() moved to mm/filemap.c.\n\n (*) Moved some related declarations between header files:\n\n (*) declarations for do_invalidatepage() and try_to_release_page() moved\n \t to linux/mm.h.\n\n (*) __set_page_dirty_buffers() moved to linux/buffer_head.h.\n\nSigned-Off-By: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Jens Axboe \u003caxboe@kernel.dk\u003e\n" }, { "commit": "f269fdd1829acc5e53bf57b145003e5733133f2b", "tree": "494fef02f26f089f14c719e9a4394a41f7b686ec", "parents": [ "930e652a21a08986b03d1f370f933057dc0db2dc" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Wed Sep 27 01:50:23 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:15 2006 -0700" }, "message": "[PATCH] NOMMU: move the fallback arch_vma_name() to a sensible place\n\nMove the fallback arch_vma_name() to a sensible place (kernel/signal.c).\n\nCurrently it\u0027s in fs/proc/task_mmu.c, a file that is dependent on both\nCONFIG_PROC_FS and CONFIG_MMU being enabled, but it\u0027s used from\nkernel/signal.c from where it is called unconditionally.\n\n[akpm@osdl.org: build fix]\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f4b81804a2d1ab341a4613089dc31ecce0800ed8", "tree": "fdad77a7c40790908546a74a9b5918400d01333d", "parents": [ "5d2923436217ba8bd05c5ee157712a391891c382" ], "author": { "name": "Jes Sorensen", "email": "jes@sgi.com", "time": "Wed Sep 27 01:50:10 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:13 2006 -0700" }, "message": "[PATCH] do_no_pfn()\n\nImplement do_no_pfn() for handling mapping of memory without a struct page\nbacking it. This avoids creating fake page table entries for regions which\nare not backed by real memory.\n\nThis feature is used by the MSPEC driver and other users, where it is\nhighly undesirable to have a struct page sitting behind the page (for\ninstance if the page is accessed in cached mode via the struct page in\nparallel to the the driver accessing it uncached, which can result in data\ncorruption on some architectures, such as ia64).\n\nThis version uses specific NOPFN_{SIGBUS,OOM} return values, rather than\nexpect all negative pfn values would be an error. It also bugs on cow\nmappings as this would not work with the VM.\n\n[akpm@osdl.org: micro-optimise]\nSigned-off-by: Jes Sorensen \u003cjes@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "d5f541ed6e31518508c688912e7464facf253c87", "tree": "028d296306e247ca32ec5db398d365dcd70d26b7", "parents": [ "765c4507af71c39aba21006bbd3ec809fe9714ff" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Sep 27 01:50:08 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:13 2006 -0700" }, "message": "[PATCH] Add node to zone for the NUMA case\n\nAdd the node in order to optimize zone_to_nid.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Paul Jackson \u003cpj@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "5b99cd0effaf846240a15441aec459a592577eaf", "tree": "355772422c716698762030e6261596c2ba484a37", "parents": [ "e129b5c23c2b471d47f1c5d2b8b193fc2034af43" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Sep 27 01:50:01 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:12 2006 -0700" }, "message": "[PATCH] own header file for struct page\n\nThis moves the definition of struct page from mm.h to its own header file\npage-struct.h. This is a prereq to fix SetPageUptodate which is broken on\ns390:\n\n#define SetPageUptodate(_page)\n do {\n struct page *__page \u003d (_page);\n if (!test_and_set_bit(PG_uptodate, \u0026__page-\u003eflags))\n page_test_and_clear_dirty(_page);\n } while (0)\n\n_page gets used twice in this macro which can cause subtle bugs. Using\n__page for the page_test_and_clear_dirty call doesn\u0027t work since it causes\nyet another problem with the page_test_and_clear_dirty macro as well.\n\nIn order to avoid all these problems caused by macros it seems to be a good\nidea to get rid of them and convert them to static inline functions.\nBecause of header file include order it\u0027s necessary to have a seperate\nheader file for the struct page definition.\n\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "fb01439c5b778d5974a488c5d4fe85e6d0e18a68", "tree": "dd5483b2555adbdc51f215fcb010484d423f63a0", "parents": [ "9c7cd6877cf8db15269163deda69392263124c1e" ], "author": { "name": "Mel Gorman", "email": "mel@skynet.ie", "time": "Wed Sep 27 01:49:59 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:12 2006 -0700" }, "message": "[PATCH] Allow an arch to expand node boundaries\n\nArch-independent zone-sizing determines the size of a node\n(pgdat-\u003enode_spanned_pages) based on the physical memory that was\nregistered by the architecture. However, when\nCONFIG_MEMORY_HOTPLUG_RESERVE is set, the architecture expects that the\nspanned_pages will be much larger and that mem_map will be allocated that\nis used lated on memory hot-add.\n\nThis patch allows an architecture that sets CONFIG_MEMORY_HOTPLUG_RESERVE\nto call push_node_boundaries() which will set the node beginning and end to\nat *least* the requested boundary.\n\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: \"Keith Mannthey\" \u003ckmannth@gmail.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "0e0b864e069c52a7b3e4a7da56e29b03a012fd75", "tree": "e3fcfd997ef912ed3c61cb2b5c2ca57a7f45ec58", "parents": [ "05e0caad3b7bd0d0fbeff980bca22f186241a501" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Wed Sep 27 01:49:56 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:11 2006 -0700" }, "message": "[PATCH] Account for memmap and optionally the kernel image as holes\n\nThe x86_64 code accounted for memmap and some portions of the the DMA zone as\nholes. This was because those areas would never be reclaimed and accounting\nfor them as memory affects min watermarks. This patch will account for the\nmemmap as a memory hole. Architectures may optionally use set_dma_reserve()\nif they wish to account for a portion of memory in ZONE_DMA as a hole.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: \"Keith Mannthey\" \u003ckmannth@gmail.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c713216deebd95d2b0ab38fef8bb2361c0180c2d", "tree": "a5a8c61be427e3591811ff712b9ec7ef2f1a1f20", "parents": [ "2bd0cfbde2c0a74e209acbf045f1298cc2f61e01" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Wed Sep 27 01:49:43 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:11 2006 -0700" }, "message": "[PATCH] Introduce mechanism for registering active regions of memory\n\nAt a basic level, architectures define structures to record where active\nranges of page frames are located. Once located, the code to calculate zone\nsizes and holes in each architecture is very similar. Some of this zone and\nhole sizing code is difficult to read for no good reason. This set of patches\neliminates the similar-looking architecture-specific code.\n\nThe patches introduce a mechanism where architectures register where the\nactive ranges of page frames are with add_active_range(). When all areas have\nbeen discovered, free_area_init_nodes() is called to initialise the pgdat and\nzones. The zone sizes and holes are then calculated in an architecture\nindependent manner.\n\nPatch 1 introduces the mechanism for registering and initialising PFN ranges\nPatch 2 changes ppc to use the mechanism - 139 arch-specific LOC removed\nPatch 3 changes x86 to use the mechanism - 136 arch-specific LOC removed\nPatch 4 changes x86_64 to use the mechanism - 74 arch-specific LOC removed\nPatch 5 changes ia64 to use the mechanism - 52 arch-specific LOC removed\nPatch 6 accounts for mem_map as a memory hole as the pages are not reclaimable.\n\tIt adjusts the watermarks slightly\n\nTony Luck has successfully tested for ia64 on Itanium with tiger_defconfig,\ngensparse_defconfig and defconfig. Bob Picco has also tested and debugged on\nIA64. Jack Steiner successfully boot tested on a mammoth SGI IA64-based\nmachine. These were on patches against 2.6.17-rc1 and release 3 of these\npatches but there have been no ia64-changes since release 3.\n\nThere are differences in the zone sizes for x86_64 as the arch-specific code\nfor x86_64 accounts the kernel image and the starting mem_maps as memory holes\nbut the architecture-independent code accounts the memory as present.\n\nThe big benefit of this set of patches is a sizable reduction of\narchitecture-specific code, some of which is very hairy. There should be a\ngreater reduction when other architectures use the same mechanisms for zone\nand hole sizing but I lack the hardware to test on.\n\nAdditional credit;\n\tDave Hansen for the initial suggestion and comments on early patches\n\tAndy Whitcroft for reviewing early versions and catching numerous\n\t\terrors\n\tTony Luck for testing and debugging on IA64\n\tBob Picco for fixing bugs related to pfn registration, reviewing a\n\t\tnumber of patch revisions, providing a number of suggestions\n\t\ton future direction and testing heavily\n\tJack Steiner and Robin Holt for testing on IA64 and clarifying\n\t\tissues related to memory holes\n\tYasunori for testing on IA64\n\tAndi Kleen for reviewing and feeding back about x86_64\n\tChristian Kujau for providing valuable information related to ACPI\n\t\tproblems on x86_64 and testing potential fixes\n\nThis patch:\n\nDefine the structure to represent an active range of page frames within a node\nin an architecture independent manner. Architectures are expected to register\nactive ranges of PFNs using add_active_range(nid, start_pfn, end_pfn) and call\nfree_area_init_nodes() passing the PFNs of the end of each zone.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Bob Picco \u003cbob.picco@hp.com\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: \"Keith Mannthey\" \u003ckmannth@gmail.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "89fa30242facca249aead2aac03c4c69764f911c", "tree": "1ac46b4777b819f2a4793d8e37330576ae5089ec", "parents": [ "4415cc8df630b05d3a54267d5f3e5c0b63a4ec05" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:55 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:52 2006 -0700" }, "message": "[PATCH] NUMA: Add zone_to_nid function\n\nThere are many places where we need to determine the node of a zone.\nCurrently we use a difficult to read sequence of pointer dereferencing.\nPut that into an inline function and use throughout VM. Maybe we can find\na way to optimize the lookup in the future.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "da6052f7b33abe55fbfd7d2213815f58c00a88d4", "tree": "a2deda88ae8e9fc33d9a0ce80f42fde2c55c7bbc", "parents": [ "e5ac9c5aec7c4bc57fa93f2d37d760a22cb7bd33" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Mon Sep 25 23:31:35 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:49 2006 -0700" }, "message": "[PATCH] update some mm/ comments\n\nLet\u0027s try to keep mm/ comments more useful and up to date. This is a start.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "2f1b6248682f8b39ca3c7e549dfc216d26c4109b", "tree": "2340347d10fd0e564fb8527efe3ffbcb216e1906", "parents": [ "98d2b0ebda72fc39cdefd3720d50b9b3ce409085" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:13 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:46 2006 -0700" }, "message": "[PATCH] reduce MAX_NR_ZONES: use enum to define zones, reformat and comment\n\nUse enum for zones and reformat zones dependent information\n\nAdd comments explaning the use of zones and add a zones_t type for zone\nnumbers.\n\nLine up information that will be #ifdefd by the following patches.\n\n[akpm@osdl.org: comment cleanups]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "b221385bc41d6789edde3d2fa0cb20d5045730eb", "tree": "93f3317247d587fd011eb9d77cd73a49670d8d5f", "parents": [ "204ec841fbea3e5138168edbc3a76d46747cc987" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Mon Sep 25 23:31:02 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:45 2006 -0700" }, "message": "[PATCH] mm/: make functions static\n\nThis patch makes the following needlessly global functions static:\n - slab.c: kmem_find_general_cachep()\n - swap.c: __page_cache_release()\n - vmalloc.c: __vmalloc_node()\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "d08b3851da41d0ee60851f2c75b118e1f7a5fc89", "tree": "a01f6930a1387e8f66607e2fe16c62bb7044353b", "parents": [ "725d704ecaca4a43f067092c140d4f3271cf2856" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Mon Sep 25 23:30:57 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:44 2006 -0700" }, "message": "[PATCH] mm: tracking shared dirty pages\n\nTracking of dirty pages in shared writeable mmap()s.\n\nThe idea is simple: write protect clean shared writeable pages, catch the\nwrite-fault, make writeable and set dirty. On page write-back clean all the\nPTE dirty bits and write protect them once again.\n\nThe implementation is a tad harder, mainly because the default\nbacking_dev_info capabilities were too loosely maintained. Hence it is not\nenough to test the backing_dev_info for cap_account_dirty.\n\nThe current heuristic is as follows, a VMA is eligible when:\n - its shared writeable\n (vm_flags \u0026 (VM_WRITE|VM_SHARED)) \u003d\u003d (VM_WRITE|VM_SHARED)\n - it is not a \u0027special\u0027 mapping\n (vm_flags \u0026 (VM_PFNMAP|VM_INSERTPAGE)) \u003d\u003d 0\n - the backing_dev_info is cap_account_dirty\n mapping_cap_account_dirty(vma-\u003evm_file-\u003ef_mapping)\n - f_op-\u003emmap() didn\u0027t change the default page protection\n\nPage from remap_pfn_range() are explicitly excluded because their COW\nsemantics are already horrid enough (see vm_normal_page() in do_wp_page()) and\nbecause they don\u0027t have a backing store anyway.\n\nmprotect() is taught about the new behaviour as well. However it overrides\nthe last condition.\n\nCleaning the pages on write-back is done with page_mkclean() a new rmap call.\nIt can be called on any page, but is currently only implemented for mapped\npages, if the page is found the be of a VMA that accounts dirty pages it will\nalso wrprotect the PTE.\n\nFinally, in fs/buffers.c:try_to_free_buffers(); remove clear_page_dirty() from\nunder -\u003eprivate_lock. This seems to be safe, since -\u003eprivate_lock is used to\nserialize access to the buffers, not the page itself. This is needed because\nclear_page_dirty() will call into page_mkclean() and would thereby violate\nlocking order.\n\n[dhowells@redhat.com: Provide a page_mkclean() implementation for NOMMU]\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "725d704ecaca4a43f067092c140d4f3271cf2856", "tree": "320cf8ab5457ac6c01c05da8c30d6026538ee259", "parents": [ "a6ca1b99ed434f3fb41bbed647ed36c0420501e5" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Mon Sep 25 23:30:55 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:44 2006 -0700" }, "message": "[PATCH] mm: VM_BUG_ON\n\nIntroduce a VM_BUG_ON, which is turned on with CONFIG_DEBUG_VM. Use this\nin the lightweight, inline refcounting functions; PageLRU and PageActive\nchecks in vmscan, because they\u0027re pretty well confined to vmscan. And in\npage allocate/free fastpaths which can be the hottest parts of the kernel\nfor kbuilds.\n\nUnlike BUG_ON, VM_BUG_ON must not be used to execute statements with\nside-effects, and should not be used outside core mm code.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "115b384cf87249d76adb0b21aca11ee22128927d", "tree": "f39a2a54863e9d82d1196906f92c82ab5991c6af", "parents": [ "8eb7925f93af75e66a240d148efdec212f95bcb7", "c336923b668fdcf0312efbec3b44895d713f4d81" ], "author": { "name": "Dave Jones", "email": "davej@redhat.com", "time": "Tue Sep 05 17:20:21 2006 -0400" }, "committer": { "name": "Dave Jones", "email": "davej@redhat.com", "time": "Tue Sep 05 17:20:21 2006 -0400" }, "message": "Merge ../linus\n" }, { "commit": "1d7ea7324ae7a59f8e17e4ba76a2707c1e6f24d2", "tree": "902b646ed70af86481a77a67582b79e67264a481", "parents": [ "9b41ea7289a589993d3daabc61f999b4147872c4" ], "author": { "name": "Alexander Zarochentsev", "email": "zam@namesys.com", "time": "Sun Aug 13 23:24:27 2006 -0700" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Mon Aug 14 12:54:29 2006 -0700" }, "message": "[PATCH] fuse: fix error case in fuse_readpages\n\nDon\u0027t let fuse_readpages leave the @pages list not empty when exiting\non error.\n\n[akpm@osdl.org: kernel-doc fixes]\nSigned-off-by: Alexander Zarochentsev \u003czam@namesys.com\u003e\nSigned-off-by: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n" }, { "commit": "804af2cf6e7af31d2e664b54e657dddd9b531dbd", "tree": "a9127236c76953ddc627b8133aae208651e206fd", "parents": [ "64821324ca49f24be1a66f2f432108f96a24e596" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Wed Jul 26 21:39:49 2006 +0100" }, "committer": { "name": "Dave Jones", "email": "davej@redhat.com", "time": "Wed Jul 26 19:58:39 2006 -0400" }, "message": "[AGPGART] remove private page protection map\n\nAGP keeps its own copy of the protection_map, upcoming DRM changes will\nalso require access to this map from modules.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Dave Airlie \u003cairlied@linux.ie\u003e\nSigned-off-by: Dave Jones \u003cdavej@redhat.com\u003e\n" }, { "commit": "9a11b49a805665e13a56aa067afaf81d43ec1514", "tree": "bf499956e3f67d1211d68ab1e2eb76645f453dfb", "parents": [ "fb7e42413a098cc45b3adf858da290033af62bae" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 03 00:24:33 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jul 03 15:27:01 2006 -0700" }, "message": "[PATCH] lockdep: better lock debugging\n\nGeneric lock debugging:\n\n - generalized lock debugging framework. For example, a bug in one lock\n subsystem turns off debugging in all lock subsystems.\n\n - got rid of the caller address passing (__IP__/__IP_DECL__/etc.) from\n the mutex/rtmutex debugging code: it caused way too much prototype\n hackery, and lockdep will give the same information anyway.\n\n - ability to do silent tests\n\n - check lock freeing in vfree too.\n\n - more finegrained debugging options, to allow distributions to\n turn off more expensive debugging features.\n\nThere\u0027s no separate \u0027held mutexes\u0027 list anymore - but there\u0027s a \u0027held locks\u0027\nstack within lockdep, which unifies deadlock detection across all lock\nclasses. (this is independent of the lockdep validation stuff - lockdep first\nchecks whether we are holding a lock already)\n\nHere are the current debugging options:\n\nCONFIG_DEBUG_MUTEXES\u003dy\nCONFIG_DEBUG_LOCK_ALLOC\u003dy\n\nwhich do:\n\n config DEBUG_MUTEXES\n bool \"Mutex debugging, basic checks\"\n\n config DEBUG_LOCK_ALLOC\n bool \"Detect incorrect freeing of live mutexes\"\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f6ac2354d791195ca40822b84d73d48a4e8b7f2b", "tree": "5f600175cf3591eac3d32bb8cebfd45d0aabf804", "parents": [ "672b2714ae57af16fe7d760dc4e0918a7a6cb0fa" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:32 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:34 2006 -0700" }, "message": "[PATCH] zoned vm counters: create vmstat.c/.h from page_alloc.c/.h\n\nNOTE: ZVC are *not* the lightweight event counters. ZVCs are reliable whereas\nevent counters do not need to be.\n\nZone based VM statistics are necessary to be able to determine what the state\nof memory in one zone is. In a NUMA system this can be helpful for local\nreclaim and other memory optimizations that may be able to shift VM load in\norder to get more balanced memory use.\n\nIt is also useful to know how the computing load affects the memory\nallocations on various zones. This patchset allows the retrieval of that data\nfrom userspace.\n\nThe patchset introduces a framework for counters that is a cross between the\nexisting page_stats --which are simply global counters split per cpu-- and the\napproach of deferred incremental updates implemented for nr_pagecache.\n\nSmall per cpu 8 bit counters are added to struct zone. If the counter exceeds\ncertain thresholds then the counters are accumulated in an array of\natomic_long in the zone and in a global array that sums up all zone values.\nThe small 8 bit counters are next to the per cpu page pointers and so they\nwill be in high in the cpu cache when pages are allocated and freed.\n\nAccess to VM counter information for a zone and for the whole machine is then\npossible by simply indexing an array (Thanks to Nick Piggin for pointing out\nthat approach). The access to the total number of pages of various types does\nno longer require the summing up of all per cpu counters.\n\nBenefits of this patchset right now:\n\n- Ability for UP and SMP configuration to determine how memory\n is balanced between the DMA, NORMAL and HIGHMEM zones.\n\n- loops over all processors are avoided in writeback and\n reclaim paths. We can avoid caching the writeback information\n because the needed information is directly accessible.\n\n- Special handling for nr_pagecache removed.\n\n- zone_reclaim_interval vanishes since VM stats can now determine\n when it is worth to do local reclaim.\n\n- Fast inline per node page state determination.\n\n- Accurate counters in /sys/devices/system/node/node*/meminfo. Current\n counters are counting simply which processor allocated a page somewhere\n and guestimate based on that. So the counters were not useful to show\n the actual distribution of page use on a specific zone.\n\n- The swap_prefetch patch requires per node statistics in order to\n figure out when processors of a node can prefetch. This patch provides\n some of the needed numbers.\n\n- Detailed VM counters available in more /proc and /sys status files.\n\nReferences to earlier discussions:\nV1 http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d113511649910826\u0026w\u003d2\nV2 http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d114980851924230\u0026w\u003d2\nV3 http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d115014697910351\u0026w\u003d2\nV4 http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d115024767318740\u0026w\u003d2\n\nPerformance tests with AIM7 did not show any regressions. Seems to be a tad\nfaster even. Tested on ia64/NUMA. Builds fine on i386, SMP / UP. Includes\nfixes for s390/arm/uml arch code.\n\nThis patch:\n\nMove counter code from page_alloc.c/page-flags.h to vmstat.c/h.\n\nCreate vmstat.c/vmstat.h by separating the counter code and the proc\nfunctions.\n\nMove the vm_stat_text array before zoneinfo_show.\n\n[akpm@osdl.org: s390 build fix]\n[akpm@osdl.org: HOTPLUG_CPU build fix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e7eebaf6a81b956c989f184ee4b27277c88f8afe", "tree": "25adcfb17ec5f857791557a874cc1cced390ca9f", "parents": [ "a6537be9324c67b41f6d98f5a60a1bd5a8e02861" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jun 27 02:54:55 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jun 27 17:32:47 2006 -0700" }, "message": "[PATCH] pi-futex: rt mutex debug\n\nRuntime debugging functionality for rt-mutexes.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f9b8404cf8f8456dfa83459510762b700dc00385", "tree": "f74b54c79ee3913d587644195d8af7ba13b6cc2a", "parents": [ "6abdce7680e3e8436b3292b345d77b67d5ec9ea8" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jun 27 02:54:49 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jun 27 17:32:46 2006 -0700" }, "message": "[PATCH] pi-futex: introduce debug_check_no_locks_freed()\n\nAdd debug_check_no_locks_freed(), as a central inline to add\nbad-lock-free-debugging functionality to.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e6e5494cb23d1933735ee47cc674ffe1c4afed6f", "tree": "c8945bb3ae5bec38693d801fb589d22d48d6f8eb", "parents": [ "d5fb34261dcd32c9cb3b28121fdc46308db513a1" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jun 27 02:53:50 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jun 27 17:32:38 2006 -0700" }, "message": "[PATCH] vdso: randomize the i386 vDSO by moving it into a vma\n\nMove the i386 VDSO down into a vma and thus randomize it.\n\nBesides the security implications, this feature also helps debuggers, which\ncan COW a vma-backed VDSO just like a normal DSO and can thus do\nsingle-stepping and other debugging features.\n\nIt\u0027s good for hypervisors (Xen, VMWare) too, which typically live in the same\nhigh-mapped address space as the VDSO, hence whenever the VDSO is used, they\nget lots of guest pagefaults and have to fix such guest accesses up - which\nslows things down instead of speeding things up (the primary purpose of the\nVDSO).\n\nThere\u0027s a new CONFIG_COMPAT_VDSO (default\u003dy) option, which provides support\nfor older glibcs that still rely on a prelinked high-mapped VDSO. Newer\ndistributions (using glibc 2.3.3 or later) can turn this option off. Turning\nit off is also recommended for security reasons: attackers cannot use the\npredictable high-mapped VDSO page as syscall trampoline anymore.\n\nThere is a new vdso\u003d[0|1] boot option as well, and a runtime\n/proc/sys/vm/vdso_enabled sysctl switch, that allows the VDSO to be turned\non/off.\n\n(This version of the VDSO-randomization patch also has working ELF\ncoredumping, the previous patch crashed in the coredumping code.)\n\nThis code is a combined work of the exec-shield VDSO randomization\ncode and Gerd Hoffmann\u0027s hypervisor-centric VDSO patch. Rusty Russell\nstarted this patch and i completed it.\n\n[akpm@osdl.org: cleanups]\n[akpm@osdl.org: compile fix]\n[akpm@osdl.org: compile fix 2]\n[akpm@osdl.org: compile fix 3]\n[akpm@osdl.org: revernt MAXMEM change]\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Arjan van de Ven \u003carjan@infradead.org\u003e\nCc: Gerd Hoffmann \u003ckraxel@suse.de\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: Zachary Amsden \u003czach@vmware.com\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nCc: Jan Beulich \u003cjbeulich@novell.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "7b2259b3e53f128c10a9fded0965e69d4a949847", "tree": "c1827144c22dd49775190e05de791531e9fd21fd", "parents": [ "68402ddc677005ed1b1359bbc1f279548cfc0928" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Jun 25 05:46:48 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jun 25 10:00:55 2006 -0700" }, "message": "[PATCH] page migration: Support a vma migration function\n\nHooks for calling vma specific migration functions\n\nWith this patch a vma may define a vma-\u003evm_ops-\u003emigrate function. That\nfunction may perform page migration on its own (some vmas may not contain page\nstructs and therefore cannot be handled by regular page migration. Pages in a\nvma may require special preparatory treatment before migration is possible\netc) . Only mmap_sem is held when the migration function is called. The\nmigrate() function gets passed two sets of nodemasks describing the source and\nthe target of the migration. The flags parameter either contains\n\nMPOL_MF_MOVE\twhich means that only pages used exclusively by\n\t\tthe specified mm should be moved\n\nor\n\nMPOL_MF_MOVE_ALL which means that pages shared with other processes\n\t\tshould also be moved.\n\nThe migration function returns 0 on success or an error condition. An error\ncondition will prevent regular page migration from occurring.\n\nOn its own this patch cannot be included since there are no users for this\nfunctionality. But it seems that the uncached allocator will need this\nfunctionality at some point.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "68402ddc677005ed1b1359bbc1f279548cfc0928", "tree": "83da62a2b55e2ea7e0c46ed79c0d6498d36e1942", "parents": [ "9f1a3cfcffaed2fbb3206179295c79ca8289f5c3" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Jun 25 05:46:47 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jun 25 10:00:55 2006 -0700" }, "message": "[PATCH] mm: remove VM_LOCKED before remap_pfn_range and drop VM_SHM\n\nRemove VM_LOCKED before remap_pfn range from device drivers and get rid of\nVM_SHM.\n\nremap_pfn_range() already sets VM_IO. There is no need to set VM_SHM since\nit does nothing. VM_LOCKED is of no use since the remap_pfn_range does not\nplace pages on the LRU. The pages are therefore never subject to swap\nanyways. Remove all the vm_flags settings before calling remap_pfn_range.\n\nAfter removing all the vm_flag settings no use of VM_SHM is left. Drop it.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9637a5efd4fbe36164c5ce7f6a0ee68b2bf22b7f", "tree": "38b86e3e2151e78f952076e36bee4fd7d77e3baf", "parents": [ "bd96b9eb7cfd6ab24ba244360a09980a720874d2" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Jun 23 02:03:43 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:51 2006 -0700" }, "message": "[PATCH] add page_mkwrite() vm_operations method\n\nAdd a new VMA operation to notify a filesystem or other driver about the\nMMU generating a fault because userspace attempted to write to a page\nmapped through a read-only PTE.\n\nThis facility permits the filesystem or driver to:\n\n (*) Implement storage allocation/reservation on attempted write, and so to\n deal with problems such as ENOSPC more gracefully (perhaps by generating\n SIGBUS).\n\n (*) Delay making the page writable until the contents have been written to a\n backing cache. This is useful for NFS/AFS when using FS-Cache/CacheFS.\n It permits the filesystem to have some guarantee about the state of the\n cache.\n\n (*) Account and limit number of dirty pages. This is one piece of the puzzle\n needed to make shared writable mapping work safely in FUSE.\n\nNeeded by cachefs (Or is it cachefiles? Or fscache? \u003chead spins\u003e).\n\nAt least four other groups have stated an interest in it or a desire to use\nthe functionality it provides: FUSE, OCFS2, NTFS and JFFS2. Also, things like\nEXT3 really ought to use it to deal with the case of shared-writable mmap\nencountering ENOSPC before we permit the page to be dirtied.\n\nFrom: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\n\n get_user_pages(.write\u003d1, .force\u003d1) can generate COW hits on read-only\n shared mappings, this patch traps those as mkpage_write candidates and fails\n to handle them the old way.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nCc: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nCc: Joel Becker \u003cJoel.Becker@oracle.com\u003e\nCc: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nCc: Anton Altaparmakov \u003caia21@cantab.net\u003e\nCc: David Woodhouse \u003cdwmw2@infradead.org\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "cb2b95e1c6b56e3d2369d3a5f4bc97f4fa180683", "tree": "121d3fcd539f7d62887949840307ac26aadaa9e4", "parents": [ "6f0419e06a3b151ab616a31accdabef41dc2d1b0" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Fri Jun 23 02:03:01 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:45 2006 -0700" }, "message": "[PATCH] zone handle unaligned zone boundaries\n\nThe buddy allocator has a requirement that boundaries between contigious\nzones occur aligned with the the MAX_ORDER ranges. Where they do not we\nwill incorrectly merge pages cross zone boundaries. This can lead to pages\nfrom the wrong zone being handed out.\n\nOriginally the buddy allocator would check that buddies were in the same\nzone by referencing the zone start and end page frame numbers. This was\nremoved as it became very expensive and the buddy allocator already made\nthe assumption that zones boundaries were aligned.\n\nIt is clear that not all configurations and architectures are honouring\nthis alignment requirement. Therefore it seems safest to reintroduce\nsupport for non-aligned zone boundaries. This patch introduces a new check\nwhen considering a page a buddy it compares the zone_table index for the\ntwo pages and refuses to merge the pages where they do not match. The\nzone_table index is unique for each node/zone combination when\nFLATMEM/DISCONTIGMEM is enabled and for each section/zone combination when\nSPARSEMEM is enabled (a SPARSEMEM section is at least a MAX_ORDER size).\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "62c4f0a2d5a188f73a94f2cb8ea0dba3e7cf0a7f", "tree": "e85ca2d0dd43f90dccf758338764c3caa55f333f", "parents": [ "089f26d5e31b7bf42a9a8fefec08b30cd27f4b0e" ], "author": { "name": "David Woodhouse", "email": "dwmw2@infradead.org", "time": "Wed Apr 26 12:56:16 2006 +0100" }, "committer": { "name": "David Woodhouse", "email": "dwmw2@infradead.org", "time": "Wed Apr 26 12:56:16 2006 +0100" }, "message": "Don\u0027t include linux/config.h from anywhere else in include/\n\nSigned-off-by: David Woodhouse \u003cdwmw2@infradead.org\u003e\n" }, { "commit": "676165a8af7167f488abdcce6851a9bc36e83254", "tree": "a9b2b8dc155b48ce073b5ada31f2ac0694118e69", "parents": [ "c3a9d6541f84ac3ff566982d08389b87c1c36b4e" ], "author": { "name": "Nick Piggin", "email": "piggin@cyberone.com.au", "time": "Mon Apr 10 11:21:48 2006 +1000" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Apr 10 10:16:37 2006 -0700" }, "message": "[PATCH] Fix buddy list race that could lead to page lru list corruptions\n\nRohit found an obscure bug causing buddy list corruption.\n\npage_is_buddy is using a non-atomic test (PagePrivate \u0026\u0026 page_count \u003d\u003d 0)\nto determine whether or not a free page\u0027s buddy is itself free and in the\nbuddy lists.\n\nEach of the conjuncts may be true at different times due to unrelated\nconditions, so the non-atomic page_is_buddy test may find each conjunct to\nbe true even if they were not both true at the same time (ie. the page was\nnot on the buddy lists).\n\nSigned-off-by: Martin Bligh \u003cmbligh@google.com\u003e\nSigned-off-by: Rohit Seth \u003crohitseth@google.com\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "617d2214ee06c209e5c375c280d50abace8058e1", "tree": "dd2fbf4a2cfa9854ebf27e6f100608c8a0507850", "parents": [ "b7ab795b7bec9997d4fde39f249d52823d36d98d" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Mar 22 00:08:43 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Mar 22 07:54:02 2006 -0800" }, "message": "[PATCH] mm: optimise page_count\n\nOptimise page_count compound page test and make it consistent with similar\nfunctions.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "7835e98b2e3c66dba79cb0ff8ebb90a2fe030c29", "tree": "405a96eade34845dabe2f125b6c5eb095846869d", "parents": [ "70dc991d66cac40fdb07346dba2b5d862d732c34" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Mar 22 00:08:40 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Mar 22 07:54:02 2006 -0800" }, "message": "[PATCH] remove set_page_count() outside mm/\n\nset_page_count usage outside mm/ is limited to setting the refcount to 1.\nRemove set_page_count from outside mm/, and replace those users with\ninit_page_count() and set_page_refcounted().\n\nThis allows more debug checking, and tighter control on how code is allowed\nto play around with page-\u003e_count.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "84097518d1ecd2330f9488e4c2d09953a3340e74", "tree": "50981fe0584c456a1a86e6d7f611eec223b5f536", "parents": [ "0f8053a509ceba4a077a50ea7b77039b5559b428" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Mar 22 00:08:34 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Mar 22 07:54:01 2006 -0800" }, "message": "[PATCH] mm: nommu use compound pages\n\nNow that compound page handling is properly fixed in the VM, move nommu\nover to using compound pages rather than rolling their own refcounting.\n\nnommu vm page refcounting is broken anyway, but there is no need to have\ndivergent code in the core VM now, nor when it gets fixed.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\n\n(Needs testing, please).\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "0f8053a509ceba4a077a50ea7b77039b5559b428", "tree": "5a66021540395e20256f38a3a45174617428a832", "parents": [ "4fa4f53bf92139595cae6f1a3d972fc0a3451d29" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Mar 22 00:08:33 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Mar 22 07:54:01 2006 -0800" }, "message": "[PATCH] mm: make __put_page internal\n\nRemove __put_page from outside the core mm/. It is dangerous because it does\nnot handle compound pages nicely, and misses 1-\u003e0 transitions. If a user\nlater appears that really needs the extra speed we can reevaluate.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "69e05944af39fc6c97b09380c8721e38433bd828", "tree": "165e594ed5cd34c3a2b2ec236f75ac5b192ade7a", "parents": [ "179e96395b1f01e95ebe1ff5ef306b810dbbd147" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Wed Mar 22 00:08:19 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Mar 22 07:54:00 2006 -0800" }, "message": "[PATCH] vmscan: use unsigned longs\n\nTurn basically everything in vmscan.c into `unsigned long\u0027. This is to avoid\nthe possibility that some piece of code in there might decide to operate upon\nmore than 4G (or even 2G) of pages in one hit.\n\nThis might be silly, but we\u0027ll need it one day.\n\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "8dfcc9ba27e2ed257e5de9539f7f03e57c2c0e33", "tree": "aecaeb6a0b33c23f79dfcd2418e4a3881a29f2e2", "parents": [ "8e7a9aae91101916b86de07fafe3272ea8dc1f10" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Mar 22 00:08:05 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Mar 22 07:53:57 2006 -0800" }, "message": "[PATCH] mm: split highorder pages\n\nHave an explicit mm call to split higher order pages into individual pages.\n Should help to avoid bugs and be more explicit about the code\u0027s intention.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Chris Zankel \u003cchris@zankel.net\u003e\nSigned-off-by: Yoichi Yuasa \u003cyoichi_yuasa@tripeaks.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "8dc04efbfb3c08a08fb7a3b97348d5d561b26ae2", "tree": "a48ce376d077745fdab23a33e5be1d48c979c3ae", "parents": [ "7c8ee9a86340db686cd4314e9944dc9b6111bda9" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Mar 22 00:08:03 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Mar 22 07:53:57 2006 -0800" }, "message": "[PATCH] mm: de-skew page refcounting\n\natomic_add_unless (atomic_inc_not_zero) no longer requires an offset refcount\nto function correctly.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "7c8ee9a86340db686cd4314e9944dc9b6111bda9", "tree": "80638e1658556b4fd7c0b92d571aaac854245bd3", "parents": [ "f205b2fe62d321403525065a4cb31b6bff1bbe53" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Mar 22 00:08:03 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Mar 22 07:53:57 2006 -0800" }, "message": "[PATCH] mm: simplify vmscan vs release refcounting\n\nThe VM has an interesting race where a page refcount can drop to zero, but it\nis still on the LRU lists for a short time. This was solved by testing a 0-\u003e1\nrefcount transition when picking up pages from the LRU, and dropping the\nrefcount in that case.\n\nInstead, use atomic_add_unless to ensure we never pick up a 0 refcount page\nfrom the LRU, thus a 0 refcount page will never have its refcount elevated\nuntil it is allocated again.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "7a9166e3b037296366cea6f3c97f705d33e209e6", "tree": "275c713bc92309b6f90e5c66699753c0268c6be5", "parents": [ "c8b8b1f2e0eeb91cca22211950742b5f51564672" ], "author": { "name": "Luke Yang", "email": "luke.adi@gmail.com", "time": "Mon Feb 20 18:28:07 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Feb 20 20:00:11 2006 -0800" }, "message": "[PATCH] Fix undefined symbols for nommu architecture\n\nSigned-off-by: Luke Yang \u003cluke.adi@gmail.com\u003e\nAcked-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "a62eaf151d9cb478d127cfbc2e93c498869785b0", "tree": "b13d62257ada7e0a9d37fdc9a69a7afa6f028b30", "parents": [ "99019e919969be88e7e4042f3afa296bd55ad9ec" ], "author": { "name": "Andi Kleen", "email": "ak@suse.de", "time": "Thu Feb 16 23:41:58 2006 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Feb 17 08:00:40 2006 -0800" }, "message": "[PATCH] x86_64: Add boot option to disable randomized mappings and cleanup\n\nAMD SimNow!\u0027s JIT doesn\u0027t like them at all in the guest. For distribution\ninstallation it\u0027s easiest if it\u0027s a boot time option.\n\nAlso I moved the variable to a more appropiate place and make\nit independent from sysctl\n\nAnd marked __read_mostly which it is.\n\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "8519fb30e438f8088b71a94a7d5a660a814d3872", "tree": "8d29a7b1fa33e5f65e649d363cfa10e83c4fab97", "parents": [ "99f6d61bda82d09b2d94414d413d39f66a0b7da2" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Feb 07 12:58:52 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Feb 07 16:12:33 2006 -0800" }, "message": "[PATCH] mm: compound release fix\n\nCompound pages on SMP systems can now often be freed from pagetables via\nthe release_pages path. This uses put_page_testzero which does not handle\ncompound pages at all. Releasing constituent pages from process mappings\ndecrements their count to a large negative number and leaks the reference\nat the head page - net result is a memory leak.\n\nThe problem was hidden because the debug check in put_page_testzero itself\nactually did take compound pages into consideration.\n\nFix the bug and the debug check.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "652050aec936fdd70ed9cbce1cd1ef30a7c9d117", "tree": "a2859991fd1c71d918c85c5a8b4bc63bb2c64808", "parents": [ "9ab34fe76114b9538bfcaf3a9d112dee0feb5f17" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Jan 14 13:21:30 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Jan 14 18:27:15 2006 -0800" }, "message": "[PATCH] mark several functions __always_inline\n\n Arjan van de Ven \u003carjan@infradead.org\u003e\n\nMark a number of functions as \u0027must inline\u0027. The functions affected by this\npatch need to be inlined because they use knowledge that their arguments are\nconstant so that most of the function optimizes away. At this point this\npatch does not change behavior, it\u0027s for documentation only (and for future\npatches in the inline series)\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Arjan van de Ven \u003carjan@infradead.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c59ede7b78db329949d9cdcd7064e22d357560ef", "tree": "f9dc9d464fdad5bfd464d983e77c1af031389dda", "parents": [ "e16885c5ad624a6efe1b1bf764e075d75f65a788" ], "author": { "name": "Randy.Dunlap", "email": "rdunlap@xenotime.net", "time": "Wed Jan 11 12:17:46 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Jan 11 18:42:13 2006 -0800" }, "message": "[PATCH] move capable() to capability.h\n\n- Move capable() from sched.h to capability.h;\n\n- Use \u003clinux/capability.h\u003e where capable() is used\n\t(in include/, block/, ipc/, kernel/, a few drivers/,\n\tmm/, security/, \u0026 sound/;\n\tmany more drivers/ to go)\n\nSigned-off-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "a4fc7ab1d065a9dd89ed0e74439ef87d4a16e980", "tree": "6312597ad183ee45e8769b1bc5b0035bfa681d64", "parents": [ "a8b9ee7396ccc8db3bdb4108993556acbe2d3527" ], "author": { "name": "David Woodhouse", "email": "dwmw2@infradead.org", "time": "Wed Jan 11 14:41:26 2006 +0000" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Jan 11 08:14:16 2006 -0800" }, "message": "[PATCH] fix/simplify mutex debugging code\n\nLet\u0027s switch mutex_debug_check_no_locks_freed() to take (addr, len) as\narguments instead, since all its callers were just calculating the \u0027to\u0027\naddress for themselves anyway... (and sometimes doing so badly).\n\nSigned-off-by: David Woodhouse \u003cdwmw2@infradead.org\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "de5097c2e73f826302cd8957c225b3725e0c7553", "tree": "3d56ab6fd891088ac55a9ef529faf4360391a22f", "parents": [ "408894ee4dd4debfdedd472eb4d8414892fc90f6" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jan 09 15:59:21 2006 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@hera.kernel.org", "time": "Mon Jan 09 15:59:21 2006 -0800" }, "message": "[PATCH] mutex subsystem, more debugging code\n\nmore mutex debugging: check for held locks during memory freeing,\ntask exit, enable sysrq printouts, etc.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Arjan van de Ven \u003carjan@infradead.org\u003e\n" }, { "commit": "349aef0bc4c7f07d685c977e12d0e2d0b5d0e6db", "tree": "6bb266ed8826bb4e7355a07a0092acb3d5d92647", "parents": [ "59d9136b9844d3a0376d93c945ab280decedb323" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Sun Jan 08 01:04:36 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jan 08 20:14:04 2006 -0800" }, "message": "[PATCH] shrink struct page\n\nReduce the size of the pageframe for NR_CPUS\u003e4, CONFIG_PREEMPT back to the\nminimal size by unionising both -\u003eprivate and -\u003emapping with the pagetable\nlock.\n\nIt uses an anonymous struct and hence requires gcc-3.x.\n\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "152194aaa6266d71dfee57882a23def339ef17a4", "tree": "9af269a9f4c14e549c719207b0856da32ddec746", "parents": [ "aea47ff363c15b0be5fc27ed991b1fdee338f0a7" ], "author": { "name": "Avishay Traeger", "email": "atraeger@cs.sunysb.edu", "time": "Sun Jan 08 01:00:58 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jan 08 20:12:43 2006 -0800" }, "message": "[PATCH] set_page_count() macro safety\n\nFix set_page_count() macro to handle complex arguments.\n\nSigned-off-by: Avishay Traeger \u003catraeger@cs.sunysb.edu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9d0243bca345d5ce25d3f4b74b7facb3a6df1232", "tree": "a3a0a763bf83a483282dc1c3caab587941a98fc2", "parents": [ "bec6b0c89b234090681a4516e20ac5debe3e7c59" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Sun Jan 08 01:00:39 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jan 08 20:12:40 2006 -0800" }, "message": "[PATCH] drop-pagecache\n\nAdd /proc/sys/vm/drop_caches. When written to, this will cause the kernel to\ndiscard as much pagecache and/or reclaimable slab objects as it can. THis\noperation requires root permissions.\n\nIt won\u0027t drop dirty data, so the user should run `sync\u0027 first.\n\nCaveats:\n\na) Holds inode_lock for exorbitant amounts of time.\n\nb) Needs to be taught about NUMA nodes: propagate these all the way through\n so the discarding can be controlled on a per-node basis.\n\nThis is a debugging feature: useful for getting consistent results between\nfilesystem benchmarks. We could possibly put it under a config option, but\nit\u0027s less than 300 bytes.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" } ], "next": "7ee1dd3fee22f15728f545d266403fc977e1eb99" }