)]}' { "log": [ { "commit": "92562927826fceb2f8e69c89e28161b8c1e0b125", "tree": "e44f22406ea4d3753a4834feed7e7d271da28ab8", "parents": [ "93db628658197aa46bd7f83d429908b6f187ec9c" ], "author": { "name": "Mimi Zohar", "email": "zohar@linux.vnet.ibm.com", "time": "Tue Oct 07 14:00:12 2008 -0400" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Mon Oct 13 09:47:43 2008 +1100" }, "message": "integrity: special fs magic\n\nDiscussion on the mailing list questioned the use of these\nmagic values in userspace, concluding these values are already\nexported to userspace via statfs and their correct/incorrect\nusage is left up to the userspace application.\n\n - Move special fs magic number definitions to magic.h\n - Add magic.h include\n\nSigned-off-by: Mimi Zohar \u003czohar@us.ibm.com\u003e\nReviewed-by: James Morris \u003cjmorris@namei.org\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "529ae9aaa08378cfe2a4350bded76f32cc8ff0ce", "tree": "d3ae998f9876c72a83a022805103a92111852b21", "parents": [ "e9ba9698187ddbc0c5bfcf41de0349a662d23d02" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sat Aug 02 12:01:03 2008 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 04 21:31:34 2008 -0700" }, "message": "mm: rename page trylock\n\nConverting page lock to new locking bitops requires a change of page flag\noperation naming, so we might as well convert it to something nicer\n(!TestSetPageLocked_Lock \u003d\u003e trylock_page, SetPageLocked \u003d\u003e set_page_locked).\n\nThis also facilitates lockdeping of page lock.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nAcked-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nAcked-by: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "14fcc23fdc78e9d32372553ccf21758a9bd56fa1", "tree": "594fc0e0e85c03205ba2d80a4b4e0a8fc6ffaa8a", "parents": [ "ca5b172bd2b2fe489e7ba11cedd46ddf772d132f" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Jul 28 15:46:19 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jul 28 16:30:20 2008 -0700" }, "message": "tmpfs: fix kernel BUG in shmem_delete_inode\n\nSuSE\u0027s insserve initscript ordering program hits kernel BUG at mm/shmem.c:814\non 2.6.26. It\u0027s using posix_fadvise on directories, and the shmem_readpage\nmethod added in 2.6.23 is letting POSIX_FADV_WILLNEED allocate useless pages\nto a tmpfs directory, incrementing i_blocks count but never decrementing it.\n\nFix this by assigning shmem_aops (pointing to readpage and writepage and\nset_page_dirty) only when it\u0027s needed, on a regular file or a long symlink.\n\nMany thanks to Kel for outstanding bugreport and steps to reproduce it.\n\nReported-by: Kel Modderman \u003ckel@otaku42.de\u003e\nTested-by: Kel Modderman \u003ckel@otaku42.de\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: \u003cstable@kernel.org\u003e\t\t[2.6.25.x, 2.6.26.x]\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "51cc50685a4275c6a02653670af9f108a64e01cf", "tree": "819d47bd2b0c8a9d1835d863853804b0a0242b97", "parents": [ "d91958815d214ea365b98cbff6215383897edcb6" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Fri Jul 25 19:45:34 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jul 26 12:00:07 2008 -0700" }, "message": "SL*B: drop kmem cache argument from constructor\n\nKmem cache passed to constructor is only needed for constructors that are\nthemselves multiplexeres. Nobody uses this \"feature\", nor does anybody uses\npassed kmem cache in non-trivial way, so pass only pointer to object.\n\nNon-trivial places are:\n\tarch/powerpc/mm/init_64.c\n\tarch/powerpc/mm/hugetlbpage.c\n\nThis is flag day, yes.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nAcked-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Jon Tollefson \u003ckniht@linux.vnet.ibm.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\n[akpm@linux-foundation.org: fix arch/powerpc/mm/hugetlbpage.c]\n[akpm@linux-foundation.org: fix mm/slab.c]\n[akpm@linux-foundation.org: fix ubifs]\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e286781d5f2e9c846e012a39653a166e9d31777d", "tree": "14958fe6d8f3e0459c96c68b3034ea2433ab85ac", "parents": [ "47feff2c8eefe85099f87c43d3096855f0085ca0" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Fri Jul 25 19:45:30 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jul 26 12:00:06 2008 -0700" }, "message": "mm: speculative page references\n\nIf we can be sure that elevating the page_count on a pagecache page will\npin it, we can speculatively run this operation, and subsequently check to\nsee if we hit the right page rather than relying on holding a lock or\notherwise pinning a reference to the page.\n\nThis can be done if get_page/put_page behaves consistently throughout the\nwhole tree (ie. if we \"get\" the page after it has been used for something\nelse, we must be able to free it with a put_page).\n\nActually, there is a period where the count behaves differently: when the\npage is free or if it is a constituent page of a compound page. We need\nan atomic_inc_not_zero operation to ensure we don\u0027t try to grab the page\nin either case.\n\nThis patch introduces the core locking protocol to the pagecache (ie.\nadds page_cache_get_speculative, and tweaks some update-side code to make\nit work).\n\nThanks to Hugh for pointing out an improvement to the algorithm setting\npage_count to zero when we have control of all references, in order to\nhold off speculative getters.\n\n[kamezawa.hiroyu@jp.fujitsu.com: fix migration_entry_wait()]\n[hugh@veritas.com: fix add_to_page_cache]\n[akpm@linux-foundation.org: repair a comment]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Jeff Garzik \u003cjeff@garzik.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: \"Paul E. McKenney\" \u003cpaulmck@us.ibm.com\u003e\nReviewed-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.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": "c9b0ed51483cc2fc42bb801b6675c4231b0e4634", "tree": "1d322b4bfcaad3296752f6efcab918d1b13b50a3", "parents": [ "69029cd550284e32de13d6dd2f77b723c8a0e444" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Fri Jul 25 01:47:15 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 25 10:53:37 2008 -0700" }, "message": "memcg: helper function for relcaim from shmem.\n\nA new call, mem_cgroup_shrink_usage() is added for shmem handling and\nrelacing non-standard usage of mem_cgroup_charge/uncharge.\n\nNow, shmem calls mem_cgroup_charge() just for reclaim some pages from\nmem_cgroup. In general, shmem is used by some process group and not for\nglobal resource (like file caches). So, it\u0027s reasonable to reclaim pages\nfrom mem_cgroup where shmem is mainly used.\n\n[hugh@veritas.com: shmem_getpage release page sooner]\n[hugh@veritas.com: mem_cgroup_shrink_usage css_put]\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: YAMAMOTO Takashi \u003cyamamoto@valinux.co.jp\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "69029cd550284e32de13d6dd2f77b723c8a0e444", "tree": "b57b87e5025b6c01722f39302cb98d0dfcd58940", "parents": [ "e8589cc189f96b87348ae83ea4db38eaac624135" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Fri Jul 25 01:47:14 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 25 10:53:37 2008 -0700" }, "message": "memcg: remove refcnt from page_cgroup\n\nmemcg: performance improvements\n\nPatch Description\n 1/5 ... remove refcnt fron page_cgroup patch (shmem handling is fixed)\n 2/5 ... swapcache handling patch\n 3/5 ... add helper function for shmem\u0027s memory reclaim patch\n 4/5 ... optimize by likely/unlikely ppatch\n 5/5 ... remove redundunt check patch (shmem handling is fixed.)\n\nUnix bench result.\n\n\u003d\u003d 2.6.26-rc2-mm1 + memory resource controller\nExecl Throughput 2915.4 lps (29.6 secs, 3 samples)\nC Compiler Throughput 1019.3 lpm (60.0 secs, 3 samples)\nShell Scripts (1 concurrent) 5796.0 lpm (60.0 secs, 3 samples)\nShell Scripts (8 concurrent) 1097.7 lpm (60.0 secs, 3 samples)\nShell Scripts (16 concurrent) 565.3 lpm (60.0 secs, 3 samples)\nFile Read 1024 bufsize 2000 maxblocks 1022128.0 KBps (30.0 secs, 3 samples)\nFile Write 1024 bufsize 2000 maxblocks 544057.0 KBps (30.0 secs, 3 samples)\nFile Copy 1024 bufsize 2000 maxblocks 346481.0 KBps (30.0 secs, 3 samples)\nFile Read 256 bufsize 500 maxblocks 319325.0 KBps (30.0 secs, 3 samples)\nFile Write 256 bufsize 500 maxblocks 148788.0 KBps (30.0 secs, 3 samples)\nFile Copy 256 bufsize 500 maxblocks 99051.0 KBps (30.0 secs, 3 samples)\nFile Read 4096 bufsize 8000 maxblocks 2058917.0 KBps (30.0 secs, 3 samples)\nFile Write 4096 bufsize 8000 maxblocks 1606109.0 KBps (30.0 secs, 3 samples)\nFile Copy 4096 bufsize 8000 maxblocks 854789.0 KBps (30.0 secs, 3 samples)\nDc: sqrt(2) to 99 decimal places 126145.2 lpm (30.0 secs, 3 samples)\n\n INDEX VALUES\nTEST BASELINE RESULT INDEX\n\nExecl Throughput 43.0 2915.4 678.0\nFile Copy 1024 bufsize 2000 maxblocks 3960.0 346481.0 875.0\nFile Copy 256 bufsize 500 maxblocks 1655.0 99051.0 598.5\nFile Copy 4096 bufsize 8000 maxblocks 5800.0 854789.0 1473.8\nShell Scripts (8 concurrent) 6.0 1097.7 1829.5\n \u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n FINAL SCORE 991.3\n\n\u003d\u003d 2.6.26-rc2-mm1 + this set \u003d\u003d\nExecl Throughput 3012.9 lps (29.9 secs, 3 samples)\nC Compiler Throughput 981.0 lpm (60.0 secs, 3 samples)\nShell Scripts (1 concurrent) 5872.0 lpm (60.0 secs, 3 samples)\nShell Scripts (8 concurrent) 1120.3 lpm (60.0 secs, 3 samples)\nShell Scripts (16 concurrent) 578.0 lpm (60.0 secs, 3 samples)\nFile Read 1024 bufsize 2000 maxblocks 1003993.0 KBps (30.0 secs, 3 samples)\nFile Write 1024 bufsize 2000 maxblocks 550452.0 KBps (30.0 secs, 3 samples)\nFile Copy 1024 bufsize 2000 maxblocks 347159.0 KBps (30.0 secs, 3 samples)\nFile Read 256 bufsize 500 maxblocks 314644.0 KBps (30.0 secs, 3 samples)\nFile Write 256 bufsize 500 maxblocks 151852.0 KBps (30.0 secs, 3 samples)\nFile Copy 256 bufsize 500 maxblocks 101000.0 KBps (30.0 secs, 3 samples)\nFile Read 4096 bufsize 8000 maxblocks 2033256.0 KBps (30.0 secs, 3 samples)\nFile Write 4096 bufsize 8000 maxblocks 1611814.0 KBps (30.0 secs, 3 samples)\nFile Copy 4096 bufsize 8000 maxblocks 847979.0 KBps (30.0 secs, 3 samples)\nDc: sqrt(2) to 99 decimal places 128148.7 lpm (30.0 secs, 3 samples)\n\n INDEX VALUES\nTEST BASELINE RESULT INDEX\n\nExecl Throughput 43.0 3012.9 700.7\nFile Copy 1024 bufsize 2000 maxblocks 3960.0 347159.0 876.7\nFile Copy 256 bufsize 500 maxblocks 1655.0 101000.0 610.3\nFile Copy 4096 bufsize 8000 maxblocks 5800.0 847979.0 1462.0\nShell Scripts (8 concurrent) 6.0 1120.3 1867.2\n \u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n FINAL SCORE 1004.6\n\nThis patch:\n\nRemove refcnt from page_cgroup().\n\nAfter this,\n\n * A page is charged only when !page_mapped() \u0026\u0026 no page_cgroup is assigned.\n\t* Anon page is newly mapped.\n\t* File page is added to mapping-\u003etree.\n\n * A page is uncharged only when\n\t* Anon page is fully unmapped.\n\t* File page is removed from LRU.\n\nThere is no change in behavior from user\u0027s view.\n\nThis patch also removes unnecessary calls in rmap.c which was used only for\nrefcnt mangement.\n\n[akpm@linux-foundation.org: fix warning]\n[hugh@veritas.com: fix shmem_unuse_inode charging]\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: YAMAMOTO Takashi \u003cyamamoto@valinux.co.jp\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bcd78e49613c41b5bed96fa288e983876f286a59", "tree": "0ad2591ca2e0d46923d8ec489ef7378f1a3c0d8e", "parents": [ "11fa977ecde652ab324dd79c179deb52e82a8df1" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Wed Jul 23 21:27:35 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jul 24 10:47:16 2008 -0700" }, "message": "tmpfs: support aio\n\nWe have a request for tmpfs to support the AIO interface: easily done, no\nmore than replacing the old shmem_file_read by shmem_file_aio_read,\ncribbed from generic_file_aio_read. (In 2.6.25 its write side was already\nchanged to use generic_file_aio_write.)\n\nIncorporate cleanups from Andrew Morton and Harvey Harrison.\n\nTests out fine with LTP\u0027s ltp-aiodio.sh, given hacks (not included) to\nsupport O_DIRECT. tmpfs cannot honestly support O_DIRECT: its\ncache-avoiding-IO nature is at odds with direct IO-avoiding-cache.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nTested-by: Lawrence Greenfield \u003cleg@google.com\u003e\nCc: Christoph Rohland \u003chans-christoph.rohland@sap.com\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Zach Brown \u003czach.brown@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": "e4ad08fe64afca4ef79ecc4c624e6e871688da0d", "tree": "5b8b390b874700041dc0c095e8ba9ac3ed42ea77", "parents": [ "76f1418b485da2707531178e517bbb5cf06b3c76" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Wed Apr 30 00:54:37 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 30 08:29:50 2008 -0700" }, "message": "mm: bdi: add separate writeback accounting capability\n\nAdd a new BDI capability flag: BDI_CAP_NO_ACCT_WB. If this flag is\nset, then don\u0027t update the per-bdi writeback stats from\ntest_set_page_writeback() and test_clear_page_writeback().\n\nMisc cleanups:\n\n - convert bdi_cap_writeback_dirty() and friends to static inline functions\n - create a flag that includes all three dirty/writeback related flags,\n since almst all users will want to have them toghether\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "71fe804b6d56d6a7aed680e096901434cef6a2c3", "tree": "3dd437e09fe6ee57644c72c79e08c562d4bb6389", "parents": [ "3f226aa1cbc006f9d90f22084f519ad2a1286cd8" ], "author": { "name": "Lee Schermerhorn", "email": "lee.schermerhorn@hp.com", "time": "Mon Apr 28 02:13:26 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:25 2008 -0700" }, "message": "mempolicy: use struct mempolicy pointer in shmem_sb_info\n\nThis patch replaces the mempolicy mode, mode_flags, and nodemask in the\nshmem_sb_info struct with a struct mempolicy pointer, initialized to NULL.\nThis removes dependency on the details of mempolicy from shmem.c and hugetlbfs\ninode.c and simplifies the interfaces.\n\nmpol_parse_str() in mempolicy.c is changed to return, via a pointer to a\npointer arg, a struct mempolicy pointer on success. For MPOL_DEFAULT, the\nreturned pointer is NULL. Further, mpol_parse_str() now takes a \u0027no_context\u0027\nargument that causes the input nodemask to be stored in the w.user_nodemask of\nthe created mempolicy for use when the mempolicy is installed in a tmpfs inode\nshared policy tree. At that time, any cpuset contextualization is applied to\nthe original input nodemask. This preserves the previous behavior where the\ninput nodemask was stored in the superblock. We can think of the returned\nmempolicy as \"context free\".\n\nBecause mpol_parse_str() is now calling mpol_new(), we can remove from\nmpol_to_str() the semantic checks that mpol_new() already performs.\n\nAdd \u0027no_context\u0027 parameter to mpol_to_str() to specify that it should format\nthe nodemask in w.user_nodemask for \u0027bind\u0027 and \u0027interleave\u0027 policies.\n\nChange mpol_shared_policy_init() to take a pointer to a \"context free\" struct\nmempolicy and to create a new, \"contextualized\" mempolicy using the mode,\nmode_flags and user_nodemask from the input mempolicy.\n\n Note: we know that the mempolicy passed to mpol_to_str() or\n mpol_shared_policy_init() from a tmpfs superblock is \"context free\". This\n is currently the only instance thereof. However, if we found more uses for\n this concept, and introduced any ambiguity as to whether a mempolicy was\n context free or not, we could add another internal mode flag to identify\n context free mempolicies. Then, we could remove the \u0027no_context\u0027 argument\n from mpol_to_str().\n\nAdded shmem_get_sbmpol() to return a reference counted superblock mempolicy,\nif one exists, to pass to mpol_shared_policy_init(). We must add the\nreference under the sb stat_lock to prevent races with replacement of the mpol\nby remount. This reference is removed in mpol_shared_policy_init().\n\n[akpm@linux-foundation.org: build fix]\n[akpm@linux-foundation.org: another build fix]\n[akpm@linux-foundation.org: yet another build fix]\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "095f1fc4ebf36c64fddf9b6db29b1ab5517378e6", "tree": "39aae9d5b05d8501d1794e92c6115331c0a40848", "parents": [ "2291990ab36b4b2d8a81b1f92e7a046e51632a60" ], "author": { "name": "Lee Schermerhorn", "email": "lee.schermerhorn@hp.com", "time": "Mon Apr 28 02:13:23 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:24 2008 -0700" }, "message": "mempolicy: rework shmem mpol parsing and display\n\nmm/shmem.c currently contains functions to parse and display memory policy\nstrings for the tmpfs \u0027mpol\u0027 mount option. Move this to mm/mempolicy.c with\nthe rest of the mempolicy support. With subsequent patches, we\u0027ll be able to\nremove knowledge of the details [mode, flags, policy, ...] completely from\nshmem.c\n\n1) replace shmem_parse_mpol() in mm/shmem.c with mpol_parse_str() in\n mm/mempolicy.c. Rework to use the policy_types[] array [used by\n mpol_to_str()] to look up mode by name.\n\n2) use mpol_to_str() to format policy for shmem_show_mpol(). mpol_to_str()\n expects a pointer to a struct mempolicy, so temporarily construct one.\n This will be replaced with a reference to a struct mempolicy in the tmpfs\n superblock in a subsequent patch.\n\n NOTE 1: I changed mpol_to_str() to use a colon \u0027:\u0027 rather than an equal\n sign \u0027\u003d\u0027 as the nodemask delimiter to match mpol_parse_str() and the\n tmpfs/shmem mpol mount option formatting that now uses mpol_to_str(). This\n is a user visible change to numa_maps, but then the addition of the mode\n flags already changed the display. It makes sense to me to have the mounts\n and numa_maps display the policy in the same format. However, if anyone\n objects strongly, I can pass the desired nodemask delimeter as an arg to\n mpol_to_str().\n\n Note 2: Like show_numa_map(), I don\u0027t check the return code from\n mpol_to_str(). I do use a longer buffer than the one provided by\n show_numa_map(), which seems to have sufficed so far.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "52cd3b074050dd664380b5e8cfc85d4a6ed8ad48", "tree": "fcfcf55c0e81376ea34919fab26e29bedd7f3b88", "parents": [ "a6020ed759404372e8be2b276e85e51735472cc9" ], "author": { "name": "Lee Schermerhorn", "email": "lee.schermerhorn@hp.com", "time": "Mon Apr 28 02:13:16 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:24 2008 -0700" }, "message": "mempolicy: rework mempolicy Reference Counting [yet again]\n\nAfter further discussion with Christoph Lameter, it has become clear that my\nearlier attempts to clean up the mempolicy reference counting were a bit of\noverkill in some areas, resulting in superflous ref/unref in what are usually\nfast paths. In other areas, further inspection reveals that I botched the\nunref for interleave policies.\n\nA separate patch, suitable for upstream/stable trees, fixes up the known\nerrors in the previous attempt to fix reference counting.\n\nThis patch reworks the memory policy referencing counting and, one hopes,\nsimplifies the code. Maybe I\u0027ll get it right this time.\n\nSee the update to the numa_memory_policy.txt document for a discussion of\nmemory policy reference counting that motivates this patch.\n\nSummary:\n\nLookup of mempolicy, based on (vma, address) need only add a reference for\nshared policy, and we need only unref the policy when finished for shared\npolicies. So, this patch backs out all of the unneeded extra reference\ncounting added by my previous attempt. It then unrefs only shared policies\nwhen we\u0027re finished with them, using the mpol_cond_put() [conditional put]\nhelper function introduced by this patch.\n\nNote that shmem_swapin() calls read_swap_cache_async() with a dummy vma\ncontaining just the policy. read_swap_cache_async() can call alloc_page_vma()\nmultiple times, so we can\u0027t let alloc_page_vma() unref the shared policy in\nthis case. To avoid this, we make a copy of any non-null shared policy and\nremove the MPOL_F_SHARED flag from the copy. This copy occurs before reading\na page [or multiple pages] from swap, so the overhead should not be an issue\nhere.\n\nI introduced a new static inline function \"mpol_cond_copy()\" to copy the\nshared policy to an on-stack policy and remove the flags that would require a\nconditional free. The current implementation of mpol_cond_copy() assumes that\nthe struct mempolicy contains no pointers to dynamically allocated structures\nthat must be duplicated or reference counted during copy.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f0be3d32b05d3fea2fcdbbb81a39dac2a7163169", "tree": "5794ce6a8befbce82cd3e44ff15fbf3bb5f2f3bf", "parents": [ "3b1163006332302117b1b2acf226d4014ff46525" ], "author": { "name": "Lee Schermerhorn", "email": "lee.schermerhorn@hp.com", "time": "Mon Apr 28 02:13:08 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:23 2008 -0700" }, "message": "mempolicy: rename mpol_free to mpol_put\n\nThis is a change that was requested some time ago by Mel Gorman. Makes sense\nto me, so here it is.\n\nNote: I retain the name \"mpol_free_shared_policy()\" because it actually does\nfree the shared_policy, which is NOT a reference counted object. However, ...\n\nThe mempolicy object[s] referenced by the shared_policy are reference counted,\nso mpol_put() is used to release the reference held by the shared_policy. The\nmempolicy might not be freed at this time, because some task attached to the\nshared object associated with the shared policy may be in the process of\nallocating a page based on the mempolicy. In that case, the task performing\nthe allocation will hold a reference on the mempolicy, obtained via\nmpol_shared_policy_lookup(). The mempolicy will be freed when all tasks\nholding such a reference have called mpol_put() for the mempolicy.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a43361cf3cb6fb6431fdbfb0f3ef26a334826160", "tree": "8ec343f73bb61c1ef08a32c78e912a7506c932bf", "parents": [ "3e1f064562fcff7bf3856bc1d00dfa84d4f121cc" ], "author": { "name": "Lee Schermerhorn", "email": "Lee.Schermerhorn@hp.com", "time": "Mon Apr 28 02:12:36 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:20 2008 -0700" }, "message": "mempolicy: fix parsing of tmpfs mpol mount option\n\nParsing of new mode flags in the tmpfs mpol mount option is slightly broken:\n\nSetting a valid flag works OK:\n\t#mount -o remount,mpol\u003dbind\u003dstatic:1-2 /dev/shm\n\t#mount\n\t...\n\ttmpfs on /dev/shm type tmpfs (rw,mpol\u003dbind\u003dstatic:1-2)\n\t...\n\nHowever, we can\u0027t remove them or change them, once we\u0027ve\nset a valid flag:\n\n\t#mount -o remount,mpol\u003dbind:1-2 /dev/shm\n\t#mount\n\t...\n\ttmpfs on /dev/shm type tmpfs (rw,mpol\u003dbind:1-2)\n\t...\n\nIt SAYS it removed it, but that\u0027s just a copy of the input\nstring. If we now try to set it to a different flag, we\nget:\n\n\t#mount -o remount,mpol\u003dbind\u003drelative:1-2 /dev/shm\n\tmount: /dev/shm not mounted already, or bad option\n\nAnd on the console, we see:\n\ttmpfs: Bad value \u0027bind\u0027 for mount option \u0027mpol\u0027\n\t ^ lost remainder of string\n\nFurthermore, bogus flags are accepted with out error.\nGranted, they are a no-op:\n\n\t#mount -o remount,mpol\u003dinterleave\u003dfoo:0-3 /dev/shm\n\t#mount\n\t...\n\ttmpfs on /dev/shm type tmpfs (rw,mpol\u003dinterleave\u003dfoo:0-3)\n\nAgain, that\u0027s just a copy of the input string shown by the mount command.\n\nThis patch fixes the behavior by pre-zeroing the flags so that only one of the\nmutually exclusive flags can be set at one time. It also reports an error\nwhen an unrecognized flag is specified.\n\nThe check for both flags being set is removed because it can\u0027t happen with\nthis implementation. If we ever want to support multiple non-exclusive flags,\nthis area will need rework and we will need to check that any mutually\nexclusive flags aren\u0027t specified.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Eric Whitney \u003ceric.whitney@hp.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4c50bc0116cf3cc35e7152d6a8424b4db65f52d6", "tree": "99c617602cc1946fc86b48e9a35f14f9f354cf67", "parents": [ "7ea931c9fc80c4d0a4306c30ec92eb0f1d922a0b" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Mon Apr 28 02:12:30 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:19 2008 -0700" }, "message": "mempolicy: add MPOL_F_RELATIVE_NODES flag\n\nAdds another optional mode flag, MPOL_F_RELATIVE_NODES, that specifies\nnodemasks passed via set_mempolicy() or mbind() should be considered relative\nto the current task\u0027s mems_allowed.\n\nWhen the mempolicy is created, the passed nodemask is folded and mapped onto\nthe current task\u0027s mems_allowed. For example, consider a task using\nset_mempolicy() to pass MPOL_INTERLEAVE | MPOL_F_RELATIVE_NODES with a\nnodemask of 1-3. If current\u0027s mems_allowed is 4-7, the effected nodemask is\n5-7 (the second, third, and fourth node of mems_allowed).\n\nIf the same task is attached to a cpuset, the mempolicy nodemask is rebound\neach time the mems are changed. Some possible rebinds and results are:\n\n\tmems\t\t\tresult\n\t1-3\t\t\t1-3\n\t1-7\t\t\t2-4\n\t1,5-6\t\t\t1,5-6\n\t1,5-7\t\t\t5-7\n\nLikewise, the zonelist built for MPOL_BIND acts on the set of zones assigned\nto the resultant nodemask from the relative remap.\n\nIn the MPOL_PREFERRED case, the preferred node is remapped from the currently\neffected nodemask to the relative nodemask.\n\nThis mempolicy mode flag was conceived of by Paul Jackson \u003cpj@sgi.com\u003e.\n\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f5b087b52f1710eb0bf15a2d2b030c51a6a1ca9e", "tree": "66336235822f59215707dfa501e1d2b66b38a015", "parents": [ "028fec414d803117eb4b2ed12acb4dd5da65b32d" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Mon Apr 28 02:12:27 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:19 2008 -0700" }, "message": "mempolicy: add MPOL_F_STATIC_NODES flag\n\nAdd an optional mempolicy mode flag, MPOL_F_STATIC_NODES, that suppresses the\nnode remap when the policy is rebound.\n\nAdds another member to struct mempolicy, nodemask_t user_nodemask, as part of\na union with cpuset_mems_allowed:\n\n\tstruct mempolicy {\n\t\t...\n\t\tunion {\n\t\t\tnodemask_t cpuset_mems_allowed;\n\t\t\tnodemask_t user_nodemask;\n\t\t} w;\n\t}\n\nthat stores the the nodemask that the user passed when he or she created the\nmempolicy via set_mempolicy() or mbind(). When using MPOL_F_STATIC_NODES,\nwhich is passed with any mempolicy mode, the user\u0027s passed nodemask\nintersected with the VMA or task\u0027s allowed nodes is always used when\ndetermining the preferred node, setting the MPOL_BIND zonelist, or creating\nthe interleave nodemask. This happens whenever the policy is rebound,\nincluding when a task\u0027s cpuset assignment changes or the cpuset\u0027s mems are\nchanged.\n\nThis creates an interesting side-effect in that it allows the mempolicy\n\"intent\" to lie dormant and uneffected until it has access to the node(s) that\nit desires. For example, if you currently ask for an interleaved policy over\na set of nodes that you do not have access to, the mempolicy is not created\nand the task continues to use the previous policy. With this change, however,\nit is possible to create the same mempolicy; it is only effected when access\nto nodes in the nodemask is acquired.\n\nIt is also possible to mount tmpfs with the static nodemask behavior when\nspecifying a node or nodemask. To do this, simply add \"\u003dstatic\" immediately\nfollowing the mempolicy mode at mount time:\n\n\tmount -o remount mpol\u003dinterleave\u003dstatic:1-3\n\nAlso removes mpol_check_policy() and folds its logic into mpol_new() since it\nis now obsoleted. The unused vma_mpol_equal() is also removed.\n\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "028fec414d803117eb4b2ed12acb4dd5da65b32d", "tree": "427f37ea0331369c1babc55c424c4fd2ac3b39f5", "parents": [ "a3b51e0142d1be156ac697eaadadd6cfbb7ba32b" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Mon Apr 28 02:12:25 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:19 2008 -0700" }, "message": "mempolicy: support optional mode flags\n\nWith the evolution of mempolicies, it is necessary to support mempolicy mode\nflags that specify how the policy shall behave in certain circumstances. The\nmost immediate need for mode flag support is to suppress remapping the\nnodemask of a policy at the time of rebind.\n\nBoth the mempolicy mode and flags are passed by the user in the \u0027int policy\u0027\nformal of either the set_mempolicy() or mbind() syscall. A new constant,\nMPOL_MODE_FLAGS, represents the union of legal optional flags that may be\npassed as part of this int. Mempolicies that include illegal flags as part of\ntheir policy are rejected as invalid.\n\nAn additional member to struct mempolicy is added to support the mode flags:\n\n\tstruct mempolicy {\n\t\t...\n\t\tunsigned short policy;\n\t\tunsigned short flags;\n\t}\n\nThe splitting of the \u0027int\u0027 actual passed by the user is done in\nsys_set_mempolicy() and sys_mbind() for their respective syscalls. This is\ndone by intersecting the actual with MPOL_MODE_FLAGS, rejecting the syscall of\nthere are additional flags, and storing it in the new \u0027flags\u0027 member of struct\nmempolicy. The intersection of the actual with ~MPOL_MODE_FLAGS is stored in\nthe \u0027policy\u0027 member of the struct and all current users of pol-\u003epolicy remain\nunchanged.\n\nThe union of the policy mode and optional mode flags is passed back to the\nuser in get_mempolicy().\n\nThis combination of mode and flags within the same actual does not break\nuserspace code that relies on get_mempolicy(\u0026policy, ...) and either\n\n\tswitch (policy) {\n\tcase MPOL_BIND:\n\t\t...\n\tcase MPOL_INTERLEAVE:\n\t\t...\n\t};\n\nstatements or\n\n\tif (policy \u003d\u003d MPOL_INTERLEAVE) {\n\t\t...\n\t}\n\nstatements. Such applications would need to use optional mode flags when\ncalling set_mempolicy() or mbind() for these previously implemented statements\nto stop working. If an application does start using optional mode flags, it\nwill need to mask the optional flags off the policy in switch and conditional\nstatements that only test mode.\n\nAn additional member is also added to struct shmem_sb_info to store the\noptional mode flags.\n\n[hugh@veritas.com: shmem mpol: fix build warning]\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a3b51e0142d1be156ac697eaadadd6cfbb7ba32b", "tree": "da9e527316f112c09f0bc16553c64e3c87125c82", "parents": [ "1b27d05b6e21249d2338be26dfcbe8f8d8ff8a5b" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Mon Apr 28 02:12:23 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:19 2008 -0700" }, "message": "mempolicy: convert MPOL constants to enum\n\nThe mempolicy mode constants, MPOL_DEFAULT, MPOL_PREFERRED, MPOL_BIND, and\nMPOL_INTERLEAVE, are better declared as part of an enum since they are\nsequentially numbered and cannot be combined.\n\nThe policy member of struct mempolicy is also converted from type short to\ntype unsigned short. A negative policy does not have any legitimate meaning,\nso it is possible to change its type in preparation for adding optional mode\nflags later.\n\nThe equivalent member of struct shmem_sb_info is also changed from int to\nunsigned short.\n\nFor compatibility, the policy formal to get_mempolicy() remains as a pointer\nto an int:\n\n\tint get_mempolicy(int *policy, unsigned long *nmask,\n\t\t\t unsigned long maxnode, unsigned long addr,\n\t\t\t unsigned long flags);\n\nalthough the only possible values is the range of type unsigned short.\n\nCc: Paul Jackson \u003cpj@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "46711810200c50e639ffc52e755b3dba9b4c82a3", "tree": "0279398b04ff7b1609bf689f56c21793cbc40d57", "parents": [ "7682486b3ee06f800d5b11033371c7c5e92e3057" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Wed Mar 19 17:00:41 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 19 18:53:35 2008 -0700" }, "message": "mm/shmem and tiny-shmem: fix some kernel-doc\n\nConvert tiny-shmem.c function comments to kernel-doc. Add parameters and\nconvert/fix other kernel-doc in shmem.c.\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7e924aafa4b03ff71de34af8553d9a1ebc86c071", "tree": "21735b7369ede27f34c41184b0a686020b80e2c6", "parents": [ "9442ec9df40d952b0de185ae5638a74970388e01" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Tue Mar 04 14:29:08 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Mar 04 16:35:15 2008 -0800" }, "message": "memcg: mem_cgroup_charge never NULL\n\nMy memcgroup patch to fix hang with shmem/tmpfs added NULL page handling to\nmem_cgroup_charge_common. It seemed convenient at the time, but hard to\njustify now: there\u0027s a perfectly appropriate swappage to charge and uncharge\ninstead, this is not on any hot path through shmem_getpage, and no performance\nhit was observed from the slight extra overhead.\n\nSo revert that NULL page handling from mem_cgroup_charge_common; and make it\nclearer by bringing page_cgroup_assign_new_page_cgroup into its body - that\nwas a helper I found more of a hindrance to understanding.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hirokazu Takahashi \u003ctaka@valinux.co.jp\u003e\nCc: YAMAMOTO Takashi \u003cyamamoto@valinux.co.jp\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b76db735407a26c1036fdfef249ddc35eb969bc4", "tree": "02a9eb85b34765bc1eb82d632b1913ce79b8a6d6", "parents": [ "680d794babebc74484c141448baa9b95b211cf5e" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Fri Feb 08 04:21:49 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:41 2008 -0800" }, "message": "mount-options-fix-tmpfs-fix\n\nDocumentation/SubmitCheckist, please.\n\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "680d794babebc74484c141448baa9b95b211cf5e", "tree": "fa8b9c085fceaed12b54ea20a8c04696c750053e", "parents": [ "90d09e141bb23bf0df5e31c40fb3175c17e8bda2" ], "author": { "name": "akpm@linux-foundation.org", "email": "akpm@linux-foundation.org", "time": "Fri Feb 08 04:21:48 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:41 2008 -0800" }, "message": "mount options: fix tmpfs\n\nAdd .show_options super operation to tmpfs.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "82369553d6d3bc67c54129a02e0bc0b5b88f3045", "tree": "1d80a6cc9f5840550ad025b32ac8ef8fd915fd98", "parents": [ "3be91277e754c7db04eae145ba622b3a3e3ad96d" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Thu Feb 07 00:14:22 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Feb 07 08:42:20 2008 -0800" }, "message": "memcgroup: fix hang with shmem/tmpfs\n\nThe memcgroup regime relies upon a cgroup reclaiming pages from itself within\nadd_to_page_cache: which may involve some waiting. Whereas shmem and tmpfs\nrely upon using add_to_page_cache while holding a spinlock: when it cannot\nwait. The consequence is that when a cgroup reaches its limit, shmem_getpage\njust hangs - unless there is outside memory pressure too, neither kswapd nor\nradix_tree_preload get it out of the retry loop.\n\nIn most cases we can mem_cgroup_cache_charge the page waitably first, to\nattach the page_cgroup in advance, so add_to_page_cache will do no more than\nincrement a count; then mem_cgroup_uncharge_page after (in both success and\nfailure cases) to balance the books again.\n\nAnd where there used to be a congestion_wait for kswapd (recently made\nredundant by radix_tree_preload), use mem_cgroup_cache_charge with NULL page\nto go through a cycle of allocation and freeing, without accounting to any\nparticular page, and without updating the statistics vector. This brings the\ncgroup below its limit so the next try usually succeeds.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "42492594043d621a7910ff5877c3eb9202870b45", "tree": "9188d112c019a189606847dc1d90ccc63c1bacf2", "parents": [ "3729145821e3088a0c3c4183037fde356204bf97" ], "author": { "name": "David P. Quigley", "email": "dpquigl@tycho.nsa.gov", "time": "Mon Feb 04 22:29:39 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:20 2008 -0800" }, "message": "VFS/Security: Rework inode_getsecurity and callers to return resulting buffer\n\nThis patch modifies the interface to inode_getsecurity to have the function\nreturn a buffer containing the security blob and its length via parameters\ninstead of relying on the calling function to give it an appropriately sized\nbuffer.\n\nSecurity blobs obtained with this function should be freed using the\nrelease_secctx LSM hook. This alleviates the problem of the caller having to\nguess a length and preallocate a buffer for this function allowing it to be\nused elsewhere for Labeled NFS.\n\nThe patch also removed the unused err parameter. The conversion is similar to\nthe one performed by Al Viro for the security_getprocattr hook.\n\nSigned-off-by: David P. Quigley \u003cdpquigl@tycho.nsa.gov\u003e\nCc: Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nCc: Chris Wright \u003cchrisw@sous-sol.org\u003e\nAcked-by: James Morris \u003cjmorris@namei.org\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nCc: Casey Schaufler \u003ccasey@schaufler-ca.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\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": "1b1b32f2c6f6bb32535d2da62075b51c980880eb", "tree": "686aac685a4c04f085dc17cc1a05910149a04933", "parents": [ "b409f9fcf04692c0f603d28c73d2e3dfed27bf54" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Feb 04 22:28:55 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:16 2008 -0800" }, "message": "tmpfs: fix shmem_swaplist races\n\nIntensive swapoff testing shows shmem_unuse spinning on an entry in\nshmem_swaplist pointing to itself: how does that come about? Days pass...\n\nFirst guess is this: shmem_delete_inode tests list_empty without taking the\nglobal mutex (so the swapping case doesn\u0027t slow down the common case); but\nthere\u0027s an instant in shmem_unuse_inode\u0027s list_move_tail when the list entry\nmay appear empty (a rare case, because it\u0027s actually moving the head not the\nthe list member). So there\u0027s a danger of leaving the inode on the swaplist\nwhen it\u0027s freed, then reinitialized to point to itself when reused. Fix that\nby skipping the list_move_tail when it\u0027s a no-op, which happens to plug this.\n\nBut this same spinning then surfaces on another machine. Ah, I\u0027d never\nsuspected it, but shmem_writepage\u0027s swaplist manipulation is unsafe: though we\nstill hold page lock, which would hold off inode deletion if the page were in\npagecache, it doesn\u0027t hold off once it\u0027s in swapcache (free_swap_and_cache\ndoesn\u0027t wait on locked pages). Hmm: we could put the the inode on swaplist\nearlier, but then shmem_unuse_inode could never prune unswapped inodes.\n\nFix this with an igrab before dropping info-\u003elock, as in shmem_unuse_inode;\nthough I am a little uneasy about the iput which has to follow - it works, and\nI see nothing wrong with it, but it is surprising that shmem inode deletion\nmay now occur below shmem_writepage. Revisit this fix later?\n\nAnd while we\u0027re looking at these races: the way shmem_unuse tests swapped\nwithout holding info-\u003elock looks unsafe, if we\u0027ve more than one swap area: a\nracing shmem_writepage on another page of the same inode could be putting it\nin swapcache, just as we\u0027re deciding to remove the inode from swaplist -\nthere\u0027s a danger of going on swap without being listed, so a later swapoff\nwould hang, being unable to locate the entry. Move that test and removal down\ninto shmem_unuse_inode, once info-\u003elock is held.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b409f9fcf04692c0f603d28c73d2e3dfed27bf54", "tree": "de287c277045c72c485867a52b37f4e7d0c5815a", "parents": [ "2e0e26c76a35de8f8bec6b2b917518cfeb52888a" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Feb 04 22:28:54 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:15 2008 -0800" }, "message": "tmpfs: radix_tree_preloading\n\nNick has observed that shmem.c still uses GFP_ATOMIC when adding to page cache\nor swap cache, without any radix tree preload: so tending to deplete emergency\nreserves of memory.\n\nGFP_ATOMIC remains appropriate in shmem_writepage\u0027s add_to_swap_cache: it\u0027s\nbeing called under memory pressure, so must not wait for more memory to become\navailable. But shmem_unuse_inode now has a window in which it can and should\npreload with GFP_KERNEL, and say GFP_NOWAIT instead of GFP_ATOMIC in its\nadd_to_page_cache.\n\nshmem_getpage is not so straightforward: its filepage/swappage integrity\nrelies upon exchanging between caches under spinlock, and it would need a lot\nof restructuring to place the preloads correctly. Instead, follow its pattern\nof retrying on races: use GFP_NOWAIT instead of GFP_ATOMIC in\nadd_to_page_cache, and begin each circuit of the repeat loop with a sleeping\nradix_tree_preload, followed immediately by radix_tree_preload_end - that\nwon\u0027t guarantee success in the next add_to_page_cache, but doesn\u0027t need to.\n\nAnd we can then remove that bothersome congestion_wait: when needed, it\u0027ll\nautomatically get done in the course of the radix_tree_preload.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nLooks-good-to: 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": "2e0e26c76a35de8f8bec6b2b917518cfeb52888a", "tree": "1357781bfe035c2401c65b2d0203385a47516bf5", "parents": [ "cb5f7b9a47963d9238398cd0c2676473e3c6896d" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Feb 04 22:28:53 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:15 2008 -0800" }, "message": "tmpfs: open a window in shmem_unuse_inode\n\nThere are a couple of reasons (patches follow) why it would be good to open a\nwindow for sleep in shmem_unuse_inode, between its search for a matching swap\nentry, and its handling of the entry found.\n\nshmem_unuse_inode must then use igrab to hold the inode against deletion in\nthat window, and its corresponding iput might result in deletion: so it had\nbetter unlock_page before the iput, and might as well release the page too.\n\nNor is there any need to hold on to shmem_swaplist_mutex once we know we\u0027ll\nleave the loop. So this unwinding moves from try_to_unuse and shmem_unuse\ninto shmem_unuse_inode, in the case when it finds a match.\n\nLet try_to_unuse break on error in the shmem_unuse case, as it does in the\nunuse_mm case: though at this point in the series, no error to break on.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "cb5f7b9a47963d9238398cd0c2676473e3c6896d", "tree": "bc2eed3d7c2c3787f50030c7c493c4295eaf673c", "parents": [ "a0ee5ec520ede1dc8e2194623bcebfd9fab408f2" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Feb 04 22:28:52 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:15 2008 -0800" }, "message": "tmpfs: make shmem_unuse more preemptible\n\nshmem_unuse is at present an unbroken search through every swap vector page of\nevery tmpfs file which might be swapped, all under shmem_swaplist_lock. This\ndates from long ago, when the caller held mmlist_lock over it all too: long\ngone, but there\u0027s never been much pressure for preemptible swapoff.\n\nMake it a little more preemptible, replacing shmem_swaplist_lock by\nshmem_swaplist_mutex, inserting a cond_resched in the main loop, and a\ncond_resched_lock (on info-\u003elock) at one convenient point in the\nshmem_unuse_inode loop, where it has no outstanding kmap_atomic.\n\nIf we\u0027re serious about preemptible swapoff, there\u0027s much further to go e.g.\nI\u0027m stupid to let the kmap_atomics of the decreasingly significant HIGHMEM\ncase dictate preemptiblility for other configs. But as in the earlier patch\nto make swapoff scan ptes preemptibly, my hidden agenda is really towards\nmaking memcgroups work, hardly about preemptibility at all.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a0ee5ec520ede1dc8e2194623bcebfd9fab408f2", "tree": "74a3668798213661a9e62a1b576f081f1ce44838", "parents": [ "d9fe526a83b84edc9c5ff217a00c896bfc20b2ce" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Feb 04 22:28:51 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:15 2008 -0800" }, "message": "tmpfs: allocate on read when stacked\n\ntmpfs is expected to limit the memory used (unless mounted with nr_blocks\u003d0 or\nsize\u003d0). But if a stacked filesystem such as unionfs gets pages from a sparse\ntmpfs file by reading holes, and then writes to them, it can easily exceed any\nsuch limit at present.\n\nSo suppress the SGP_READ \"don\u0027t allocate page\" ZERO_PAGE optimization when\nreading for the kernel (a KERNEL_DS check, ugh, sorry about that). Indeed,\npessimistically mark such pages as dirty, so they cannot get reclaimed and\nunaccounted by mistake. The venerable shmem_recalc_inode code (originally to\naccount for the reclaim of clean pages) suffices to get the accounting right\nwhen swappages are dropped in favour of more uptodate filepages.\n\nThis also fixes the NULL shmem_swp_entry BUG or oops in shmem_writepage,\ncaused by unionfs writing to a very sparse tmpfs file: to minimize memory\nallocation in swapout, tmpfs requires the swap vector be allocated upfront,\nwhich wasn\u0027t always happening in this stacked case.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d9fe526a83b84edc9c5ff217a00c896bfc20b2ce", "tree": "aecb9dbd92108915ba255df8f04d106c2099bf48", "parents": [ "73b1262fa43a778b1e154deea632cdef5009d6a1" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Feb 04 22:28:51 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:15 2008 -0800" }, "message": "tmpfs: allow filepage alongside swappage\n\ntmpfs has long allowed for a fresh filepage to be created in pagecache, just\nbefore shmem_getpage gets the chance to match it up with the swappage which\nalready belongs to that offset. But unionfs_writepage now does a\nfind_or_create_page, divorced from shmem_getpage, which leaves conflicting\nfilepage and swappage outstanding indefinitely, when unionfs is over tmpfs.\n\nTherefore shmem_writepage (where a page is swizzled from file to swap) must\nnow be on the lookout for existing swap, ready to free it in favour of the\nmore uptodate filepage, instead of BUGging on that clash. And when the\nadd_to_page_cache fails in shmem_unuse_inode, it must defer to an uptodate\nfilepage, otherwise swapoff would hang. Whereas when add_to_page_cache fails\nin shmem_getpage, it should retry in the same way it already does.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "73b1262fa43a778b1e154deea632cdef5009d6a1", "tree": "409f14e78e23cd999e8c3d1e0945f0fa9b67048f", "parents": [ "f000944d03a5b74ab3c92b2fcdf0e944cc898065" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Feb 04 22:28:50 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:15 2008 -0800" }, "message": "tmpfs: move swap swizzling into shmem\n\nmove_to_swap_cache and move_from_swap_cache functions (which swizzle a page\nbetween tmpfs page cache and swap cache, to avoid page copying) are only used\nby shmem.c; and our subsequent fix for unionfs needs different treatments in\nthe two instances of move_from_swap_cache. Move them from swap_state.c into\ntheir callsites shmem_writepage, shmem_unuse_inode and shmem_getpage, making\nadd_to_swap_cache externally visible.\n\nshmem.c likes to say set_page_dirty where swap_state.c liked to say\nSetPageDirty: respect that diversity, which __set_page_dirty_no_writeback\nmakes moot (and implies we should lose that \"shift page from clean_pages to\ndirty_pages list\" comment: it\u0027s on neither).\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "818db35992c249dc32c1d86daf7d533fb0952f5d", "tree": "8577fe7cff367eade84f632621b16054c362d39a", "parents": [ "5b04c6890f0dc7ea6c85b9adebc883c55c667d97" ], "author": { "name": "Michael Marineau", "email": "mike@marineau.org", "time": "Mon Feb 04 22:28:48 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:15 2008 -0800" }, "message": "tmpfs: fix mounts when size is less than the page size\n\nWhen tmpfs is mounted with a size less than one page, the number of blocks\nis set to 0 which makes the tmpfs mount unlimited. This can lead to a\nquick and surprising death if someone typos a tmpfs mount command and\nwrites too much.\n\ntmpfs can still be mounted as unlimited if size or nr_blocks is exactly 0,\nas Documentation/filesystems/tmpfs.txt says.\n\nHugh: do this by rounding size up instead of down in all cases: which\nslightly expands other odd-sized tmpfs mounts, but in a consistent way.\n\nSigned-off-by: Michael Marineau \u003cmike@marineau.org\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5b04c6890f0dc7ea6c85b9adebc883c55c667d97", "tree": "50f060de1edcd5cda14290f13bad0e74433b0a67", "parents": [ "2e441889c38fe1b6ef6b963e6993076aa120176c" ], "author": { "name": "Pavel Emelyanov", "email": "xemul@openvz.org", "time": "Mon Feb 04 22:28:47 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:15 2008 -0800" }, "message": "shmem: factor out sbi-\u003efree_inodes manipulations\n\nThe shmem_sb_info structure has a number of free_inodes. This\nvalue is altered in appropriate places under spinlock and with\nthe sbi-\u003emax_inodes !\u003d 0 check.\n\nConsolidate these manipulations into two helpers.\n\nThis is minus 42 bytes of shmem.o and minus 4 :) lines of code.\n\n[akpm@linux-foundation.org: fix error return values]\nSigned-off-by: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5402b976ae0be96b3a32f3508ab7308c380d6477", "tree": "d2c0900086033ea1fdeb3e1540e733d962cd177c", "parents": [ "d3602444e1e3485890eea5f61366e19a287c00c4" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Feb 04 22:28:44 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:15 2008 -0800" }, "message": "shmem_file_write is redundant\n\nWith the old aops, writing to a tmpfs file had to use its own special method:\nthe generic method would pass in a fresh page to prepare_write when the right\npage was there in swapcache - which was inefficient to handle, even once we\u0027d\nconcocted the code to handle it.\n\nWith the new aops, the generic method uses shmem_write_end, which lets\nshmem_getpage find the right page: so now abandon shmem_file_write in favour\nof the generic method. Yes, that does do several things that tmpfs hasn\u0027t\nreally needed (notably balance_dirty_pages_ratelimited, which ramfs also\ncalls); but more use of common code is preferable.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nAcked-by: Rik van Riel \u003criel@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": "d3602444e1e3485890eea5f61366e19a287c00c4", "tree": "f27cca0ce7c113c6b8f15f77abc3124faea9e2c8", "parents": [ "27d54b398ec0edea0e7417f003171017300e0efc" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Feb 04 22:28:44 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:15 2008 -0800" }, "message": "shmem_getpage return page locked\n\nIn the new aops, write_begin is supposed to return the page locked: though\nI\u0027ve seen no ill effects, that\u0027s been overlooked in the case of\nshmem_write_begin, and should be fixed. Then shmem_write_end must unlock the\npage: do so _after_ updating i_size, as we found to be important in other\nfilesystems (though since shmem pages don\u0027t go the usual writeback route, they\nnever suffered from that corruption).\n\nFor shmem_write_begin to return the page locked, we need shmem_getpage to\nreturn the page locked in SGP_WRITE case as well as SGP_CACHE case: let\u0027s\nsimplify the interface and return it locked even when SGP_READ.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.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": "27d54b398ec0edea0e7417f003171017300e0efc", "tree": "2167c058ab0734bbb424ec27b2dc19d58fa7befd", "parents": [ "02098feaa42b2e0087fbbe6c6ab9a23e4653b16a" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Feb 04 22:28:43 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:14 2008 -0800" }, "message": "shmem: SGP_QUICK and SGP_FAULT redundant\n\nRemove SGP_QUICK from the sgp_type enum: it was for shmem_populate and has no\nusers now. Remove SGP_FAULT from the enum: SGP_CACHE does just as well (and\nshmem_getpage is about to return with page always locked).\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Rik van Riel \u003criel@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": "02098feaa42b2e0087fbbe6c6ab9a23e4653b16a", "tree": "494eaf13f204c9384d4316202fd76cd1b5d960ad", "parents": [ "46017e954826ac59e91df76341a3f76b45467847" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Feb 04 22:28:42 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:14 2008 -0800" }, "message": "swapin needs gfp_mask for loop on tmpfs\n\nBuilding in a filesystem on a loop device on a tmpfs file can hang when\nswapping, the loop thread caught in that infamous throttle_vm_writeout.\n\nIn theory this is a long standing problem, which I\u0027ve either never seen in\npractice, or long ago suppressed the recollection, after discounting my load\nand my tmpfs size as unrealistically high. But now, with the new aops, it has\nbecome easy to hang on one machine.\n\nLoop used to grab_cache_page before the old prepare_write to tmpfs, which\nseems to have been enough to free up some memory for any swapin needed; but\nthe new write_begin lets tmpfs find or allocate the page (much nicer, since\ngrab_cache_page missed tmpfs pages in swapcache).\n\nWhen allocating a fresh page, tmpfs respects loop\u0027s mapping_gfp_mask, which\nhas __GFP_IO|__GFP_FS stripped off, and throttle_vm_writeout is designed to\nbreak out when __GFP_IO or GFP_FS is unset; but when tmfps swaps in,\nread_swap_cache_async allocates with GFP_HIGHUSER_MOVABLE regardless of the\nmapping_gfp_mask - hence the hang.\n\nSo, pass gfp_mask down the line from shmem_getpage to shmem_swapin to\nswapin_readahead to read_swap_cache_async to add_to_swap_cache.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "46017e954826ac59e91df76341a3f76b45467847", "tree": "711a35e3936118665d0eac2afeef8758b4f4e95f", "parents": [ "c4cc6d07b2f465fbf5efd99bbe772a49c515f3f2" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Feb 04 22:28:41 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:14 2008 -0800" }, "message": "swapin_readahead: move and rearrange args\n\nswapin_readahead has never sat well in mm/memory.c: move it to mm/swap_state.c\nbeside its kindred read_swap_cache_async. Why were its args in a different\norder? rearrange them. And since it was always followed by a\nread_swap_cache_async of the target page, fold that in and return struct\npage*. Then CONFIG_SWAP\u003dn no longer needs valid_swaphandles and\nread_swap_cache_async stubs.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Rik van Riel \u003criel@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": "c4cc6d07b2f465fbf5efd99bbe772a49c515f3f2", "tree": "0aec353fce4ee6cd16e3051ecfdf55e8022aaa5a", "parents": [ "75897d60a54ccee94253312107f941a83b5077cb" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Feb 04 22:28:40 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:14 2008 -0800" }, "message": "swapin_readahead: excise NUMA bogosity\n\nFor three years swapin_readahead has been cluttered with fanciful CONFIG_NUMA\ncode, advancing addr, and stepping on to the next vma at the boundary, to line\nup the mempolicy for each page allocation.\n\nIt _might_ be a good idea to allocate swap more according to vma layout; but\nthe fact is, that\u0027s not how we do it at all, 2.6 even less than 2.4: swap is\nallocated as needed for pages as they sink to the bottom of the inactive LRUs.\n Sometimes that may match vma layout, but not so often that it\u0027s worth going\nto these misleading vma-\u003evm_next lengths: rip all that out.\n\nOriginally I intended to retain the incrementation of addr, but correct its\ninitial value: valid_swaphandles generally supplies an offset below the target\naddr (this is readaround rather than readahead), but addr has not been\nadjusted accordingly, so in the interleave case it has usually been allocating\nthe target page from the \"wrong\" node (though that may not matter very much).\n\nBut look at the equivalent shmem_swapin code: either by oversight or by\ndesign, though it has all the apparatus for choosing a new mempolicy per page,\nit uses the same idx throughout, choosing the same mempolicy and interleave\nnode for each page of the cluster.\n\nWhich is actually a much better strategy: each node has its own LRUs and its\nown kswapd, so if you\u0027re betting on any particular relationship between swap\nand node, the best bet is that nearby swap entries belong to pages from the\nsame node - even when the mempolicy of the target page is to interleave. And\nexamining a map of nodes corresponding to swap entries on a numa\u003dfake system\nbears this out. (We could later tweak swap allocation to make it even more\nlikely, but this patch is merely about removing cruft.)\n\nSo, neither adjust nor increment addr in swapin_readahead, and then\nshmem_swapin can use it too; the pseudo-vma to pass policy need only be set up\nonce per cluster, and so few fields of pvma are used, let\u0027s skip the memset -\nfrom shmem_alloc_page also.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e84e2e132c9c66d8498e7710d4ea532d1feaaac5", "tree": "f754be23d6b37af04d203eb6e34ac7cdb5f84a4b", "parents": [ "9bfb52ad716e74785b2402b7ea17f30e0344b8e8" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Wed Nov 28 18:55:10 2007 +0000" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Nov 28 11:04:28 2007 -0800" }, "message": "tmpfs: restore missing clear_highpage\n\ntmpfs was misconverted to __GFP_ZERO in 2.6.11. There\u0027s an unusual case in\nwhich shmem_getpage receives the page from its caller instead of allocating.\nWe must cover this case by clear_highpage before SetPageUptodate, as before.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "487e9bf25cbae11b131d6a14bdbb3a6a77380837", "tree": "0b6666750274aadd22b29b1282aa779831976ca1", "parents": [ "8bca44bbd39007065cc6a4e3a50201475629a6cf" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Oct 29 14:37:20 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 30 08:06:55 2007 -0700" }, "message": "fix tmpfs BUG and AOP_WRITEPAGE_ACTIVATE\n\nIt\u0027s possible to provoke unionfs (not yet in mainline, though in mm and\nsome distros) to hit shmem_writepage\u0027s BUG_ON(page_mapped(page)). I expect\nit\u0027s possible to provoke the 2.6.23 ecryptfs in the same way (but the\n2.6.24 ecryptfs no longer calls lower level\u0027s -\u003ewritepage).\n\nThis came to light with the recent find that AOP_WRITEPAGE_ACTIVATE could\nleak from tmpfs via write_cache_pages and unionfs to userspace. There\u0027s\nalready a fix (e423003028183df54f039dfda8b58c49e78c89d7 - writeback: don\u0027t\npropagate AOP_WRITEPAGE_ACTIVATE) in the tree for that, and it\u0027s okay so\nfar as it goes; but insufficient because it doesn\u0027t address the underlying\nissue, that shmem_writepage expects to be called only by vmscan (relying on\nbacking_dev_info capabilities to prevent the normal writeback path from\never approaching it).\n\nThat\u0027s an increasingly fragile assumption, and ramdisk_writepage (the other\nsource of AOP_WRITEPAGE_ACTIVATEs) is already careful to check\nwbc-\u003efor_reclaim before returning it. Make the same check in\nshmem_writepage, thereby sidestepping the page_mapped BUG also.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Erez Zadok \u003cezk@cs.sunysb.edu\u003e\nCc: \u003cstable@kernel.org\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "39655164405940d4818224a085e35420e2f97aed", "tree": "6b019b3bc77eecac1731fe64e5c031790c2b5223", "parents": [ "cfaea787c05822acbb4d8963baee5edd1cc0258f" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Sun Oct 21 16:42:17 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Oct 22 08:13:21 2007 -0700" }, "message": "exportfs: make struct export_operations const\n\nNow that nfsd has stopped writing to the find_exported_dentry member we an\nmark the export_operations const\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Neil Brown \u003cneilb@suse.de\u003e\nCc: \"J. Bruce Fields\" \u003cbfields@fieldses.org\u003e\nCc: \u003clinux-ext4@vger.kernel.org\u003e\nCc: Dave Kleikamp \u003cshaggy@austin.ibm.com\u003e\nCc: Anton Altaparmakov \u003caia21@cantab.net\u003e\nCc: David Chinner \u003cdgc@sgi.com\u003e\nCc: Timothy Shimmin \u003ctes@sgi.com\u003e\nCc: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Chris Mason \u003cmason@suse.com\u003e\nCc: Jeff Mahoney \u003cjeffm@suse.com\u003e\nCc: \"Vladimir V. Saveliev\" \u003cvs@namesys.com\u003e\nCc: Steven Whitehouse \u003cswhiteho@redhat.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": "480b116c98344ca246f50aade6eb7aca98151a2f", "tree": "72ba3ba17f8c5a72fbd168d1a963b06e269ad898", "parents": [ "905251a02eeccc59f8e1d743679b8edadc5f738b" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Sun Oct 21 16:42:13 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Oct 22 08:13:20 2007 -0700" }, "message": "shmem: new export ops\n\nI\u0027m not sure what people were thinking when adding support to export tmpfs,\nbut here\u0027s the conversion anyway:\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Neil Brown \u003cneilb@suse.de\u003e\nCc: \"J. Bruce Fields\" \u003cbfields@fieldses.org\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": "ce8d2cdf3d2b73e346c82e6f0a46da331df6364c", "tree": "bf3597f2d4f57d6e30a7703d7fce0dbf8c757962", "parents": [ "348366b963e4e1462c8354827a9cb910aa865bf2" ], "author": { "name": "Dave Hansen", "email": "haveblue@us.ibm.com", "time": "Tue Oct 16 23:31:13 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:43:04 2007 -0700" }, "message": "r/o bind mounts: filesystem helpers for custom \u0027struct file\u0027s\n\nWhy do we need r/o bind mounts?\n\nThis feature allows a read-only view into a read-write filesystem. In the\nprocess of doing that, it also provides infrastructure for keeping track of\nthe number of writers to any given mount.\n\nThis has a number of uses. It allows chroots to have parts of filesystems\nwritable. It will be useful for containers in the future because users may\nhave root inside a container, but should not be allowed to write to\nsomefilesystems. This also replaces patches that vserver has had out of the\ntree for several years.\n\nIt allows security enhancement by making sure that parts of your filesystem\nread-only (such as when you don\u0027t trust your FTP server), when you don\u0027t want\nto have entire new filesystems mounted, or when you want atime selectively\nupdated. I\u0027ve been using the following script to test that the feature is\nworking as desired. It takes a directory and makes a regular bind and a r/o\nbind mount of it. It then performs some normal filesystem operations on the\nthree directories, including ones that are expected to fail, like creating a\nfile on the r/o mount.\n\nThis patch:\n\nSome filesystems forego the vfs and may_open() and create their own \u0027struct\nfile\u0027s.\n\nThis patch creates a couple of helper functions which can be used by these\nfilesystems, and will provide a unified place which the r/o bind mount code\nmay patch.\n\nAlso, rename an existing, static-scope init_file() to a less generic name.\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.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": "040b5c6f9503f2d6b35c335f8537bb3035d35547", "tree": "71f1693fbcaf9e2a953e66fdf13bbbc20510b60e", "parents": [ "c4f3b63fe15b4629aa1ec163c95ab30423d0f76a" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@sw.ru", "time": "Tue Oct 16 23:26:10 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:47 2007 -0700" }, "message": "SLAB_PANIC more (proc, posix-timers, shmem)\n\nThese aren\u0027t modular, so SLAB_PANIC is OK.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@sw.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4ba9b9d0ba0a49d91fa6417c7510ee36f48cf957", "tree": "191b4f45f926e44b882b1e87a9a85dc12230b892", "parents": [ "b811c202a0edadaac7242ab834fe7ba409978ae7" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 16 23:25:51 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:45 2007 -0700" }, "message": "Slab API: remove useless ctor parameter and reorder parameters\n\nSlab constructors currently have a flags parameter that is never used. And\nthe order of the arguments is opposite to other slab functions. The object\npointer is placed before the kmem_cache pointer.\n\nConvert\n\n ctor(void *object, struct kmem_cache *s, unsigned long flags)\n\nto\n\n ctor(struct kmem_cache *s, void *object)\n\nthroughout the kernel\n\n[akpm@linux-foundation.org: coupla fixes]\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": "e0bf68ddec4f4f90e5871404be4f1854c17f3120", "tree": "36203a3558cbe26d698bed18be69b3822fb5eef2", "parents": [ "dc62a30e274d003a4d08fb888f1520add4b21373" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Oct 16 23:25:46 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:45 2007 -0700" }, "message": "mm: bdi init hooks\n\nprovide BDI constructor/destructor hooks\n\n[akpm@linux-foundation.org: compile fix]\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d8dc74f212c38407fc9f4367181f8f969b719485", "tree": "2ff1ec0aaee1e6b3ee29d258a7158deb4b43688c", "parents": [ "af767cbdd78f293485c294113885d95e7f1da123" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue Oct 16 01:26:26 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:03 2007 -0700" }, "message": "mm/shmem.c: make 3 functions static\n\nThis patch makes three needlessly global functions static.\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e12ba74d8ff3e2f73a583500d7095e406df4d093", "tree": "a0d3385b65f0b3e1e00b0bbf11b75e7538a93edb", "parents": [ "c361be55b3128474aa66d31092db330b07539103" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 16 01:25:52 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:00 2007 -0700" }, "message": "Group short-lived and reclaimable kernel allocations\n\nThis patch marks a number of allocations that are either short-lived such as\nnetwork buffers or are reclaimable such as inode allocations. When something\nlike updatedb is called, long-lived and unmovable kernel allocations tend to\nbe spread throughout the address space which increases fragmentation.\n\nThis patch groups these allocations together as much as possible by adding a\nnew MIGRATE_TYPE. The MIGRATE_RECLAIMABLE type is for allocations that can be\nreclaimed on demand, but not moved. i.e. they can be migrated by deleting\nthem and re-reading the information from elsewhere.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "37b07e4163f7306aa735a6e250e8d22293e5b8de", "tree": "5c9c1935253a39aa840a9923bf1c86620cb6f733", "parents": [ "0e1e7c7a739562a321fda07c7cd2a97a7114f8f8" ], "author": { "name": "Lee Schermerhorn", "email": "Lee.Schermerhorn@hp.com", "time": "Tue Oct 16 01:25:39 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:59 2007 -0700" }, "message": "memoryless nodes: fixup uses of node_online_map in generic code\n\nHere\u0027s a cut at fixing up uses of the online node map in generic code.\n\nmm/shmem.c:shmem_parse_mpol()\n\n\tEnsure nodelist is subset of nodes with memory.\n\tUse node_states[N_HIGH_MEMORY] as default for missing\n\tnodelist for interleave policy.\n\nmm/shmem.c:shmem_fill_super()\n\n\tinitialize policy_nodes to node_states[N_HIGH_MEMORY]\n\nmm/page-writeback.c:highmem_dirtyable_memory()\n\n\tsum over nodes with memory\n\nmm/page_alloc.c:zlc_setup()\n\n\tallowednodes - use nodes with memory.\n\nmm/page_alloc.c:default_zonelist_order()\n\n\taverage over nodes with memory.\n\nmm/page_alloc.c:find_next_best_node()\n\n\tskip nodes w/o memory.\n\tN_HIGH_MEMORY state mask may not be initialized at this time,\n\tunless we want to depend on early_calculate_totalpages() [see\n\tbelow]. Will ZONE_MOVABLE ever be configurable?\n\nmm/page_alloc.c:find_zone_movable_pfns_for_nodes()\n\n\tspread kernelcore over nodes with memory.\n\n\tThis required calling early_calculate_totalpages()\n\tunconditionally, and populating N_HIGH_MEMORY node\n\tstate therein from nodes in the early_node_map[].\n\tIf we can depend on this, we can eliminate the\n\tpopulation of N_HIGH_MEMORY mask from __build_all_zonelists()\n\tand use the N_HIGH_MEMORY mask in find_next_best_node().\n\nmm/mempolicy.c:mpol_check_policy()\n\n\tEnsure nodes specified for policy are subset of\n\tnodes with memory.\n\n[akpm@linux-foundation.org: fix warnings]\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Shaohua Li \u003cshaohua.li@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "800d15a53e7d14fa26495b7b95d3bfe7877dd69d", "tree": "09a59e32043f1b601b73ad6105e7634679337884", "parents": [ "674b892ede247ef4fb8d00918f02e29c32b9bbaf" ], "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": "implement simple fs aops\n\nImplement new aops for some of the simpler filesystems.\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": "43fac94dd62667c83dd2daa5b7ac548512af780a", "tree": "68b8cf73959afd24410f3f398bda5953c7dcbadd", "parents": [ "39e91e433169bdfd5a312654e5988986662afd7f" ], "author": { "name": "Jesper Juhl", "email": "jesper.juhl@gmail.com", "time": "Tue Oct 16 01:24:30 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:52 2007 -0700" }, "message": "Clean up duplicate includes in mm/\n\nThis patch cleans up duplicate includes in\n\tmm/\n\nSigned-off-by: Jesper Juhl \u003cjesper.juhl@gmail.com\u003e\nAcked-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "20c2df83d25c6a95affe6157a4c9cac4cf5ffaac", "tree": "415c4453d2b17a50abe7a3e515177e1fa337bd67", "parents": [ "64fb98fc40738ae1a98bcea9ca3145b89fb71524" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Fri Jul 20 10:11:58 2007 +0900" }, "committer": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Fri Jul 20 10:11:58 2007 +0900" }, "message": "mm: Remove slab destructors from kmem_cache_create().\n\nSlab destructors were no longer supported after Christoph\u0027s\nc59def9f222d44bb7e2f0a559f2906191a0862d7 change. They\u0027ve been\nBUGs for both slab and slub, and slob never supported them\neither.\n\nThis rips out support for the dtor pointer from kmem_cache_create()\ncompletely and fixes up every single callsite in the kernel (there were\nabout 224, not including the slab allocator definitions themselves,\nor the documentation references).\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\n" }, { "commit": "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": "a569425512253992cc64ebf8b6d00a62f986db3e", "tree": "7ea72c75c54697bddbad807af89cc549d7426a69", "parents": [ "6dd4ac3b30b81b5bd0d628af1c89b7da689a38ea" ], "author": { "name": "Christoph Hellwig", "email": "hch@infradead.org", "time": "Tue Jul 17 04:04:28 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:06 2007 -0700" }, "message": "knfsd: exportfs: add exportfs.h header\n\ncurrently the export_operation structure and helpers related to it are in\nfs.h. fs.h is already far too large and there are very few places needing the\nexport bits, so split them off into a separate header.\n\n[akpm@linux-foundation.org: fix cifs build]\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nCc: Steven French \u003csfrench@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "769848c03895b63e5662eb7e4ec8c4866f7d0183", "tree": "8911c7c312c8b8b172795fa2874c8162e1d3d15a", "parents": [ "a32ea1e1f925399e0d81ca3f7394a44a6dafa12c" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Jul 17 04:03:05 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:22:59 2007 -0700" }, "message": "Add __GFP_MOVABLE for callers to flag allocations from high memory that may be migrated\n\nIt is often known at allocation time whether a page may be migrated or not.\nThis patch adds a flag called __GFP_MOVABLE and a new mask called\nGFP_HIGH_MOVABLE. Allocations using the __GFP_MOVABLE can be either migrated\nusing the page migration mechanism or reclaimed by syncing with backing\nstorage and discarding.\n\nAn API function very similar to alloc_zeroed_user_highpage() is added for\n__GFP_MOVABLE allocations called alloc_zeroed_user_highpage_movable(). The\nflags used by alloc_zeroed_user_highpage() are not changed because it would\nchange the semantics of an existing API. After this patch is applied there\nare no in-kernel users of alloc_zeroed_user_highpage() so it probably should\nbe marked deprecated if this patch is merged.\n\nNote that this patch includes a minor cleanup to the use of __GFP_ZERO in\nshmem.c to keep all flag modifications to inode-\u003emapping in the\nshmem_dir_alloc() helper function. This clean-up suggestion is courtesy of\nHugh Dickens.\n\nAdditional credit goes to Christoph Lameter and Linus Torvalds for shaping the\nconcept. Credit to Hugh Dickens for catching issues with shmem swap vector\nand ramfs allocations.\n\n[akpm@linux-foundation.org: build fix]\n[hugh@veritas.com: __GFP_ZERO cleanup]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ae976416464b741913a13eea62eb6953ee065733", "tree": "48ac14023b494c9f6522ad390f60e4decac41ac3", "parents": [ "1db60cf2056511c7c8cebcbaee308ef6c79b4728" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Jun 04 10:00:39 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jul 10 08:04:15 2007 +0200" }, "message": "shmem: convert to using splice instead of sendfile()\n\nRemove shmem_file_sendfile and resurrect shmem_readpage, as used by tmpfs\nto support loop and sendfile in 2.4 and 2.5. Now tmpfs can support splice,\nloop and sendfile in the simplest way, using generic_file_splice_read and\ngeneric_file_splice_write (with the aid of shmem_prepare_write).\n\nWe could make some efficiency tweaks later, if there\u0027s a real need;\nbut this is stable and works well as is.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "a210906c1b791af1434323f69427286039c9c8b9", "tree": "17f3deeda2c7c6972b9a72113a14571c2cabaae7", "parents": [ "9739ed1c8eafd554788d8e2ba09847b5718a34e7" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Fri Jun 08 13:46:46 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jun 08 17:23:32 2007 -0700" }, "message": "mount -t tmpfs -o mpol\u003d: check nodes online\n\nRandy Dunlap reports that a tmpfs, mounted with NUMA mpol\u003d specifying an\noffline node, crashes as soon as data is allocated upon it. Now restrict it\nto online nodes, where before it restricted to MAX_NUMNODES.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Robin Holt \u003cholt@sgi.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nTested-and-acked-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": "a35afb830f8d71ec211531aeb9a621b09a2efb39", "tree": "198280081e1f8b2f6c450742a5075cc7904a3d58", "parents": [ "5577bd8a85c8b7643a241789b14fafa9c8a6c7db" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed May 16 22:10:57 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu May 17 05:23:04 2007 -0700" }, "message": "Remove SLAB_CTOR_CONSTRUCTOR\n\nSLAB_CTOR_CONSTRUCTOR is always specified. No point in checking it.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nCc: Steven French \u003csfrench@us.ibm.com\u003e\nCc: Michael Halcrow \u003cmhalcrow@us.ibm.com\u003e\nCc: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nCc: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nCc: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: David Woodhouse \u003cdwmw2@infradead.org\u003e\nCc: Dave Kleikamp \u003cshaggy@austin.ibm.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nCc: \"J. Bruce Fields\" \u003cbfields@fieldses.org\u003e\nCc: Anton Altaparmakov \u003caia21@cantab.net\u003e\nCc: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Jan Kara \u003cjack@ucw.cz\u003e\nCc: David Chinner \u003cdgc@sgi.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "50953fe9e00ebbeffa032a565ab2f08312d51a87", "tree": "9f95f56f0b51600959a76cd88ce17f6e9c7a98a3", "parents": [ "4b1d89290b62bb2db476c94c82cf7442aab440c8" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun May 06 14:50:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:57 2007 -0700" }, "message": "slab allocators: Remove SLAB_DEBUG_INITIAL flag\n\nI have never seen a use of SLAB_DEBUG_INITIAL. It is only supported by\nSLAB.\n\nI think its purpose was to have a callback after an object has been freed\nto verify that the state is the constructor state again? The callback is\nperformed before each freeing of an object.\n\nI would think that it is much easier to check the object state manually\nbefore the free. That also places the check near the code object\nmanipulation of the object.\n\nAlso the SLAB_DEBUG_INITIAL callback is only performed if the kernel was\ncompiled with SLAB debugging on. If there would be code in a constructor\nhandling SLAB_DEBUG_INITIAL then it would have to be conditional on\nSLAB_DEBUG otherwise it would just be dead code. But there is no such code\nin the kernel. I think SLUB_DEBUG_INITIAL is too problematic to make real\nuse of, difficult to understand and there are easier ways to accomplish the\nsame effect (i.e. add debug code before kfree).\n\nThere is a related flag SLAB_CTOR_VERIFY that is frequently checked to be\nclear in fs inode caches. Remove the pointless checks (they would even be\npointless without removeal of SLAB_DEBUG_INITIAL) from the fs constructors.\n\nThis is the last slab flag that SLUB did not support. Remove the check for\nunimplemented flags from SLUB.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "16a100190d39592d1d56ff5a0b978b20288c3427", "tree": "63af0d78497e540f096262da83ed44ddbe1eab94", "parents": [ "1ae7000630e3c05b6f7e3dfc76472f1bca6c1788" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Thu Mar 29 01:20:37 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Mar 29 08:22:25 2007 -0700" }, "message": "[PATCH] holepunch: fix disconnected pages after second truncate\n\nshmem_truncate_range has its own truncate_inode_pages_range, to free any pages\nracily instantiated while it was in progress: a SHMEM_PAGEIN flag is set when\nthis might have happened. But holepunching gets no chance to clear that flag\nat the start of vmtruncate_range, so it\u0027s always set (unless a truncate came\njust before), so holepunch almost always does this second\ntruncate_inode_pages_range.\n\nshmem holepunch has unlikely swap\u003c-\u003efile races hereabouts whatever we do\n(without a fuller rework than is fit for this release): I was going to skip\nthe second truncate in the punch_hole case, but Miklos points out that would\nmake holepunch correctness more vulnerable to swapoff. So keep the second\ntruncate, but follow it by an unmap_mapping_range to eliminate the\ndisconnected pages (freed from pagecache while still mapped in userspace) that\nit might have left behind.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: 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": "1ae7000630e3c05b6f7e3dfc76472f1bca6c1788", "tree": "805d97820dae82a5141f0b1aefc1383bd794e956", "parents": [ "a2646d1e6c8d2239d8054a7d342eb9775a1d273a" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Thu Mar 29 01:20:36 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Mar 29 08:22:25 2007 -0700" }, "message": "[PATCH] holepunch: fix shmem_truncate_range punch locking\n\nMiklos Szeredi observes that during truncation of shmem page directories,\ninfo-\u003elock is released to improve latency (after lowering i_size and\nnext_index to exclude races); but this is quite wrong for holepunching, which\nreceives no such protection from i_size or next_index, and is left vulnerable\nto races with shmem_unuse, shmem_getpage and shmem_writepage.\n\nHold info-\u003elock throughout when holepunching? No, any user could prevent\nrescheduling for far too long. Instead take info-\u003elock just when needed: in\nshmem_free_swp when removing the swap entries, and whenever removing a\ndirectory page from the level above. But so long as we remove before\nscanning, we can safely skip taking the lock at the lower levels, except at\nmisaligned start and end of the hole.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a2646d1e6c8d2239d8054a7d342eb9775a1d273a", "tree": "dcb87e633ab7721fc6b94020ba3c8dd5213d6fac", "parents": [ "96fac9dc95b91fc198bfbf4ba90263b06eff023d" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Thu Mar 29 01:20:35 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Mar 29 08:22:25 2007 -0700" }, "message": "[PATCH] holepunch: fix shmem_truncate_range punching too far\n\nMiklos Szeredi observes BUG_ON(!entry) in shmem_writepage() triggered in rare\ncircumstances, because shmem_truncate_range() erroneously removes partially\ntruncated directory pages at the end of the range: later reclaim on pages\npointing to these removed directories triggers the BUG. Indeed, and it can\nalso cause data loss beyond the hole.\n\nFix this as in the patch proposed by Miklos, but distinguish between \"limit\"\n(how far we need to search: ignore truncation\u0027s next_index optimization in the\nholepunch case - if there are races it\u0027s more consistent to act on the whole\nrange specified) and \"upper_limit\" (how far we can free directory pages:\ngenerally we must be careful to keep partially punched pages, but can relax at\nend of file - i_size being held stable by i_mutex).\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Miklos Szeredi \u003cmszeredi@suse.cs\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "759b9775c25f5e69aaea8a75c3914019e2dc5539", "tree": "14382471e5a23741711443b323199776a94a8c2a", "parents": [ "cc2cccaec88d422e628e6b588078e1dbdc241896" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Mar 05 00:30:28 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Mar 05 07:57:51 2007 -0800" }, "message": "[PATCH] shmem and simple const super_operations\n\nshmem\u0027s super_operations were missed from the recent const-ification;\nand simple_fill_super()\u0027s, which can share with get_sb_pseudo()\u0027s.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Josef \u0027Jeff\u0027 Sipek \u003cjsipek@cs.sunysb.edu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9b83a6a8523a8a96b6353174b193c5c93e16c6c3", "tree": "33bfdc0e1794b3970b7454d746b20c177037765a", "parents": [ "de01bad2f5dec2977143aa242e7eba71d11a4363" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Wed Feb 28 20:11:03 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Mar 01 14:53:35 2007 -0800" }, "message": "[PATCH] mm/{,tiny-}shmem.c cleanups\n\nshmem_{nopage,mmap} are no longer used in ipc/shm.c\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "92e1d5be91a0e3ffa5c4697eeb09b2aa22792122", "tree": "4eb22a9f6c38e9f4cc2a5100cd6659b0af08b7ae", "parents": [ "754661f143e70d66eae6c48532ca245aa05dec0e" ], "author": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Mon Feb 12 00:55:39 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Feb 12 09:48:46 2007 -0800" }, "message": "[PATCH] mark struct inode_operations const 2\n\nMany struct inode_operations in the kernel can be \"const\". Marking them const\nmoves these to the .rodata section, which avoids false sharing with potential\ndirty data. In addition it\u0027ll catch accidental writes at compile time to\nthese shared resources.\n\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "767193253bbac889e176f90b6f17b7015f986551", "tree": "a81c5c90d14c7892e6d7adb0432f4dff4ca3f906", "parents": [ "bd8029b66069d29fd02c304599411ca9bb7fa38c" ], "author": { "name": "Ken Chen", "email": "kenchen@google.com", "time": "Sat Feb 10 01:43:15 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:19 2007 -0800" }, "message": "[PATCH] simplify shmem_aops.set_page_dirty() method\n\nshmem backed file does not have page writeback, nor it participates in\nbacking device\u0027s dirty or writeback accounting. So using generic\n__set_page_dirty_nobuffers() for its .set_page_dirty aops method is a bit\noverkill. It unnecessarily prolongs shm unmap latency.\n\nFor example, on a densely populated large shm segment (sevearl GBs), the\nunmapping operation becomes painfully long. Because at unmap, kernel\ntransfers dirty bit in PTE into page struct and to the radix tree tag. The\noperation of tagging the radix tree is particularly expensive because it\nhas to traverse the tree from the root to the leaf node on every dirty\npage. What\u0027s bothering is that radix tree tag is used for page write back.\n However, shmem is memory backed and there is no page write back for such\nfile system. And in the end, we spend all that time tagging radix tree and\nnone of that fancy tagging will be used. So let\u0027s simplify it by introduce\na new aops __set_page_dirty_no_writeback and this will speed up shm unmap.\n\nSigned-off-by: Ken Chen \u003ckenchen@google.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "92a3d03aab912624cae799e5772a6eb2ef55083f", "tree": "6bd85729918e1c56044ad5a1d084838444ab428e", "parents": [ "ba0084048ab785c2cb1d6cc2cccabe642a5b799a" ], "author": { "name": "Badari Pulavarty", "email": "pbadari@us.ibm.com", "time": "Fri Dec 22 01:06:23 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Dec 22 08:55:47 2006 -0800" }, "message": "[PATCH] Fix for shmem_truncate_range() BUG_ON()\n\nRan into BUG() while doing madvise(REMOVE) testing. If we are punching a\nhole into shared memory segment using madvise(REMOVE) and the entire hole\nis below the indirect blocks, we hit following assert.\n\n\t BUG_ON(limit \u003c\u003d SHMEM_NR_DIRECT);\n\nSigned-off-by: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.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": "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": "15ad7cdcfd76450d4beebc789ec646664238184d", "tree": "279d05a76ae0906c23ee2de8c5684d95d9886ad3", "parents": [ "4a08a9f68168e547c2baf100020e9b96cae5fbd1" ], "author": { "name": "Helge Deller", "email": "deller@gmx.de", "time": "Wed Dec 06 20:40:36 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:46 2006 -0800" }, "message": "[PATCH] struct seq_operations and struct file_operations constification\n\n - move some file_operations structs into the .rodata section\n\n - move static strings from policy_types[] array into the .rodata section\n\n - fix generic seq_operations usages, so that those structs may be defined\n as \"const\" as well\n\n[akpm@osdl.org: couple of fixes]\nSigned-off-by: Helge Deller \u003cdeller@gmx.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "1f370a23f2a3101886953add4bd7f529e3bba016", "tree": "589f22c4a5117d756855af3f0530d747ac17185d", "parents": [ "fed806f4072badad614699e1d40202e0ffef5c63" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Wed Dec 06 20:38:21 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:39 2006 -0800" }, "message": "[PATCH] make mm/shmem.c:shmem_xattr_security_handler static\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e94b1766097d53e6f3ccfb36c8baa562ffeda3fc", "tree": "93fa0a8ab84976d4e89c50768ca8b8878d642a0d", "parents": [ "54e6ecb23951b195d02433a741c7f7cb0b796c78" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Dec 06 20:33:17 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:24 2006 -0800" }, "message": "[PATCH] slab: remove SLAB_KERNEL\n\nSLAB_KERNEL is an alias of GFP_KERNEL.\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": "3fcfab16c5b86eaa3db3a9a31adba550c5b67141", "tree": "bd348fa081b8fbec2c79fbf8f173a306d70b2b2c", "parents": [ "79e2de4bc53d7ca2a8eedee49e4a92479b4b530e" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Thu Oct 19 23:28:16 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Oct 20 10:26:35 2006 -0700" }, "message": "[PATCH] separate bdi congestion functions from queue congestion functions\n\nSeparate out the concept of \"queue congestion\" from \"backing-dev congestion\".\nCongestion is a backing-dev concept, not a queue concept.\n\nThe blk_* congestion functions are retained, as wrappers around the core\nbacking-dev congestion functions.\n\nThis proper layering is needed so that NFS can cleanly use the congestion\nfunctions, and so that CONFIG_BLOCK\u003dn actually links.\n\nCc: \"Thomas Maier\" \u003cbalagi@justmail.de\u003e\nCc: \"Jens Axboe\" \u003cjens.axboe@oracle.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Peter Osterlund \u003cpetero2@telia.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "91828a405ae454a9503c41a7744f6ff877a80714", "tree": "aa1f051da60f320675a970ad304a9987ca1d7ce3", "parents": [ "5c496374a72320279ddb86291ef709e090a5d531" ], "author": { "name": "David M. Grimes", "email": "dgrimes@navisite.com", "time": "Tue Oct 17 00:09:45 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Oct 17 08:18:43 2006 -0700" }, "message": "[PATCH] knfsd: add nfs-export support to tmpfs\n\nWe need to encode a decode the \u0027file\u0027 part of a handle. We simply use the\ninode number and generation number to construct the filehandle.\n\nThe generation number is the time when the file was created. As inode numbers\ncycle through the full 32 bits before being reused, there is no real chance of\nthe same inum being allocated to different files in the same second so this is\nsuitably unique. Using time-of-day rather than e.g. jiffies makes it less\nlikely that the same filehandle can be created after a reboot.\n\nIn order to be able to decode a filehandle we need to be able to lookup by\ninum, which means that the inode needs to be added to the inode hash table\n(tmpfs doesn\u0027t currently hash inodes as there is never a need to lookup by\ninum). To avoid overhead when not exporting, we only hash an inode when it is\nfirst exported. This requires a lock to ensure it isn\u0027t hashed twice.\n\nThis code is separate from the patch posted in June06 from Atal Shargorodsky\nwhich provided the same functionality, but does borrow slightly from it.\n\nLocking comment: Most filesystems that hash their inodes do so at the point\nwhere the \u0027struct inode\u0027 is initialised, and that has suitable locking\n(I_NEW). Here in shmem, we are hashing the inode later, the first time we\nneed an NFS file handle for it. We no longer have I_NEW to ensure only one\nthread tries to add it to the hash table.\n\nCc: Atal Shargorodsky \u003catal@codefidence.com\u003e\nCc: Gilad Ben-Yossef \u003cgilad@codefidence.com\u003e\nSigned-off-by: David M. Grimes \u003cdgrimes@navisite.com\u003e\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nAcked-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "d8c76e6f45c111c32a4b3e50a2adc9210737b0d8", "tree": "25521b59d48c6d8c9aec1af54dbe5008ad4b215b", "parents": [ "9a53c3a783c2fa9b969628e65695c11c3e51e673" ], "author": { "name": "Dave Hansen", "email": "haveblue@us.ibm.com", "time": "Sat Sep 30 23:29:04 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Oct 01 00:39:30 2006 -0700" }, "message": "[PATCH] r/o bind mount prepwork: inc_nlink() helper\n\nThis is mostly included for parity with dec_nlink(), where we will have some\nmore hooks. This one should stay pretty darn straightforward for now.\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nAcked-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9a53c3a783c2fa9b969628e65695c11c3e51e673", "tree": "5a6115e18ee105246d46e3db3d5b07749d232f5b", "parents": [ "aab520e2f6c80160cabd187a8d0292d1cec8ff68" ], "author": { "name": "Dave Hansen", "email": "haveblue@us.ibm.com", "time": "Sat Sep 30 23:29:03 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Oct 01 00:39:30 2006 -0700" }, "message": "[PATCH] r/o bind mounts: unlink: monitor i_nlink\n\nWhen a filesystem decrements i_nlink to zero, it means that a write must be\nperformed in order to drop the inode from the filesystem.\n\nWe\u0027re shortly going to have keep filesystems from being remounted r/o between\nthe time that this i_nlink decrement and that write occurs.\n\nSo, add a little helper function to do the decrements. We\u0027ll tie into it in a\nbit to note when i_nlink hits zero.\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nAcked-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "39f0247d3823e4e0bf8f6838a10362864b1e1053", "tree": "f5808b2bb5fd719c42c7068e2dc43a4b8f402304", "parents": [ "f0c8bd164e1a0585d7e46896553136b4f488bd19" ], "author": { "name": "Andreas Gruenbacher", "email": "agruen@suse.de", "time": "Fri Sep 29 02:01:35 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Sep 29 09:18:24 2006 -0700" }, "message": "[PATCH] Access Control Lists for tmpfs\n\nAdd access control lists for tmpfs.\n\nSigned-off-by: Andreas Gruenbacher \u003cagruen@suse.de\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ba52de123d454b57369f291348266d86f4b35070", "tree": "3973f3f3c853b5857b6b64a027cadd4fe954e3b9", "parents": [ "577c4eb09d1034d0739e3135fd2cff50588024be" ], "author": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Wed Sep 27 01:50:49 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:18 2006 -0700" }, "message": "[PATCH] inode-diet: Eliminate i_blksize from the inode structure\n\nThis eliminates the i_blksize field from struct inode. Filesystems that want\nto provide a per-inode st_blksize can do so by providing their own getattr\nroutine instead of using the generic_fillattr() function.\n\nNote that some filesystems were providing pretty much random (and incorrect)\nvalues for i_blksize.\n\n[bunk@stusta.de: cleanup]\n[akpm@osdl.org: generic_fillattr() fix]\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "1a1d92c10dd24bbdc28b3d6e2d03ec199dd3a65b", "tree": "fade83955f75e718e39153d6f81d221403338bed", "parents": [ "f52720ca5f48574e347dff35ffe6b389ace61537" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Wed Sep 27 01:49:40 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:10 2006 -0700" }, "message": "[PATCH] Really ignore kmem_cache_destroy return value\n\n* Rougly half of callers already do it by not checking return value\n* Code in drivers/acpi/osl.c does the following to be sure:\n\n\t(void)kmem_cache_destroy(cache);\n\n* Those who check it printk something, however, slab_error already printed\n the name of failed cache.\n* XFS BUGs on failed kmem_cache_destroy which is not the decision\n low-level filesystem driver should make. Converted to ignore.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c1f60a5a419cc60aff27daffb150f5a3a3a79ef4", "tree": "8ae176462d6f220cd744ae6c3454113eebda02a8", "parents": [ "182e8e237349e7b6354f45aee4780b6423fd6a50" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:11 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:46 2006 -0700" }, "message": "[PATCH] reduce MAX_NR_ZONES: move HIGHMEM counters into highmem.c/.h\n\nMove totalhigh_pages and nr_free_highpages() into highmem.c/.h\n\nMove the totalhigh_pages definition into highmem.c/.h. Move the\nnr_free_highpages function into highmem.c\n\n[yoichi_yuasa@tripeaks.co.jp: build fix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Yoichi Yuasa \u003cyoichi_yuasa@tripeaks.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "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": "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": "602cada851b28c5792339786efe872fbdc1f5d41", "tree": "233d474b74d6038b5bb54a07ad91dd1bb10b0218", "parents": [ "82991c6f2c361acc17279b8124d9bf1878973435", "fee68d1cc0d9bd863e51c16cdcd707737b16bb38" ], "author": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Thu Jun 29 14:19:21 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Thu Jun 29 14:19:21 2006 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6: (22 commits)\n [PATCH] devfs: Remove it from the feature_removal.txt file\n [PATCH] devfs: Last little devfs cleanups throughout the kernel tree.\n [PATCH] devfs: Rename TTY_DRIVER_NO_DEVFS to TTY_DRIVER_DYNAMIC_DEV\n [PATCH] devfs: Remove the tty_driver devfs_name field as it\u0027s no longer needed\n [PATCH] devfs: Remove the line_driver devfs_name field as it\u0027s no longer needed\n [PATCH] devfs: Remove the videodevice devfs_name field as it\u0027s no longer needed\n [PATCH] devfs: Remove the gendisk devfs_name field as it\u0027s no longer needed\n [PATCH] devfs: Remove the miscdevice devfs_name field as it\u0027s no longer needed\n [PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree\n [PATCH] devfs: Remove devfs_remove() function from the kernel tree\n [PATCH] devfs: Remove devfs_mk_cdev() function from the kernel tree\n [PATCH] devfs: Remove devfs_mk_bdev() function from the kernel tree\n [PATCH] devfs: Remove devfs_mk_symlink() function from the kernel tree\n [PATCH] devfs: Remove devfs_mk_dir() function from the kernel tree\n [PATCH] devfs: Remove devfs_*_tape() functions from the kernel tree\n [PATCH] devfs: Remove devfs support from the sound subsystem\n [PATCH] devfs: Remove devfs support from the ide subsystem.\n [PATCH] devfs: Remove devfs support from the serial subsystem\n [PATCH] devfs: Remove devfs from the init code\n [PATCH] devfs: Remove devfs from the partition code\n ...\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": "ff23eca3e8f613034e0d20ff86f6a89b62f5a14e", "tree": "826285f5daa660001d38cac6baaf34411fd40131", "parents": [ "8ab5e4c15b53e147c08031a959d9f776823dbe73" ], "author": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Mon Jun 20 21:15:16 2005 -0700" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Mon Jun 26 12:25:08 2006 -0700" }, "message": "[PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree\n\nAlso fixes up all files that #include it.\n\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n" }, { "commit": "95dc112a5770dc670a1b45a3d9ee346fdd2b2697", "tree": "899cd99bdc928ade94ddc7b003b0de7d275cac48", "parents": [ "0e6c62da7cd929b0389fc4a7e41464bb738647dc" ], "author": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Mon Jun 20 21:15:16 2005 -0700" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Mon Jun 26 12:25:06 2006 -0700" }, "message": "[PATCH] devfs: Remove devfs_mk_dir() function from the kernel tree\n\nRemoves the devfs_mk_dir() function and all callers of it.\n\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n" }, { "commit": "816724e65c72a90a44fbad0ef0b59b186c85fa90", "tree": "421fa29aedff988e392f92780637553e275d37a0", "parents": [ "70ac4385a13f78bc478f26d317511893741b05bd", "d384ea691fe4ea8c2dd5b9b8d9042eb181776f18" ], "author": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Sat Jun 24 08:41:41 2006 -0400" }, "committer": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Sat Jun 24 13:07:53 2006 -0400" }, "message": "Merge branch \u0027master\u0027 of /home/trondmy/kernel/linux-2.6/\n\nConflicts:\n\n\tfs/nfs/inode.c\n\tfs/super.c\n\nFix conflicts between patch \u0027NFS: Split fs/nfs/inode.c\u0027 and patch\n\u0027VFS: Permit filesystem to override root dentry on mount\u0027\n" }, { "commit": "3c5a87f476bed45616e7e543dcaea4440c77bf93", "tree": "0ff4c86ef594f7bfad9937095b69aab5e70b4174", "parents": [ "4776874ff096cd410382c0eca5d75f69c9dfa58f" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 23 02:03:08 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:46 2006 -0700" }, "message": "[PATCH] migration: remove unnecessary PageSwapCache checks\n\nRemove two unnecessary PageSwapCache checks. The page refcount is raised\nand therefore page migration cannot occur in both functions.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "726c334223180e3c0197cc980a432681370d4baf", "tree": "8327b354bb3dc959a6606051ae6f8d4d035e38a2", "parents": [ "454e2398be9b9fa30433fccc548db34d19aa9958" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Jun 23 02:02:58 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:45 2006 -0700" }, "message": "[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry\n\nGive the statfs superblock operation a dentry pointer rather than a superblock\npointer.\n\nThis complements the get_sb() patch. That reduced the significance of\nsb-\u003es_root, allowing NFS to place a fake root there. However, NFS does\nrequire a dentry to use as a target for the statfs operation. This permits\nthe root in the vfsmount to be used instead.\n\nlinux/mount.h has been added where necessary to make allyesconfig build\nsuccessfully.\n\nInterest has also been expressed for use with the FUSE and XFS filesystems.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Nathan Scott \u003cnathans@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "454e2398be9b9fa30433fccc548db34d19aa9958", "tree": "1f61cb0c3716a33b661cfc8977e9beeb480a322c", "parents": [ "1ad5544098a69d7dc1fa508cbb17e13a7a952fd8" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Jun 23 02:02:57 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:45 2006 -0700" }, "message": "[PATCH] VFS: Permit filesystem to override root dentry on mount\n\nExtend the get_sb() filesystem operation to take an extra argument that\npermits the VFS to pass in the target vfsmount that defines the mountpoint.\n\nThe filesystem is then required to manually set the superblock and root dentry\npointers. For most filesystems, this should be done with simple_set_mnt()\nwhich will set the superblock pointer and then set the root dentry to the\nsuperblock\u0027s s_root (as per the old default behaviour).\n\nThe get_sb() op now returns an integer as there\u0027s now no need to return the\nsuperblock pointer.\n\nThis patch permits a superblock to be implicitly shared amongst several mount\npoints, such as can be done with NFS to avoid potential inode aliasing. In\nsuch a case, simple_set_mnt() would not be called, and instead the mnt_root\nand mnt_sb would be set directly.\n\nThe patch also makes the following changes:\n\n (*) the get_sb_*() convenience functions in the core kernel now take a vfsmount\n pointer argument and return an integer, so most filesystems have to change\n very little.\n\n (*) If one of the convenience function is not used, then get_sb() should\n normally call simple_set_mnt() to instantiate the vfsmount. This will\n always return 0, and so can be tail-called from get_sb().\n\n (*) generic_shutdown_super() now calls shrink_dcache_sb() to clean up the\n dcache upon superblock destruction rather than shrink_dcache_anon().\n\n This is required because the superblock may now have multiple trees that\n aren\u0027t actually bound to s_root, but that still need to be cleaned up. The\n currently called functions assume that the whole tree is rooted at s_root,\n and that anonymous dentries are not the roots of trees which results in\n dentries being left unculled.\n\n However, with the way NFS superblock sharing are currently set to be\n implemented, these assumptions are violated: the root of the filesystem is\n simply a dummy dentry and inode (the real inode for \u0027/\u0027 may well be\n inaccessible), and all the vfsmounts are rooted on anonymous[*] dentries\n with child trees.\n\n [*] Anonymous until discovered from another tree.\n\n (*) The documentation has been adjusted, including the additional bit of\n changing ext2_* into foo_* in the documentation.\n\n[akpm@osdl.org: convert ipath_fs, do other stuff]\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Nathan Scott \u003cnathans@sgi.com\u003e\nCc: Roland Dreier \u003crolandd@cisco.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "d59bf96cdde5b874a57bfd1425faa45da915d0b7", "tree": "351a40b72514d620e5bebea2de38c26f23277ffc", "parents": [ "28df955a2ad484d602314b30183ea8496a9aa34a", "25f42b6af09e34c3f92107b36b5aa6edc2fdba2f" ], "author": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Tue Jun 20 08:59:45 2006 -0400" }, "committer": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Tue Jun 20 08:59:45 2006 -0400" }, "message": "Merge branch \u0027master\u0027 of /home/trondmy/kernel/linux-2.6/\n" }, { "commit": "86bc843a268058df558844b6bf64531617fbc698", "tree": "159a320d16495b1328aa6c7822ebbb79c5375da7", "parents": [ "cfd95a9cf58cd9e92d4c23b5ee20b07a3d121477" ], "author": { "name": "Sergey Vlasov", "email": "vsu@altlinux.ru", "time": "Mon Jun 12 21:53:23 2006 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jun 12 14:29:04 2006 -0700" }, "message": "[PATCH] tmpfs: Decrement i_nlink correctly in shmem_rmdir()\n\nshmem_rmdir() must undo the increment of i_nlink done in\nshmem_get_inode() for directories, otherwise at least\nIN_DELETE_SELF inotify event generation is broken.\n\nSigned-off-by: Sergey Vlasov \u003cvsu@altlinux.ru\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "cfd95a9cf58cd9e92d4c23b5ee20b07a3d121477", "tree": "446977d54fcf1f9e3a5c3c2f6aea1f1b1ac2f806", "parents": [ "5f856e8bdcf5936c9c13cb251dae770e6eeb06b6" ], "author": { "name": "Robin H. Johnson", "email": "robbat2@gentoo.org", "time": "Mon Jun 12 21:50:25 2006 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jun 12 13:55:52 2006 -0700" }, "message": "[PATCH] tmpfs: time granularity fix for [acm]time going backwards\n\nI noticed a strange behavior in a tmpfs file system the other day, while\nbuilding packages - occasionally, and seemingly at random, make decided to\nrebuild a target. However, only on tmpfs.\n\nA file would be created, and if checked, it had a sub-second timestamp.\nHowever, after an utimes related call where sub-seconds should be set, they\nwere zeroed instead. In the case that a file was created, and utimes(...,NULL)\nwas used on it in the same second, the timestamp on the file moved backwards.\n\nAfter some digging, I found that this was being caused by tmpfs not having a\ntime granularity set, thus inheriting the default 1 second granularity.\n\nHugh adds: yes, we missed tmpfs when the s_time_gran mods went into 2.6.11.\nUnfortunately, the granularity of CURRENT_TIME, often used in filesystems,\ndoes not match the default granularity set by alloc_super. A few more such\ndiscrepancies have been found, but this is the most important to fix now.\n\nSigned-off-by: Robin H. Johnson \u003crobbat2@gentoo.org\u003e\nAcked-by: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "1f5ce9e93aa96a867f195ed45f6f77935175f12e", "tree": "caa9b6635990f69d47c1729524bd127e968b23f5", "parents": [ "bb4a58bf46473e3e83d84054bbc110db3a0f85e4" ], "author": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Fri Jun 09 09:34:16 2006 -0400" }, "committer": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Fri Jun 09 09:34:16 2006 -0400" }, "message": "VFS: Unexport do_kern_mount() and clean up simple_pin_fs()\n\nReplace all module uses with the new vfs_kern_mount() interface, and fix up\nsimple_pin_fs().\n\nSigned-off-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\n" }, { "commit": "304dbdb7a4fbb7f40a6ad5c5836fdd456c233c63", "tree": "2bdd71bb0ab19422362e9d3999f975ae27206965", "parents": [ "3b5fd59fdd2e656dd4d10f2cedb41a7519b131b2" ], "author": { "name": "Lee Schermerhorn", "email": "Lee.Schermerhorn@hp.com", "time": "Sat Apr 22 02:35:48 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Apr 22 09:19:52 2006 -0700" }, "message": "[PATCH] add migratepage address space op to shmem\n\nBasic problem: pages of a shared memory segment can only be migrated once.\n\nIn 2.6.16 through 2.6.17-rc1, shared memory mappings do not have a\nmigratepage address space op. Therefore, migrate_pages() falls back to\ndefault processing. In this path, it will try to pageout() dirty pages.\nOnce a shared memory page has been migrated it becomes dirty, so\nmigrate_pages() will try to page it out. However, because the page count\nis 3 [cache + current + pte], pageout() will return PAGE_KEEP because\nis_page_cache_freeable() returns false. This will abort all subsequent\nmigrations.\n\nThis patch adds a migratepage address space op to shared memory segments to\navoid taking the default path. We use the \"migrate_page()\" function\nbecause it knows how to migrate dirty pages. This allows shared memory\nsegment pages to migrate, subject to other conditions such as # pte\u0027s\nreferencing the page [page_mapcount(page)], when requested.\n\nI think this is safe. If we\u0027re migrating a shared memory page, then we\nfound the page via a page table, so it must be in memory.\n\nCan be verified with memtoy and the shmem-mbind-test script, both\navailable at: http://free.linux.hp.com/~lts/Tools/\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nAcked-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": "d15c023b44e5d323f1f4130b85d29f08e43433b1", "tree": "f7153643b876b25f66e6e33ab2bbc670ba05a7f7", "parents": [ "6e5ef1a96e6e3b123da56292bc35017c8c401491" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Wed Mar 22 00:08:46 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Mar 22 07:54:02 2006 -0800" }, "message": "[PATCH] shmem: inline to avoid warning\n\nshmem.c was named and shamed in Jesper\u0027s \"Building 100 kernels\" warnings:\nshmem_parse_mpol is only used when CONFIG_TMPFS parses mount options; and\nonly called from that one site, so mark it inline like its non-NUMA stub.\n\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" } ], "next": "fcc234f888ba2365c44ba0507eb8a18eebf1f594" }