)]}' { "log": [ { "commit": "9d966d495c4ac2fcbd010f681425f67141f80bad", "tree": "4df188540aa724b85fff6477e5315fd9ca984061", "parents": [ "411223c01a51163e995dbc2679bf8e963a136a5f" ], "author": { "name": "Al Viro", "email": "viro@ftp.linux.org.uk", "time": "Sun Oct 14 19:34:10 2007 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Oct 14 12:41:51 2007 -0700" }, "message": "mm/migrate.c __user annotation\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6712ecf8f648118c3363c142196418f89a510b90", "tree": "347d39a7d5a7ed96d3b1afecd28de2a0f98b98c9", "parents": [ "5bb23a688b2de23d7765a1dd439d89c038378978" ], "author": { "name": "NeilBrown", "email": "neilb@suse.de", "time": "Thu Sep 27 12:47:43 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "axboe@carl.home.kernel.dk", "time": "Wed Oct 10 09:25:57 2007 +0200" }, "message": "Drop \u0027size\u0027 argument from bio_endio and bi_end_io\n\nAs bi_end_io is only called once when the reqeust is complete,\nthe \u0027size\u0027 argument is now redundant. Remove it.\n\nNow there is no need for bio_endio to subtract the size completed\nfrom bi_size. So don\u0027t do that either.\n\nWhile we are at it, change bi_end_io to return void.\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "f5ff8422bbdd59f8c1f699df248e1b7a11073027", "tree": "cdd0777acc58c0badd2d0ae66f3efc2f7318e776", "parents": [ "3317fedba9446465082bcc6ce1232451ad1d51ce" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Sep 21 09:19:54 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "axboe@carl.home.kernel.dk", "time": "Wed Oct 10 09:25:57 2007 +0200" }, "message": "Fix warnings with !CONFIG_BLOCK\n\nHide everything in blkdev.h with CONFIG_BLOCK isn\u0027t set, and fixup\nthe (few) files that fail to build because they were relying on blkdev.h\npulling in extra includes for them.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "745ad48e8cac47beec0b2f72dc3c64424bce1fec", "tree": "a16a8eedb7d6e27eaba86fd0cca8ea7bfd0cdcd8", "parents": [ "dd204d63cd11509081b41d7ab305fdc173382039" ], "author": { "name": "Yan Zheng", "email": "yanzheng@21cn.com", "time": "Mon Oct 08 10:08:37 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Oct 08 12:58:14 2007 -0700" }, "message": "fix page release issue in filemap_fault\n\nfind_lock_page increases page\u0027s usage count, we should decrease it\nbefore return VM_FAULT_SIGBUS\n\nSigned-off-by: Yan Zheng\u003cyanzheng@21cn.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "dd204d63cd11509081b41d7ab305fdc173382039", "tree": "12dcbf4b258de6962b960f4f5fdd46866d7bcdc3", "parents": [ "a200ee182a016752464a12cb2e8762e48254bb09" ], "author": { "name": "Yan Zheng", "email": "yanzheng@21cn.com", "time": "Mon Oct 08 10:05:48 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Oct 08 12:58:14 2007 -0700" }, "message": "fix VM_CAN_NONLINEAR check in sys_remap_file_pages\n\nThe test for VM_CAN_NONLINEAR always fails\n\nSigned-off-by: Yan Zheng\u003cyanzheng@21cn.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a200ee182a016752464a12cb2e8762e48254bb09", "tree": "7b273f002625a4c368f7b20b144990f7f4f81df9", "parents": [ "3eb215de26e6e94bf5fed9cb77230c383b30e53b" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Mon Oct 08 18:54:37 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Oct 08 12:58:14 2007 -0700" }, "message": "mm: set_page_dirty_balance() vs -\u003epage_mkwrite()\n\nAll the current page_mkwrite() implementations also set the page dirty. Which\nresults in the set_page_dirty_balance() call to _not_ call balance, because the\npage is already found dirty.\n\nThis allows us to dirty a _lot_ of pages without ever hitting\nbalance_dirty_pages(). Not good (tm).\n\nForce a balance call if -\u003epage_mkwrite() was successful.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "67dd5a25f4efbfccf973159429cb20acdc5b0e0e", "tree": "9965b12c0d614b7cf82dd8483cfc1671f925af4e", "parents": [ "9f34073b4e54ad58541e0e2b4a87f4f6c1460e21" ], "author": { "name": "Jeremy Fitzhardinge", "email": "jeremy@goop.org", "time": "Fri Oct 05 17:19:35 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Oct 06 09:31:30 2007 -0700" }, "message": "xen: disable split pte locks for now\n\nWhen pinning and unpinning pagetables, we must protect them against\nbeing used by other CPUs, lest they see the pagetable in an\nintermediate read-only-but-not-pinned state.\n\nWhen using split pte locks, doing this properly would require taking\nall the pte locks for the pagetable while pinning, but this may overflow\nthe PREEMPT_BITS part of the preempt counter if the process has mapped\nmore than about 512M of memory.\n\nHowever, failing to take the pte locks causes write-protect faults when\nthe pageout code is trying to clear the Access bit on a pte which is part\nof a freshy created and still being pinned process after fork.\n\nThis is a short-term fix until the problem is solved properly.\n\nSigned-off-by: Jeremy Fitzhardinge \u003cjeremy@xensource.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nAcked-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Keir Fraser \u003ckeir@xensource.com\u003e\nCc: Jan Beulich \u003cjbeulich@novell.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "16abfa086096895d438b19198e408ee96da7b508", "tree": "1d82091f35f069d7b2a7636b5f488987671bdade", "parents": [ "804b3f9a16e446cb023417faec58b6506c834052" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Thu Oct 04 16:56:06 2007 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Oct 04 10:13:09 2007 -0700" }, "message": "Fix sys_remap_file_pages BUG at highmem.c:15!\n\nGurudas Pai reports kernel BUG at arch/i386/mm/highmem.c:15! below\nsys_remap_file_pages, while running Oracle database test on x86 in 6GB\nRAM: kunmap thinks we\u0027re in_interrupt because the preempt count has\nwrapped.\n\nThat\u0027s because __do_fault expected to unmap page_table, but one of its\ntwo callers do_nonlinear_fault already unmapped it: let do_linear_fault\nunmap it first too, and then there\u0027s no need to pass the page_table arg\ndown.\n\nWhy have we been so slow to notice this? Probably through forgetting\nthat the mapping_cap_account_dirty test means that sys_remap_file_pages\nnowadays only goes the full nonlinear vma route on a few memory-backed\nfilesystems like ramfs, tmpfs and hugetlbfs.\n\n[ It also depends on CONFIG_HIGHPTE, so it becomes even harder to\n trigger in practice. Many who have need of large memory have probably\n migrated to x86-64..\n\n Problem introduced by commit d0217ac04ca6591841e5665f518e38064f4e65bd\n (\"mm: fault feedback #1\") -- Linus ]\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: gurudas pai \u003cgurudas.pai@oracle.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "281e0e3b34acb76a157576d27abc85c09fcf78e3", "tree": "136dc7376976685539c132690ff74aea79642737", "parents": [ "8814842fbb6d8907cd23711cc4cbc3a6a191080f" ], "author": { "name": "Ralf Baechle", "email": "ralf@linux-mips.org", "time": "Mon Oct 01 01:20:10 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Oct 01 07:52:23 2007 -0700" }, "message": "hugetlb: fix clear_user_highpage arguments\n\nThe virtual address space argument of clear_user_highpage is supposed to be\nthe virtual address where the page being cleared will eventually be mapped.\n This allows architectures with virtually indexed caches a few clever\ntricks. That sort of trick falls over in painful ways if the virtual\naddress argument is wrong.\n\nSigned-off-by: Ralf Baechle \u003cralf@linux-mips.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "480eccf9ae1073b87bb4fe118971fbf134a5bc61", "tree": "b66cd85cd6ad9dc7c141d34837a848111d036584", "parents": [ "28f300d23674fa01ae747c66ce861d4ee6aebe8c" ], "author": { "name": "Lee Schermerhorn", "email": "Lee.Schermerhorn@hp.com", "time": "Tue Sep 18 22:46:47 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Sep 19 11:24:18 2007 -0700" }, "message": "Fix NUMA Memory Policy Reference Counting\n\nThis patch proposes fixes to the reference counting of memory policy in the\npage allocation paths and in show_numa_map(). Extracted from my \"Memory\nPolicy Cleanups and Enhancements\" series as stand-alone.\n\nShared policy lookup [shmem] has always added a reference to the policy,\nbut this was never unrefed after page allocation or after formatting the\nnuma map data.\n\nDefault system policy should not require additional ref counting, nor\nshould the current task\u0027s task policy. However, show_numa_map() calls\nget_vma_policy() to examine what may be [likely is] another task\u0027s policy.\nThe latter case needs protection against freeing of the policy.\n\nThis patch adds a reference count to a mempolicy returned by\nget_vma_policy() when the policy is a vma policy or another task\u0027s\nmempolicy. Again, shared policy is already reference counted on lookup. A\nmatching \"unref\" [__mpol_free()] is performed in alloc_page_vma() for\nshared and vma policies, and in show_numa_map() for shared and another\ntask\u0027s mempolicy. We can call __mpol_free() directly, saving an admittedly\ninexpensive inline NULL test, because we know we have a non-NULL policy.\n\nHandling policy ref counts for hugepages is a bit trickier.\nhuge_zonelist() returns a zone list that might come from a shared or vma\n\u0027BIND policy. In this case, we should hold the reference until after the\nhuge page allocation in dequeue_hugepage(). The patch modifies\nhuge_zonelist() to return a pointer to the mempolicy if it needs to be\nunref\u0027d after allocation.\n\nKernel Build [16cpu, 32GB, ia64] - average of 10 runs:\n\n\t\tw/o patch\tw/ refcount patch\n\t Avg\t Std Devn\t Avg\t Std Devn\nReal:\t 100.59\t 0.38\t 100.63\t 0.43\nUser:\t1209.60\t 0.37\t1209.91\t 0.31\nSystem: 81.52\t 0.42\t 81.64\t 0.34\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nAcked-by: Andi Kleen \u003cak@suse.de\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ba0268a8b056f2ad846f1f8837a764c21bb6425e", "tree": "93ab7d2555a98628850dbf917a43ceddef8c980c", "parents": [ "4150d3f549fe2355625017b2a6ff72aec98bcef0" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Sep 11 15:24:11 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Sep 11 17:21:27 2007 -0700" }, "message": "SLUB: accurately compare debug flags during slab cache merge\n\nThis was posted on Aug 28 and fixes an issue that could cause troubles\nwhen slab caches \u003e\u003d128k are created.\n\nhttp://marc.info/?l\u003dlinux-mm\u0026m\u003d118798149918424\u0026w\u003d2\n\nCurrently we simply add the debug flags unconditional when checking for a\nmatching slab. This creates issues for sysfs processing when slabs exist\nthat are exempt from debugging due to their huge size or because only a\nsubset of slabs was selected for debugging.\n\nWe need to only add the flags if kmem_cache_open() would also add them.\n\nCreate a function to calculate the flags that would be set\nif the cache would be opened and use that function to determine\nthe flags before looking for a compatible slab.\n\n[akpm@linux-foundation.org: fixlets]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Chuck Ebbert \u003ccebbert@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3b42d28b2a04b3c9830eb865288239d45eccc402", "tree": "776a297ef8bd8a879da74290543907014abe6198", "parents": [ "dec4ad86c2fbea062e9ef9caa6d6e79f7c5e0b12" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Aug 31 00:12:08 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Aug 31 01:42:23 2007 -0700" }, "message": "Page migration: Do not accept invalid nodes in the target nodeset\n\nPage migration currently does not check if the target of the move contains\nnodes that that are invalid (if root attempts to migrate pages)\nand may try to allocate from invalid nodes if these are specified\nleading to oopses.\n\nReturn -EINVAL if an offline node is specified.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Shaohua Li \u003cshaohua.li@intel.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5d540fb71552b9f2c542bea967200c48be2d8ef6", "tree": "af328bd4d12b2b91c6fa53af94a78fcc370562ce", "parents": [ "4ccdb4c8727c9963c7aa0d6301df283cf1f8a731" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Thu Aug 30 23:56:26 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Aug 31 01:42:22 2007 -0700" }, "message": "slub: do not fail if we cannot register a slab with sysfs\n\nDo not BUG() if we cannot register a slab with sysfs. Just print an error.\n The only consequence of not registering is that the slab cache is not\nvisible via /sys/slab. A BUG() may not be visible that early during boot\nand we have had multiple issues here already.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "989f89c57e6361e7d16fbd9572b5da7d313b073d", "tree": "cd5f655709e1515568c1e1f309f169723ce3b084", "parents": [ "d1254b12c93e1e586137a2ffef71fd33cf273f35" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Thu Aug 30 23:56:21 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Aug 31 01:42:22 2007 -0700" }, "message": "fix rcu_read_lock() in page migraton\n\nIn migration fallback path, write_page() or lock_page() will be called.\nThis causes sleep with holding rcu_read_lock().\nFor avoding that, just do rcu_lock if the page is Anon.(this is enough.)\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "641916881322a2dee5b120d509a3bdd05a502510", "tree": "79c0b1f449bcf09404ba932b07330a24bce4d00d", "parents": [ "060d11b0b35d13eb2251fd08403d900b71df5791" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Thu Aug 30 23:56:17 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Aug 31 01:42:22 2007 -0700" }, "message": "process_zones(): fix recovery code\n\nDon\u0027t try to free memory which we didn\u0027t allocate.\n\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": "b377fd3982ad957c796758a90e2988401a884241", "tree": "3d7449ccdf7038bffffa9323873f4095cc1ac6ce", "parents": [ "8e92f21ba3ea3f54e4be062b87ef9fc4af2d33e2" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Wed Aug 22 14:02:05 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Aug 22 19:52:47 2007 -0700" }, "message": "Apply memory policies to top two highest zones when highest zone is ZONE_MOVABLE\n\nThe NUMA layer only supports NUMA policies for the highest zone. When\nZONE_MOVABLE is configured with kernelcore\u003d, the the highest zone becomes\nZONE_MOVABLE. The result is that policies are only applied to allocations\nlike anonymous pages and page cache allocated from ZONE_MOVABLE when the\nzone is used.\n\nThis patch applies policies to the two highest zones when the highest zone\nis ZONE_MOVABLE. As ZONE_MOVABLE consists of pages from the highest \"real\"\nzone, it\u0027s always functionally equivalent.\n\nThe patch has been tested on a variety of machines both NUMA and non-NUMA\ncovering x86, x86_64 and ppc64. No abnormal results were seen in\nkernbench, tbench, dbench or hackbench. It passes regression tests from\nthe numactl package with and without kernelcore\u003d once numactl tests are\npatched to wait for vmstat counters to update.\n\nakpm: this is the nasty hack to fix NUMA mempolicies in the presence of\nZONE_MOVABLE and kernelcore\u003d in 2.6.23. Christoph says \"For .24 either merge\nthe mobility or get the other solution that Mel is working on. That solution\nwould only use a single zonelist per node and filter on the fly. That may\nhelp performance and also help to make memory policies work better.\"\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nTested-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a2f92ee7e704440995cf5474f4cc7b268bf380e0", "tree": "8c51ce70ddf96f0a16eccb85f7883c33e143f34e", "parents": [ "9e86943b6c74f214ce0516d56e55636d52252e19" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Aug 22 14:01:57 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Aug 22 19:52:47 2007 -0700" }, "message": "SLUB: do not fail on broken memory configurations\n\nPrint a big fat warning and do what is necessary to continue if a node is\nmarked as up (meaning either node is online (upstream) or node has memory\n(Andrew\u0027s tree)) but allocations from the node do not succeed.\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": "9e86943b6c74f214ce0516d56e55636d52252e19", "tree": "f5ba2d57e7a5d5a031f1e6a418e7d5e2c5a838b8", "parents": [ "fe58103a56f05613cb1f0ef228354d4d5f6c2b08" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Aug 22 14:01:56 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Aug 22 19:52:47 2007 -0700" }, "message": "SLUB: use atomic_long_read for atomic_long variables\n\nSLUB is using atomic_read() for variables declared atomic_long_t.\nSwitch to atomic_long_read().\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": "a89182c76e54134081cfec6409df06731c5cb98f", "tree": "270616c2f6a1ce63a0bbd196a00e267b27e08250", "parents": [ "d4c63b7c74507c424afcc9c80ba77a55bfb0d07e" ], "author": { "name": "Adam Litke", "email": "agl@us.ibm.com", "time": "Wed Aug 22 14:01:51 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Aug 22 19:52:46 2007 -0700" }, "message": "Fix VM_FAULT flags conversion for hugetlb\n\nIt seems a simple mistake was made when converting follow_hugetlb_page()\nover to the VM_FAULT flags bitmasks (in \"mm: fault feedback #2\", commit\n83c54070ee1a2d05c89793884bea1a03f2851ed4).\n\nBy using the wrong bitmask, hugetlb_fault() failures are not being\nrecognized. This results in an infinite loop whenever follow_hugetlb_page\nis involved in a failed fault.\n\nSigned-off-by: Adam Litke \u003cagl@us.ibm.com\u003e\nAcked-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1807a1aaf5f2a35ea6d4b527b28bc8889d255a2f", "tree": "8b07b08bedebc9bc09648fa3443041a03121733f", "parents": [ "32d219854d31daba3407389ada1d454a4cd86fda" ], "author": { "name": "Siddha, Suresh B", "email": "suresh.b.siddha@intel.com", "time": "Wed Aug 22 14:01:49 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Aug 22 19:52:46 2007 -0700" }, "message": "slab: skip calling cache_free_alien() when the platform is not numa capable\n\nSkip calling cache_free_alien() when the platform is not numa capable.\nThis will avoid cache misses that happen while accessing slabp (which is\nper page memory reference) to get nodeid. Instead use a global variable to\nskip the call, which is mostly likely to be present in the cache.\n\nThis gives a 0.8% performance boost with the database oltp workload on a\nquad-core SMP platform and by any means the number is not small :)\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "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": "c661b078fd62abe06fd11fab4ac5e4eeafe26b6d", "tree": "f21ffeed682900b783563e7d8a8dde906706cc88", "parents": [ "e9187bdcbbc06090757d565a3077e1b0ecab23d2" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Wed Aug 22 14:01:26 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Aug 22 19:52:45 2007 -0700" }, "message": "synchronous lumpy reclaim: wait for page writeback when directly reclaiming contiguous areas\n\nLumpy reclaim works by selecting a lead page from the LRU list and then\nselecting pages for reclaim from the order-aligned area of pages. In the\nsituation were all pages in that region are inactive and not referenced by any\nprocess over time, it works well.\n\nIn the situation where there is even light load on the system, the pages may\nnot free quickly. Out of a area of 1024 pages, maybe only 950 of them are\nfreed when the allocation attempt occurs because lumpy reclaim returned early.\n This patch alters the behaviour of direct reclaim for large contiguous\nblocks.\n\nThe first attempt to call shrink_page_list() is asynchronous but if it fails,\nthe pages are submitted a second time and the calling process waits for the IO\nto complete. This may stall allocators waiting for contiguous memory but that\nshould be expected behaviour for high-order users. It is preferable behaviour\nto potentially queueing unnecessary areas for IO. Note that kswapd will not\nstall in this fashion.\n\n[apw@shadowen.org: update to version 2]\n[apw@shadowen.org: update to version 3]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-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": "e9187bdcbbc06090757d565a3077e1b0ecab23d2", "tree": "5393cb22c5aef33ec27fa23d633ea088a6066c13", "parents": [ "0cd82ef1fb8909d6d414f36f291c2f67ca70e2be" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Wed Aug 22 14:01:25 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Aug 22 19:52:45 2007 -0700" }, "message": "synchronous lumpy reclaim: ensure we count pages transitioning inactive via clear_active_flags\n\nAs pointed out by Mel when reclaim is applied at higher orders a significant\namount of IO may be started. As this takes finite time to drain reclaim will\nconsider more areas than ultimatly needed to satisfy the request. This leads\nto more reclaim than strictly required and reduced success rates.\n\nI was able to confirm Mel\u0027s test results on systems locally. These show that\neven under light load the success rates drop off far more than expected.\nTesting with a modified version of his patch (which follows) I was able to\nallocate almost all of ZONE_MOVABLE with a near idle system. I ran 5 test\npasses sequentially following system boot (the system has 29 hugepages in\nZONE_MOVABLE):\n\n 2.6.23-rc1 11 8 6 7 7\n sync_lumpy 28 28 29 29 26\n\nThese show that although hugely better than the near 0% success normally\nexpected we can only allocate about a 1/4 of the zone. Using synchronous\nreclaim for these allocations we get close to 100% as expected.\n\nI have also run our standard high order tests and these show no regressions in\nallocation success rates at rest, and some significant improvements under\nload.\n\nThis patch:\n\nWe are transitioning pages from active to inactive in clear_active_flags,\nthose need counting as PGDEACTIVATE vm events.\n\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "85770ffe4f0cdd4396b17f14762adc25a571a348", "tree": "23f69f720e53cee67632b04c1754c3a7a64dab72", "parents": [ "df068464169a84a6a66c05d140f43a46d5eb6176" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Wed Aug 22 14:01:03 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Aug 22 19:52:44 2007 -0700" }, "message": "sparsemem: ensure we initialise the node mapping for SPARSEMEM_STATIC\n\nBooting SPARSEMEM on NUMA systems trips a BUG in page_alloc.c:\n\n\tInitializing HighMem for node 0 (00038000:00100000)\n\tInitializing HighMem for node 1 (00100000:001ffe00)\n\t------------[ cut here ]------------\n\tkernel BUG at /home/apw/git/linux-2.6/mm/page_alloc.c:456!\n\t[...]\n\nThis occurs because the section to node id mapping is not being\nsetup correctly during init under SPARSEMEM_STATIC, leading to an\nattempt to free pages from all nodes into the zones on node 0.\n\nWhen the zone_table[] was removed in the following commit, a new\nsection to node mapping table was introduced:\n\n commit 89689ae7f95995723fbcd5c116c47933a3bb8b13\n [PATCH] Get rid of zone_table[]\n\nThat conversion inadvertantly only initialised the node mapping in\nSPARSEMEM_EXTREME. Ensure we initialise the node mapping in\nSPARSEMEM_STATIC.\n\n[akpm@linux-foundation.org: make the stubs static inline]\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "dc8a7b11aa68d6795a46e0a42ce92220d1a6f0cd", "tree": "7b353684090d23b1e2e3f85bf83df491f04dcc8a", "parents": [ "d291676ce8bc1d8ef93488023d04027010596de3", "02a5e0acb3cb85d80d0fe834e366d38a92bbaa22" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Aug 11 16:01:06 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Aug 11 16:01:06 2007 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.dk/linux-2.6-block\n\n* \u0027for-linus\u0027 of git://git.kernel.dk/linux-2.6-block:\n BLOCK: Hide the contents of linux/bio.h if CONFIG_BLOCK\u003dn\n sysace: HDIO_GETGEO has it\u0027s own method for ages\n drivers/block/cpqarray.c: better error handling and kmalloc + memset conversion to k[cz]alloc\n drivers/block/cciss.c: kmalloc + memset conversion to kzalloc\n Clean up duplicate includes in drivers/block/\n Fix remap handling by blktrace\n [PATCH] remove mm/filemap.c:file_send_actor()\n" }, { "commit": "f0b85c0cfdad8977d82fed88e846fc2245585d0e", "tree": "df85c3195dd46095a40be69647ee5c93911f2e03", "parents": [ "f6901e639800e745457b1dcd99c52647981438d7" ], "author": { "name": "Stephen Hemminger", "email": "shemminger@linux-foundation.org", "time": "Fri Aug 10 13:01:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Aug 11 15:47:42 2007 -0700" }, "message": "readahead: docbook fix\n\nMinor docbook error since argument name in comment doesn\u0027t match function\n\nSigned-off-by: Stephen Hemminger \u003cshemminger@linux-foundation.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ec05b297f91a443aa26b74059b573bfad49c9ebb", "tree": "4890ea53de4373e51688e72576781909588515a3", "parents": [ "ac07860264bd2b18834d3fa3be47032115524cea" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Mon Jul 30 08:24:27 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Sat Aug 11 22:34:47 2007 +0200" }, "message": "[PATCH] remove mm/filemap.c:file_send_actor()\n\nThis patch removes the no longer used file_send_actor().\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "1ceef40249f21eceabf8633934d94962e7d8e1d7", "tree": "2b9201a2f7b102d0db7f2790df6f6456fae89e21", "parents": [ "fcda3d89bf1366f6801447eab2d8a75ac5b9c4ce" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Aug 07 15:11:48 2007 -0700" }, "committer": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Thu Aug 09 21:57:16 2007 -0700" }, "message": "SLUB: Fix dynamic dma kmalloc cache creation\n\nThe dynamic dma kmalloc creation can run into trouble if a\nGFP_ATOMIC allocation is the first one performed for a certain size\nof dma kmalloc slab.\n\n- Move the adding of the slab to sysfs into a workqueue\n (sysfs does GFP_KERNEL allocations)\n- Do not call kmem_cache_destroy() (uses slub_lock)\n- Only acquire the slub_lock once and--if we cannot wait--do a trylock.\n\n This introduces a slight risk of the first kmalloc(x, GFP_DMA|GFP_ATOMIC)\n for a range of sizes failing due to another process holding the slub_lock.\n However, we only need to acquire the spinlock once in order to establish\n each power of two DMA kmalloc cache. The possible conflict is with the\n slub_lock taken during slab management actions (create / remove slab cache).\n\n It is rather typical that a driver will first fill its buffers using\n GFP_KERNEL allocations which will wait until the slub_lock can be acquired.\n Drivers will also create its slab caches first outside of an atomic\n context before starting to use atomic kmalloc from an interrupt context.\n\n If there are any failures then they will occur early after boot or when\n loading of multiple drivers concurrently. Drivers can already accomodate\n failures of GFP_ATOMIC for other reasons. Retries will then create the slab.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\n" }, { "commit": "fcda3d89bf1366f6801447eab2d8a75ac5b9c4ce", "tree": "47382ad57b48a1a0e46a6190991f88a9e6973e45", "parents": [ "6adb31c90c47262c8a25bf5097de9b3426caf3ae" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Jul 30 13:06:46 2007 -0700" }, "committer": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Thu Aug 09 21:57:15 2007 -0700" }, "message": "SLUB: Remove checks for MAX_PARTIAL from kmem_cache_shrink\n\nThe MAX_PARTIAL checks were supposed to be an optimization. However, slab\nshrinking is a manually triggered process either through running slabinfo\nor by the kernel calling kmem_cache_shrink.\n\nIf one really wants to shrink a slab then all operations should be done\nregardless of the size of the partial list. This also fixes an issue that\ncould surface if the number of partial slabs was initially above MAX_PARTIAL\nin kmem_cache_shrink and later drops below MAX_PARTIAL through the\nelimination of empty slabs on the partial list (rare). In that case a few\nslabs may be left off the partial list (and only be put back when they\nare empty).\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\n" }, { "commit": "bfe0d6867e36f46836d2c3755fa8b9ef8cf143ba", "tree": "0632dc1fd135324b6e9baf9568ee2cf46cb5765b", "parents": [ "64d158bc3db121fd2bec29057a44843930b044fa" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Tue Jul 31 00:37:56 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 31 15:39:38 2007 -0700" }, "message": "fix filemap.c kernel-doc\n\nFix kernel-doc warning:\nWarning(linux-2.6.23-rc1-mm1//mm/filemap.c:864): No description found for parameter \u0027ra\u0027\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@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": "a5e58a61420e99dd08685f622d4dc666bf07e9a5", "tree": "e9dfbeac7648a954c927d2461016e8d0d98cca74", "parents": [ "c8ed39ebe0cf490abd7bf7c77b728dd6fefb2cf8" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Tue Jul 31 00:37:32 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 31 15:39:36 2007 -0700" }, "message": "oom: print points as unsigned long\n\nIn badness(), the automatic variable \u0027points\u0027 is unsigned long. Print it\nas such.\n\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a8bbf72ab9b3072ece630d97689145b1a2f01221", "tree": "4d55318fff1aecd3c5d2c1e877847bcb2347dd2e", "parents": [ "252e48389ed30d7c77385fb92fca765a680de408" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Jul 31 00:37:30 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 31 15:39:36 2007 -0700" }, "message": "Do not trigger OOM-killer for high-order allocation failures\n\nout_of_memory() may be called when an allocation is failing and the direct\nreclaim is not making any progress. This does not take into account the\nrequested order of the allocation. If the request if for an order larger\nthan PAGE_ALLOC_COSTLY_ORDER, it is reasonable to fail the allocation\nbecause the kernel makes no guarantees about those allocations succeeding.\n\nThis false OOM situation can occur if a user is trying to grow the hugepage\npool in a script like;\n\n#!/bin/bash\nREQUIRED\u003d$1\necho 1 \u003e /proc/sys/vm/hugepages_treat_as_movable\necho $REQUIRED \u003e /proc/sys/vm/nr_hugepages\nACTUAL\u003d`cat /proc/sys/vm/nr_hugepages`\nwhile [ $REQUIRED -ne $ACTUAL ]; do\n\techo Huge page pool at $ACTUAL growing to $REQUIRED\n\techo $REQUIRED \u003e /proc/sys/vm/nr_hugepages\n\tACTUAL\u003d`cat /proc/sys/vm/nr_hugepages`\n\tsleep 1\ndone\n\nThis is a reasonable scenario when ZONE_MOVABLE is in use but triggers OOM\neasily on 2.6.23-rc1. This patch will fail an allocation for an order above\nPAGE_ALLOC_COSTLY_ORDER instead of killing processes and retrying.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2208b764c14d0f1ad63da64b1a42db6077b6fe42", "tree": "eb936f9fce478ffd6252e5dd2e6a88540b78a641", "parents": [ "02febdf7f62f2fbfa89ca9dc5d929beea89c96b1" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Thu Jul 26 20:54:34 2007 +0200" }, "committer": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Jul 30 12:15:15 2007 -0700" }, "message": "slub: fix bug in slub debug support\n\nWe ClearSlabDebug() before the last SlabDebug() check. Clear it later.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\n" }, { "commit": "02febdf7f62f2fbfa89ca9dc5d929beea89c96b1", "tree": "8138189066b52f8a4cc4b2ad7b82ce800def8bb9", "parents": [ "9c837fb692b005203765d8a569a2fe43fdff9df1" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Thu Jul 26 20:01:38 2007 +0200" }, "committer": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Jul 30 12:12:39 2007 -0700" }, "message": "slub: add lock debugging check\n\nIngo noticed that the SLUB code does include the lock debugging free\ncheck.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\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": "296699de6bdc717189a331ab6bbe90e05c94db06", "tree": "53c847ecc8cce11952502921844052e44ca60d5e", "parents": [ "b0cb1a19d05b8ea8611a9ef48a17fe417f1832e6" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Sun Jul 29 23:27:18 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Jul 29 16:45:38 2007 -0700" }, "message": "Introduce CONFIG_SUSPEND for suspend-to-Ram and standby\n\nIntroduce CONFIG_SUSPEND representing the ability to enter system sleep\nstates, such as the ACPI S3 state, and allow the user to choose SUSPEND\nand HIBERNATION independently of each other.\n\nMake HOTPLUG_CPU be selected automatically if SUSPEND or HIBERNATION has\nbeen chosen and the kernel is intended for SMP systems.\n\nAlso, introduce CONFIG_PM_SLEEP which is automatically selected if\nCONFIG_SUSPEND or CONFIG_HIBERNATION is set and use it to select the\ncode needed for both suspend and hibernation.\n\nThe top-level power management headers and the ACPI code related to\nsuspend and hibernation are modified to use the new definitions (the\nchanges in drivers/acpi/sleep/main.c are, mostly, moving code to reduce\nthe number of ifdefs).\n\nThere are many other files in which CONFIG_PM can be replaced with\nCONFIG_PM_SLEEP or even with CONFIG_SUSPEND, but they can be updated in\nthe future.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b0cb1a19d05b8ea8611a9ef48a17fe417f1832e6", "tree": "895fe53e8dc4fc59d05b963ac079f6ff759ad0fb", "parents": [ "6c8dca5d53f95009d4fff00195bf38f277dc4366" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Sun Jul 29 23:24:36 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Jul 29 16:45:38 2007 -0700" }, "message": "Replace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATION\n\nReplace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATION to avoid\nconfusion (among other things, with CONFIG_SUSPEND introduced in the\nnext patch).\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b5445f956ec3c8c19b760775e9ff92a160e3a167", "tree": "034d62678f1e402e6d71b07ba0bf96544554a2ba", "parents": [ "ee2077d97b2f392cfc0b884775ac58aa9b9b8c8f" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Thu Jul 26 10:41:18 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 26 11:35:19 2007 -0700" }, "message": "Allow nodes to exist that only contain ZONE_MOVABLE\n\nWith the introduction of kernelcore\u003d, a configurable zone is created on\nrequest. In some cases, this value will be small enough that some nodes\ncontain only ZONE_MOVABLE. On some NUMA configurations when this occurs,\narch-independent zone-sizing will get the size of the memory holes within\nthe node incorrect. The value of present_pages goes negative and the boot\nfails.\n\nThis patch fixes the bug in the calculation of the size of the hole. The\ntest case is to boot test a NUMA machine with a low value of kernelcore\u003d\nbefore and after the patch is applied. While this bug exists in early\nkernel it cannot be triggered in practice.\n\nThis patch has been boot-tested on a variety machines with and without\nkernelcore\u003d set.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3dd9fe8c397df68086e6a1b2160573abbe944813", "tree": "86dda41ade146e2a403151c7ba2f7e32a930bc63", "parents": [ "dc386d4d1e98bb39fb967ee156cd456c802fc692" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Thu Jul 26 10:41:08 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 26 11:35:17 2007 -0700" }, "message": "memory unplug: isolate_lru_page fix\n\nrelease_pages() in mm/swap.c changes page_count() to be 0 without removing\nPageLRU flag...\n\nThis means isolate_lru_page() can see a page, PageLRU() \u0026\u0026\npage_count(page)\u003d\u003d0.. This is BUG. (get_page() will be called against\ncount\u003d0 page.)\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "dc386d4d1e98bb39fb967ee156cd456c802fc692", "tree": "ddd26eb0f08611a84157e4f8e1537a5127b96ea0", "parents": [ "098284020c47c1212d211e39ae2b41c21182e056" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Thu Jul 26 10:41:07 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 26 11:35:17 2007 -0700" }, "message": "memory unplug: migration by kernel\n\nIn usual, migrate_pages(page,,) is called with holding mm-\u003esem by system call.\n(mm here is a mm_struct which maps the migration target page.)\nThis semaphore helps avoiding some race conditions.\n\nBut, if we want to migrate a page by some kernel codes, we have to avoid\nsome races. This patch adds check code for following race condition.\n\n1. A page which page-\u003emapping\u003d\u003dNULL can be target of migration. Then, we have\n to check page-\u003emapping before calling try_to_unmap().\n\n2. anon_vma can be freed while page is unmapped, but page-\u003emapping remains as\n it was. We drop page-\u003emapcount to be 0. Then we cannot trust page-\u003emapping.\n So, use rcu_read_lock() to prevent anon_vma pointed by page-\u003emapping from\n being freed during migration.\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b2e961eb2e7a54ffaae82f8e0198b26b54ade98e", "tree": "33e5192a4c84e717d8c2f8235f268216b01053f7", "parents": [ "b8c1c5da1520977cb55a358f20fc09567d40cad9", "71f65e6bd7651610d2d6aeb3c12aab63667ace30" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 24 12:26:44 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 24 12:26:44 2007 -0700" }, "message": "Merge branch \u0027request-queue-t\u0027 of git://git.kernel.dk/linux-2.6-block\n\n* \u0027request-queue-t\u0027 of git://git.kernel.dk/linux-2.6-block:\n [BLOCK] Add request_queue_t and mark it deprecated\n [BLOCK] Get rid of request_queue_t typedef\n" }, { "commit": "b8c1c5da1520977cb55a358f20fc09567d40cad9", "tree": "c762e6ad77297beed0978337ce2f5b0c50add739", "parents": [ "01e457cfcd5b6b6f18d0bb8cec0c5d43df56557e" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Tue Jul 24 12:02:40 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 24 12:24:59 2007 -0700" }, "message": "slab: correctly handle __GFP_ZERO\n\nUse the correct local variable when calling into the page allocator. Local\n`flags\u0027 can have __GFP_ZERO set, which causes us to pass __GFP_ZERO into the\npage allocator, possibly from illegal contexts. The page allocator will later\ndo prep_zero_page()-\u003ekmap_atomic(..., KM_USER0) from irq contexts and will\nthen go BUG.\n\nCc: Mike Galbraith \u003cefault@gmx.de\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5ab3ee7b1cd5c91eb2272764f9d7d1fe4749681e", "tree": "82c1fbc5e3a41651d4c0d45cf13d85760708c184", "parents": [ "be1ff386e768ee4fc19bb7da48cee4fc4cb4e75b" ], "author": { "name": "Ken Chen", "email": "kenchen@google.com", "time": "Mon Jul 23 18:44:00 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 24 12:24:59 2007 -0700" }, "message": "fix hugetlb page allocation leak\n\ndequeue_huge_page() has a serious memory leak upon hugetlb page\nallocation. The for loop continues on allocating hugetlb pages out of\nall allowable zone, where this function is supposedly only dequeue one\nand only one pages.\n\nFixed it by breaking out of the for loop once a hugetlb page is found.\n\nSigned-off-by: Ken Chen \u003ckenchen@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "165125e1e480f9510a5ffcfbfee4e3ee38c05f23", "tree": "8009c8a5ff09e26dc2418d42f66ecafb055c52a2", "parents": [ "f695baf2df9e0413d3521661070103711545207a" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jul 24 09:28:11 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jul 24 09:28:11 2007 +0200" }, "message": "[BLOCK] Get rid of request_queue_t typedef\n\nSome of the code has been gradually transitioned to using the proper\nstruct request_queue, but there\u0027s lots left. So do a full sweet of\nthe kernel and get rid of this typedef and replace its uses with\nthe proper type.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "dec2e6b7aa5d45bc3508e19907a7716b0c5307e5", "tree": "6214a1061268c805aded57413e98544456f175ab", "parents": [ "7aa6ec56b9e9e95eb6c83516ddbb6159fd11c224" ], "author": { "name": "Sam Ravnborg", "email": "sam@ravnborg.org", "time": "Sun Jul 22 11:12:44 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Jul 22 11:03:38 2007 -0700" }, "message": "x86_64: fix section mismatch warning in init.c\n\nFix following warning:\nWARNING: vmlinux.o(.text+0x188ea): Section mismatch: reference to .init.text:__alloc_bootmem_core (between \u0027alloc_bootmem_high_node\u0027 and \u0027get_gate_vma\u0027)\n\nalloc_bootmem_high_node() is only used from __init scope so declare it __init.\nAnd in addition declare the weak variant __init too.\n\nSigned-off-by: Sam Ravnborg \u003csam@ravnborg.org\u003e\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d6269543ef24aa012aa228c27af3adb074f7b36b", "tree": "5e0c24ce1dd5ed3947ea00b7863782e24848b8d3", "parents": [ "41f9dc5c871600f53c8912b2975971d2a11c1c25" ], "author": { "name": "Matt Mackall", "email": "mpm@selenic.com", "time": "Sat Jul 21 04:37:40 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Jul 21 17:49:16 2007 -0700" }, "message": "slob: reduce list scanning\n\nThe version of SLOB in -mm always scans its free list from the beginning,\nwhich results in small allocations and free segments clustering at the\nbeginning of the list over time. This causes the average search to scan\nover a large stretch at the beginning on each allocation.\n\nBy starting each page search where the last one left off, we evenly\ndistribute the allocations and greatly shorten the average search.\n\nWithout this patch, kernel compiles on a 1.5G machine take a large amount\nof system time for list scanning. With this patch, compiles are within a\nfew seconds of performance of a SLAB kernel with no notable change in\nsystem time.\n\nSigned-off-by: Matt Mackall \u003cmpm@selenic.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "41f9dc5c871600f53c8912b2975971d2a11c1c25", "tree": "c87833f1e6ffd73bc99ad7c83fffbd3cd47a64ca", "parents": [ "61d488da9bad8d1511d18291006bd2dd728f173d" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Sat Jul 21 04:37:40 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Jul 21 17:49:16 2007 -0700" }, "message": "remove handle_mm_fault export\n\nNow that arch/powerpc/platforms/cell/spufs/fault.c is always built in\nthe kernel there is no need to export handle_mm_fault anymore.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b50731732f926d6c49fd0724616a7344c31cd5cf", "tree": "2bc72fc6bf200b3696666ff1ef21f7e60a379d35", "parents": [ "df336d1c7b6fd510fa6d3a028f999e7586c7026e" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Sat Jul 21 04:37:25 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Jul 21 17:49:14 2007 -0700" }, "message": "nommu: vmalloc_32_user()/vm_insert_page() and symbol exports.\n\nTrying to survive an allmodconfig on a nommu platform results in many\nscreen lengths of module unhappiness. Many of the mmap related things that\nbinfmt_flat hooks in to are never exported despite being global, and there\nare also missing definitions for vmalloc_32_user() and vm_insert_page().\n\nI\u0027ve implemented vmalloc_32_user() trying to stick as close to the\nmm/vmalloc.c implementation as possible, though we don\u0027t have any need for\nVM_USERMAP, so groveling for the VMA can be skipped. vm_insert_page() has\nbeen stubbed for now in order to keep the build happy.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e228929bc257b963523ed75aa60d2ad77ece2189", "tree": "d72cf8e6d8a126792565549527efc2c9a6fcdcbe", "parents": [ "8d1b87530e7df5c9541a69910ef7f786f034eca0" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Fri Jul 20 00:31:44 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jul 20 08:44:19 2007 -0700" }, "message": "mm: fix memory hotplug oops from ZONE_MOVABLE changes.\n\nzone_movable_pfn is presently marked as __initdata and referenced from\nadjust_zone_range_for_zone_movable(), which in turn is referenced by\nzone_spanned_pages_in_node(). Both of these are __meminit annotated. When\nmemory hotplug is enabled, this will oops on a hot-add, due to\nzone_movable_pfn having been freed.\n\n__meminitdata annotation gives the desired behaviour.\n\nThis will only impact platforms that enable both memory hotplug\nand ARCH_POPULATES_NODE_MAP.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "20c2df83d25c6a95affe6157a4c9cac4cf5ffaac", "tree": "415c4453d2b17a50abe7a3e515177e1fa337bd67", "parents": [ "64fb98fc40738ae1a98bcea9ca3145b89fb71524" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Fri Jul 20 10:11:58 2007 +0900" }, "committer": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Fri Jul 20 10:11:58 2007 +0900" }, "message": "mm: Remove slab destructors from kmem_cache_create().\n\nSlab destructors were no longer supported after Christoph\u0027s\nc59def9f222d44bb7e2f0a559f2906191a0862d7 change. They\u0027ve been\nBUGs for both slab and slub, and slob never supported them\neither.\n\nThis rips out support for the dtor pointer from kmem_cache_create()\ncompletely and fixes up every single callsite in the kernel (there were\nabout 224, not including the slab allocator definitions themselves,\nor the documentation references).\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\n" }, { "commit": "9550b105b8646f916862aee3ab7b25020ca14159", "tree": "d5e57db2bfd773611e2b77b4bbe6d89ba8449b45", "parents": [ "a5c96d8a1c67f31ef48935a78da2d2076513842b" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 13:21:34 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 13:21:34 2007 -0700" }, "message": "slub: fix ksize() for zero-sized pointers\n\nThe slab and slob allocators already did this right, but slub would call\n\"get_object_page()\" on the magic ZERO_SIZE_PTR, with all kinds of nasty\nend results.\n\nNoted by Ingo Molnar.\n\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a5c96d8a1c67f31ef48935a78da2d2076513842b", "tree": "d164c6b33a1de9ea157b99bb353f84e41774164e", "parents": [ "ce8c2293be47999584908069e78bf6d94beadc53" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 13:17:15 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 13:17:15 2007 -0700" }, "message": "Fix up non-NUMA SLAB configuration for zero-sized allocations\n\nI suspect Christoph tested his code only in the NUMA configuration, for\nthe combination of SLAB+non-NUMA the zero-sized kmalloc\u0027s would not work.\n\nOf course, this would only trigger in configurations where those zero-\nsized allocations happen (not very common), so that may explain why it\nwasn\u0027t more widely noticed.\n\nSeen by by Andi Kleen under qemu, and there seems to be a report by\nMichael Tsirkin on it too.\n\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Roland Dreier \u003crdreier@cisco.com\u003e\nCc: Michael S. Tsirkin \u003cmst@dev.mellanox.co.il\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5992b6dac0d23a2b51a1ccbaf8f1a2e62097b12b", "tree": "47b059a9f22d6d0111c669d808617aa73a709259", "parents": [ "57deb52622f3700d154e32662f36cd5f4053f6ed" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Jul 19 01:49:21 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:52 2007 -0700" }, "message": "lguest: export symbols for lguest as a module\n\nlguest does some fairly lowlevel things to support a host, which\nnormal modules don\u0027t need:\n\nmath_state_restore:\n\tWhen the guest triggers a Device Not Available fault, we need\n\tto be able to restore the FPU\n\n__put_task_struct:\n\tWe need to hold a reference to another task for inter-guest\n\tI/O, and put_task_struct() is an inline function which calls\n\t__put_task_struct.\n\naccess_process_vm:\n\tWe need to access another task for inter-guest I/O.\n\nmap_vm_area \u0026 __get_vm_area:\n\tWe need to map the switcher shim (ie. monitor) at 0xFFC01000.\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d688abf50bd5a30d2c44dea2a72dd59052cd3cce", "tree": "2f572d18af05969b2c882970cda4860be345bdfc", "parents": [ "6819457d2cb7fe4fdb0fc3655b6b6dc71a86bee9" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Thu Jul 19 01:49:17 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:52 2007 -0700" }, "message": "move page writeback acounting out of macros\n\npage-writeback accounting is presently performed in the page-flags macros.\nThis is inconsistent and a bit ugly and makes it awkward to implement\nper-backing_dev under-writeback page accounting.\n\nSo move this accounting down to the callsite(s).\n\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f8af0bb890d6cdcb09ec042c128e217a7c500355", "tree": "c74f53e64b74162488b7ca3f5199acf7f5b6e501", "parents": [ "7ed5cb2b73d0c4165c0504c95454fade0c0bf3d9" ], "author": { "name": "Akinobu Mita", "email": "akinobu.mita@gmail.com", "time": "Thu Jul 19 01:49:12 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:50 2007 -0700" }, "message": "hugetlb: use set_compound_page_dtor\n\nUse appropriate accessor function to set compound page destructor\nfunction.\n\nCc: William Irwin \u003cwli@holomorphy.com\u003e\nSigned-off-by: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nAcked-by: Adam Litke \u003cagl@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7ed5cb2b73d0c4165c0504c95454fade0c0bf3d9", "tree": "37b15b57986466531c5a0debb6b52660ca47e86a", "parents": [ "e3aded3cc289113c7bc729ef4cb75e56d9aa71be" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Thu Jul 19 01:49:11 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:50 2007 -0700" }, "message": "Remove nid_lock from alloc_fresh_huge_page\n\nThe fix to that race in alloc_fresh_huge_page() which could give an illegal\nnode ID did not need nid_lock at all: the fix was to replace static int nid\nby static int prev_nid and do the work on local int nid. nid_lock did make\nsure that racers strictly roundrobin the nodes, but that\u0027s not something we\nneed to enforce strictly. Kill nid_lock.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7ac674f52778b95450509357435320be1d795248", "tree": "93657e44d8d7ba7f8857ba038074e2ec4a9c2d38", "parents": [ "ea02e3dde3509ffa7fda7f8de9c8a366e03f7bbd" ], "author": { "name": "Benjamin Herrenschmidt", "email": "benh@kernel.crashing.org", "time": "Thu Jul 19 01:49:10 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:50 2007 -0700" }, "message": "vmalloc_32 should use GFP_KERNEL\n\nI\u0027ve noticed lots of failures of vmalloc_32 on machines where it\nshouldn\u0027t have failed unless it was doing an atomic operation.\n\nLooking closely, I noticed that:\n\n#if defined(CONFIG_64BIT) \u0026\u0026 defined(CONFIG_ZONE_DMA32)\n#define GFP_VMALLOC32 GFP_DMA32\n#elif defined(CONFIG_64BIT) \u0026\u0026 defined(CONFIG_ZONE_DMA)\n#define GFP_VMALLOC32 GFP_DMA\n#else\n#define GFP_VMALLOC32 GFP_KERNEL\n#endif\n\nWhich seems to be incorrect, it should always -or- in the DMA flags\non top of GFP_KERNEL, thus this patch.\n\nThis fixes frequent errors launchin X with the nouveau DRM for example.\n\nSigned-off-by: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Dave Airlie \u003cairlied@linux.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ea02e3dde3509ffa7fda7f8de9c8a366e03f7bbd", "tree": "0c48aa948de8549a2b183c2ed3e5b338fa9730b7", "parents": [ "3abf7afd406866a84276d3ed04f4edf6070c9cb5" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Jul 19 01:49:09 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:50 2007 -0700" }, "message": "FRV: work around a possible compiler bug\n\nWork around a possible bug in the FRV compiler.\n\nWhat appears to be happening is that gcc resolves the\n__builtin_constant_p() in kmalloc() to true, but then fails to reduce the\ntherefore constant conditions in the if-statements it guards to constant\nresults.\n\nWhen compiling with -O2 or -Os, one single spurious error crops up in\ncpuup_callback() in mm/slab.c. This can be avoided by making the memsize\nvariable const.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3abf7afd406866a84276d3ed04f4edf6070c9cb5", "tree": "4ee66f7d1a12261cbc7139b99b4fa94a8ecab122", "parents": [ "dd00cc486ab1c17049a535413d1751ef3482141c" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Thu Jul 19 01:49:08 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:50 2007 -0700" }, "message": "dequeue_huge_page() warning fix\n\nmm/hugetlb.c: In function `dequeue_huge_page\u0027:\nmm/hugetlb.c:72: warning: \u0027nid\u0027 might be used uninitialized in this function\n\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Adam Litke \u003cagl@us.ibm.com\u003e\nCc: David Gibson \u003chermes@gibson.dropbear.id.au\u003e\nCc: William Lee Irwin III \u003cwli@holomorphy.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b6a2fea39318e43fee84fa7b0b90d68bed92d2ba", "tree": "c9c3619cb2730b5c10c7427b837146bce3d69156", "parents": [ "bdf4c48af20a3b0f01671799ace345e3d49576da" ], "author": { "name": "Ollie Wild", "email": "aaw@google.com", "time": "Thu Jul 19 01:48:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:45 2007 -0700" }, "message": "mm: variable length argument support\n\nRemove the arg+env limit of MAX_ARG_PAGES by copying the strings directly from\nthe old mm into the new mm.\n\nWe create the new mm before the binfmt code runs, and place the new stack at\nthe very top of the address space. Once the binfmt code runs and figures out\nwhere the stack should be, we move it downwards.\n\nIt is a bit peculiar in that we have one task with two mm\u0027s, one of which is\ninactive.\n\n[a.p.zijlstra@chello.nl: limit stack size]\nSigned-off-by: Ollie Wild \u003caaw@google.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\n[bunk@stusta.de: unexport bprm_mm_init]\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f9acc8c7b35a100f3a9e0e6977f7807b0169f9a5", "tree": "6a4dcd227bb698a217a1d42d37e3f0135a444ea4", "parents": [ "cf914a7d656e62b9dd3e0dffe4f62b953ae6048d" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Thu Jul 19 01:48:08 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:44 2007 -0700" }, "message": "readahead: sanify file_ra_state names\n\nRename some file_ra_state variables and remove some accessors.\n\nIt results in much simpler code.\nKudos to Rusty!\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "cf914a7d656e62b9dd3e0dffe4f62b953ae6048d", "tree": "baf7e79de006ca80eac426d2d1be4c52f5f19624", "parents": [ "fe3cba17c49471e99d3421e675fc8b3deaaf0b70" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Jul 19 01:48:08 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:44 2007 -0700" }, "message": "readahead: split ondemand readahead interface into two functions\n\nSplit ondemand readahead interface into two functions. I think this makes it\na little clearer for non-readahead experts (like Rusty).\n\nInternally they both call ondemand_readahead(), but the page argument is\nchanged to an obvious boolean flag.\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fe3cba17c49471e99d3421e675fc8b3deaaf0b70", "tree": "df696c4584c6db2e439f068d2474fcb946ca587d", "parents": [ "d8983910a4045fa21022cfccf76ed13eb40fd7f5" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Thu Jul 19 01:48:07 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:44 2007 -0700" }, "message": "mm: share PG_readahead and PG_reclaim\n\nShare the same page flag bit for PG_readahead and PG_reclaim.\n\nOne is used only on file reads, another is only for emergency writes. One\nis used mostly for fresh/young pages, another is for old pages.\n\nCombinations of possible interactions are:\n\na) clear PG_reclaim \u003d\u003e implicit clear of PG_readahead\n\tit will delay an asynchronous readahead into a synchronous one\n\tit actually does _good_ for readahead:\n\t\tthe pages will be reclaimed soon, it\u0027s readahead thrashing!\n\t\tin this case, synchronous readahead makes more sense.\n\nb) clear PG_readahead \u003d\u003e implicit clear of PG_reclaim\n\tone(and only one) page will not be reclaimed in time\n\tit can be avoided by checking PageWriteback(page) in readahead first\n\nc) set PG_reclaim \u003d\u003e implicit set of PG_readahead\n\twill confuse readahead and make it restart the size rampup process\n\tit\u0027s a trivial problem, and can mostly be avoided by checking\n\tPageWriteback(page) first in readahead\n\nd) set PG_readahead \u003d\u003e implicit set of PG_reclaim\n\tPG_readahead will never be set on already cached pages.\n\tPG_reclaim will always be cleared on dirtying a page.\n\tso not a problem.\n\nIn summary,\n\ta) we get better behavior\n\tb,d) possible interactions can be avoided\n\tc) racy condition exists that might affect readahead, but the chance\n\t is _really_ low, and the hurt on readahead is trivial.\n\nCompound pages also use PG_reclaim, but for now they do not interact with\nreclaim/readahead code.\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c743d96b6d2ff55a94df7b5ac7c74987bb9c343b", "tree": "391e5dad21e62590e343c63e5ba05322d0fc76ad", "parents": [ "dc7868fcb9a73990e6f30371c1be465c436a7a7f" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Thu Jul 19 01:48:04 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:44 2007 -0700" }, "message": "readahead: remove the old algorithm\n\nRemove the old readahead algorithm.\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Steven Pratt \u003cslpratt@austin.ibm.com\u003e\nCc: Ram Pai \u003clinuxram@us.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3ea89ee86a82e9fbde37018d9b9e92a552e5fd13", "tree": "5fef7216ef39d66684754e4aadf368ce9adfd72e", "parents": [ "122a21d11cbfda6d1e33cbc8ae9e4c4ee2f1886e" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Thu Jul 19 01:48:02 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:44 2007 -0700" }, "message": "readahead: convert filemap invocations\n\nConvert filemap reads to use on-demand readahead.\n\nThe new call scheme is to\n- call readahead on non-cached page\n- call readahead on look-ahead page\n- update prev_index when finished with the read request\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Steven Pratt \u003cslpratt@austin.ibm.com\u003e\nCc: Ram Pai \u003clinuxram@us.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "122a21d11cbfda6d1e33cbc8ae9e4c4ee2f1886e", "tree": "e13f4e2dd0f838f5f922ed047e5ee56bf3546f21", "parents": [ "5ce1110b92b31d079aa443e967f43a2294e01194" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Thu Jul 19 01:48:01 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:44 2007 -0700" }, "message": "readahead: on-demand readahead logic\n\nThis is a minimal readahead algorithm that aims to replace the current one.\nIt is more flexible and reliable, while maintaining almost the same behavior\nand performance. Also it is full integrated with adaptive readahead.\n\nIt is designed to be called on demand:\n\t- on a missing page, to do synchronous readahead\n\t- on a lookahead page, to do asynchronous readahead\n\nIn this way it eliminated the awkward workarounds for cache hit/miss,\nreadahead thrashing, retried read, and unaligned read. It also adopts the\ndata structure introduced by adaptive readahead, parameterizes readahead\npipelining with `lookahead_index\u0027, and reduces the current/ahead windows to\none single window.\n\nHEURISTICS\n\nThe logic deals with four cases:\n\n\t- sequential-next\n\t\tfound a consistent readahead window, so push it forward\n\n\t- random\n\t\tstandalone small read, so read as is\n\n\t- sequential-first\n\t\tcreate a new readahead window for a sequential/oversize request\n\n\t- lookahead-clueless\n\t\thit a lookahead page not associated with the readahead window,\n\t\tso create a new readahead window and ramp it up\n\nIn each case, three parameters are determined:\n\n\t- readahead index: where the next readahead begins\n\t- readahead size: how much to readahead\n\t- lookahead size: when to do the next readahead (for pipelining)\n\nBEHAVIORS\n\nThe old behaviors are maximally preserved for trivial sequential/random reads.\nNotable changes are:\n\n\t- It no longer imposes strict sequential checks.\n\t It might help some interleaved cases, and clustered random reads.\n\t It does introduce risks of a random lookahead hit triggering an\n\t unexpected readahead. But in general it is more likely to do good\n\t than to do evil.\n\n\t- Interleaved reads are supported in a minimal way.\n\t Their chances of being detected and proper handled are still low.\n\n\t- Readahead thrashings are better handled.\n\t The current readahead leads to tiny average I/O sizes, because it\n\t never turn back for the thrashed pages. They have to be fault in\n\t by do_generic_mapping_read() one by one. Whereas the on-demand\n\t readahead will redo readahead for them.\n\nOVERHEADS\n\nThe new code reduced the overheads of\n\n\t- excessively calling the readahead routine on small sized reads\n\t (the current readahead code insists on seeing all requests)\n\n\t- doing a lot of pointless page-cache lookups for small cached files\n\t (the current readahead only turns itself off after 256 cache hits,\n\t unfortunately most files are \u003c 1MB, so never see that chance)\n\nThat accounts for speedup of\n\t- 0.3% on 1-page sequential reads on sparse file\n\t- 1.2% on 1-page cache hot sequential reads\n\t- 3.2% on 256-page cache hot sequential reads\n\t- 1.3% on cache hot `tar /lib`\n\nHowever, it does introduce one extra page-cache lookup per cache miss, which\nimpacts random reads slightly. That\u0027s 1% overheads for 1-page random reads on\nsparse file.\n\nPERFORMANCE\n\nThe basic benchmark setup is\n\t- 2.6.20 kernel with on-demand readahead\n\t- 1MB max readahead size\n\t- 2.9GHz Intel Core 2 CPU\n\t- 2GB memory\n\t- 160G/8M Hitachi SATA II 7200 RPM disk\n\nThe benchmarks show that\n\t- it maintains the same performance for trivial sequential/random reads\n\t- sysbench/OLTP performance on MySQL gains up to 8%\n\t- performance on readahead thrashing gains up to 3 times\n\niozone throughput (KB/s): roughly the same\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\niozone -c -t1 -s 4096m -r 64k\n\n\t\t\t 2.6.20 on-demand gain\nfirst run\n\t \" Initial write \" 61437.27 64521.53 +5.0%\n\t \" Rewrite \" 47893.02 48335.20 +0.9%\n\t \" Read \" 62111.84 62141.49 +0.0%\n\t \" Re-read \" 62242.66 62193.17 -0.1%\n\t \" Reverse Read \" 50031.46 49989.79 -0.1%\n\t \" Stride read \" 8657.61 8652.81 -0.1%\n\t \" Random read \" 13914.28 13898.23 -0.1%\n\t \" Mixed workload \" 19069.27 19033.32 -0.2%\n\t \" Random write \" 14849.80 14104.38 -5.0%\n\t \" Pwrite \" 62955.30 65701.57 +4.4%\n\t \" Pread \" 62209.99 62256.26 +0.1%\n\nsecond run\n\t \" Initial write \" 60810.31 66258.69 +9.0%\n\t \" Rewrite \" 49373.89 57833.66 +17.1%\n\t \" Read \" 62059.39 62251.28 +0.3%\n\t \" Re-read \" 62264.32 62256.82 -0.0%\n\t \" Reverse Read \" 49970.96 50565.72 +1.2%\n\t \" Stride read \" 8654.81 8638.45 -0.2%\n\t \" Random read \" 13901.44 13949.91 +0.3%\n\t \" Mixed workload \" 19041.32 19092.04 +0.3%\n\t \" Random write \" 14019.99 14161.72 +1.0%\n\t \" Pwrite \" 64121.67 68224.17 +6.4%\n\t \" Pread \" 62225.08 62274.28 +0.1%\n\nIn summary, writes are unstable, reads are pretty close on average:\n\n\t\t\t access pattern 2.6.20 on-demand gain\n\t\t\t\t Read 62085.61 62196.38 +0.2%\n\t\t\t\tRe-read 62253.49 62224.99 -0.0%\n\t\t\t Reverse Read 50001.21 50277.75 +0.6%\n\t\t\t Stride read 8656.21 8645.63 -0.1%\n\t\t\t Random read 13907.86 13924.07 +0.1%\n\t \t\t Mixed workload 19055.29 19062.68 +0.0%\n\t\t\t\t Pread 62217.53 62265.27 +0.1%\n\naio-stress: roughly the same\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\naio-stress -l -s4096 -r128 -t1 -o1 knoppix511-dvd-cn.iso\naio-stress -l -s4096 -r128 -t1 -o3 knoppix511-dvd-cn.iso\n\n\t\t\t\t\t2.6.20 on-demand delta\n\t\t\tsequential\t 92.57s 92.54s -0.0%\n\t\t\trandom\t\t311.87s 312.15s +0.1%\n\nsysbench fileio: roughly the same\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\nsysbench --test\u003dfileio --file-io-mode\u003dasync --file-test-mode\u003drndrw \\\n\t --file-total-size\u003d4G --file-block-size\u003d64K \\\n\t --num-threads\u003d001 --max-requests\u003d10000 --max-time\u003d900 run\n\n\t\t\t\tthreads 2.6.20 on-demand delta\n\t\tfirst run\n\t\t\t\t 1 59.1974s 59.2262s +0.0%\n\t\t\t\t 2 58.0575s 58.2269s +0.3%\n\t\t\t\t 4 48.0545s 47.1164s -2.0%\n\t\t\t\t 8 41.0684s 41.2229s +0.4%\n\t\t\t\t 16 35.8817s 36.4448s +1.6%\n\t\t\t\t 32 32.6614s 32.8240s +0.5%\n\t\t\t\t 64 23.7601s 24.1481s +1.6%\n\t\t\t\t 128 24.3719s 23.8225s -2.3%\n\t\t\t\t 256 23.2366s 22.0488s -5.1%\n\n\t\tsecond run\n\t\t\t\t 1 59.6720s 59.5671s -0.2%\n\t\t\t\t 8 41.5158s 41.9541s +1.1%\n\t\t\t\t 64 25.0200s 23.9634s -4.2%\n\t\t\t\t 256 22.5491s 20.9486s -7.1%\n\nNote that the numbers are not very stable because of the writes.\nThe overall performance is close when we sum all seconds up:\n\n sum all up 495.046s 491.514s -0.7%\n\nsysbench oltp (trans/sec): up to 8% gain\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\nsysbench --test\u003doltp --oltp-table-size\u003d10000000 --oltp-read-only \\\n\t --mysql-socket\u003d/var/run/mysqld/mysqld.sock \\\n\t --mysql-user\u003droot --mysql-password\u003dreadahead \\\n\t --num-threads\u003d064 --max-requests\u003d10000 --max-time\u003d900 run\n\n\t10000-transactions run\n\t\t\t\tthreads 2.6.20 on-demand gain\n\t\t\t\t 1 62.81 64.56 +2.8%\n\t\t\t\t 2 67.97 70.93 +4.4%\n\t\t\t\t 4 81.81 85.87 +5.0%\n\t\t\t\t 8 94.60 97.89 +3.5%\n\t\t\t\t 16 99.07 104.68 +5.7%\n\t\t\t\t 32 95.93 104.28 +8.7%\n\t\t\t\t 64 96.48 103.68 +7.5%\n\t5000-transactions run\n\t\t\t\t 1 48.21 48.65 +0.9%\n\t\t\t\t 8 68.60 70.19 +2.3%\n\t\t\t\t 64 70.57 74.72 +5.9%\n\t2000-transactions run\n\t\t\t\t 1 37.57 38.04 +1.3%\n\t\t\t\t 2 38.43 38.99 +1.5%\n\t\t\t\t 4 45.39 46.45 +2.3%\n\t\t\t\t 8 51.64 52.36 +1.4%\n\t\t\t\t 16 54.39 55.18 +1.5%\n\t\t\t\t 32 52.13 54.49 +4.5%\n\t\t\t\t 64 54.13 54.61 +0.9%\n\nThat\u0027s interesting results. Some investigations show that\n\t- MySQL is accessing the db file non-uniformly: some parts are\n\t more hot than others\n\t- It is mostly doing 4-page random reads, and sometimes doing two\n\t reads in a row, the latter one triggers a 16-page readahead.\n\t- The on-demand readahead leaves many lookahead pages (flagged\n\t PG_readahead) there. Many of them will be hit, and trigger\n\t more readahead pages. Which might save more seeks.\n\t- Naturally, the readahead windows tend to lie in hot areas,\n\t and the lookahead pages in hot areas is more likely to be hit.\n\t- The more overall read density, the more possible gain.\n\nThat also explains the adaptive readahead tricks for clustered random reads.\n\nreadahead thrashing: 3 times better\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\nWe boot kernel with \"mem\u003d128m single\", and start a 100KB/s stream on every\nsecond, until reaching 200 streams.\n\n\t\t\t max throughput min avg I/O size\n\t\t2.6.20: 5MB/s 16KB\n\t\ton-demand: 15MB/s 140KB\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Steven Pratt \u003cslpratt@austin.ibm.com\u003e\nCc: Ram Pai \u003clinuxram@us.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5ce1110b92b31d079aa443e967f43a2294e01194", "tree": "eff95b4c8ede07d0777ca68a30d686d1acbb5c73", "parents": [ "f615bfca468c9b80ed2d09be5fdbaf470a32c045" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Thu Jul 19 01:47:59 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:44 2007 -0700" }, "message": "readahead: data structure and routines\n\nExtend struct file_ra_state to support the on-demand readahead logic. Also\ndefine some helpers for it.\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Steven Pratt \u003cslpratt@austin.ibm.com\u003e\nCc: Ram Pai \u003clinuxram@us.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f615bfca468c9b80ed2d09be5fdbaf470a32c045", "tree": "4771fd91ae020efaafbe653ad78ba5e32d56e8a3", "parents": [ "46fc3e7b4e7233a0ac981ac9084b55217318d04d" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Thu Jul 19 01:47:58 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:43 2007 -0700" }, "message": "readahead: MIN_RA_PAGES/MAX_RA_PAGES macros\n\nDefine two convenient macros for read-ahead:\n\t- MAX_RA_PAGES: rounded down counterpart of VM_MAX_READAHEAD\n\t- MIN_RA_PAGES: rounded _up_ counterpart of VM_MIN_READAHEAD\n\nNote that the rounded up MIN_RA_PAGES will work flawlessly with _large_\npage sizes like 64k.\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Steven Pratt \u003cslpratt@austin.ibm.com\u003e\nCc: Ram Pai \u003clinuxram@us.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "46fc3e7b4e7233a0ac981ac9084b55217318d04d", "tree": "555bededb43671605fa085d3b4d330d31aa4af5c", "parents": [ "d77c2d7cc5126639a47d73300b40d461f2811a0f" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Thu Jul 19 01:47:57 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:43 2007 -0700" }, "message": "readahead: add look-ahead support to __do_page_cache_readahead()\n\nAdd look-ahead support to __do_page_cache_readahead().\n\nIt works by\n\t- mark the Nth backwards page with PG_readahead,\n\t(which instructs the page\u0027s first reader to invoke readahead)\n\t- and only do the marking for newly allocated pages.\n\t(to prevent blindly doing readahead on already cached pages)\n\nLook-ahead is a technique to achieve I/O pipelining:\n\nWhile the application is working through a chunk of cached pages, the kernel\nreads-ahead the next chunk of pages _before_ time of need. It effectively\nhides low level I/O latencies to high level applications.\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Steven Pratt \u003cslpratt@austin.ibm.com\u003e\nCc: Ram Pai \u003clinuxram@us.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d77c2d7cc5126639a47d73300b40d461f2811a0f", "tree": "d02b32ca92fde9a04be9bee0f0b7c8961479448c", "parents": [ "2ba2d00363975242dee9bb22cf798b487e3cd61e" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Thu Jul 19 01:47:55 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:43 2007 -0700" }, "message": "readahead: introduce PG_readahead\n\nIntroduce a new page flag: PG_readahead.\n\nIt acts as a look-ahead mark, which tells the page reader: Hey, it\u0027s time to\ninvoke the read-ahead logic. For the sake of I/O pipelining, don\u0027t wait until\nit runs out of cached pages!\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Steven Pratt \u003cslpratt@austin.ibm.com\u003e\nCc: Ram Pai \u003clinuxram@us.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3ee6dafc677a68e461a7ddafc94a580ebab80735", "tree": "6a92c9f5bd24ff80c52c944327c3b065234f7ad2", "parents": [ "bb2d5ce16409efcdf94017a6b6fecd468226e29c" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Thu Jul 19 01:47:24 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:41 2007 -0700" }, "message": "only allow nonlinear vmas for ram backed filesystems\n\npage_mkclean() doesn\u0027t re-protect ptes for non-linear mappings, so a later\nre-dirty through such a mapping will not generate a fault, PG_dirty will\nnot reflect the dirty state and the dirty count will be skewed. This\nimplies that msync() is also currently broken for nonlinear mappings.\n\nThe easiest solution is to emulate remap_file_pages on non-linear mappings\nwith simple mmap() for non ram-backed filesystems. Applications continue\nto work (albeit slower), as long as the number of remappings remain below\nthe maximum vma count.\n\nHowever all currently known real uses of non-linear mappings are for ram\nbacked filesystems, which this patch doesn\u0027t affect.\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: William Lee Irwin III \u003cwli@holomorphy.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "79352894b28550ee0eee919149f57626ec1b3572", "tree": "849e6aa148c69b9df3920199255ca14792eeffa2", "parents": [ "83c54070ee1a2d05c89793884bea1a03f2851ed4" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Jul 19 01:47:22 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:41 2007 -0700" }, "message": "mm: fix clear_page_dirty_for_io vs fault race\n\nFix msync data loss and (less importantly) dirty page accounting\ninaccuracies due to the race remaining in clear_page_dirty_for_io().\n\nThe deleted comment explains what the race was, and the added comments\nexplain how it is fixed.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "83c54070ee1a2d05c89793884bea1a03f2851ed4", "tree": "dc732f5a9b93fb7004ed23f551bd98b77cc580e0", "parents": [ "d0217ac04ca6591841e5665f518e38064f4e65bd" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Jul 19 01:47:05 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:41 2007 -0700" }, "message": "mm: fault feedback #2\n\nThis patch completes Linus\u0027s wish that the fault return codes be made into\nbit flags, which I agree makes everything nicer. This requires requires\nall handle_mm_fault callers to be modified (possibly the modifications\nshould go further and do things like fault accounting in handle_mm_fault --\nhowever that would be for another patch).\n\n[akpm@linux-foundation.org: fix alpha build]\n[akpm@linux-foundation.org: fix s390 build]\n[akpm@linux-foundation.org: fix sparc build]\n[akpm@linux-foundation.org: fix sparc64 build]\n[akpm@linux-foundation.org: fix ia64 build]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Richard Henderson \u003crth@twiddle.net\u003e\nCc: Ivan Kokshaysky \u003cink@jurassic.park.msu.ru\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nCc: Ian Molton \u003cspyro@f2s.com\u003e\nCc: Bryan Wu \u003cbryan.wu@analog.com\u003e\nCc: Mikael Starvik \u003cstarvik@axis.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Yoshinori Sato \u003cysato@users.sourceforge.jp\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Hirokazu Takata \u003ctakata@linux-m32r.org\u003e\nCc: Geert Uytterhoeven \u003cgeert@linux-m68k.org\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: Greg Ungerer \u003cgerg@uclinux.org\u003e\nCc: Matthew Wilcox \u003cwilly@debian.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Kazumoto Kojima \u003ckkojima@rr.iij4u.or.jp\u003e\nCc: Richard Curnow \u003crc@rc0.org.uk\u003e\nCc: William Lee Irwin III \u003cwli@holomorphy.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Jeff Dike \u003cjdike@addtoit.com\u003e\nCc: Paolo \u0027Blaisorblade\u0027 Giarrusso \u003cblaisorblade@yahoo.it\u003e\nCc: Miles Bader \u003cuclinux-v850@lsi.nec.co.jp\u003e\nCc: Chris Zankel \u003cchris@zankel.net\u003e\nAcked-by: Kyle McMartin \u003ckyle@mcmartin.ca\u003e\nAcked-by: Haavard Skinnemoen \u003chskinnemoen@atmel.com\u003e\nAcked-by: Ralf Baechle \u003cralf@linux-mips.org\u003e\nAcked-by: Andi Kleen \u003cak@muc.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\n[ Still apparently needs some ARM and PPC loving - Linus ]\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d0217ac04ca6591841e5665f518e38064f4e65bd", "tree": "d3309094bb734d34773f97d642593e298a5cfcfc", "parents": [ "ed2f2f9b3ff8debdf512f7687b232c3c1d7d60d7" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Jul 19 01:47:03 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:41 2007 -0700" }, "message": "mm: fault feedback #1\n\nChange -\u003efault prototype. We now return an int, which contains\nVM_FAULT_xxx code in the low byte, and FAULT_RET_xxx code in the next byte.\n FAULT_RET_ code tells the VM whether a page was found, whether it has been\nlocked, and potentially other things. This is not quite the way he wanted\nit yet, but that\u0027s changed in the next patch (which requires changes to\narch code).\n\nThis means we no longer set VM_CAN_INVALIDATE in the vma in order to say\nthat a page is locked which requires filemap_nopage to go away (because we\ncan no longer remain backward compatible without that flag), but we were\ngoing to do that anyway.\n\nstruct fault_data is renamed to struct vm_fault as Linus asked. address\nis now a void __user * that we should firmly encourage drivers not to use\nwithout really good reason.\n\nThe page is now returned via a page pointer in the vm_fault struct.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6967614761fd305b3414d9485d89dc2e0a407410", "tree": "498bd41e9cf8795535f597696dd2c834d79ffb44", "parents": [ "54cb8821de07f2ffcd28c380ce9b93d5784b40d7" ], "author": { "name": "Mark Fasheh", "email": "mark.fasheh@oracle.com", "time": "Thu Jul 19 01:47:00 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:41 2007 -0700" }, "message": "ocfs2: release page lock before calling -\u003epage_mkwrite\n\n__do_fault() was calling -\u003epage_mkwrite() with the page lock held, which\nviolates the locking rules for that callback. Release and retake the page\nlock around the callback to avoid deadlocking file systems which manually\ntake it.\n\nSigned-off-by: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "54cb8821de07f2ffcd28c380ce9b93d5784b40d7", "tree": "1de676534963d96af42863b20191bc9f80060dea", "parents": [ "d00806b183152af6d24f46f0c33f14162ca1262a" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Jul 19 01:46:59 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:41 2007 -0700" }, "message": "mm: merge populate and nopage into fault (fixes nonlinear)\n\nNonlinear mappings are (AFAIKS) simply a virtual memory concept that encodes\nthe virtual address -\u003e file offset differently from linear mappings.\n\n-\u003epopulate is a layering violation because the filesystem/pagecache code\nshould need to know anything about the virtual memory mapping. The hitch here\nis that the -\u003enopage handler didn\u0027t pass down enough information (ie. pgoff).\n But it is more logical to pass pgoff rather than have the -\u003enopage function\ncalculate it itself anyway (because that\u0027s a similar layering violation).\n\nHaving the populate handler install the pte itself is likewise a nasty thing\nto be doing.\n\nThis patch introduces a new fault handler that replaces -\u003enopage and\n-\u003epopulate and (later) -\u003enopfn. Most of the old mechanism is still in place\nso there is a lot of duplication and nice cleanups that can be removed if\neveryone switches over.\n\nThe rationale for doing this in the first place is that nonlinear mappings are\nsubject to the pagefault vs invalidate/truncate race too, and it seemed stupid\nto duplicate the synchronisation logic rather than just consolidate the two.\n\nAfter this patch, MAP_NONBLOCK no longer sets up ptes for pages present in\npagecache. Seems like a fringe functionality anyway.\n\nNOPAGE_REFAULT is removed. This should be implemented with -\u003efault, and no\nusers have hit mainline yet.\n\n[akpm@linux-foundation.org: cleanup]\n[randy.dunlap@oracle.com: doc. fixes for readahead]\n[akpm@linux-foundation.org: build fix]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d00806b183152af6d24f46f0c33f14162ca1262a", "tree": "36f829cf13d5410374a3f00b56ec0b1f8dc3ce3c", "parents": [ "589f1e81bde732dd0b1bc5d01b6bddd4bcb4527b" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Jul 19 01:46:57 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:41 2007 -0700" }, "message": "mm: fix fault vs invalidate race for linear mappings\n\nFix the race between invalidate_inode_pages and do_no_page.\n\nAndrea Arcangeli identified a subtle race between invalidation of pages from\npagecache with userspace mappings, and do_no_page.\n\nThe issue is that invalidation has to shoot down all mappings to the page,\nbefore it can be discarded from the pagecache. Between shooting down ptes to\na particular page, and actually dropping the struct page from the pagecache,\ndo_no_page from any process might fault on that page and establish a new\nmapping to the page just before it gets discarded from the pagecache.\n\nThe most common case where such invalidation is used is in file truncation.\nThis case was catered for by doing a sort of open-coded seqlock between the\nfile\u0027s i_size, and its truncate_count.\n\nTruncation will decrease i_size, then increment truncate_count before\nunmapping userspace pages; do_no_page will read truncate_count, then find the\npage if it is within i_size, and then check truncate_count under the page\ntable lock and back out and retry if it had subsequently been changed (ptl\nwill serialise against unmapping, and ensure a potentially updated\ntruncate_count is actually visible).\n\nComplexity and documentation issues aside, the locking protocol fails in the\ncase where we would like to invalidate pagecache inside i_size. do_no_page\ncan come in anytime and filemap_nopage is not aware of the invalidation in\nprogress (as it is when it is outside i_size). The end result is that\ndangling (-\u003emapping \u003d\u003d NULL) pages that appear to be from a particular file\nmay be mapped into userspace with nonsense data. Valid mappings to the same\nplace will see a different page.\n\nAndrea implemented two working fixes, one using a real seqlock, another using\na page-\u003eflags bit. He also proposed using the page lock in do_no_page, but\nthat was initially considered too heavyweight. However, it is not a global or\nper-file lock, and the page cacheline is modified in do_no_page to increment\n_count and _mapcount anyway, so a further modification should not be a large\nperformance hit. Scalability is not an issue.\n\nThis patch implements this latter approach. -\u003enopage implementations return\nwith the page locked if it is possible for their underlying file to be\ninvalidated (in that case, they must set a special vm_flags bit to indicate\nso). do_no_page only unlocks the page after setting up the mapping\ncompletely. invalidation is excluded because it holds the page lock during\ninvalidation of each page (and ensures that the page is not mapped while\nholding the lock).\n\nThis also allows significant simplifications in do_no_page, because we have\nthe page locked in the right place in the pagecache from the start.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5f4352fbffd6c45123dbce9e195efd54df4e177e", "tree": "e2a0316e2f2d22c266e7cae3015ddc0f2f77f64f", "parents": [ "bdef40a6af64a0140a65df49bf504124d57094a9" ], "author": { "name": "Jeremy Fitzhardinge", "email": "jeremy@xensource.com", "time": "Tue Jul 17 18:37:04 2007 -0700" }, "committer": { "name": "Jeremy Fitzhardinge", "email": "jeremy@goop.org", "time": "Wed Jul 18 08:47:41 2007 -0700" }, "message": "Allocate and free vmalloc areas\n\nAllocate/release a chunk of vmalloc address space:\n alloc_vm_area reserves a chunk of address space, and makes sure all\n the pagetables are constructed for that address range - but no pages.\n\n free_vm_area releases the address space range.\n\nSigned-off-by: Jeremy Fitzhardinge \u003cjeremy@xensource.com\u003e\nSigned-off-by: Ian Pratt \u003cian.pratt@xensource.com\u003e\nSigned-off-by: Christian Limpach \u003cChristian.Limpach@cl.cam.ac.uk\u003e\nSigned-off-by: Chris Wright \u003cchrisw@sous-sol.org\u003e\nCc: \"Jan Beulich\" \u003cJBeulich@novell.com\u003e\nCc: \"Andi Kleen\" \u003cak@muc.de\u003e\n" }, { "commit": "1e66df3ee301209f4a38df097d7cc5cb9b367a3f", "tree": "55beb2a342dbe08c0404f749e02808e3f09023ac", "parents": [ "8b4a40809e5330c9da5d20107d693d92d73b31dc" ], "author": { "name": "Jeremy Fitzhardinge", "email": "jeremy@xensource.com", "time": "Tue Jul 17 18:37:02 2007 -0700" }, "committer": { "name": "Jeremy Fitzhardinge", "email": "jeremy@goop.org", "time": "Wed Jul 18 08:47:39 2007 -0700" }, "message": "add kstrndup\n\nAdd a kstrndup function, modelled on strndup. Like strndup this\nreturns a string copied into its own allocated memory, but it copies\nno more than the specified number of bytes from the source.\n\nRemove private strndup() from irda code.\n\nSigned-off-by: Jeremy Fitzhardinge \u003cjeremy@xensource.com\u003e\nSigned-off-by: Chris Wright \u003cchrisw@sous-sol.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: YOSHIFUJI Hideaki \u003cyoshfuji@linux-ipv6.org\u003e\nCc: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@mandriva.com\u003e\nCc: Al Viro \u003cviro@ftp.linux.org.uk\u003e\nCc: Panagiotis Issaris \u003ctakis@issaris.org\u003e\nCc: Rene Scharfe \u003crene.scharfe@lsrfire.ath.cx\u003e\n" }, { "commit": "c2f1a551dea8b37c2e0cb886885c250fb703e9d8", "tree": "11a5f256703d856017ceb2268bd02b7b510dee30", "parents": [ "1e5140279f31e47d58ed6036ee61ba7a65710e63" ], "author": { "name": "Meelap Shah", "email": "meelap@umich.edu", "time": "Tue Jul 17 04:04:39 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:07 2007 -0700" }, "message": "knfsd: nfsd4: vary maximum delegation limit based on RAM size\n\nOur original NFSv4 delegation policy was to give out a read delegation on any\nopen when it was possible to.\n\nSince the lifetime of a delegation isn\u0027t limited to that of an open, a client\nmay quite reasonably hang on to a delegation as long as it has the inode\ncached. This becomes an obvious problem the first time a client\u0027s inode cache\napproaches the size of the server\u0027s total memory.\n\nOur first quick solution was to add a hard-coded limit. This patch makes a\nmild incremental improvement by varying that limit according to the server\u0027s\ntotal memory size, allowing at most 4 delegations per megabyte of RAM.\n\nMy quick back-of-the-envelope calculation finds that in the worst case (where\nevery delegation is for a different inode), a delegation could take about\n1.5K, which would make the worst case usage about 6% of memory. The new limit\nworks out to be about the same as the old on a 1-gig server.\n\n[akpm@linux-foundation.org: Don\u0027t needlessly bloat vmlinux]\n[akpm@linux-foundation.org: Make it right for highmem machines]\nSigned-off-by: \"J. Bruce Fields\" \u003cbfields@citi.umich.edu\u003e\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a569425512253992cc64ebf8b6d00a62f986db3e", "tree": "7ea72c75c54697bddbad807af89cc549d7426a69", "parents": [ "6dd4ac3b30b81b5bd0d628af1c89b7da689a38ea" ], "author": { "name": "Christoph Hellwig", "email": "hch@infradead.org", "time": "Tue Jul 17 04:04:28 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:06 2007 -0700" }, "message": "knfsd: exportfs: add exportfs.h header\n\ncurrently the export_operation structure and helpers related to it are in\nfs.h. fs.h is already far too large and there are very few places needing the\nexport bits, so split them off into a separate header.\n\n[akpm@linux-foundation.org: fix cifs build]\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nCc: Steven French \u003csfrench@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9281acea6a3687ff0f262e0be31eac34895b95d7", "tree": "f060d6e4f6a5da1c82bc789104683d39377a2e9a", "parents": [ "b45d52797432bd6b5d9786dbda940eb8d0b9ed06" ], "author": { "name": "Tejun Heo", "email": "htejun@gmail.com", "time": "Tue Jul 17 04:03:51 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:03 2007 -0700" }, "message": "kallsyms: make KSYM_NAME_LEN include space for trailing \u0027\\0\u0027\n\nKSYM_NAME_LEN is peculiar in that it does not include the space for the\ntrailing \u0027\\0\u0027, forcing all users to use KSYM_NAME_LEN + 1 when allocating\nbuffer. This is nonsense and error-prone. Moreover, when the caller\nforgets that it\u0027s very likely to subtly bite back by corrupting the stack\nbecause the last position of the buffer is always cleared to zero.\n\nThis patch increments KSYM_NAME_LEN by one and updates code accordingly.\n\n* off-by-one bug in asm-powerpc/kprobes.h::kprobe_lookup_name() macro\n is fixed.\n\n* Where MODULE_NAME_LEN and KSYM_NAME_LEN were used together,\n MODULE_NAME_LEN was treated as if it didn\u0027t include space for the\n trailing \u0027\\0\u0027. Fix it.\n\nSigned-off-by: Tejun Heo \u003chtejun@gmail.com\u003e\nAcked-by: Paulo Marques \u003cpmarques@grupopie.com\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2a7326b5bbafac4c96bcdb944b2a773593030b96", "tree": "25bc49eadea73cf2133198963d1baf3f5def7316", "parents": [ "831441862956fffa17b9801db37e6ea1650b0f69" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:37 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "CONFIG_BOUNCE to avoid useless inclusion of bounce buffer logic\n\nThe bounce buffer logic is included on systems that do not need it. If a\nsystem does not have zones like ZONE_DMA and ZONE_HIGHMEM that can lead to\nthe use of bounce buffers then there is no need to reserve memory pools etc\netc. This is true f.e. for SGI Altix.\n\nAlso nicifies the Makefile and gets rid of the tricky \"and\" there.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "831441862956fffa17b9801db37e6ea1650b0f69", "tree": "b0334921341f8f1734bdd3243de76d676329d21c", "parents": [ "787d2214c19bcc9b6ac48af0ce098277a801eded" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Tue Jul 17 04:03:35 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "Freezer: make kernel threads nonfreezable by default\n\nCurrently, the freezer treats all tasks as freezable, except for the kernel\nthreads that explicitly set the PF_NOFREEZE flag for themselves. This\napproach is problematic, since it requires every kernel thread to either\nset PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn\u0027t\ncare for the freezing of tasks at all.\n\nIt seems better to only require the kernel threads that want to or need to\nbe frozen to use some freezer-related code and to remove any\nfreezer-related code from the other (nonfreezable) kernel threads, which is\ndone in this patch.\n\nThe patch causes all kernel threads to be nonfreezable by default (ie. to\nhave PF_NOFREEZE set by default) and introduces the set_freezable()\nfunction that should be called by the freezable kernel threads in order to\nunset PF_NOFREEZE. It also makes all of the currently freezable kernel\nthreads call set_freezable(), so it shouldn\u0027t cause any (intentional)\nchange of behaviour to appear. Additionally, it updates documentation to\ndescribe the freezing of tasks more accurately.\n\n[akpm@linux-foundation.org: build fixes]\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nAcked-by: Nigel Cunningham \u003cnigel@nigel.suspend2.net\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "787d2214c19bcc9b6ac48af0ce098277a801eded", "tree": "a040604fdf9620a66dc83a0cde4f2140e2ec25b3", "parents": [ "a1ed3dda0ad181532f1e0f0d548067fb9fdddac4" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Jul 17 04:03:34 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "fs: introduce some page/buffer invariants\n\nIt is a bug to set a page dirty if it is not uptodate unless it has\nbuffers. If the page has buffers, then the page may be dirty (some buffers\ndirty) but not uptodate (some buffers not uptodate). The exception to this\nrule is if the set_page_dirty caller is racing with truncate or invalidate.\n\nA buffer can not be set dirty if it is not uptodate.\n\nIf either of these situations occurs, it indicates there could be some data\nloss problem. Some of these warnings could be a harmless one where the\npage or buffer is set uptodate immediately after it is dirtied, however we\nshould fix those up, and enforce this ordering.\n\nBring the order of operations for truncate into line with those of\ninvalidate. This will prevent a page from being able to go !uptodate while\nwe\u0027re holding the tree_lock, which is probably a good thing anyway.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a1ed3dda0ad181532f1e0f0d548067fb9fdddac4", "tree": "dbbb62a8a1816e24369caca1886576154b588340", "parents": [ "b5fab14e5d87df4d94161ae5f5e0c8625f9ffda2" ], "author": { "name": "Robert P. J. Day", "email": "rpjday@mindspring.com", "time": "Tue Jul 17 04:03:33 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "MM: Make needlessly global hugetlb_no_page() static.\n\nSigned-off-by: Robert P. J. Day \u003crpjday@mindspring.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8ab1372fac5684de56c68f0da1ddc90e1c4ce740", "tree": "42594d334c83ff18655731bf4d9f5d023c9c2886", "parents": [ "a0e1d1be204612ee83b3afe8aa24c5d27e63d464" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:32 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "SLUB: Fix CONFIG_SLUB_DEBUG use for CONFIG_NUMA\n\nWe currently cannot disable CONFIG_SLUB_DEBUG for CONFIG_NUMA. Now that\nembedded systems start to use NUMA we may need this.\n\nPut an #ifdef around places where NUMA only code uses fields only valid\nfor CONFIG_SLUB_DEBUG.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a0e1d1be204612ee83b3afe8aa24c5d27e63d464", "tree": "a32092a7eda82c84c5e195de5efd2cb6c0bff553", "parents": [ "434e245ddd3f14aa8eef97cae16c71b863ab092a" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:31 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "SLUB: Move sysfs operations outside of slub_lock\n\nSysfs can do a gazillion things when called. Make sure that we do not call\nany sysfs functions while holding the slub_lock.\n\nJust protect the essentials:\n\n1. The list of all slab caches\n2. The kmalloc_dma array\n3. The ref counters of the slabs.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "434e245ddd3f14aa8eef97cae16c71b863ab092a", "tree": "bbfd9d012416e6882fd714650435a78ce4f9da9b", "parents": [ "94f6030ca792c57422f04a73e7a872d8325946d3" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:30 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "SLUB: Do not allocate object bit array on stack\n\nThe objects per slab increase with the current patches in mm since we allow up\nto order 3 allocs by default. More patches in mm actually allow to use 2M or\nhigher sized slabs. For slab validation we need per object bitmaps in order\nto check a slab. We end up with up to 64k objects per slab resulting in a\npotential requirement of 8K stack space. That does not look good.\n\nAllocate the bit arrays via kmalloc.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "94f6030ca792c57422f04a73e7a872d8325946d3", "tree": "0197f24d82b1706f1b0521f2cf68feeff64123df", "parents": [ "81cda6626178cd55297831296ba8ecedbfd8b52d" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:29 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "Slab allocators: Replace explicit zeroing with __GFP_ZERO\n\nkmalloc_node() and kmem_cache_alloc_node() were not available in a zeroing\nvariant in the past. But with __GFP_ZERO it is possible now to do zeroing\nwhile allocating.\n\nUse __GFP_ZERO to remove the explicit clearing of memory via memset whereever\nwe can.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "81cda6626178cd55297831296ba8ecedbfd8b52d", "tree": "fa35a6a04db63080bbeb42f33f4b4a891b7fc96c", "parents": [ "ce15fea8274acca06daa1674322d37a7d3f0036b" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:29 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "Slab allocators: Cleanup zeroing allocations\n\nIt becomes now easy to support the zeroing allocs with generic inline\nfunctions in slab.h. Provide inline definitions to allow the continued use of\nkzalloc, kmem_cache_zalloc etc but remove other definitions of zeroing\nfunctions from the slab allocators and util.c.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ce15fea8274acca06daa1674322d37a7d3f0036b", "tree": "ade273da0bfdc0eadb176d847012ce1656b75c93", "parents": [ "12ad6843dd145050231ec5a27fe326c2085f9095" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:28 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: Do not use length parameter in slab_alloc()\n\nWe can get to the length of the object through the kmem_cache_structure. The\nadditional parameter does no good and causes the compiler to generate bad\ncode.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "12ad6843dd145050231ec5a27fe326c2085f9095", "tree": "36159963da99f44f34b6bb9c7c1a294b2a56642f", "parents": [ "5af328a51067d8dc574c2b2c2629dd436a1e841e" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:28 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: Style fix up the loop to disable small slabs\n\nDo proper spacing and we only need to do this in steps of 8.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5af328a51067d8dc574c2b2c2629dd436a1e841e", "tree": "ca1c305a1019eb49a9ead016e6e31aafc3ce8a46", "parents": [ "7b55f620e6908fec2d51751320c2a9459b5f375f" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue Jul 17 04:03:27 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "mm/slub.c: make code static\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7b55f620e6908fec2d51751320c2a9459b5f375f", "tree": "6fb32a7051b4358018fb26a3125e3b9621418abe", "parents": [ "f1b263393626fe66bee34ccdbf0487cd377e0213" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:27 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: Simplify dma index -\u003e size calculation\n\nThere is no need to caculate the dma slab size ourselves. We can simply\nlookup the size of the corresponding non dma slab.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f1b263393626fe66bee34ccdbf0487cd377e0213", "tree": "c144c6f8c0fd8f5eeeac1504bf7204c09938135f", "parents": [ "dfce8648d64c07eade40d456d59cb4bfcbba008c" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:26 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: faster more efficient slab determination for __kmalloc\n\nkmalloc_index is a long series of comparisons. The attempt to replace\nkmalloc_index with something more efficient like ilog2 failed due to compiler\nissues with constant folding on gcc 3.3 / powerpc.\n\nkmalloc_index()\u0027es long list of comparisons works fine for constant folding\nsince all the comparisons are optimized away. However, SLUB also uses\nkmalloc_index to determine the slab to use for the __kmalloc_xxx functions.\nThis leads to a large set of comparisons in get_slab().\n\nThe patch here allows to get rid of that list of comparisons in get_slab():\n\n1. If the requested size is larger than 192 then we can simply use\n fls to determine the slab index since all larger slabs are\n of the power of two type.\n\n2. If the requested size is smaller then we cannot use fls since there\n are non power of two caches to be considered. However, the sizes are\n in a managable range. So we divide the size by 8. Then we have only\n 24 possibilities left and then we simply look up the kmalloc index\n in a table.\n\nCode size of slub.o decreases by more than 200 bytes through this patch.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "dfce8648d64c07eade40d456d59cb4bfcbba008c", "tree": "7141882bd03d9848ec6299a48bc08796a8382062", "parents": [ "2e443fd003d76394a8ceb78f079260478aa10710" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:25 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: do proper locking during dma slab creation\n\nWe modify the kmalloc_cache_dma[] array without proper locking. Do the proper\nlocking and undo the dma cache creation if another processor has already\ncreated it.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2e443fd003d76394a8ceb78f079260478aa10710", "tree": "e67fe6e1382ec7a2f636ab09285a41620192eb9f", "parents": [ "0c710013200e72b5e0bc680ff4ec6bdac53c5ce8" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:24 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: extract dma_kmalloc_cache from get_cache.\n\nThe rarely used dma functionality in get_slab() makes the function too\ncomplex. The compiler begins to spill variables from the working set onto the\nstack. The created function is only used in extremely rare cases so make sure\nthat the compiler does not decide on its own to merge it back into get_slab().\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0c710013200e72b5e0bc680ff4ec6bdac53c5ce8", "tree": "160c44e8036e9ea65e7863271f925954d05ed091", "parents": [ "d07dbea46405b37d59495eb4de9d1056dcfb7c6d" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:24 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "SLUB: add some more inlines and #ifdef CONFIG_SLUB_DEBUG\n\nAdd #ifdefs around data structures only needed if debugging is compiled into\nSLUB.\n\nAdd inlines to small functions to reduce code size.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d07dbea46405b37d59495eb4de9d1056dcfb7c6d", "tree": "221376c8c5509a88f8942246180685d5c01baf46", "parents": [ "6cb8f91320d3e720351c21741da795fed580b21b" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Jul 17 04:03:23 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:01 2007 -0700" }, "message": "Slab allocators: support __GFP_ZERO in all allocators\n\nA kernel convention for many allocators is that if __GFP_ZERO is passed to an\nallocator then the allocated memory should be zeroed.\n\nThis is currently not supported by the slab allocators. The inconsistency\nmakes it difficult to implement in derived allocators such as in the uncached\nallocator and the pool allocators.\n\nIn addition the support zeroed allocations in the slab allocators does not\nhave a consistent API. There are no zeroing allocator functions for NUMA node\nplacement (kmalloc_node, kmem_cache_alloc_node). The zeroing allocations are\nonly provided for default allocs (kzalloc, kmem_cache_zalloc_node).\n__GFP_ZERO will make zeroing universally available and does not require any\naddititional functions.\n\nSo add the necessary logic to all slab allocators to support __GFP_ZERO.\n\nThe code is added to the hot path. The gfp flags are on the stack and so the\ncacheline is readily available for checking if we want a zeroed object.\n\nZeroing while allocating is now a frequent operation and we seem to be\ngradually approaching a 1-1 parity between zeroing and not zeroing allocs.\nThe current tree has 3476 uses of kmalloc vs 2731 uses of kzalloc.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" } ], "next": "6cb8f91320d3e720351c21741da795fed580b21b" }