)]}' { "log": [ { "commit": "55144768e100b68447f44c5e5c9deb155ad661bd", "tree": "9889682ee3b64627ad9eb504f30672fad844752f", "parents": [ "03158cd7eb3374843de68421142ca5900df845d9" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:26 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:58 2007 -0700" }, "message": "fs: remove some AOP_TRUNCATED_PAGE\n\nprepare/commit_write no longer returns AOP_TRUNCATED_PAGE since OCFS2 and\nGFS2 were converted to the new aops, so we can make some simplifications\nfor that.\n\n[michal.k.k.piotrowski@gmail.com: fix warning]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Michael Halcrow \u003cmhalcrow@us.ibm.com\u003e\nCc: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nCc: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\nSigned-off-by: Michal Piotrowski \u003cmichal.k.k.piotrowski@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "89e107877b65bf6eff1d63a1302dee9a091586f5", "tree": "8a120a04c46f19229d1cf9b9c546f1818cf84c44", "parents": [ "7765ec26ae1c01bb29bedf910e4efcced8cc81d2" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:07 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:55 2007 -0700" }, "message": "fs: new cont helpers\n\nRework the generic block \"cont\" routines to handle the new aops. Supporting\ncont_prepare_write would take quite a lot of code to support, so remove it\ninstead (and we later convert all filesystems to use it).\n\nwrite_begin gets passed AOP_FLAG_CONT_EXPAND when called from\ngeneric_cont_expand, so filesystems can avoid the old hacks they used.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "674b892ede247ef4fb8d00918f02e29c32b9bbaf", "tree": "8e170040e64073932ba559cc31f3ec9802337406", "parents": [ "8268f5a7415d914fc855a86aa2284ac819dc6b2e" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:03 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:55 2007 -0700" }, "message": "mm: restore KERNEL_DS optimisations\n\nRestore the KERNEL_DS optimisation, especially helpful to the 2copy write\npath.\n\nThis may be a pretty questionable gain in most cases, especially after the\nlegacy 2copy write path is removed, but it doesn\u0027t cost much.\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": "afddba49d18f346e5cc2938b6ed7c512db18ca68", "tree": "4726e3d3b0e9e8e5b5d3b2b0cccb36446bbdf3ca", "parents": [ "637aff46f94a754207c80c8c64bf1b74f24b967d" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:01 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:55 2007 -0700" }, "message": "fs: introduce write_begin, write_end, and perform_write aops\n\nThese are intended to replace prepare_write and commit_write with more\nflexible alternatives that are also able to avoid the buffered write\ndeadlock problems efficiently (which prepare_write is unable to do).\n\n[mark.fasheh@oracle.com: API design contributions, code review and fixes]\n[akpm@linux-foundation.org: various fixes]\n[dmonakhov@sw.ru: new aop block_write_begin fix]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nSigned-off-by: Dmitriy Monakhov \u003cdmonakhov@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2f718ffc16c43a435d12919c75dbfad518abd056", "tree": "55588cb2815d844e9d0b2404cf8ceafe98b5c55d", "parents": [ "08291429cfa6258c4cd95d8833beb40f828b194e" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:59 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:55 2007 -0700" }, "message": "mm: buffered write iterator\n\nAdd an iterator data structure to operate over an iovec. Add usercopy\noperators needed by generic_file_buffered_write, and convert that function\nover.\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": "08291429cfa6258c4cd95d8833beb40f828b194e", "tree": "50a206f0f0e7a5400b44073107ff00517e6f50ac", "parents": [ "4a9e5ef1f4f15205e477817a5cefc34bd3f65f55" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:59 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "mm: fix pagecache write deadlocks\n\nModify the core write() code so that it won\u0027t take a pagefault while holding a\nlock on the pagecache page. There are a number of different deadlocks possible\nif we try to do such a thing:\n\n1. generic_buffered_write\n2. lock_page\n3. prepare_write\n4. unlock_page+vmtruncate\n5. copy_from_user\n6. mmap_sem(r)\n7. handle_mm_fault\n8. lock_page (filemap_nopage)\n9. commit_write\n10. unlock_page\n\na. sys_munmap / sys_mlock / others\nb. mmap_sem(w)\nc. make_pages_present\nd. get_user_pages\ne. handle_mm_fault\nf. lock_page (filemap_nopage)\n\n2,8\t- recursive deadlock if page is same\n2,8;2,8\t- ABBA deadlock is page is different\n2,6;b,f\t- ABBA deadlock if page is same\n\nThe solution is as follows:\n1. If we find the destination page is uptodate, continue as normal, but use\n atomic usercopies which do not take pagefaults and do not zero the uncopied\n tail of the destination. The destination is already uptodate, so we can\n commit_write the full length even if there was a partial copy: it does not\n matter that the tail was not modified, because if it is dirtied and written\n back to disk it will not cause any problems (uptodate *means* that the\n destination page is as new or newer than the copy on disk).\n\n1a. The above requires that fault_in_pages_readable correctly returns access\n information, because atomic usercopies cannot distinguish between\n non-present pages in a readable mapping, from lack of a readable mapping.\n\n2. If we find the destination page is non uptodate, unlock it (this could be\n made slightly more optimal), then allocate a temporary page to copy the\n source data into. Relock the destination page and continue with the copy.\n However, instead of a usercopy (which might take a fault), copy the data\n from the pinned temporary page via the kernel address space.\n\n(also, rename maxlen to seglen, because it was confusing)\n\nThis increases the CPU/memory copy cost by almost 50% on the affected\nworkloads. That will be solved by introducing a new set of pagecache write\naops in a subsequent patch.\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": "4a9e5ef1f4f15205e477817a5cefc34bd3f65f55", "tree": "51f52086ecbccc3f41955d8d12293ef7a566a05b", "parents": [ "eb2be189317d031895b5ca534fbf735eb546158b" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:58 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "mm: write iovec cleanup\n\nHide some of the open-coded nr_segs tests into the iovec helpers. This is all\nto simplify generic_file_buffered_write, because that gets more complex in the\nnext patch.\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": "eb2be189317d031895b5ca534fbf735eb546158b", "tree": "8f1eda7af3be7285244a6f1ad77682e90d403c7b", "parents": [ "64649a58919e66ec21792dbb6c48cb3da22cbd7f" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:57 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "mm: buffered write cleanup\n\nQuite a bit of code is used in maintaining these \"cached pages\" that are\nprobably pretty unlikely to get used. It would require a narrow race where\nthe page is inserted concurrently while this process is allocating a page\nin order to create the spare page. Then a multi-page write into an uncached\npart of the file, to make use of it.\n\nNext, the buffered write path (and others) uses its own LRU pagevec when it\nshould be just using the per-CPU LRU pagevec (which will cut down on both data\nand code size cacheline footprint). Also, these private LRU pagevecs are\nemptied after just a very short time, in contrast with the per-CPU pagevecs\nthat are persistent. Net result: 7.3 times fewer lru_lock acquisitions required\nto add the pages to pagecache for a bulk write (in 4K chunks).\n\n[this gets rid of some cond_resched() calls in readahead.c and mpage.c due\n to clashes in -mm. What put them there, and why? ]\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": "64649a58919e66ec21792dbb6c48cb3da22cbd7f", "tree": "054605b7da7bad43c299ef66de9d33fda87cd38d", "parents": [ "5fe172370687e03cc6ba8dca990b75db18ff9bb3" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:56 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "mm: trim more holes\n\nIf prepare_write fails with AOP_TRUNCATED_PAGE, or if commit_write fails, then\nwe may have failed the write operation despite prepare_write having\ninstantiated blocks past i_size. Fix this, and consolidate the trimming into\none place.\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": "5fe172370687e03cc6ba8dca990b75db18ff9bb3", "tree": "8ce000fee15fa9ccd4313018f7f9ab1ffbc8cdaa", "parents": [ "ae37461c70bc8c8416cad1bab13a9898ed030aa1" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:56 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "mm: debug write deadlocks\n\nAllow CONFIG_DEBUG_VM to switch off the prefaulting logic, to simulate the\nMakes the race much easier to hit.\n\nThis is useful for demonstration and testing purposes, but is removed in a\nsubsequent patch.\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": "ae37461c70bc8c8416cad1bab13a9898ed030aa1", "tree": "7ba24faab6f89651fd2b3d33563847764744d544", "parents": [ "6814d7a91289ceb143285975e244a8f00fd3a830" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Tue Oct 16 01:24:55 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "mm: clean up buffered write code\n\nRename some variables and fix some types.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\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": "6814d7a91289ceb143285975e244a8f00fd3a830", "tree": "e439e5d802d6ebaa73bac8b08c311ca60d4c8ee4", "parents": [ "4b49643fbb3fa8bf4910f82be02d45e94e8972a4" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Tue Oct 16 01:24:54 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "Revert \"[PATCH] generic_file_buffered_write(): deadlock on vectored write\"\n\nThis reverts commit 6527c2bdf1f833cc18e8f42bd97973d583e4aa83, which\nfixed the following bug:\n\n When prefaulting in the pages in generic_file_buffered_write(), we only\n faulted in the pages for the firts segment of the iovec. If the second of\n successive segment described a mmapping of the page into which we\u0027re\n write()ing, and that page is not up-to-date, the fault handler tries to lock\n the already-locked page (to bring it up to date) and deadlocks.\n\n An exploit for this bug is in writev-deadlock-demo.c, in\n http://www.zip.com.au/~akpm/linux/patches/stuff/ext3-tools.tar.gz.\n\n (These demos assume blocksize \u003c PAGE_CACHE_SIZE).\n\nThe problem with this fix is that it takes the kernel back to doing a single\nprepare_write()/commit_write() per iovec segment. So in the worst case we\u0027ll\nrun prepare_write+commit_write 1024 times where we previously would have run\nit once. The other problem with the fix is that it fix all the locking problems.\n\n\u003cinsert numbers obtained via ext3-tools\u0027s writev-speed.c here\u003e\n\nAnd apparently this change killed NFS overwrite performance, because, I\nsuppose, it talks to the server for each prepare_write+commit_write.\n\nSo just back that patch out - we\u0027ll be fixing the deadlock by other means.\n\nNick says: also it only ever actually papered over the bug, because after\nfaulting in the pages, they might be unmapped or reclaimed.\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": "4b49643fbb3fa8bf4910f82be02d45e94e8972a4", "tree": "ee3bc7881a1e0b71fa093254bb725ad467d8ef72", "parents": [ "41cb8ac025dbbf6782eae10d231e7e2336ad3724" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Tue Oct 16 01:24:54 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "Revert \"[PATCH] generic_file_buffered_write(): handle zero-length iovec segments\"\n\nThis reverts commit 81b0c8713385ce1b1b9058e916edcf9561ad76d6, which was\na bugfix against 6527c2bdf1f833cc18e8f42bd97973d583e4aa83 (\"[PATCH]\ngeneric_file_buffered_write(): deadlock on vectored write\"), which we\nalso revert.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\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": "41cb8ac025dbbf6782eae10d231e7e2336ad3724", "tree": "0070e26ee574338a4a3f56f574e1c126a4357c8e", "parents": [ "902aaed0d983dfd459fcb2b678608d4584782200" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:53 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "mm: revert KERNEL_DS buffered write optimisation\n\nRevert the patch from Neil Brown to optimise NFSD writev handling.\n\nCc: Neil Brown \u003cneilb@suse.de\u003e\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": "45726cb43d11b288c58243a26010f397054222f0", "tree": "ae1804a34f314be18865add063d660cf783e45be", "parents": [ "001281881067a5998384c6669bc8dbbbab8456c4" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:41 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:53 2007 -0700" }, "message": "mm: improve find_lock_page\n\nfind_lock_page does not need to recheck -\u003eindex because if the page is in the\nright mapping then the index must be the same. Also, tree_lock does not need\nto be retaken after the page is locked in order to test that -\u003emapping has not\nchanged, because holding the page lock pins its mapping.\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": "57f6b96c09c30e444e0d3fc3080feba037657a7b", "tree": "4b62e2f63352b74d6c9dd1ed1142b971dcd207e3", "parents": [ "b2c3843b1e25e2c67347c4671f33fbe6f5067e6b" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:37 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:53 2007 -0700" }, "message": "filemap: convert some unsigned long to pgoff_t\n\nConvert some \u0027unsigned long\u0027 to pgoff_t.\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": "b2c3843b1e25e2c67347c4671f33fbe6f5067e6b", "tree": "e1b161e5c7169baab8f71615879eb3b46ebe9a9e", "parents": [ "f2e189827a914b66e435e68b1c9e37775cb995ed" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:37 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:53 2007 -0700" }, "message": "filemap: trivial code cleanups\n\n- remove unused local next_index in do_generic_mapping_read()\n- remove a redudant page_cache_read() declaration\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": "7ff81078d8b9f3d05a27b7bd3786ffb1ef1b0d1f", "tree": "ac73cf0c8325783a28c4d16c783f6fd96d17be7c", "parents": [ "6b10c6c9fbfe754e8482efb8c8b84f8e40c0f2eb" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:35 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:52 2007 -0700" }, "message": "readahead: remove the local copy of ra in do_generic_mapping_read()\n\nThe local copy of ra in do_generic_mapping_read() can now go away.\n\nIt predates readanead(req_size). In a time when the readahead code was called\non *every* single page. Hence a local has to be made to reduce the chance of\nthe readahead state being overwritten by a concurrent reader. More details\nin: Linux: Random File I/O Regressions In 2.6\n\u003chttp://kerneltrap.org/node/3039\u003e\n\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\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": "f4e6b498d6e06742d72706ef50593a9c4dd72214", "tree": "74a573302b2ea086c0d21907175be604f110f5b1", "parents": [ "0bb7ba6b9c358c12084a3cbc6ac08c8d1e973937" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:33 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:52 2007 -0700" }, "message": "readahead: combine file_ra_state.prev_index/prev_offset into prev_pos\n\nCombine the file_ra_state members\n\t\t\t\tunsigned long prev_index\n\t\t\t\tunsigned int prev_offset\ninto\n\t\t\t\tloff_t prev_pos\n\nIt is more consistent and better supports huge files.\n\nThanks to Peter for the nice proposal!\n\n[akpm@linux-foundation.org: fix shift overflow]\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\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": "0bb7ba6b9c358c12084a3cbc6ac08c8d1e973937", "tree": "81dc745c660557af4d9ea8b9816846d0395ece20", "parents": [ "937085aa35cc873d427d250a1e304d641af24628" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:32 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:52 2007 -0700" }, "message": "readahead: mmap read-around simplification\n\nFold file_ra_state.mmap_hit into file_ra_state.mmap_miss and make it an int.\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": "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": "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": "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": "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": "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": "83c54070ee1a2d05c89793884bea1a03f2851ed4", "tree": "dc732f5a9b93fb7004ed23f551bd98b77cc580e0", "parents": [ "d0217ac04ca6591841e5665f518e38064f4e65bd" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Jul 19 01:47:05 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:41 2007 -0700" }, "message": "mm: fault feedback #2\n\nThis patch completes Linus\u0027s wish that the fault return codes be made into\nbit flags, which I agree makes everything nicer. This requires requires\nall handle_mm_fault callers to be modified (possibly the modifications\nshould go further and do things like fault accounting in handle_mm_fault --\nhowever that would be for another patch).\n\n[akpm@linux-foundation.org: fix alpha build]\n[akpm@linux-foundation.org: fix s390 build]\n[akpm@linux-foundation.org: fix sparc build]\n[akpm@linux-foundation.org: fix sparc64 build]\n[akpm@linux-foundation.org: fix ia64 build]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Richard Henderson \u003crth@twiddle.net\u003e\nCc: Ivan Kokshaysky \u003cink@jurassic.park.msu.ru\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nCc: Ian Molton \u003cspyro@f2s.com\u003e\nCc: Bryan Wu \u003cbryan.wu@analog.com\u003e\nCc: Mikael Starvik \u003cstarvik@axis.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Yoshinori Sato \u003cysato@users.sourceforge.jp\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Hirokazu Takata \u003ctakata@linux-m32r.org\u003e\nCc: Geert Uytterhoeven \u003cgeert@linux-m68k.org\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: Greg Ungerer \u003cgerg@uclinux.org\u003e\nCc: Matthew Wilcox \u003cwilly@debian.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Kazumoto Kojima \u003ckkojima@rr.iij4u.or.jp\u003e\nCc: Richard Curnow \u003crc@rc0.org.uk\u003e\nCc: William Lee Irwin III \u003cwli@holomorphy.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Jeff Dike \u003cjdike@addtoit.com\u003e\nCc: Paolo \u0027Blaisorblade\u0027 Giarrusso \u003cblaisorblade@yahoo.it\u003e\nCc: Miles Bader \u003cuclinux-v850@lsi.nec.co.jp\u003e\nCc: Chris Zankel \u003cchris@zankel.net\u003e\nAcked-by: Kyle McMartin \u003ckyle@mcmartin.ca\u003e\nAcked-by: Haavard Skinnemoen \u003chskinnemoen@atmel.com\u003e\nAcked-by: Ralf Baechle \u003cralf@linux-mips.org\u003e\nAcked-by: Andi Kleen \u003cak@muc.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\n[ Still apparently needs some ARM and PPC loving - Linus ]\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d0217ac04ca6591841e5665f518e38064f4e65bd", "tree": "d3309094bb734d34773f97d642593e298a5cfcfc", "parents": [ "ed2f2f9b3ff8debdf512f7687b232c3c1d7d60d7" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Jul 19 01:47:03 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:41 2007 -0700" }, "message": "mm: fault feedback #1\n\nChange -\u003efault prototype. We now return an int, which contains\nVM_FAULT_xxx code in the low byte, and FAULT_RET_xxx code in the next byte.\n FAULT_RET_ code tells the VM whether a page was found, whether it has been\nlocked, and potentially other things. This is not quite the way he wanted\nit yet, but that\u0027s changed in the next patch (which requires changes to\narch code).\n\nThis means we no longer set VM_CAN_INVALIDATE in the vma in order to say\nthat a page is locked which requires filemap_nopage to go away (because we\ncan no longer remain backward compatible without that flag), but we were\ngoing to do that anyway.\n\nstruct fault_data is renamed to struct vm_fault as Linus asked. address\nis now a void __user * that we should firmly encourage drivers not to use\nwithout really good reason.\n\nThe page is now returned via a page pointer in the vm_fault struct.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "54cb8821de07f2ffcd28c380ce9b93d5784b40d7", "tree": "1de676534963d96af42863b20191bc9f80060dea", "parents": [ "d00806b183152af6d24f46f0c33f14162ca1262a" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Jul 19 01:46:59 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:41 2007 -0700" }, "message": "mm: merge populate and nopage into fault (fixes nonlinear)\n\nNonlinear mappings are (AFAIKS) simply a virtual memory concept that encodes\nthe virtual address -\u003e file offset differently from linear mappings.\n\n-\u003epopulate is a layering violation because the filesystem/pagecache code\nshould need to know anything about the virtual memory mapping. The hitch here\nis that the -\u003enopage handler didn\u0027t pass down enough information (ie. pgoff).\n But it is more logical to pass pgoff rather than have the -\u003enopage function\ncalculate it itself anyway (because that\u0027s a similar layering violation).\n\nHaving the populate handler install the pte itself is likewise a nasty thing\nto be doing.\n\nThis patch introduces a new fault handler that replaces -\u003enopage and\n-\u003epopulate and (later) -\u003enopfn. Most of the old mechanism is still in place\nso there is a lot of duplication and nice cleanups that can be removed if\neveryone switches over.\n\nThe rationale for doing this in the first place is that nonlinear mappings are\nsubject to the pagefault vs invalidate/truncate race too, and it seemed stupid\nto duplicate the synchronisation logic rather than just consolidate the two.\n\nAfter this patch, MAP_NONBLOCK no longer sets up ptes for pages present in\npagecache. Seems like a fringe functionality anyway.\n\nNOPAGE_REFAULT is removed. This should be implemented with -\u003efault, and no\nusers have hit mainline yet.\n\n[akpm@linux-foundation.org: cleanup]\n[randy.dunlap@oracle.com: doc. fixes for readahead]\n[akpm@linux-foundation.org: build fix]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d00806b183152af6d24f46f0c33f14162ca1262a", "tree": "36f829cf13d5410374a3f00b56ec0b1f8dc3ce3c", "parents": [ "589f1e81bde732dd0b1bc5d01b6bddd4bcb4527b" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Jul 19 01:46:57 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:41 2007 -0700" }, "message": "mm: fix fault vs invalidate race for linear mappings\n\nFix the race between invalidate_inode_pages and do_no_page.\n\nAndrea Arcangeli identified a subtle race between invalidation of pages from\npagecache with userspace mappings, and do_no_page.\n\nThe issue is that invalidation has to shoot down all mappings to the page,\nbefore it can be discarded from the pagecache. Between shooting down ptes to\na particular page, and actually dropping the struct page from the pagecache,\ndo_no_page from any process might fault on that page and establish a new\nmapping to the page just before it gets discarded from the pagecache.\n\nThe most common case where such invalidation is used is in file truncation.\nThis case was catered for by doing a sort of open-coded seqlock between the\nfile\u0027s i_size, and its truncate_count.\n\nTruncation will decrease i_size, then increment truncate_count before\nunmapping userspace pages; do_no_page will read truncate_count, then find the\npage if it is within i_size, and then check truncate_count under the page\ntable lock and back out and retry if it had subsequently been changed (ptl\nwill serialise against unmapping, and ensure a potentially updated\ntruncate_count is actually visible).\n\nComplexity and documentation issues aside, the locking protocol fails in the\ncase where we would like to invalidate pagecache inside i_size. do_no_page\ncan come in anytime and filemap_nopage is not aware of the invalidation in\nprogress (as it is when it is outside i_size). The end result is that\ndangling (-\u003emapping \u003d\u003d NULL) pages that appear to be from a particular file\nmay be mapped into userspace with nonsense data. Valid mappings to the same\nplace will see a different page.\n\nAndrea implemented two working fixes, one using a real seqlock, another using\na page-\u003eflags bit. He also proposed using the page lock in do_no_page, but\nthat was initially considered too heavyweight. However, it is not a global or\nper-file lock, and the page cacheline is modified in do_no_page to increment\n_count and _mapcount anyway, so a further modification should not be a large\nperformance hit. Scalability is not an issue.\n\nThis patch implements this latter approach. -\u003enopage implementations return\nwith the page locked if it is possible for their underlying file to be\ninvalidated (in that case, they must set a special vm_flags bit to indicate\nso). do_no_page only unlocks the page after setting up the mapping\ncompletely. invalidation is excluded because it holds the page lock during\ninvalidation of each page (and ensures that the page is not mapped while\nholding the lock).\n\nThis also allows significant simplifications in do_no_page, because we have\nthe page locked in the right place in the pagecache from the start.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a32ea1e1f925399e0d81ca3f7394a44a6dafa12c", "tree": "fade44f4d7baf5695a856ad73e6b98f0d6edf9de", "parents": [ "e21ea246bce5bb93dd822de420172ec280aed492" ], "author": { "name": "NeilBrown", "email": "neilb@suse.de", "time": "Tue Jul 17 04:03:04 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:22:59 2007 -0700" }, "message": "Fix read/truncate race\n\ndo_generic_mapping_read currently samples the i_size at the start and doesn\u0027t\ndo so again unless it needs to call -\u003ereadpage to load a page. After\n-\u003ereadpage it has to re-sample i_size as a truncate may have caused that page\nto be filled with zeros, and the read() call should not see these.\n\nHowever there are other activities that might cause -\u003ereadpage to be called on\na page between the time that do_generic_mapping_read samples i_size and when\nit finds that it has an uptodate page. These include at least read-ahead and\npossibly another thread performing a read.\n\nSo do_generic_mapping_read must sample i_size *after* it has an uptodate page.\n Thus the current sampling at the start and after a read can be replaced with\na sampling before the copy-out.\n\nThe same change applied to __generic_file_splice_read.\n\nNote that this fixes any race with truncate_complete_page, but does not fix a\npossible race with truncate_partial_page. If a partial truncate happens after\ndo_generic_mapping_read samples i_size and before the copy_out, the nuls that\ntruncate_partial_page place in the page could be copied out incorrectly.\n\nI think the best fix for that is to *not* zero out parts of the page in\ntruncate_partial_page, but rather to zero out the tail of a page when\nincreasing i_size.\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nAcked-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "17973f5af741f1758ed57c5115ca394c22bee159", "tree": "0fd340e46f1fbae4ab7aa8d06b26af208a3e83f4", "parents": [ "1e3e8d91fee56e1ab598b265466dc38033f1b915" ], "author": { "name": "Micah Cowan", "email": "micah@cowan.name", "time": "Sun Jul 15 23:40:08 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:43 2007 -0700" }, "message": "Only send SIGXFSZ when exceeding rlimits.\n\nSome users have been having problems with utilities like cp or dd dumping\ncore when they try to copy a file that\u0027s too large for the destination\nfilesystem (typically, \u003e 4gb). Apparently, some defunct standards required\nSIGXFSZ to be sent in such circumstances, but SUS only requires/allows it\nfor when a written file exceeds the process\u0027s resource limits. I\u0027d like to\nlimit SIGXFSZs to the bare minimum required by SUS.\n\nPatch sent per http://lkml.org/lkml/2007/4/10/302\n\nSigned-off-by: Micah Cowan \u003cmicahcowan@ubuntu.com\u003e\nAcked-by: Alan Cox \u003calan@redhat.com\u003e\nCc: \u003creiserfs-dev@namesys.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c44939ecb6e05aeaaf12d4e1bb046719c97e457e", "tree": "5bf1bc2c4c518fb89271110a0e9fbb43d6f4c413", "parents": [ "5ed44a401ddfc60e11c3484e86f0c8285051139a" ], "author": { "name": "akpm@linux-foundation.org", "email": "akpm@linux-foundation.org", "time": "Sun Jul 15 23:38:25 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:37 2007 -0700" }, "message": "NeilBrown \u003cneilb@suse.de\u003e\n\nThe do_loop_readv_writev implementation of readv breaks out of the loop as\nsoon as a single read request didn\u0027t fill it\u0027s buffer:\n\n\t\tif (nr !\u003d len)\n\t\t\tbreak;\n\nThe generic_file_aio_read version doesn\u0027t. So if it hits EOF before the end\nof the list of buffers, it will try again on the next buffer. If the file was\nextended in the mean time, this will produce a bad result.\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "45426812d6b601430d560cb6049757b5b0bc71c4", "tree": "64c8439a53f4ca402a9d7deb2a455aa0de08c8ea", "parents": [ "f96efd585b8d847181f81bf16721f96ded18d9fe" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sun Jul 15 23:38:12 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:35 2007 -0700" }, "message": "mm: debug check for the fault vs invalidate race\n\nAdd a bugcheck for Andrea\u0027s pagefault vs invalidate race. This is triggerable\nfor both linear and nonlinear pages with a userspace test harness (using\ndirect IO and truncate, respectively).\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0452a4e5d021900b07ebdeecb9ed03b49f164f3f", "tree": "c03b50882723102bf51fade26f6a24d9dd0a182e", "parents": [ "5ffc4ef45b3b0a57872f631b4e4ceb8ace0d7496" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Jun 01 11:55:49 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jul 10 08:04:14 2007 +0200" }, "message": "sendfile: kill generic_file_sendfile()\n\nIt\u0027s no longer used.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "4e99325b462ba18075768582621af74a6b79d2a5", "tree": "c10d5cca6c42dda86faa3881e406475d8d645764", "parents": [ "95511ad4342cd094e62c807f6631b9a19cc6b129" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Sun Jul 08 01:13:06 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Jul 08 10:13:21 2007 -0700" }, "message": "mm: double mark_page_accessed() in read_cache_page_async()\n\nFix a post-2.6.21 regression.\n\nread_cache_page_async() has two invocations of mark_page_accessed() which will\nlaunch pages right onto the active list.\n\nRemove the first one, keeping the latter one. This avoids marking unwanted\npages active (in the retry loop).\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "43c0f3d25c602dc96b201ed81ffda0bc600ff969", "tree": "88ecad9eda4797693a97e0bcdf7ced13be99f3bd", "parents": [ "8382d2b9a7205fe1fb262f59237715a40c911880" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue May 15 23:57:09 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 16 21:19:15 2007 -0700" }, "message": "Fix: find_or_create_page skips cpuset memory spreading.\n\nWe call alloc_page where we should be calling __page_cache_alloc.\n\n__page_cache_alloc performs cpuset memory spreading. alloc_page does not.\nThere is no reason that pages allocated via find_or_create should be\nexempt.\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": "c855ff3718e5f667b463b20b9de516b4cd7625ad", "tree": "5f5f2db132c80705db2254fc8f2f222160228aa5", "parents": [ "aabded9c3aab5160ae2ca3dd1fa0fa37f3d510e4" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Wed May 09 13:42:20 2007 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 13:04:03 2007 -0700" }, "message": "Fix a bad error case handling in read_cache_page_async()\n\nCommit 6fe6900e1e5b6fa9e5c59aa5061f244fe3f467e2 introduced a nasty bug\nin read_cache_page_async().\n\nIt added a \"mark_page_accessed(page)\" at the final return path in\nread_cache_page_async(). But in error cases, \u0027page\u0027 holds the error\ncode, and you can\u0027t mark it accessed.\n\n[ and Glauber de Oliveira Costa points out that we can use a return\n instead of adding more goto\u0027s ]\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ef71c15c46a053818f7e69098ebb052b31ffa56b", "tree": "1136f1280e2a570a5c29486aef408473160c76b5", "parents": [ "9b04bd27564cfd7224e0135ba37df778f1d490bf" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Wed May 09 02:33:44 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:50 2007 -0700" }, "message": "AFS: export a couple of core functions for AFS write support\n\nExport a couple of core functions for AFS write support to use:\n\n\tfind_get_pages_contig()\n\tfind_get_pages_tag()\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": "ef51c97623b94f51e439ac91d2736aab3d1b6594", "tree": "5c020421f1e5a6e28b5a9f341fec32479a8ffb3a", "parents": [ "524e6752912a891a396a9cf74c5d7d60fff5510a" ], "author": { "name": "Mark Fasheh", "email": "mark.fasheh@oracle.com", "time": "Tue May 08 00:27:10 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:04 2007 -0700" }, "message": "Remove do_sync_file_range()\n\nRemove do_sync_file_range() and convert callers to just use\ndo_sync_mapping_range().\n\nSigned-off-by: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0ceb331433e8aad9c5f441a965d7c681f8b9046f", "tree": "fd3d679a4015242dd65f0721f52242ad47619910", "parents": [ "b46b8f19c9cd435ecac4d9d12b39d78c137ecd66" ], "author": { "name": "Dmitriy Monakhov", "email": "dmonakhov@openvz.org", "time": "Tue May 08 00:23:02 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:14:57 2007 -0700" }, "message": "mm: move common segment checks to separate helper function\n\n[akpm@linux-foundation.org: cleanup]\nSigned-off-by: Monakhov Dmitriy \u003cdmonakhov@openvz.org\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nAcked-by: Anton Altaparmakov \u003caia21@cam.ac.uk\u003e\nAcked-by: David Chinner \u003cdgc@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": "6ce745ed39d35f9d547d00d406db2be7c6c175b3", "tree": "16f471389c9f619c37891fdb6e1843e1f2721c78", "parents": [ "ec0f16372277052a29a6c17527c6cae5e898b3fd" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Sun May 06 14:49:26 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:52 2007 -0700" }, "message": "readahead: code cleanup\n\nRename file_ra_state.prev_page to prev_index and file_ra_state.offset to\nprev_offset. Also update of prev_index in do_generic_mapping_read() is now\nmoved close to the update of prev_offset.\n\n[wfg@mail.ustc.edu.cn: fix it]\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: WU Fengguang \u003cwfg@mail.ustc.edu.cn\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": "ec0f16372277052a29a6c17527c6cae5e898b3fd", "tree": "35636edac6ed01baf301f3aca96f090caae82c9d", "parents": [ "b813e931b4c8235bb42e301096ea97dbdee3e8fe" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Sun May 06 14:49:25 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:52 2007 -0700" }, "message": "readahead: improve heuristic detecting sequential reads\n\nIntroduce ra.offset and store in it an offset where the previous read\nended. This way we can detect whether reads are really sequential (and\nthus we should not mark the page as accessed repeatedly) or whether they\nare random and just happen to be in the same page (and the page should\nreally be marked accessed again).\n\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nAcked-by: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: WU Fengguang \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": "a8127717cb24be7b8827a8d9e0ddbfde6b392146", "tree": "3b7d5556f127263b600bbcb44437c4c1739c000a", "parents": [ "14e072984179d3d421bf9ab75cc67e0961742841" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sun May 06 14:49:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:52 2007 -0700" }, "message": "mm: simplify filemap_nopage\n\nIdentical block is duplicated twice: contrary to the comment, we have been\nre-reading the page *twice* in filemap_nopage rather than once.\n\nIf any retry logic or anything is needed, it belongs in lower levels anyway.\nOnly retry once. Linus agrees.\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": "6fe6900e1e5b6fa9e5c59aa5061f244fe3f467e2", "tree": "8bbfe5072279227cc50a941ad4813908082426a1", "parents": [ "714b8171af9c930a59a0da8f6fe50518e70ab035" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sun May 06 14:49:04 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:51 2007 -0700" }, "message": "mm: make read_cache_page synchronous\n\nEnsure pages are uptodate after returning from read_cache_page, which allows\nus to cut out most of the filesystem-internal PageUptodate calls.\n\nI didn\u0027t have a great look down the call chains, but this appears to fixes 7\npossible use-before uptodate in hfs, 2 in hfsplus, 1 in jfs, a few in\necryptfs, 1 in jffs2, and a possible cleared data overwritten with readpage in\nblock2mtd. All depending on whether the filler is async and/or can return\nwith a !uptodate page.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "65b8291c4000e5f38fc94fb2ca0cb7e8683c8a1b", "tree": "aeebdb654ce5db3cf02a9110e3b2db7e7aef06f0", "parents": [ "00e9fa2d6421fbbefb4c02821a1e779a3ce47781" ], "author": { "name": "Zach Brown", "email": "zach.brown@oracle.com", "time": "Fri Mar 16 13:38:11 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Mar 16 19:25:04 2007 -0700" }, "message": "[PATCH] dio: invalidate clean pages before dio write\n\nThis patch fixes a user-triggerable oops that was reported by Leonid\nAnaniev as archived at http://lkml.org/lkml/2007/2/8/337.\n\ndio writes invalidate clean pages that intersect the written region so that\nsubsequent buffered reads go to disk to read the new data. If this fails\nthe interface tries to tell the caller that the cache is inconsistent by\nreturning EIO.\n\nBefore this patch we had the problem where this invalidation failure would\nclobber -EIOCBQUEUED as it made its way from fs/direct-io.c to fs/aio.c.\nBoth fs/aio.c and bio completion call aio_complete() and we reference freed\nmemory, usually oopsing.\n\nThis patch addresses this problem by invalidating before the write so that\nwe can cleanly return -EIO before -\u003edirect_IO() has had a chance to return\n-EIOCBQUEUED.\n\nThere is a compromise here. During the dio write we can fault in mmap()ed\npages which intersect the written range with get_user_pages() if the user\nprovided them for the source buffer. This is a crazy thing to do, but we\ncan make it mostly work in most cases by trying the invalidation again.\nThe compromise is that we won\u0027t return an error if this second invalidation\nfails if it\u0027s an AIO write and we have -EIOCBQUEUED.\n\nThis was tested by having two processes race performing large O_DIRECT and\nbuffered ordered writes. Within minutes ext3 would see a race between\next3_releasepage() and jbd holding a reference on ordered data buffers and\nwould cause invalidation to fail, panicing the box. The test can be found\nin the \u0027aio_dio_bugs\u0027 test group in test.kernel.org/autotest. After this\npatch the test passes.\n\nSigned-off-by: Zach Brown \u003czach.brown@oracle.com\u003e\nSigned-off-by: Benjamin LaHaise \u003cbcrl@kvack.org\u003e\nCc: Leonid Ananiev \u003cleonid.i.ananiev@linux.intel.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": "29dbb3fc8020f025bc38b262ec494e19fd3eac02", "tree": "579877f8d80e04e0908253b782b8e58c742b3fe6", "parents": [ "3160a711ef754758e7f85ae371cf900252c1a392" ], "author": { "name": "NeilBrown", "email": "neilb@suse.de", "time": "Fri Feb 16 01:28:38 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 16 08:14:01 2007 -0800" }, "message": "[PATCH] knfsd: stop NFSD writes from being broken into lots of little writes to filesystem\n\nWhen NFSD receives a write request, the data is typically in a number of\n1448 byte segments and writev is used to collect them together.\n\nUnfortunately, generic_file_buffered_write passes these to the filesystem\none at a time, so an e.g. 32K over-write becomes a series of partial-page\nwrites to each page, causing the filesystem to have to pre-read those pages\n- wasted effort.\n\ngeneric_file_buffered_write handles one segment of the vector at a time as\nit has to pre-fault in each segment to avoid deadlocks. When writing from\nkernel-space (and nfsd does) this is not an issue, so\ngeneric_file_buffered_write does not need to break and iovec from nfsd into\nlittle pieces.\n\nThis patch avoids the splitting when get_fs is KERNEL_DS as it is\nfrom NFSd.\n\nThis issue was introduced by commit 6527c2bdf1f833cc18e8f42bd97973d583e4aa83\n\nAcked-by: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Norman Weathers \u003cnorman.r.weathers@conocophillips.com\u003e\nCc: Vladimir V. Saveliev \u003cvs@namesys.com\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": "72fd4a35a824331d7a0f4168d7576502d95d34b3", "tree": "be27880bc36b7f62e8044a88b8744a35c5317714", "parents": [ "262086cf5b5343c2b81c97b1c606058e921859df" ], "author": { "name": "Robert P. J. Day", "email": "rpjday@mindspring.com", "time": "Sat Feb 10 01:45:59 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:32 2007 -0800" }, "message": "[PATCH] Numerous fixes to kernel-doc info in source files.\n\nA variety of (mostly) innocuous fixes to the embedded kernel-doc content in\nsource files, including:\n\n * make multi-line initial descriptions single line\n * denote some function names, constants and structs as such\n * change erroneous opening \u0027/*\u0027 to \u0027/**\u0027 in a few places\n * reword some text for clarity\n\nSigned-off-by: Robert P. J. Day \u003crpjday@mindspring.com\u003e\nCc: \"Randy.Dunlap\" \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "62045305c20a194127ae87ccf963cfe6ffde7c4e", "tree": "e672f27c6fd422aa9c2a7ec1ed30fb479510ed15", "parents": [ "f049274b012fd3b50113f194bfbbcbc3143d0da3" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Fri Feb 09 05:28:19 2007 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 09 08:06:14 2007 -0800" }, "message": "[PATCH] mm: remove find_trylock_page\n\nRemove find_trylock_page as per the removal schedule.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\n[ Let\u0027s see if anybody screams ]\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8459d86aff04fa53c2ab6a6b9f355b3063cc8014", "tree": "c0584c4907f0d63a18998b7cbffdf7900609606b", "parents": [ "20258b2b397031649e4a41922fe803d57017df84" ], "author": { "name": "Zach Brown", "email": "zach.brown@oracle.com", "time": "Sun Dec 10 02:21:05 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:57:21 2006 -0800" }, "message": "[PATCH] dio: only call aio_complete() after returning -EIOCBQUEUED\n\nThe only time it is safe to call aio_complete() is when the -\u003eki_retry\nfunction returns -EIOCBQUEUED to the AIO core. direct_io_worker() has\nhistorically done this by relying on its caller to translate positive return\ncodes into -EIOCBQUEUED for the aio case. It did this by trying to keep\nconditionals in sync. direct_io_worker() knew when finished_one_bio() was\ngoing to call aio_complete(). It would reverse the test and wait and free the\ndio in the cases it thought that finished_one_bio() wasn\u0027t going to.\n\nNot surprisingly, it ended up getting it wrong. \u0027ret\u0027 could be a negative\nerrno from the submission path but it failed to communicate this to\nfinished_one_bio(). direct_io_worker() would return \u003c 0, it\u0027s callers\nwouldn\u0027t raise -EIOCBQUEUED, and aio_complete() would be called. In the\nfuture finished_one_bio()\u0027s tests wouldn\u0027t reflect this and aio_complete()\nwould be called for a second time which can manifest as an oops.\n\nThe previous cleanups have whittled the sync and async completion paths down\nto the point where we can collapse them and clearly reassert the invariant\nthat we must only call aio_complete() after returning -EIOCBQUEUED.\ndirect_io_worker() will only return -EIOCBQUEUED when it is not the last to\ndrop the dio refcount and the aio bio completion path will only call\naio_complete() when it is the last to drop the dio refcount.\ndirect_io_worker() can ensure that it is the last to drop the reference count\nby waiting for bios to drain. It does this for sync ops, of course, and for\npartial dio writes that must fall back to buffered and for aio ops that saw\nerrors during submission.\n\nThis means that operations that end up waiting, even if they were issued as\naio ops, will not call aio_complete() from dio. Instead we return the return\ncode of the operation and let the aio core call aio_complete(). This is\npurposely done to fix a bug where AIO DIO file extensions would call\naio_complete() before their callers have a chance to update i_size.\n\nNow that direct_io_worker() is explicitly returning -EIOCBQUEUED its callers\nno longer have to translate for it. XFS needs to be careful not to free\nresources that will be used during AIO completion if -EIOCBQUEUED is returned.\n We maintain the previous behaviour of trying to write fs metadata for O_SYNC\naio+dio writes.\n\nSigned-off-by: Zach Brown \u003czach.brown@oracle.com\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Suparna Bhattacharya \u003csuparna@in.ibm.com\u003e\nAcked-by: Jeff Moyer \u003cjmoyer@redhat.com\u003e\nCc: \u003cxfs-masters@oss.sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "d3ac7f892b7d07d61d0895caa4f6e190e43112f8", "tree": "0ff35e7e5ab822b600075d79910d3cc136ba07ef", "parents": [ "f3a43f3f64bff8e205c3702f6b4804d66e306848" ], "author": { "name": "Josef \"Jeff\" Sipek", "email": "jsipek@cs.sunysb.edu", "time": "Fri Dec 08 02:36:44 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Dec 08 08:28:43 2006 -0800" }, "message": "[PATCH] mm: change uses of f_{dentry,vfsmnt} to use f_path\n\nChange all the uses of f_{dentry,vfsmnt} to f_path.{dentry,mnt} in linux/mm/.\n\nSigned-off-by: Josef \"Jeff\" Sipek \u003cjsipek@cs.sunysb.edu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "098fe651f7e9d759d1117c78c1a642b9b3945922", "tree": "8688e367d04c8341e79d9da775dccb9dc7747509", "parents": [ "cd54e7e54318d333227b13186f9a464bf1f68d27" ], "author": { "name": "Ashwin Chaugule", "email": "ashwin.chaugule@celunite.com", "time": "Wed Dec 06 20:31:54 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:21 2006 -0800" }, "message": "[PATCH] grab swap token reordered\n\nMake sure the contention for the token happens _before_ any read-in and\nkicks the swap-token algo only when the VM is under pressure.\n\nSigned-off-by: Ashwin Chaugule \u003cashwin.chaugule@celunite.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "d23a147bb6e8d467e8df73b6589888717da3b9ce", "tree": "7888c513810dc39a20e061e720c52fc8e7d778a4", "parents": [ "55ed16029d597622db8121270e687373b5e31722" ], "author": { "name": "Mark Fasheh", "email": "mark.fasheh@oracle.com", "time": "Tue Oct 17 17:05:18 2006 -0700" }, "committer": { "name": "Mark Fasheh", "email": "mark.fasheh@oracle.com", "time": "Fri Dec 01 18:28:38 2006 -0800" }, "message": "[PATCH] Export should_remove_suid()\n\nThis helps us avoid replicating the same logic within file system drivers.\n\nSigned-off-by: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\n" }, { "commit": "2ae88149a27cadf2840e0ab8155bef13be285c03", "tree": "e6873cc050973db6f2b01568a5e1faa6c981d139", "parents": [ "858cbcdd4f7a235f609249b9ca681b7ec5d786a3" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sat Oct 28 10:38:23 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 28 11:30:50 2006 -0700" }, "message": "[PATCH] mm: clean up pagecache allocation\n\n- Consolidate page_cache_alloc\n\n- Fix splice: only the pagecache pages and filesystem data need to use\n mapping_gfp_mask.\n\n- Fix grab_cache_page_nowait: same as splice, also honour NUMA placement.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "7b7fc708b568a258595e1fa911b930a75ac07b48", "tree": "5c77a5397d01c91aaa59ee5517af28afee32afcb", "parents": [ "c7a3bd177f248d01ee18a01d22048c80e071c331", "8c34e2d63231d4bf4852bac8521883944d770fe3" ], "author": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 21 10:01:52 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 21 10:01:52 2006 -0700" }, "message": "Merge branch \u0027splice\u0027 of git://brick.kernel.dk/data/git/linux-2.6-block\n\n* \u0027splice\u0027 of git://brick.kernel.dk/data/git/linux-2.6-block:\n [PATCH] Remove SUID when splicing into an inode\n [PATCH] Add lockless helpers for remove_suid()\n [PATCH] Introduce generic_file_splice_write_nolock()\n [PATCH] Take i_mutex in splice_from_pipe()\n" }, { "commit": "82591e6ea234762eeaa8b2337fe060ed438c18dc", "tree": "ea521388e91bdf385de546dada0925316eee02e3", "parents": [ "b95936cb9267e4c90a0b92361609ef5fd85a0a5f" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Oct 19 23:29:10 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Oct 20 10:26:44 2006 -0700" }, "message": "[PATCH] mm: more commenting on lock ordering\n\nClarify lockorder comments now that sys_msync dropps mmap_sem before\ncalling do_fsync.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "fb5527e68d495650a7658fec9a7246bf922db212", "tree": "dc0c993c3f07ddf1d1cf02a725ac3348f638d7bc", "parents": [ "e8e82b76e0312827f5ae04b573a05b02854a447e" ], "author": { "name": "Jeff Moyer", "email": "jmoyer@redhat.com", "time": "Thu Oct 19 23:28:13 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Oct 20 10:26:35 2006 -0700" }, "message": "[PATCH] direct-io: sync and invalidate file region when falling back to buffered write\n\nWhen direct-io falls back to buffered write, it will just leave the dirty data\nfloating about in pagecache, pending regular writeback.\n\nBut normal direct-io semantics are that IO is synchronous, and that it leaves\nno pagecache behind.\n\nSo change the fallback-to-buffered-write code to sync the file region and to\nthen strip away the pagecache, just as a regular direct-io write would do.\n\nAcked-by: Jeff Moyer \u003cjmoyer@redhat.com\u003e\nCc: Zach Brown \u003czach.brown@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "01de85e057328ecbef36e108673b1e81059d54c1", "tree": "0dbac62e48b2a2fa3f4ec4dea9b340ff31892a8c", "parents": [ "6da61809822c22634a3de2dcb3c60283b836a88a" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 17 19:50:36 2006 +0200" }, "committer": { "name": "Jens Axboe", "email": "axboe@nelson.home.kernel.dk", "time": "Thu Oct 19 20:53:08 2006 +0200" }, "message": "[PATCH] Add lockless helpers for remove_suid()\n\nRight now users have to grab i_mutex before calling remove_suid(), in the\nunlikely event that a call to -\u003esetattr() may be needed. Split up the\nfunction in two parts:\n\n- One to check if we need to remove suid\n- One to actually remove it\n\nThe first we can call lockless.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "4a61f17378c2cdd9bd8f34ef8bd7422861d0c1f1", "tree": "a2054556900af8c16fd9f5419f012dcf1ee2995a", "parents": [ "d002ec481c24f325ed6cfcb7810d317c015dd1b5", "7ecdb70a0ea436c06540140242bfac6ac3babfc0" ], "author": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Oct 04 09:06:16 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Oct 04 09:06:16 2006 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6: (292 commits)\n [GFS2] Fix endian bug for de_type\n [GFS2] Initialize SELinux extended attributes at inode creation time.\n [GFS2] Move logging code into log.c (mostly)\n [GFS2] Mark nlink cleared so VFS sees it happen\n [GFS2] Two redundant casts removed\n [GFS2] Remove uneeded endian conversion\n [GFS2] Remove duplicate sb reading code\n [GFS2] Mark metadata reads for blktrace\n [GFS2] Remove iflags.h, use FS_\n [GFS2] Fix code style/indent in ops_file.c\n [GFS2] streamline-generic_file_-interfaces-and-filemap gfs fix\n [GFS2] Remove readv/writev methods and use aio_read/aio_write instead (gfs bits)\n [GFS2] inode-diet: Eliminate i_blksize from the inode structure\n [GFS2] inode_diet: Replace inode.u.generic_ip with inode.i_private (gfs)\n [GFS2] Fix typo in last patch\n [GFS2] Fix direct i/o logic in filemap.c\n [GFS2] Fix bug in Makefiles for lock modules\n [GFS2] Remove (extra) fs_subsys declaration\n [GFS2/DLM] Fix trailing whitespace\n [GFS2] Tidy up meta_io code\n ...\n" }, { "commit": "b2abacf3a2699a8020829c85c16f358ba85cecaf", "tree": "6112d7b2e1f3f10c28f722942460c33eceab7ee3", "parents": [ "e95be9a5326f0f6d314a7aa04a3c0c0e67fa976b" ], "author": { "name": "Henrik Kretzschmar", "email": "henne@nachtwindheim.de", "time": "Wed Oct 04 02:15:22 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Oct 04 07:55:12 2006 -0700" }, "message": "[PATCH] mm: fix in kerneldoc\n\nFixes an kerneldoc error.\n\nSigned-off-by: Henrik Kretzschmar \u003chenne@nachtwindheim.de\u003e\nCc: \"Randy.Dunlap\" \u003crdunlap@xenotime.net\u003e\nAcked-by: Christoph Hellwig \u003chch@infradead.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "59458f40e25915a355d8b1d701425fe9f4f9ea23", "tree": "f1c9a2934df686e36d75f759ab7313b6f0e0e5f9", "parents": [ "825f9075d74028d11d7f5932f04e1b5db3022b51", "d834c16516d1ebec4766fc58c059bf01311e6045" ], "author": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Mon Oct 02 08:45:08 2006 -0400" }, "committer": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Mon Oct 02 08:45:08 2006 -0400" }, "message": "Merge branch \u0027master\u0027 into gfs2\n" }, { "commit": "543ade1fc901db4c3dbe9fb27241fb977f1f3eea", "tree": "cdd1a1f67a718adf71e92fe08e4b3d33bf3dbadc", "parents": [ "ee0b3e671baff681d69fbf0db33b47603c0a8280" ], "author": { "name": "Badari Pulavarty", "email": "pbadari@us.ibm.com", "time": "Sat Sep 30 23:28:48 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Oct 01 00:39:28 2006 -0700" }, "message": "[PATCH] Streamline generic_file_* interfaces and filemap cleanups\n\nThis patch cleans up generic_file_*_read/write() interfaces. Christoph\nHellwig gave me the idea for this clean ups.\n\nIn a nutshell, all filesystems should set .aio_read/.aio_write methods and use\ndo_sync_read/ do_sync_write() as their .read/.write methods. This allows us\nto cleanup all variants of generic_file_* routines.\n\nFinal available interfaces:\n\ngeneric_file_aio_read() - read handler\ngeneric_file_aio_write() - write handler\ngeneric_file_aio_write_nolock() - no lock write handler\n\n__generic_file_aio_write_nolock() - internal worker routine\n\nSigned-off-by: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ee0b3e671baff681d69fbf0db33b47603c0a8280", "tree": "3202ff815b2196c6c353bc5b28d7a2800df273ec", "parents": [ "027445c37282bc1ed26add45e573ad2d3e4860a5" ], "author": { "name": "Badari Pulavarty", "email": "pbadari@us.ibm.com", "time": "Sat Sep 30 23:28:47 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Oct 01 00:39:28 2006 -0700" }, "message": "[PATCH] Remove readv/writev methods and use aio_read/aio_write instead\n\nThis patch removes readv() and writev() methods and replaces them with\naio_read()/aio_write() methods.\n\nSigned-off-by: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "027445c37282bc1ed26add45e573ad2d3e4860a5", "tree": "93eab101a938ffebaea64703033c8649df4d73f0", "parents": [ "9ea0f9499d15c49df23e7aac4332d830c40e12d0" ], "author": { "name": "Badari Pulavarty", "email": "pbadari@us.ibm.com", "time": "Sat Sep 30 23:28:46 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Oct 01 00:39:28 2006 -0700" }, "message": "[PATCH] Vectorize aio_read/aio_write fileop methods\n\nThis patch vectorizes aio_read() and aio_write() methods to prepare for\ncollapsing all aio \u0026 vectored operations into one interface - which is\naio_read()/aio_write().\n\nSigned-off-by: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Michael Holzheu \u003cHOLZHEU@de.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9361401eb7619c033e2394e4f9f6d410d6719ac7", "tree": "04b94a71f2366988c17740d1c16cfbdec41d5d2e", "parents": [ "d366e40a1cabd453be6e2609caa7e12f9ca17b1f" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Sat Sep 30 20:45:40 2006 +0200" }, "committer": { "name": "Jens Axboe", "email": "axboe@nelson.home.kernel.dk", "time": "Sat Sep 30 20:52:31 2006 +0200" }, "message": "[PATCH] BLOCK: Make it possible to disable the block layer [try #6]\n\nMake it possible to disable the block layer. Not all embedded devices require\nit, some can make do with just JFFS2, NFS, ramfs, etc - none of which require\nthe block layer to be present.\n\nThis patch does the following:\n\n (*) Introduces CONFIG_BLOCK to disable the block layer, buffering and blockdev\n support.\n\n (*) Adds dependencies on CONFIG_BLOCK to any configuration item that controls\n an item that uses the block layer. This includes:\n\n (*) Block I/O tracing.\n\n (*) Disk partition code.\n\n (*) All filesystems that are block based, eg: Ext3, ReiserFS, ISOFS.\n\n (*) The SCSI layer. As far as I can tell, even SCSI chardevs use the\n \t block layer to do scheduling. Some drivers that use SCSI facilities -\n \t such as USB storage - end up disabled indirectly from this.\n\n (*) Various block-based device drivers, such as IDE and the old CDROM\n \t drivers.\n\n (*) MTD blockdev handling and FTL.\n\n (*) JFFS - which uses set_bdev_super(), something it could avoid doing by\n \t taking a leaf out of JFFS2\u0027s book.\n\n (*) Makes most of the contents of linux/blkdev.h, linux/buffer_head.h and\n linux/elevator.h contingent on CONFIG_BLOCK being set. sector_div() is,\n however, still used in places, and so is still available.\n\n (*) Also made contingent are the contents of linux/mpage.h, linux/genhd.h and\n parts of linux/fs.h.\n\n (*) Makes a number of files in fs/ contingent on CONFIG_BLOCK.\n\n (*) Makes mm/bounce.c (bounce buffering) contingent on CONFIG_BLOCK.\n\n (*) set_page_dirty() doesn\u0027t call __set_page_dirty_buffers() if CONFIG_BLOCK\n is not enabled.\n\n (*) fs/no-block.c is created to hold out-of-line stubs and things that are\n required when CONFIG_BLOCK is not set:\n\n (*) Default blockdev file operations (to give error ENODEV on opening).\n\n (*) Makes some /proc changes:\n\n (*) /proc/devices does not list any blockdevs.\n\n (*) /proc/diskstats and /proc/partitions are contingent on CONFIG_BLOCK.\n\n (*) Makes some compat ioctl handling contingent on CONFIG_BLOCK.\n\n (*) If CONFIG_BLOCK is not defined, makes sys_quotactl() return -ENODEV if\n given command other than Q_SYNC or if a special device is specified.\n\n (*) In init/do_mounts.c, no reference is made to the blockdev routines if\n CONFIG_BLOCK is not defined. This does not prohibit NFS roots or JFFS2.\n\n (*) The bdflush, ioprio_set and ioprio_get syscalls can now be absent (return\n error ENOSYS by way of cond_syscall if so).\n\n (*) The seclvl_bd_claim() and seclvl_bd_release() security calls do nothing if\n CONFIG_BLOCK is not set, since they can\u0027t then happen.\n\nSigned-Off-By: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Jens Axboe \u003caxboe@kernel.dk\u003e\n" }, { "commit": "cf9a2ae8d49948f861b56e5333530e491a9da190", "tree": "21f0b0d781b3e60cc60464d39b6d95681201b37e", "parents": [ "4090959aee403817ff386415f9bc602c1a0882ef" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Tue Aug 29 19:05:54 2006 +0100" }, "committer": { "name": "Jens Axboe", "email": "axboe@nelson.home.kernel.dk", "time": "Sat Sep 30 20:31:19 2006 +0200" }, "message": "[PATCH] BLOCK: Move functions out of buffer code [try #6]\n\nMove some functions out of the buffering code that aren\u0027t strictly buffering\nspecific. This is a precursor to being able to disable the block layer.\n\n (*) Moved some stuff out of fs/buffer.c:\n\n (*) The file sync and general sync stuff moved to fs/sync.c.\n\n (*) The superblock sync stuff moved to fs/super.c.\n\n (*) do_invalidatepage() moved to mm/truncate.c.\n\n (*) try_to_release_page() moved to mm/filemap.c.\n\n (*) Moved some related declarations between header files:\n\n (*) declarations for do_invalidatepage() and try_to_release_page() moved\n \t to linux/mm.h.\n\n (*) __set_page_dirty_buffers() moved to linux/buffer_head.h.\n\nSigned-Off-By: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Jens Axboe \u003caxboe@kernel.dk\u003e\n" }, { "commit": "79f5acf5d784492afe80723496624093079aed9c", "tree": "64933a842722dbd8923680a9aafa4c334d1b06d5", "parents": [ "4ce072f1faf29d24df4600f53db8cdd62d400a8f" ], "author": { "name": "Adam Litke", "email": "agl@us.ibm.com", "time": "Fri Sep 29 01:58:43 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Sep 29 09:18:03 2006 -0700" }, "message": "[PATCH] mm: make filemap_nopage use NOPAGE_SIGBUS\n\nDon\u0027t open-code NOPAGE_SIGBUS.\n\nSigned-off-by: Adam Litke \u003cagl@us.ibm.com\u003e\nAcked-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "185a257f2f73bcd89050ad02da5bedbc28fc43fa", "tree": "5e32586114534ed3f2165614cba3d578f5d87307", "parents": [ "3f1a9aaeffd8d1cbc5ab9776c45cbd66af1c9699", "a77c64c1a641950626181b4857abb701d8f38ccc" ], "author": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Thu Sep 28 08:29:59 2006 -0400" }, "committer": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Thu Sep 28 08:29:59 2006 -0400" }, "message": "Merge branch \u0027master\u0027 into gfs2\n" }, { "commit": "3f1a9aaeffd8d1cbc5ab9776c45cbd66af1c9699", "tree": "d786c4f1f48ac3ad695a28961b99b010f9136ee5", "parents": [ "0e0bcae3bfb3c88dbe14735fa69d7d88794dc73a" ], "author": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Wed Sep 27 14:52:48 2006 -0400" }, "committer": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Wed Sep 27 14:52:48 2006 -0400" }, "message": "[GFS2] Fix typo in last patch\n\nSigned-off-by: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\n" }, { "commit": "0e0bcae3bfb3c88dbe14735fa69d7d88794dc73a", "tree": "cccd335fd1d295d28a345bdcc1c8e0bf5974af47", "parents": [ "7e18c02be7c83a8cfd1319f0117f63509c20aa8e" ], "author": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Wed Sep 27 14:45:07 2006 -0400" }, "committer": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Wed Sep 27 14:45:07 2006 -0400" }, "message": "[GFS2] Fix direct i/o logic in filemap.c\n\nWe shouldn\u0027t mark the file accessed in the case that it\nwasn\u0027t accessed.\n\nSigned-off-by: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\n" }, { "commit": "da6052f7b33abe55fbfd7d2213815f58c00a88d4", "tree": "a2deda88ae8e9fc33d9a0ce80f42fde2c55c7bbc", "parents": [ "e5ac9c5aec7c4bc57fa93f2d37d760a22cb7bd33" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Mon Sep 25 23:31:35 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:49 2006 -0700" }, "message": "[PATCH] update some mm/ comments\n\nLet\u0027s try to keep mm/ comments more useful and up to date. This is a start.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "db37648cd6ce9b828abd6d49aa3d269926ee7b7d", "tree": "a0155c7897f4706386d10c8718f98687bc357c82", "parents": [ "28e4d965e6131ace1e813e93aebca89ac6b82dc1" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Mon Sep 25 23:31:24 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:48 2006 -0700" }, "message": "[PATCH] mm: non syncing lock_page()\n\nlock_page needs the caller to have a reference on the page-\u003emapping inode\ndue to sync_page, ergo set_page_dirty_lock is obviously buggy according to\nits comments.\n\nSolve it by introducing a new lock_page_nosync which does not do a sync_page.\n\nakpm: unpleasant solution to an unpleasant problem. If it goes wrong it could\ncause great slowdowns while the lock_page() caller waits for kblockd to\nperform the unplug. And if a filesystem has special sync_page() requirements\n(none presently do), permanent hangs are possible.\n\notoh, set_page_dirty_lock() is usually (always?) called against userspace\npages. They are always up-to-date, so there shouldn\u0027t be any pending read I/O\nagainst these pages.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "b1b934d31d8a608fe69fc56d6e539548b55b0601", "tree": "e8206589759c732a3a9b70b3feeb9ef50dc3c6b3", "parents": [ "5dd9feafb351a8bf304292623cbc63335c34d279", "b6ff50833ad43a8ebd9b16bf53c334f7aaf33c41" ], "author": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Mon Jul 31 08:59:59 2006 -0400" }, "committer": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Mon Jul 31 08:59:59 2006 -0400" }, "message": "Merge branch \u0027master\u0027\n" }, { "commit": "b83a8e64fd1aecf021111d22c062c97a3241d0c4", "tree": "a83b739d2d91b550512641dddc40590b41670be4", "parents": [ "70583161e878c8e9baaace71ba000b46c86b89cc" ], "author": { "name": "Andi Kleen", "email": "ak@suse.de", "time": "Sat Jul 29 21:42:55 2006 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Jul 29 20:59:55 2006 -0700" }, "message": "[PATCH] MM: Remove rogue readahead printk\n\nFor some reason it triggers always with NFS root and spams the kernel\nlogs of my nfs root boxes a lot.\n\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nAcked-by: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "a9e5f4d0780ec9cda7a70b08294d7718431b62a1", "tree": "f21fa310b6ea63f49cf6d710fcd84fe8d66282f3", "parents": [ "52f341cf75d2da84811127582616984eb0602360" ], "author": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Tue Jul 25 17:24:12 2006 -0400" }, "committer": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Tue Jul 25 17:24:12 2006 -0400" }, "message": "[GFS2] Alter direct I/O path\n\nAs per comments received, alter the GFS2 direct I/O path so that\nit uses the standard read functions \"out of the box\". Needs a\nsmall change to one of the VFS functions. This reduces the size\nof the code quite a lot and also removes the need for one new export.\n\nSome more work remains to be done, but this is the bones of the\nthing.\n\nSigned-off-by: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\n" }, { "commit": "0a1340c185734a57fbf4775927966ad4a1347b02", "tree": "d9ed8f0dd809a7c542a3356601125ea5b5aaa804", "parents": [ "af18ddb8864b096e3ed4732e2d4b21c956dcfe3a", "29454dde27d8e340bb1987bad9aa504af7081eba" ], "author": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Mon Jul 03 10:25:08 2006 -0400" }, "committer": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Mon Jul 03 10:25:08 2006 -0400" }, "message": "Merge rsync://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6\n\nConflicts:\n\n\tinclude/linux/kernel.h\n" }, { "commit": "22a3e233ca08a2ddc949ba1ae8f6e16ec7ef1a13", "tree": "7ef158ba2c30e0dde2dc103d1904fae243759a6b", "parents": [ "39302175c26d74be35715c05a0f342c9e64c21bf", "6ab3d5624e172c553004ecc862bfeac16d9d68b7" ], "author": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 15:39:30 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 15:39:30 2006 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial:\n Remove obsolete #include \u003clinux/config.h\u003e\n remove obsolete swsusp_encrypt\n arch/arm26/Kconfig typos\n Documentation/IPMI typos\n Kconfig: Typos in net/sched/Kconfig\n v9fs: do not include linux/version.h\n Documentation/DocBook/mtdnand.tmpl: typo fixes\n typo fixes: specfic -\u003e specific\n typo fixes in Documentation/networking/pktgen.txt\n typo fixes: occuring -\u003e occurring\n typo fixes: infomation -\u003e information\n typo fixes: disadvantadge -\u003e disadvantage\n typo fixes: aquire -\u003e acquire\n typo fixes: mecanism -\u003e mechanism\n typo fixes: bandwith -\u003e bandwidth\n fix a typo in the RTC_CLASS help text\n smb is no longer maintained\n\nManually merged trivial conflict in arch/um/kernel/vmlinux.lds.S\n" }, { "commit": "f8891e5e1f93a128c3900f82035e8541357896a7", "tree": "97b078ac97970962b17c85d39fd64cb48dc01168", "parents": [ "ca889e6c45e0b112cb2ca9d35afc66297519b5d5" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:45 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:36 2006 -0700" }, "message": "[PATCH] Light weight event counters\n\nThe remaining counters in page_state after the zoned VM counter patches\nhave been applied are all just for show in /proc/vmstat. They have no\nessential function for the VM.\n\nWe use a simple increment of per cpu variables. In order to avoid the most\nsevere races we disable preempt. Preempt does not prevent the race between\nan increment and an interrupt handler incrementing the same statistics\ncounter. However, that race is exceedingly rare, we may only loose one\nincrement or so and there is no requirement (at least not in kernel) that\nthe vm event counters have to be accurate.\n\nIn the non preempt case this results in a simple increment for each\ncounter. For many architectures this will be reduced by the compiler to a\nsingle instruction. This single instruction is atomic for i386 and x86_64.\n And therefore even the rare race condition in an interrupt is avoided for\nboth architectures in most cases.\n\nThe patchset also adds an off switch for embedded systems that allows a\nbuilding of linux kernels without these counters.\n\nThe implementation of these counters is through inline code that hopefully\nresults in only a single instruction increment instruction being emitted\n(i386, x86_64) or in the increment being hidden though instruction\nconcurrency (EPIC architectures such as ia64 can get that done).\n\nBenefits:\n- VM event counter operations usually reduce to a single inline instruction\n on i386 and x86_64.\n- No interrupt disable, only preempt disable for the preempt case.\n Preempt disable can also be avoided by moving the counter into a spinlock.\n- Handling is similar to zoned VM counters.\n- Simple and easily extendable.\n- Can be omitted to reduce memory use for embedded use.\n\nReferences:\n\nRFC http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d113512330605497\u0026w\u003d2\nRFC http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d114988082814934\u0026w\u003d2\nlocal_t http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d114991748606690\u0026w\u003d2\nV2 http://marc.theaimsgroup.com/?t\u003d115014808400007\u0026r\u003d1\u0026w\u003d2\nV3 http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d115024767022346\u0026w\u003d2\nV4 http://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d115047968808926\u0026w\u003d2\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "347ce434d57da80fd5809c0c836f206a50999c26", "tree": "f730d151be77977f594e5cc083a93bbeb4c602cc", "parents": [ "65ba55f500a37272985d071c9bbb35256a2f7c14" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:35 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:34 2006 -0700" }, "message": "[PATCH] zoned vm counters: conversion of nr_pagecache to per zone counter\n\nCurrently a single atomic variable is used to establish the size of the page\ncache in the whole machine. The zoned VM counters have the same method of\nimplementation as the nr_pagecache code but also allow the determination of\nthe pagecache size per zone.\n\nRemove the special implementation for nr_pagecache and make it a zoned counter\nnamed NR_FILE_PAGES.\n\nUpdates of the page cache counters are always performed with interrupts off.\nWe can therefore use the __ variant here.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6ab3d5624e172c553004ecc862bfeac16d9d68b7", "tree": "6d98881fe91fd9583c109208d5c27131b93fa248", "parents": [ "e02169b682bc448ccdc819dc8639ed34a23cedd8" ], "author": { "name": "Jörn Engel", "email": "joern@wohnheim.fh-wedel.de", "time": "Fri Jun 30 19:25:36 2006 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Fri Jun 30 19:25:36 2006 +0200" }, "message": "Remove obsolete #include \u003clinux/config.h\u003e\n\nSigned-off-by: Jörn Engel \u003cjoern@wohnheim.fh-wedel.de\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "81b0c8713385ce1b1b9058e916edcf9561ad76d6", "tree": "4c5e8fde3d15503c609d5c5f74911f95fc528f03", "parents": [ "0686cd8fbe3e5fb1441ae84b9cbc813f9297b879" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Thu Jun 29 02:24:26 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Thu Jun 29 10:26:20 2006 -0700" }, "message": "[PATCH] generic_file_buffered_write(): handle zero-length iovec segments\n\nThe recent generic_file_write() deadlock fix caused\ngeneric_file_buffered_write() to loop inifinitely when presented with a\nzero-length iovec segment. Fix.\n\nNote that this fix deliberately avoids calling -\u003eprepare_write(),\n-\u003ecommit_write() etc with a zero-length write. This is because I don\u0027t trust\nall filesystems to get that right.\n\nThis is a cautious approach, for 2.6.17.x. For 2.6.18 we should just go ahead\nand call -\u003eprepare_write() and -\u003ecommit_write() with the zero length and fix\nany broken filesystems. So I\u0027ll make that change once this code is stabilised\nand backported into 2.6.17.x.\n\nThe reason for preferring to call -\u003eprepare_write() and -\u003ecommit_write() with\nthe zero-length segment: a zero-length segment _should_ be sufficiently\nuncommon that this is the correct way of handling it. We don\u0027t want to\noptimise for poorly-written userspace at the expense of well-written\nuserspace.\n\nCc: \"Vladimir V. Saveliev\" \u003cvs@namesys.com\u003e\nCc: Neil Brown \u003cneilb@suse.de\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Chris Wright \u003cchrisw@sous-sol.org\u003e\nCc: Greg KH \u003cgreg@kroah.com\u003e\nCc: \u003cstable@kernel.org\u003e\nCc: walt \u003cwa1ter@myrealbox.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f5e54d6e53a20cef45af7499e86164f0e0d16bb2", "tree": "cb92acbb89b84796261bf5563182261ec5654127", "parents": [ "a052b68b1e7a31f1e6a721290035e9deb0f6fed9" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Wed Jun 28 04:26:44 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Jun 28 14:59:04 2006 -0700" }, "message": "[PATCH] mark address_space_operations const\n\nSame as with already do with the file operations: keep them in .rodata and\nprevents people from doing runtime patching.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Steven French \u003csfrench@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6527c2bdf1f833cc18e8f42bd97973d583e4aa83", "tree": "737055ae276cdfa75e7b3e55a3ebdd1f88105606", "parents": [ "1c0f16e5cdff59f3b132a1b0c0d44a941f8813d2" ], "author": { "name": "Vladimir V. Saveliev", "email": "vs@namesys.com", "time": "Tue Jun 27 02:53:57 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jun 27 17:32:39 2006 -0700" }, "message": "[PATCH] generic_file_buffered_write(): deadlock on vectored write\n\ngeneric_file_buffered_write() prefaults in user pages in order to avoid\ndeadlock on copying from the same page as write goes to.\n\nHowever, it looks like there is a problem when write is vectored:\nfault_in_pages_readable brings in current segment or its part (maxlen).\nOTOH, filemap_copy_from_user_iovec is called to copy number of bytes\n(bytes) which may exceed current segment, so filemap_copy_from_user_iovec\nswitches to the next segment which is not brought in yet. Pagefault is\ngenerated. That causes the deadlock if pagefault is for the same page\nwrite goes to: page being written is locked and not uptodate, pagefault\nwill deadlock trying to lock locked page.\n\n[akpm@osdl.org: somewhat rewritten]\nCc: Neil Brown \u003cneilb@suse.de\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "76d42bd96984832c4ea8bc8cbd74e496ac31409e", "tree": "138fb5c39d671166485cf2e16e450332daeb7081", "parents": [ "78dbe706e22f54bce61571ad837238382e1ba5f9" ], "author": { "name": "Wu Fengguang", "email": "wfg@mail.ustc.edu.cn", "time": "Sun Jun 25 05:48:43 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jun 25 10:01:17 2006 -0700" }, "message": "[PATCH] readahead: backoff on I/O error\n\nBackoff readahead size exponentially on I/O error.\n\nMichael Tokarev \u003cmjt@tls.msk.ru\u003e described the problem as:\n\n[QUOTE]\nSuppose there\u0027s a CD-rom with a scratch/etc, one sector is unreadable.\nIn order to \"fix\" it, one have to read it and write to another CD-rom,\nor something.. or just ignore the error (if it\u0027s just a skip in a video\nstream). Let\u0027s assume the unreadable block is number U.\n\nBut current behavior is just insane. An application requests block\nnumber N, which is before U. Kernel tries to read-ahead blocks N..U.\nCdrom drive tries to read it, re-read it.. for some time. Finally,\nwhen all the N..U-1 blocks are read, kernel returns block number N\n(as requested) to an application, successefully.\n\nNow an app requests block number N+1, and kernel tries to read\nblocks N+1..U+1. Retrying again as in previous step.\n\nAnd so on, up to when an app requests block number U-1. And when,\nfinally, it requests block U, it receives read error.\n\nSo, kernel currentry tries to re-read the same failing block as\nmany times as the current readahead value (256 (times?) by default).\n\nThis whole process already killed my cdrom drive (I posted about it\nto LKML several months ago) - literally, the drive has fried, and\ndoes not work anymore. Ofcourse that problem was a bug in firmware\n(or whatever) of the drive *too*, but.. main problem with that is\ncurrent readahead logic as described above.\n[/QUOTE]\n\nWhich was confirmed by Jens Axboe \u003caxboe@suse.de\u003e:\n\n[QUOTE]\nFor ide-cd, it tends do only end the first part of the request on a\nmedium error. So you may see a lot of repeats :/\n[/QUOTE]\n\nWith this patch, retries are expected to be reduced from, say, 256, to 5.\n\n[akpm@osdl.org: cleanups]\nSigned-off-by: Wu Fengguang \u003cwfg@mail.ustc.edu.cn\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "01408c4939479ec46c15aa7ef6e2406be50eeeca", "tree": "106ee144cc7214cc5cb78bc35a49fc654ef16fe9", "parents": [ "5f507d9e05b4dbfee34f3d967623ad3fbf0f28b3" ], "author": { "name": "NeilBrown", "email": "neilb@suse.de", "time": "Sun Jun 25 05:47:58 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jun 25 10:01:09 2006 -0700" }, "message": "[PATCH] Prepare for __copy_from_user_inatomic to not zero missed bytes\n\nThe problem is that when we write to a file, the copy from userspace to\npagecache is first done with preemption disabled, so if the source address is\nnot immediately available the copy fails *and* *zeros* *the* *destination*.\n\nThis is a problem because a concurrent read (which admittedly is an odd thing\nto do) might see zeros rather that was there before the write, or what was\nthere after, or some mixture of the two (any of these being a reasonable thing\nto see).\n\nIf the copy did fail, it will immediately be retried with preemption\nre-enabled so any transient problem with accessing the source won\u0027t cause an\nerror.\n\nThe first copying does not need to zero any uncopied bytes, and doing so\ncauses the problem. It uses copy_from_user_atomic rather than copy_from_user\nso the simple expedient is to change copy_from_user_atomic to *not* zero out\nbytes on failure.\n\nThe first of these two patches prepares for the change by fixing two places\nwhich assume copy_from_user_atomic does zero the tail. The two usages are\nvery similar pieces of code which copy from a userspace iovec into one or more\npage-cache pages. These are changed to remove the assumption.\n\nThe second patch changes __copy_from_user_inatomic* to not zero the tail.\nOnce these are accepted, I will look at similar patches of other architectures\nwhere this is important (ppc, mips and sparc being the ones I can find).\n\nThis patch:\n\nThere is a problem with __copy_from_user_inatomic zeroing the tail of the\nbuffer in the case of an error. As it is called in atomic context, the error\nmay be transient, so it results in zeros being written where maybe they\nshouldn\u0027t be.\n\nIn the usage in filemap, this opens a window for a well timed read to see data\n(zeros) which is not consistent with any ordering of reads and writes.\n\nMost cases where __copy_from_user_inatomic is called, a failure results in\n__copy_from_user being called immediately. As long as the latter zeros the\ntail, the former doesn\u0027t need to. However in *copy_from_user_iovec\nimplementations (in both filemap and ntfs/file), it is assumed that\ncopy_from_user_inatomic will zero the tail.\n\nThis patch removes that assumption, so that after this patch it will\nbe safe for copy_from_user_inatomic to not zero the tail.\n\nThis patch also adds some commentary to filemap.h and asm-i386/uaccess.h.\n\nAfter this patch, all architectures that might disable preempt when\nkmap_atomic is called need to have their __copy_from_user_inatomic* \"fixed\".\nThis includes\n - powerpc\n - i386\n - mips\n - sparc\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Anton Altaparmakov \u003caia21@cantab.net\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nCc: William Lee Irwin III \u003cwli@holomorphy.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c22ce143d15eb288543fe9873e1c5ac1c01b69a1", "tree": "dc7d457b8952fc50dfc90df659b35de4117c61fc", "parents": [ "7dbdf43cfa635ddc3701cc8d1eab07597cd731c0" ], "author": { "name": "Hiro Yoshioka", "email": "hyoshiok@miraclelinux.com", "time": "Fri Jun 23 02:04:16 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:56 2006 -0700" }, "message": "[PATCH] x86: cache pollution aware __copy_from_user_ll()\n\nUse the x86 cache-bypassing copy instructions for copy_from_user().\n\nSome performance data are\n\nTotal of GLOBAL_POWER_EVENTS (CPU cycle samples)\n\n2.6.12.4.orig 1921587\n2.6.12.4.nt 1599424\n1599424/1921587\u003d83.23% (16.77% reduction)\n\nBSQ_CACHE_REFERENCE (L3 cache miss)\n2.6.12.4.orig 57427\n2.6.12.4.nt 20858\n20858/57427\u003d36.32% (63.7% reduction)\n\nL3 cache miss reduction of __copy_from_user_ll\nsamples %\n37408 65.1412 vmlinux __copy_from_user_ll\n23 0.1103 vmlinux __copy_user_zeroing_intel_nocache\n23/37408\u003d0.061% (99.94% reduction)\n\nTop 5 of 2.6.12.4.nt\nCounted GLOBAL_POWER_EVENTS events (time during which processor is not stopped) with a unit mask of 0x01 (mandatory) count 100000\nsamples % app name symbol name\n128392 8.0274 vmlinux __copy_user_zeroing_intel_nocache\n64206 4.0143 vmlinux journal_add_journal_head\n59746 3.7355 vmlinux do_get_write_access\n47674 2.9807 vmlinux journal_put_journal_head\n46021 2.8774 vmlinux journal_dirty_metadata\npattern9-0-cpu4-0-09011728/summary.out\n\nCounted BSQ_CACHE_REFERENCE events (cache references seen by the bus unit) with a unit mask of 0x3f (multiple flags) count 3000\nsamples % app name symbol name\n69755 4.2861 vmlinux __copy_user_zeroing_intel_nocache\n55685 3.4215 vmlinux journal_add_journal_head\n52371 3.2179 vmlinux __find_get_block\n45504 2.7960 vmlinux journal_put_journal_head\n36005 2.2123 vmlinux journal_stop\npattern9-0-cpu4-0-09011744/summary.out\n\nCounted BSQ_CACHE_REFERENCE events (cache references seen by the bus unit) with a unit mask of 0x200 (read 3rd level cache miss) count 3000\nsamples % app name symbol name\n1147 5.4994 vmlinux journal_add_journal_head\n881 4.2240 vmlinux journal_dirty_data\n872 4.1809 vmlinux blk_rq_map_sg\n734 3.5192 vmlinux journal_commit_transaction\n617 2.9582 vmlinux radix_tree_delete\npattern9-0-cpu4-0-09011731/summary.out\n\niozone results are\n\noriginal 2.6.12.4 CPU time \u003d 207.768 sec\ncache aware CPU time \u003d 184.783 sec\n(three times run)\n184.783/207.768\u003d88.94% (11.06% reduction)\n\noriginal:\npattern9-0-cpu4-0-08191720/iozone.out: CPU Utilization: Wall time 45.997 CPU time 64.527 CPU utilization 140.28 %\npattern9-0-cpu4-0-08191741/iozone.out: CPU Utilization: Wall time 46.878 CPU time 71.933 CPU utilization 153.45 %\npattern9-0-cpu4-0-08191743/iozone.out: CPU Utilization: Wall time 45.152 CPU time 71.308 CPU utilization 157.93 %\n\ncache awre:\npattern9-0-cpu4-0-09011728/iozone.out: CPU Utilization: Wall time 44.842 CPU time 62.465 CPU utilization 139.30 %\npattern9-0-cpu4-0-09011731/iozone.out: CPU Utilization: Wall time 44.718 CPU time 59.273 CPU utilization 132.55 %\npattern9-0-cpu4-0-09011744/iozone.out: CPU Utilization: Wall time 44.367 CPU time 63.045 CPU utilization 142.10 %\n\nSigned-off-by: Hiro Yoshioka \u003chyoshiok@miraclelinux.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "485bb99b49a173a22a0bbf4e189465414947ecac", "tree": "28d0975d4d205162ce1bd0e52537fc22b766e719", "parents": [ "800590f523bf3bde9fa6c8e4d6763e4bf6a2c8ec" ], "author": { "name": "Randy Dunlap", "email": "rdunlap@xenotime.net", "time": "Fri Jun 23 02:03:49 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:52 2006 -0700" }, "message": "[PATCH] kernel-doc for mm/filemap.c\n\nmm/filemap.c:\n- add lots of kernel-doc;\n- fix some typos and kernel-doc errors;\n- drop some blank lines between function close and EXPORT_SYMBOL();\n\nSigned-off-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "111ebb6e6f7bd7de6d722c5848e95621f43700d9", "tree": "bb00b13001db9be201e9b6d31468a79f4d1240bf", "parents": [ "4c91c3648c620003cb7b21b8858f36cd6132e168" ], "author": { "name": "OGAWA Hirofumi", "email": "hirofumi@mail.parknet.co.jp", "time": "Fri Jun 23 02:03:26 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:49 2006 -0700" }, "message": "[PATCH] writeback: fix range handling\n\nWhen a writeback_control\u0027s `start\u0027 and `end\u0027 fields are used to\nindicate a one-byte-range starting at file offset zero, the required\nvalues of .start\u003d0,.end\u003d0 mean that the -\u003ewritepages() implementation\nhas no way of telling that it is being asked to perform a range\nrequest. Because we\u0027re currently overloading (start \u003d\u003d 0 \u0026\u0026 end \u003d\u003d 0)\nto mean \"this is not a write-a-range request\".\n\nTo make all this sane, the patch changes range of writeback_control.\n\nSo caller does: If it is calling -\u003ewritepages() to write pages, it\nsets range (range_start/end or range_cyclic) always.\n\nAnd if range_cyclic is true, -\u003ewritepages() thinks the range is\ncyclic, otherwise it just uses range_start and range_end.\n\nThis patch does,\n\n - Add LLONG_MAX, LLONG_MIN, ULLONG_MAX to include/linux/kernel.h\n -1 is usually ok for range_end (type is long long). But, if someone did,\n\n\t\trange_end +\u003d val;\t\trange_end is \"val - 1\"\n\t\tu64val \u003d range_end \u003e\u003e bits;\tu64val is \"~(0ULL)\"\n\n or something, they are wrong. So, this adds LLONG_MAX to avoid nasty\n things, and uses LLONG_MAX for range_end.\n\n - All callers of -\u003ewritepages() sets range_start/end or range_cyclic.\n\n - Fix updates of -\u003ewriteback_index. It seems already bit strange.\n If it starts at 0 and ended by check of nr_to_write, this last\n index may reduce chance to scan end of file. So, this updates\n -\u003ewriteback_index only if range_cyclic is true or whole-file is\n scanned.\n\nSigned-off-by: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nCc: Nathan Scott \u003cnathans@sgi.com\u003e\nCc: Anton Altaparmakov \u003caia21@cantab.net\u003e\nCc: Steven French \u003csfrench@us.ibm.com\u003e\nCc: \"Vladimir V. Saveliev\" \u003cvs@namesys.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "bf9f424d9acf461fabcb0e9f47b356e08186d91f", "tree": "fe0aabb68b2a6661af395a20bf239ef83f890505", "parents": [ "0d42e54220ba34e031167138ef91cbd42d8b5876" ], "author": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Wed Jun 21 11:54:43 2006 -0400" }, "committer": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Wed Jun 21 11:54:43 2006 -0400" }, "message": "[GFS2] Make file_read_actor export _GPL\n\nMake file_read_actor export a _GPL export.\n\nSigned-off-by: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\n" }, { "commit": "7d63b54a65ce902f9aaa8efe8192aa3b983264d4", "tree": "250a77bebe92cbd6edac70a649866044295876db", "parents": [ "fd88de569b802c4a04aaa6ee74667775f4aed8c6", "d8c3291c73b958243b33f8509d4507e76dafd055" ], "author": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Fri May 12 10:48:52 2006 -0400" }, "committer": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Fri May 12 10:48:52 2006 -0400" }, "message": "Merge branch \u0027master\u0027\n" }, { "commit": "ebf43500ef148a380bd132743c3fc530111ac620", "tree": "01ddb60f5662cf92b96b0468bf9820518a611209", "parents": [ "eb645a24de82496434cc81171d7f350edb327399" ], "author": { "name": "Jens Axboe", "email": "axboe@suse.de", "time": "Thu Apr 27 08:46:01 2006 +0200" }, "committer": { "name": "Jens Axboe", "email": "axboe@nelson.home.kernel.dk", "time": "Thu Apr 27 08:59:48 2006 +0200" }, "message": "[PATCH] Add find_get_pages_contig(): contiguous variant of find_get_pages()\n\nfind_get_pages_contig() will break out if we hit a hole in the page cache.\nFrom Andrew Morton, small modifications and documentation by me.\n\nSigned-off-by: Jens Axboe \u003caxboe@suse.de\u003e\n" }, { "commit": "86579dd06deecfa6ac88d5e84e4d63c397cd6f6d", "tree": "b4475d3ccde53015ad84a06e4e55e64591171b75", "parents": [ "7ea9ea832212c4a755650f7c7cc1ff0b63292a41", "a0f067802576d4eb4c65d40b8ee7d6ea3c81dd61" ], "author": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Fri Mar 31 15:34:58 2006 -0500" }, "committer": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Fri Mar 31 15:34:58 2006 -0500" }, "message": "Merge branch \u0027master\u0027\n" }, { "commit": "ebcf28e1c7a295f3321249dd235ad2e45938fdd9", "tree": "fdd2e131e627af55d3741a7fafad0edaa61410c1", "parents": [ "469eb4d03878b676418f853011ebfb54ccf83a5e" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Fri Mar 24 03:18:04 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Mar 24 07:33:25 2006 -0800" }, "message": "[PATCH] fadvise(): write commands\n\nAdd two new linux-specific fadvise extensions():\n\nLINUX_FADV_ASYNC_WRITE: start async writeout of any dirty pages between file\noffsets `offset\u0027 and `offset+len\u0027. Any pages which are currently under\nwriteout are skipped, whether or not they are dirty.\n\nLINUX_FADV_WRITE_WAIT: wait upon writeout of any dirty pages between file\noffsets `offset\u0027 and `offset+len\u0027.\n\nBy combining these two operations the application may do several things:\n\nLINUX_FADV_ASYNC_WRITE: push some or all of the dirty pages at the disk.\n\nLINUX_FADV_WRITE_WAIT, LINUX_FADV_ASYNC_WRITE: push all of the currently dirty\npages at the disk.\n\nLINUX_FADV_WRITE_WAIT, LINUX_FADV_ASYNC_WRITE, LINUX_FADV_WRITE_WAIT: push all\nof the currently dirty pages at the disk, wait until they have been written.\n\nIt should be noted that none of these operations write out the file\u0027s\nmetadata. So unless the application is strictly performing overwrites of\nalready-instantiated disk blocks, there are no guarantees here that the data\nwill be available after a crash.\n\nTo complete this suite of operations I guess we should have a \"sync file\nmetadata only\" operation. This gives applications access to all the building\nblocks needed for all sorts of sync operations. But sync-metadata doesn\u0027t fit\nwell with the fadvise() interface. Probably it should be a new syscall:\nsys_fmetadatasync().\n\nThe patch also diddles with the meaning of `endbyte\u0027 in sys_fadvise64_64().\nIt is made to represent that last affected byte in the file (ie: it is\ninclusive). Generally, all these byterange and pagerange functions are\ninclusive so we can easily represent EOF with -1.\n\nAs Ulrich notes, these two functions are somewhat abusive of the fadvise()\nconcept, which appears to be \"set the future policy for this fd\".\n\nBut these commands are a perfect fit with the fadvise() impementation, and\nseveral of the existing fadvise() commands are synchronous and don\u0027t affect\nfuture policy either. I think we can live with the slight incongruity.\n\nCc: Michael Kerrisk \u003cmtk-manpages@gmx.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "469eb4d03878b676418f853011ebfb54ccf83a5e", "tree": "38b10385c6241778ca88c6015ded3ba68d39a23c", "parents": [ "604bf5a216e7f2d97cdf62614ca1281921531040" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Fri Mar 24 03:17:45 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Mar 24 07:33:25 2006 -0800" }, "message": "[PATCH] filemap_fdatawrite_range() api: clarify -end parameter\n\nI had trouble understanding working out whether filemap_fdatawrite_range()\u0027s\n`end\u0027 parameter describes the last-byte-to-be-written or the last-plus-one.\nClarify that in comments.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "44110fe385af23ca5eee8a6ad4ff55d50339097a", "tree": "50ed2bfe054b8e35968d8e4a5fbe95c8b3db843b", "parents": [ "825a46af5ac171f9f41f794a0a00165588ba1589" ], "author": { "name": "Paul Jackson", "email": "pj@sgi.com", "time": "Fri Mar 24 03:16:04 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Mar 24 07:33:22 2006 -0800" }, "message": "[PATCH] cpuset memory spread page cache implementation and hooks\n\nChange the page cache allocation calls to support cpuset memory spreading.\n\nSee the previous patch, cpuset_mem_spread, for an explanation of cpuset memory\nspreading.\n\nOn systems without cpusets configured in the kernel, this is no change.\n\nOn systems with cpusets configured in the kernel, but the \"memory_spread\"\ncpuset option not enabled for the current tasks cpuset, this adds a call to a\ncpuset routine and failed bit test of the processor state flag PF_SPREAD_PAGE.\n\nOn tasks in cpusets with \"memory_spread\" enabled, this adds a call to a cpuset\nroutine that computes which of the tasks mems_allowed nodes should be\npreferred for this allocation.\n\nIf memory spreading applies to a particular allocation, then any other NUMA\nmempolicy does not apply.\n\nSigned-off-by: Paul Jackson \u003cpj@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "0f8053a509ceba4a077a50ea7b77039b5559b428", "tree": "5a66021540395e20256f38a3a45174617428a832", "parents": [ "4fa4f53bf92139595cae6f1a3d972fc0a3451d29" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Mar 22 00:08:33 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Mar 22 07:54:01 2006 -0800" }, "message": "[PATCH] mm: make __put_page internal\n\nRemove __put_page from outside the core mm/. It is dangerous because it does\nnot handle compound pages nicely, and misses 1-\u003e0 transitions. If a user\nlater appears that really needs the extra speed we can reevaluate.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c25ec8f5684cb3c5dde6a67c1bbc33a449eefbe2", "tree": "ec829dac11928f6e60b797ab2aabbbb1ad77baa8", "parents": [ "d41cc702cc4ba3782ebe3b2e189633607d5ccd6a" ], "author": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Mon Jan 30 08:57:31 2006 +0000" }, "committer": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Mon Jan 30 08:57:31 2006 +0000" }, "message": "[GFS2] Export file_read_actor\n\nExport file_read_actor so that it can be used from modules since\nfunctions which take this function as an argument are already\nexported.\n\nSigned-off-by: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\n" }, { "commit": "053837fce7aa79025ed57656855df09f80175527", "tree": "05d7615894131a368fc4943f641b11acdd2ae694", "parents": [ "e236a166b2bc437769a9b8b5d19186a3761bde48" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Jan 18 17:42:27 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Jan 18 19:20:17 2006 -0800" }, "message": "[PATCH] mm: migration page refcounting fix\n\nMigration code currently does not take a reference to target page\nproperly, so between unlocking the pte and trying to take a new\nreference to the page with isolate_lru_page, anything could happen to\nit.\n\nFix this by holding the pte lock until we get a chance to elevate the\nrefcount.\n\nOther small cleanups while we\u0027re here.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c59ede7b78db329949d9cdcd7064e22d357560ef", "tree": "f9dc9d464fdad5bfd464d983e77c1af031389dda", "parents": [ "e16885c5ad624a6efe1b1bf764e075d75f65a788" ], "author": { "name": "Randy.Dunlap", "email": "rdunlap@xenotime.net", "time": "Wed Jan 11 12:17:46 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Jan 11 18:42:13 2006 -0800" }, "message": "[PATCH] move capable() to capability.h\n\n- Move capable() from sched.h to capability.h;\n\n- Use \u003clinux/capability.h\u003e where capable() is used\n\t(in include/, block/, ipc/, kernel/, a few drivers/,\n\tmm/, security/, \u0026 sound/;\n\tmany more drivers/ to go)\n\nSigned-off-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" } ], "next": "870f481793b585323fbda3e87c54efc116f46351" }