)]}' { "log": [ { "commit": "c23f72cae9523d29ff94eec8f30ccbdaf234b20e", "tree": "1e5f46971510cd36a3deebfa8f160933212f4df0", "parents": [ "031f2dcd7075e218e74dd7f942ad015cf82dffab" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jan 14 21:21:29 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jan 14 21:21:29 2008 -0800" }, "message": "Revert \"writeback: introduce writeback_control.more_io to indicate more io\"\n\nThis reverts commit 2e6883bdf49abd0e7f0d9b6297fc3be7ebb2250b, as\nrequested by Fengguang Wu. It\u0027s not quite fully baked yet, and while\nthere are patches around to fix the problems it caused, they should get\nmore testing. Says Fengguang: \"I\u0027ll resend them both for -mm later on,\nin a more complete patchset\".\n\nSee\n\n\thttp://bugzilla.kernel.org/show_bug.cgi?id\u003d9738\n\nfor some of this discussion.\n\nRequested-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8c0863403f109a43d7000b4646da4818220d501f", "tree": "925a87846bda5a0f427cbd19b65c9ea0375ebdd3", "parents": [ "adea27f4ba29200c989194a3f6214b652d009e83" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Nov 15 16:41:52 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Nov 15 16:41:52 2007 -0800" }, "message": "dirty page balancing: Get rid of broken unmapped_ratio logic\n\nThis code harks back to the days when we didn\u0027t count dirty mapped\npages, which led us to try to balance the number of dirty unmapped pages\nby how much unmapped memory there was in the system.\n\nThat makes no sense any more, since now the dirty counts include the\nmapped pages. Not to mention that the math doesn\u0027t work with HIGHMEM\nmachines anyway, and causes the unmapped_ratio to potentially turn\nnegative (which we do catch thanks to clamping it at a minimum value,\nbut I mention that as an indication of how broken the code is).\n\nThe code also was written at a time when the default dirty ratio was\nmuch larger, and the unmapped_ratio logic effectively capped that large\ndirty ratio a bit. Again, we\u0027ve since lowered the dirty ratio rather\naggressively, further lessening the point of that code.\n\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5fce25a9df4865bdd5e3dc4853b269dc1677a02a", "tree": "207fe2bf726bac89e402eb738b9548cfc7cae2f5", "parents": [ "546040dc4872f807d40b69bed86605636082564c" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Wed Nov 14 16:59:15 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Nov 14 18:45:38 2007 -0800" }, "message": "mm: speed up writeback ramp-up on clean systems\n\nWe allow violation of bdi limits if there is a lot of room on the system.\nOnce we hit half the total limit we start enforcing bdi limits and bdi\nramp-up should happen. Doing it this way avoids many small writeouts on an\notherwise idle system and should also speed up the ramp-up.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nReviewed-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "183ff22bb6bd8188c904ebfb479656ae52230b72", "tree": "425207fc9cdca03df64ee8241ba764c75db4d8d1", "parents": [ "676b1855de0a18100b3c340084eb8ef72bde4fb1" ], "author": { "name": "Simon Arlott", "email": "simon@fire.lp0.eux", "time": "Sat Oct 20 01:27:18 2007 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Sat Oct 20 01:27:18 2007 +0200" }, "message": "spelling fixes: mm/\n\nSpelling fixes in mm/.\n\nSigned-off-by: Simon Arlott \u003csimon@fire.lp0.eu\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\n" }, { "commit": "369f2389e7d03022abdd25e298bffb9613cd0e54", "tree": "1071020428c8e3eaa88642682e234de95e7a77bc", "parents": [ "1c0eeaf5698597146ed9b873e2f9e0961edcf0f9" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 23:30:45 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:43:02 2007 -0700" }, "message": "writeback: remove unnecessary wait in throttle_vm_writeout()\n\nWe don\u0027t want to introduce pointless delays in throttle_vm_writeout() when\nthe writeback limits are not yet exceeded, do we?\n\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nCc: Kumar Gala \u003cgalak@kernel.crashing.org\u003e\nCc: Pete Zaitcev \u003czaitcev@redhat.com\u003e\nCc: Greg KH \u003cgreg@kroah.com\u003e\nReviewed-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1c0eeaf5698597146ed9b873e2f9e0961edcf0f9", "tree": "5265eac8437e8ce517a62db8fe2bd99db5b7019b", "parents": [ "2e6883bdf49abd0e7f0d9b6297fc3be7ebb2250b" ], "author": { "name": "Joern Engel", "email": "joern@wohnheim.fh-wedel.de", "time": "Tue Oct 16 23:30:44 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:43:02 2007 -0700" }, "message": "introduce I_SYNC\n\nI_LOCK was used for several unrelated purposes, which caused deadlock\nsituations in certain filesystems as a side effect. One of the purposes\nnow uses the new I_SYNC bit.\n\nAlso document the various bits and change their order from historical to\nlogical.\n\n[bunk@stusta.de: make fs/inode.c:wake_up_inode() static]\nSigned-off-by: Joern Engel \u003cjoern@wohnheim.fh-wedel.de\u003e\nCc: Dave Kleikamp \u003cshaggy@linux.vnet.ibm.com\u003e\nCc: David Chinner \u003cdgc@sgi.com\u003e\nCc: Anton Altaparmakov \u003caia21@cam.ac.uk\u003e\nCc: Al Viro \u003cviro@ftp.linux.org.uk\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2e6883bdf49abd0e7f0d9b6297fc3be7ebb2250b", "tree": "aec0418150413c7e9f43fb2ec68bfd24738b0623", "parents": [ "1f7decf6d9f06dac008b8d66935c0c3b18e564f9" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 23:30:43 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:43:02 2007 -0700" }, "message": "writeback: introduce writeback_control.more_io to indicate more io\n\nAfter making dirty a 100M file, the normal behavior is to start the writeback\nfor all data after 30s delays. But sometimes the following happens instead:\n\n\t- after 30s: ~4M\n\t- after 5s: ~4M\n\t- after 5s: all remaining 92M\n\nSome analyze shows that the internal io dispatch queues goes like this:\n\n\t\ts_io s_more_io\n\t\t-------------------------\n\t1)\t100M,1K 0\n\t2)\t1K 96M\n\t3)\t0 96M\n\n1) initial state with a 100M file and a 1K file\n2) 4M written, nr_to_write \u003c\u003d 0, so write more\n3) 1K written, nr_to_write \u003e 0, no more writes(BUG)\n\nnr_to_write \u003e 0 in (3) fools the upper layer to think that data have all been\nwritten out. The big dirty file is actually still sitting in s_more_io. We\ncannot simply splice s_more_io back to s_io as soon as s_io becomes empty, and\nlet the loop in generic_sync_sb_inodes() continue: this may starve newly\nexpired inodes in s_dirty. It is also not an option to draw inodes from both\ns_more_io and s_dirty, an let the loop go on: this might lead to live locks,\nand might also starve other superblocks in sync time(well kupdate may still\nstarve some superblocks, that\u0027s another bug).\n\nWe have to return when a full scan of s_io completes. So nr_to_write \u003e 0 does\nnot necessarily mean that \"all data are written\". This patch introduces a\nflag writeback_control.more_io to indicate this situation. With it the big\ndirty file no longer has to wait for the next kupdate invocation 5s later.\n\nCc: David Chinner \u003cdgc@sgi.com\u003e\nCc: Ken Chen \u003ckenchen@google.com\u003e\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e423003028183df54f039dfda8b58c49e78c89d7", "tree": "56df3ebc51ff86d58b054d9833770e78fb484973", "parents": [ "7a4050791b23c55a451974027d41d72a9b78039b" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Tue Oct 16 23:26:02 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:46 2007 -0700" }, "message": "writeback: don\u0027t propagate AOP_WRITEPAGE_ACTIVATE\n\nThis is a writeback-internal marker but we\u0027re propagating it all the way back\nto userspace!.\n\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3e26c149c358529b1605f8959341d34bc4b880a3", "tree": "9d173b1753b86bcf03a8591e2509e3162234447c", "parents": [ "04fbfdc14e5f48463820d6b9807daa5e9c92c51f" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Oct 16 23:25:50 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:45 2007 -0700" }, "message": "mm: dirty balancing for tasks\n\nBased on ideas of Andrew:\n http://marc.info/?l\u003dlinux-kernel\u0026m\u003d102912915020543\u0026w\u003d2\n\nScale the bdi dirty limit inversly with the tasks dirty rate.\nThis makes heavy writers have a lower dirty limit than the occasional writer.\n\nAndrea proposed something similar:\n http://lwn.net/Articles/152277/\n\nThe main disadvantage to his patch is that he uses an unrelated quantity to\nmeasure time, which leaves him with a workload dependant tunable. Other than\nthat the two approaches appear quite similar.\n\n[akpm@linux-foundation.org: fix warning]\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": "04fbfdc14e5f48463820d6b9807daa5e9c92c51f", "tree": "c62905212c8c6373b2258c7f528398d3c831b075", "parents": [ "145ca25eb2fbd20d4faf1bad4628c7650332058f" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Oct 16 23:25:50 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:45 2007 -0700" }, "message": "mm: per device dirty threshold\n\nScale writeback cache per backing device, proportional to its writeout speed.\n\nBy decoupling the BDI dirty thresholds a number of problems we currently have\nwill go away, namely:\n\n - mutual interference starvation (for any number of BDIs);\n - deadlocks with stacked BDIs (loop, FUSE and local NFS mounts).\n\nIt might be that all dirty pages are for a single BDI while other BDIs are\nidling. By giving each BDI a \u0027fair\u0027 share of the dirty limit, each one can have\ndirty pages outstanding and make progress.\n\nA global threshold also creates a deadlock for stacked BDIs; when A writes to\nB, and A generates enough dirty pages to get throttled, B will never start\nwriteback until the dirty pages go away. Again, by giving each BDI its own\n\u0027independent\u0027 dirty limit, this problem is avoided.\n\nSo the problem is to determine how to distribute the total dirty limit across\nthe BDIs fairly and efficiently. A DBI that has a large dirty limit but does\nnot have any dirty pages outstanding is a waste.\n\nWhat is done is to keep a floating proportion between the DBIs based on\nwriteback completions. This way faster/more active devices get a larger share\nthan slower/idle devices.\n\n[akpm@linux-foundation.org: fix warnings]\n[hugh@veritas.com: Fix occasional hang when a task couldn\u0027t get out of balance_dirty_pages]\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\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": "69cb51d18c1ed593009d9a620cac49d0dcf15dc8", "tree": "f26a1245b638e7421a0afd93305fd1c556867d49", "parents": [ "c9e51e4180696aa67915ec5665e4ec74125565de" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Oct 16 23:25:48 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:45 2007 -0700" }, "message": "mm: count writeback pages per BDI\n\nCount per BDI writeback pages.\n\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": "c9e51e4180696aa67915ec5665e4ec74125565de", "tree": "d66e1427b16e56bc7da0dfb583a6d8edb55a2c3e", "parents": [ "b2e8fb6efa209c82203c79b491b5bc952d44aa57" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Oct 16 23:25:47 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:45 2007 -0700" }, "message": "mm: count reclaimable pages per BDI\n\nCount per BDI reclaimable pages; nr_reclaimable \u003d nr_dirty + nr_unstable.\n\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": "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": "001281881067a5998384c6669bc8dbbbab8456c4", "tree": "6229d16c737782a36795354b218c74d4d2749752", "parents": [ "557ed1fa2620dc119adb86b34c614e152a629a80" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:40 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:53 2007 -0700" }, "message": "mm: use lockless radix-tree probe\n\nProbing pages and radix_tree_tagged are lockless operations with the lockless\nradix-tree. Convert these users to RCU locking rather than using tree_lock.\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": "a200ee182a016752464a12cb2e8762e48254bb09", "tree": "7b273f002625a4c368f7b20b144990f7f4f81df9", "parents": [ "3eb215de26e6e94bf5fed9cb77230c383b30e53b" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Mon Oct 08 18:54:37 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Oct 08 12:58:14 2007 -0700" }, "message": "mm: set_page_dirty_balance() vs -\u003epage_mkwrite()\n\nAll the current page_mkwrite() implementations also set the page dirty. Which\nresults in the set_page_dirty_balance() call to _not_ call balance, because the\npage is already found dirty.\n\nThis allows us to dirty a _lot_ of pages without ever hitting\nbalance_dirty_pages(). Not good (tm).\n\nForce a balance call if -\u003epage_mkwrite() was successful.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d688abf50bd5a30d2c44dea2a72dd59052cd3cce", "tree": "2f572d18af05969b2c882970cda4860be345bdfc", "parents": [ "6819457d2cb7fe4fdb0fc3655b6b6dc71a86bee9" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Thu Jul 19 01:49:17 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:52 2007 -0700" }, "message": "move page writeback acounting out of macros\n\npage-writeback accounting is presently performed in the page-flags macros.\nThis is inconsistent and a bit ugly and makes it awkward to implement\nper-backing_dev under-writeback page accounting.\n\nSo move this accounting down to the callsite(s).\n\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fe3cba17c49471e99d3421e675fc8b3deaaf0b70", "tree": "df696c4584c6db2e439f068d2474fcb946ca587d", "parents": [ "d8983910a4045fa21022cfccf76ed13eb40fd7f5" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Thu Jul 19 01:48:07 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:44 2007 -0700" }, "message": "mm: share PG_readahead and PG_reclaim\n\nShare the same page flag bit for PG_readahead and PG_reclaim.\n\nOne is used only on file reads, another is only for emergency writes. One\nis used mostly for fresh/young pages, another is for old pages.\n\nCombinations of possible interactions are:\n\na) clear PG_reclaim \u003d\u003e implicit clear of PG_readahead\n\tit will delay an asynchronous readahead into a synchronous one\n\tit actually does _good_ for readahead:\n\t\tthe pages will be reclaimed soon, it\u0027s readahead thrashing!\n\t\tin this case, synchronous readahead makes more sense.\n\nb) clear PG_readahead \u003d\u003e implicit clear of PG_reclaim\n\tone(and only one) page will not be reclaimed in time\n\tit can be avoided by checking PageWriteback(page) in readahead first\n\nc) set PG_reclaim \u003d\u003e implicit set of PG_readahead\n\twill confuse readahead and make it restart the size rampup process\n\tit\u0027s a trivial problem, and can mostly be avoided by checking\n\tPageWriteback(page) first in readahead\n\nd) set PG_readahead \u003d\u003e implicit set of PG_reclaim\n\tPG_readahead will never be set on already cached pages.\n\tPG_reclaim will always be cleared on dirtying a page.\n\tso not a problem.\n\nIn summary,\n\ta) we get better behavior\n\tb,d) possible interactions can be avoided\n\tc) racy condition exists that might affect readahead, but the chance\n\t is _really_ low, and the hurt on readahead is trivial.\n\nCompound pages also use PG_reclaim, but for now they do not interact with\nreclaim/readahead code.\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "79352894b28550ee0eee919149f57626ec1b3572", "tree": "849e6aa148c69b9df3920199255ca14792eeffa2", "parents": [ "83c54070ee1a2d05c89793884bea1a03f2851ed4" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Jul 19 01:47:22 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:41 2007 -0700" }, "message": "mm: fix clear_page_dirty_for_io vs fault race\n\nFix msync data loss and (less importantly) dirty page accounting\ninaccuracies due to the race remaining in clear_page_dirty_for_io().\n\nThe deleted comment explains what the race was, and the added comments\nexplain how it is fixed.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "787d2214c19bcc9b6ac48af0ce098277a801eded", "tree": "a040604fdf9620a66dc83a0cde4f2140e2ec25b3", "parents": [ "a1ed3dda0ad181532f1e0f0d548067fb9fdddac4" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Jul 17 04:03:34 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "fs: introduce some page/buffer invariants\n\nIt is a bug to set a page dirty if it is not uptodate unless it has\nbuffers. If the page has buffers, then the page may be dirty (some buffers\ndirty) but not uptodate (some buffers not uptodate). The exception to this\nrule is if the set_page_dirty caller is racing with truncate or invalidate.\n\nA buffer can not be set dirty if it is not uptodate.\n\nIf either of these situations occurs, it indicates there could be some data\nloss problem. Some of these warnings could be a harmless one where the\npage or buffer is set uptodate immediately after it is dirtied, however we\nshould fix those up, and enforce this ordering.\n\nBring the order of operations for truncate into line with those of\ninvalidate. This will prevent a page from being able to go !uptodate while\nwe\u0027re holding the tree_lock, which is probably a good thing anyway.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3e733f071e16bdad13a75eedb102e8941b09927e", "tree": "4c3be61c45b6b7a5943b4680a27b42aacf951b00", "parents": [ "97842216b8400fe9d1a20468959e2989180f8f79" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Sun Jul 15 23:41:05 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:47 2007 -0700" }, "message": "dirty_writeback_centisecs_handler() cleanup\n\nRepair indenting bustage.\n\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0ea971801625184a91a6d80ea85e53875caa0bf5", "tree": "6f4144b7ba809fccfe6d75314df8c348596c9a01", "parents": [ "e10cc1df1d2014f68a4bdcf73f6dd122c4561f94" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Thu May 10 22:22:51 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri May 11 08:29:35 2007 -0700" }, "message": "consolidate generic_writepages and mpage_writepages\n\nClean up massive code duplication between mpage_writepages() and\ngeneric_writepages().\n\nThe new generic function, write_cache_pages() takes a function pointer\nargument, which will be called for each page to be written.\n\nMaybe cifs_writepages() too can use this infrastructure, but I\u0027m not\ntouching that with a ten-foot pole.\n\nThe upcoming page writeback support in fuse will also want this.\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nAcked-by: Christoph Hellwig \u003chch@infradead.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3e9f45bd18191bbd05468b19b7064b8da8262aba", "tree": "06c790a9cb1afc83d170447a277e51f5a1a5f303", "parents": [ "c83e44842074a87614c78eca70fa6467b0bc3c4a" ], "author": { "name": "Guillaume Chazarain", "email": "guichaz@yahoo.fr", "time": "Tue May 08 00:23:25 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:14:57 2007 -0700" }, "message": "Factor outstanding I/O error handling\n\nCleanup: setting an outstanding error on a mapping was open coded too many\ntimes. Factor it out in mapping_set_error().\n\nSigned-off-by: Guillaume Chazarain \u003cguichaz@yahoo.fr\u003e\nCc: Steven Whitehouse \u003cswhiteho@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": "1b4244647ceaad42ea6eb12899d58753d82b7727", "tree": "fabdd30f1484d7ccda1374fffb9231c39450efb0", "parents": [ "476f35348eb8d2a827765992899fea78b7dcc46f" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun May 06 14:48:59 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:51 2007 -0700" }, "message": "Use ZVC counters to establish exact size of dirtyable pages\n\nWe can use the global ZVC counters to establish the exact size of the LRU\nand the free pages. This allows a more accurate determination of the dirty\nratio.\n\nThis patch will fix the broken ratio calculations if large amounts of\nmemory are allocated to huge pags or other consumers that do not put the\npages on to the LRU.\n\nNotes:\n- I did not add NR_SLAB_RECLAIMABLE to the calculation of the\n dirtyable pages. Those may be reclaimable but they are at this\n point not dirtyable. If NR_SLAB_RECLAIMABLE would be considered\n then a huge number of reclaimable pages would stop writeback\n from occurring.\n\n- This patch used to be in mm as the last one in a series of patches.\n It was removed when Linus updated the treatment of highmem because\n there was a conflict. I updated the patch to follow Linus\u0027 approach.\n This patch is neede to fulfill the claims made in the beginning of the\n patchset that is now in Linus\u0027 tree.\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": "07db59bd6b0f279c31044cba6787344f63be87ea", "tree": "692c90c6cc45de055bc59b12c2c953d462319831", "parents": [ "de46c33745f5e2ad594c72f2cf5f490861b16ce1" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Apr 27 09:10:47 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Apr 27 09:10:47 2007 -0700" }, "message": "Change default dirty-writeback limits\n\nDo this really early in the 2.6.22-rc series, so that we\u0027ll get\nfeedback. And don\u0027t change by half measures. Just cut the default\ndirty limit to a quarter of what it was, and see if anybody even\nnotices.\n\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "232ea4d69d81169453344b7d05203425c88d973b", "tree": "00799a50022f97a93c0e7524752b817399955851", "parents": [ "b1a316f6f9c54d668df4304ddf935595501ccb25" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Wed Feb 28 20:13:21 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Mar 01 14:53:38 2007 -0800" }, "message": "[PATCH] throttle_vm_writeout(): don\u0027t loop on GFP_NOFS and GFP_NOIO allocations\n\nthrottle_vm_writeout() is designed to wait for the dirty levels to subside.\nBut if the caller holds IO or FS locks, we might be holding up that writeout.\n\nSo change it to take a single nap to give other devices a chance to clean some\nmemory, then return.\n\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nCc: Kumar Gala \u003cgalak@kernel.crashing.org\u003e\nCc: Pete Zaitcev \u003czaitcev@redhat.com\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "aa0f030374228407bc4e3f5482eeab787ba53c8a", "tree": "8a4274e38b710caf8dd9f4beff24a2ac2722b116", "parents": [ "656dad312fb41ed95ef08325e9df9bece3aacbbb" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sat Feb 10 01:46:37 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 11:18:07 2007 -0800" }, "message": "[PATCH] Change constant zero to NOTIFY_DONE in ratelimit_handler()\n\nChange a hard-coded constant 0 to the symbolic equivalent NOTIFY_DONE in\nthe ratelimit_handler() CPU notifier handler function.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.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": "72fd4a35a824331d7a0f4168d7576502d95d34b3", "tree": "be27880bc36b7f62e8044a88b8744a35c5317714", "parents": [ "262086cf5b5343c2b81c97b1c606058e921859df" ], "author": { "name": "Robert P. J. Day", "email": "rpjday@mindspring.com", "time": "Sat Feb 10 01:45:59 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:32 2007 -0800" }, "message": "[PATCH] Numerous fixes to kernel-doc info in source files.\n\nA variety of (mostly) innocuous fixes to the embedded kernel-doc content in\nsource files, including:\n\n * make multi-line initial descriptions single line\n * denote some function names, constants and structs as such\n * change erroneous opening \u0027/*\u0027 to \u0027/**\u0027 in a few places\n * reword some text for clarity\n\nSigned-off-by: Robert P. J. Day \u003crpjday@mindspring.com\u003e\nCc: \"Randy.Dunlap\" \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "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": "dc6e29da9162fa8fa2a9e798569c0f6e87975614", "tree": "9d1e9c8095ea4fbc7d528a63d4b21e32e44a70a9", "parents": [ "5263bf65d6342e12ab716db8e529501670979321" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jan 29 16:37:38 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jan 29 16:37:38 2007 -0800" }, "message": "Fix balance_dirty_page() calculations with CONFIG_HIGHMEM\n\nThis makes balance_dirty_page() always base its calculations on the\namount of non-highmem memory in the machine, rather than try to base it\non total memory and then falling back on non-highmem memory if the\nmapping it was writing wasn\u0027t highmem capable.\n\nThis not only fixes a situation where two different writers can have\nwildly different notions about what is a \"balanced\" dirty state, but it\nalso means that people with highmem machines don\u0027t run into an OOM\nsituation when regular memory fills up with dirty pages.\n\nWe used to try to handle the latter case by scaling down the dirty_ratio\nif the machine had a lot of highmem pages in page_writeback_init(), but\nit wasn\u0027t aggressive enough for some situations, and since basing the\ndirty ratio on highmem memory was broken in the first place, let\u0027s just\nstop doing so.\n\n(A variation of this theme fixed Justin Piszcz\u0027s OOM problem when\ncopying an 18GB file on a RAID setup).\n\nAcked-by: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Justin Piszcz \u003cjpiszcz@lucidpixels.com\u003e\nCc: Andrew Morton \u003cakpm@osdl.org\u003e\nCc: Neil Brown \u003cneilb@suse.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7658cc289288b8ae7dd2c2224549a048431222b3", "tree": "bbd697764987e6eaf9cb8c49af3524d6a579dfdc", "parents": [ "3bf8ba38f38d3647368e4edcf7d019f9f8d9184a" ], "author": { "name": "Linus Torvalds", "email": "torvalds@macmini.osdl.org", "time": "Fri Dec 29 10:00:58 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@macmini.osdl.org", "time": "Fri Dec 29 10:00:58 2006 -0800" }, "message": "VM: Fix nasty and subtle race in shared mmap\u0027ed page writeback\n\nThe VM layer (on the face of it, fairly reasonably) expected that when\nit does a -\u003ewritepage() call to the filesystem, it would write out the\nfull page at that point in time. Especially since it had earlier marked\nthe whole page dirty with \"set_page_dirty()\".\n\nBut that isn\u0027t actually the case: -\u003ewritepage() does not actually write\na page, it writes the parts of the page that have been explicitly marked\ndirty before, *and* that had not got written out for other reasons since\nthe last time we told it they were dirty.\n\nThat last caveat is the important one.\n\nWhich _most_ of the time ends up being the whole page (since we had\ncalled \"set_page_dirty()\" on the page earlier), but if the filesystem\nhad done any dirty flushing of its own (for example, to honor some\ninternal write ordering guarantees), it might end up doing only a\npartial page IO (or none at all) when -\u003ewritepage() is actually called.\n\nThat is the correct thing in general (since we actually often _want_\nonly the known-dirty parts of the page to be written out), but the\nshared dirty page handling had implicitly forgotten about these details,\nand had a number of cases where it was doing just the \"-\u003ewritepage()\"\npart, without telling the low-level filesystem that the whole page might\nhave been re-dirtied as part of being mapped writably into user space.\n\nSince most of the time the FS did actually write out the full page, we\ndidn\u0027t notice this for a loong time, and this needed some really odd\npatterns to trigger. But it caused occasional corruption with rtorrent\nand with the Debian \"apt\" database, because both use shared mmaps to\nupdate the end result.\n\nThis fixes it. Finally. After way too much hair-pulling.\n\nAcked-by: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nAcked-by: Martin J. Bligh \u003cmbligh@google.com\u003e\nAcked-by: Martin Michlmayr \u003ctbm@cyrius.com\u003e\nAcked-by: Martin Johansson \u003cmartin@fatbob.nu\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Andrei Popa \u003candrei.popa@i-neo.ro\u003e\nCc: High Dickins \u003chugh@veritas.com\u003e\nCc: Andrew Morton \u003cakpm@osdl.org\u003e,\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Segher Boessenkool \u003csegher@kernel.crashing.org\u003e\nCc: David Miller \u003cdavem@davemloft.net\u003e\nCc: Arjan van de Ven \u003carjan@infradead.org\u003e\nCc: Gordon Farquharson \u003cgordonfarquharson@gmail.com\u003e\nCc: Guillaume Chazarain \u003cguichaz@yahoo.fr\u003e\nCc: Theodore Tso \u003ctytso@mit.edu\u003e\nCc: Kenneth Cheng \u003ckenneth.w.chen@intel.com\u003e\nCc: Tobias Diedrich \u003cranma@tdiedrich.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "fba2591bf4e418b6c3f9f8794c9dd8fe40ae7bd9", "tree": "d6909973e402b3171ee409f660b33df2fad029ba", "parents": [ "46d2277c796f9f4937bfa668c40b2e3f43e93dd0" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Wed Dec 20 13:46:42 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 21 09:19:57 2006 -0800" }, "message": "VM: Remove \"clear_page_dirty()\" and \"test_clear_page_dirty()\" functions\n\nThey were horribly easy to mis-use because of their tempting naming, and\nthey also did way more than any users of them generally wanted them to\ndo.\n\nA dirty page can become clean under two circumstances:\n\n (a) when we write it out. We have \"clear_page_dirty_for_io()\" for\n this, and that function remains unchanged.\n\n In the \"for IO\" case it is not sufficient to just clear the dirty\n bit, you also have to mark the page as being under writeback etc.\n\n (b) when we actually remove a page due to it becoming inaccessible to\n users, notably because it was truncate()\u0027d away or the file (or\n metadata) no longer exists, and we thus want to cancel any\n outstanding dirty state.\n\nFor the (b) case, we now introduce \"cancel_dirty_page()\", which only\ntouches the page state itself, and verifies that the page is not mapped\n(since cancelling writes on a mapped page would be actively wrong as it\nis still accessible to users).\n\nSome filesystems need to be fixed up for this: CIFS, FUSE, JFS,\nReiserFS, XFS all use the old confusing functions, and will be fixed\nseparately in subsequent commits (with some of them just removing the\noffending logic, and others using clear_page_dirty_for_io()).\n\nThis was confirmed by Martin Michlmayr to fix the apt database\ncorruption on ARM.\n\nCc: Martin Michlmayr \u003ctbm@cyrius.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Arjan van de Ven \u003carjan@infradead.org\u003e\nCc: Andrei Popa \u003candrei.popa@i-neo.ro\u003e\nCc: Andrew Morton \u003cakpm@osdl.org\u003e\nCc: Dave Kleikamp \u003cshaggy@linux.vnet.ibm.com\u003e\nCc: Gordon Farquharson \u003cgordonfarquharson@gmail.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "55e829af06681e5d731c03ba04febbd1c76ca293", "tree": "4304030be250d913f56696ffda8ae660fb17b110", "parents": [ "8c08540f8755c451d8b96ea14cfe796bc3cd712d" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Sun Dec 10 02:19:27 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:41 2006 -0800" }, "message": "[PATCH] io-accounting: write accounting\n\nAccounting writes is fairly simple: whenever a process flips a page from clean\nto dirty, we accuse it of having caused a write to underlying storage of\nPAGE_CACHE_SIZE bytes.\n\nThis may overestimate the amount of writing: the page-dirtying may cause only\none buffer_head\u0027s worth of writeout. Fixing that is possible, but probably a\nbit messy and isn\u0027t obviously important.\n\nCc: Jay Lan \u003cjlan@sgi.com\u003e\nCc: Shailabh Nagar \u003cnagar@watson.ibm.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Chris Sturtivant \u003ccsturtiv@sgi.com\u003e\nCc: Tony Ernst \u003ctee@sgi.com\u003e\nCc: Guillaume Thouvenin \u003cguillaume.thouvenin@bull.net\u003e\nCc: David Wright \u003cdaw@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "8c08540f8755c451d8b96ea14cfe796bc3cd712d", "tree": "ca2ba9673ce1c2733c538012105681b238265e48", "parents": [ "7c3ab7381e79dfc7db14a67c6f4f3285664e1ec2" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Sun Dec 10 02:19:24 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:41 2006 -0800" }, "message": "[PATCH] clean up __set_page_dirty_nobuffers()\n\nSave a tabstop in __set_page_dirty_nobuffers() and __set_page_dirty_buffers()\nand a few other places. No functional changes.\n\nCc: Jay Lan \u003cjlan@sgi.com\u003e\nCc: Shailabh Nagar \u003cnagar@watson.ibm.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Chris Sturtivant \u003ccsturtiv@sgi.com\u003e\nCc: Tony Ernst \u003ctee@sgi.com\u003e\nCc: Guillaume Thouvenin \u003cguillaume.thouvenin@bull.net\u003e\nCc: David Wright \u003cdaw@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": "f30c2269544bffc7bf1b0d7c0abe5be1be83b8cb", "tree": "2f6140d8a555af6a133690ed6b42599e78a43c54", "parents": [ "670e9f34ee3c7e052514c85014d2fdd99b672cdc" ], "author": { "name": "Uwe Zeisberger", "email": "Uwe_Zeisberger@digi.com", "time": "Tue Oct 03 23:01:26 2006 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue Oct 03 23:01:26 2006 +0200" }, "message": "fix file specification in comments\n\nMany files include the filename at the beginning, serveral used a wrong one.\n\nSigned-off-by: Uwe Zeisberger \u003cUwe_Zeisberger@digi.com\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "9361401eb7619c033e2394e4f9f6d410d6719ac7", "tree": "04b94a71f2366988c17740d1c16cfbdec41d5d2e", "parents": [ "d366e40a1cabd453be6e2609caa7e12f9ca17b1f" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Sat Sep 30 20:45:40 2006 +0200" }, "committer": { "name": "Jens Axboe", "email": "axboe@nelson.home.kernel.dk", "time": "Sat Sep 30 20:52:31 2006 +0200" }, "message": "[PATCH] BLOCK: Make it possible to disable the block layer [try #6]\n\nMake it possible to disable the block layer. Not all embedded devices require\nit, some can make do with just JFFS2, NFS, ramfs, etc - none of which require\nthe block layer to be present.\n\nThis patch does the following:\n\n (*) Introduces CONFIG_BLOCK to disable the block layer, buffering and blockdev\n support.\n\n (*) Adds dependencies on CONFIG_BLOCK to any configuration item that controls\n an item that uses the block layer. This includes:\n\n (*) Block I/O tracing.\n\n (*) Disk partition code.\n\n (*) All filesystems that are block based, eg: Ext3, ReiserFS, ISOFS.\n\n (*) The SCSI layer. As far as I can tell, even SCSI chardevs use the\n \t block layer to do scheduling. Some drivers that use SCSI facilities -\n \t such as USB storage - end up disabled indirectly from this.\n\n (*) Various block-based device drivers, such as IDE and the old CDROM\n \t drivers.\n\n (*) MTD blockdev handling and FTL.\n\n (*) JFFS - which uses set_bdev_super(), something it could avoid doing by\n \t taking a leaf out of JFFS2\u0027s book.\n\n (*) Makes most of the contents of linux/blkdev.h, linux/buffer_head.h and\n linux/elevator.h contingent on CONFIG_BLOCK being set. sector_div() is,\n however, still used in places, and so is still available.\n\n (*) Also made contingent are the contents of linux/mpage.h, linux/genhd.h and\n parts of linux/fs.h.\n\n (*) Makes a number of files in fs/ contingent on CONFIG_BLOCK.\n\n (*) Makes mm/bounce.c (bounce buffering) contingent on CONFIG_BLOCK.\n\n (*) set_page_dirty() doesn\u0027t call __set_page_dirty_buffers() if CONFIG_BLOCK\n is not enabled.\n\n (*) fs/no-block.c is created to hold out-of-line stubs and things that are\n required when CONFIG_BLOCK is not set:\n\n (*) Default blockdev file operations (to give error ENODEV on opening).\n\n (*) Makes some /proc changes:\n\n (*) /proc/devices does not list any blockdevs.\n\n (*) /proc/diskstats and /proc/partitions are contingent on CONFIG_BLOCK.\n\n (*) Makes some compat ioctl handling contingent on CONFIG_BLOCK.\n\n (*) If CONFIG_BLOCK is not defined, makes sys_quotactl() return -ENODEV if\n given command other than Q_SYNC or if a special device is specified.\n\n (*) In init/do_mounts.c, no reference is made to the blockdev routines if\n CONFIG_BLOCK is not defined. This does not prohibit NFS roots or JFFS2.\n\n (*) The bdflush, ioprio_set and ioprio_get syscalls can now be absent (return\n error ENOSYS by way of cond_syscall if so).\n\n (*) The seclvl_bd_claim() and seclvl_bd_release() security calls do nothing if\n CONFIG_BLOCK is not set, since they can\u0027t then happen.\n\nSigned-Off-By: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Jens Axboe \u003caxboe@kernel.dk\u003e\n" }, { "commit": "811d736f9e8013966e1a5a930c0db09508bdbb15", "tree": "566225f7991f987007ccc2e8d99255f21041b6cb", "parents": [ "7b0de42d7c5a471741ede4e71727d88000e6ea59" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Tue Aug 29 19:06:09 2006 +0100" }, "committer": { "name": "Jens Axboe", "email": "axboe@nelson.home.kernel.dk", "time": "Sat Sep 30 20:52:26 2006 +0200" }, "message": "[PATCH] BLOCK: Dissociate generic_writepages() from mpage stuff [try #6]\n\nDissociate the generic_writepages() function from the mpage stuff, moving its\ndeclaration to linux/mm.h and actually emitting a full implementation into\nmm/page-writeback.c.\n\nThe implementation is a partial duplicate of mpage_writepages() with all BIO\nreferences removed.\n\nIt is used by NFS to do writeback.\n\nSigned-Off-By: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Jens Axboe \u003caxboe@kernel.dk\u003e\n" }, { "commit": "cf9a2ae8d49948f861b56e5333530e491a9da190", "tree": "21f0b0d781b3e60cc60464d39b6d95681201b37e", "parents": [ "4090959aee403817ff386415f9bc602c1a0882ef" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Tue Aug 29 19:05:54 2006 +0100" }, "committer": { "name": "Jens Axboe", "email": "axboe@nelson.home.kernel.dk", "time": "Sat Sep 30 20:31:19 2006 +0200" }, "message": "[PATCH] BLOCK: Move functions out of buffer code [try #6]\n\nMove some functions out of the buffering code that aren\u0027t strictly buffering\nspecific. This is a precursor to being able to disable the block layer.\n\n (*) Moved some stuff out of fs/buffer.c:\n\n (*) The file sync and general sync stuff moved to fs/sync.c.\n\n (*) The superblock sync stuff moved to fs/super.c.\n\n (*) do_invalidatepage() moved to mm/truncate.c.\n\n (*) try_to_release_page() moved to mm/filemap.c.\n\n (*) Moved some related declarations between header files:\n\n (*) declarations for do_invalidatepage() and try_to_release_page() moved\n \t to linux/mm.h.\n\n (*) __set_page_dirty_buffers() moved to linux/buffer_head.h.\n\nSigned-Off-By: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Jens Axboe \u003caxboe@kernel.dk\u003e\n" }, { "commit": "2d1d43f6a43b703587e759145f69467e7c6553a7", "tree": "8ceb1c78a54c6f44f177779b2b7bdbbc9e03048a", "parents": [ "40c99aae23529f3d069ae08836ae46fadb3fd2bd" ], "author": { "name": "Chandra Seetharaman", "email": "sekharan@us.ibm.com", "time": "Fri Sep 29 02:01:25 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Sep 29 09:18:22 2006 -0700" }, "message": "[PATCH] call mm/page-writeback.c:set_ratelimit() when new pages are hot-added\n\nratelimit_pages in page-writeback.c is recalculated (in set_ratelimit())\nevery time a CPU is hot-added/removed. But this value is not recalculated\nwhen new pages are hot-added.\n\nThis patch fixes that problem by calling set_ratelimit() when new pages\nare hot-added.\n\n[akpm@osdl.org: cleanups]\nSigned-off-by: Chandra Seetharaman \u003csekharan@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "40c99aae23529f3d069ae08836ae46fadb3fd2bd", "tree": "5172ca1dca669de3ddc2a6aacc79e41667204aea", "parents": [ "153dcc54df826d2f8413c026313cba673c6bcc5b" ], "author": { "name": "Chandra Seetharaman", "email": "sekharan@us.ibm.com", "time": "Fri Sep 29 02:01:24 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Sep 29 09:18:22 2006 -0700" }, "message": "[PATCH] remove static variable mm/page-writeback.c:total_pages\n\npage-writeback.c has a static local variable \"total_pages\", which is the\ntotal number of pages in the system.\n\nThere is a global variable \"vm_total_pages\", which is the total number of\npages the VM controls.\n\nBoth are assigned from the return value of nr_free_pagecache_pages().\n\nThis patch removes the local variable and uses the global variable in that\nplace.\n\nOne more issue with the local static variable \"total_pages\" is that it is\nnot updated when new pages are hot-added. Since vm_total_pages is updated\nwhen new pages are hot-added, this patch fixes that problem too.\n\nSigned-off-by: Chandra Seetharaman \u003csekharan@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "db37648cd6ce9b828abd6d49aa3d269926ee7b7d", "tree": "a0155c7897f4706386d10c8718f98687bc357c82", "parents": [ "28e4d965e6131ace1e813e93aebca89ac6b82dc1" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Mon Sep 25 23:31:24 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:48 2006 -0700" }, "message": "[PATCH] mm: non syncing lock_page()\n\nlock_page needs the caller to have a reference on the page-\u003emapping inode\ndue to sync_page, ergo set_page_dirty_lock is obviously buggy according to\nits comments.\n\nSolve it by introducing a new lock_page_nosync which does not do a sync_page.\n\nakpm: unpleasant solution to an unpleasant problem. If it goes wrong it could\ncause great slowdowns while the lock_page() caller waits for kblockd to\nperform the unplug. And if a filesystem has special sync_page() requirements\n(none presently do), permanent hangs are possible.\n\notoh, set_page_dirty_lock() is usually (always?) called against userspace\npages. They are always up-to-date, so there shouldn\u0027t be any pending read I/O\nagainst these pages.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "edc79b2a46ed854595e40edcf3f8b37f9f14aa3f", "tree": "c1120bebede9660ab00f9439aa7a84ab9434ac38", "parents": [ "d08b3851da41d0ee60851f2c75b118e1f7a5fc89" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Mon Sep 25 23:30:58 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:44 2006 -0700" }, "message": "[PATCH] mm: balance dirty pages\n\nNow that we can detect writers of shared mappings, throttle them. Avoids OOM\nby surprise.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\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": "d08b3851da41d0ee60851f2c75b118e1f7a5fc89", "tree": "a01f6930a1387e8f66607e2fe16c62bb7044353b", "parents": [ "725d704ecaca4a43f067092c140d4f3271cf2856" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Mon Sep 25 23:30:57 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:44 2006 -0700" }, "message": "[PATCH] mm: tracking shared dirty pages\n\nTracking of dirty pages in shared writeable mmap()s.\n\nThe idea is simple: write protect clean shared writeable pages, catch the\nwrite-fault, make writeable and set dirty. On page write-back clean all the\nPTE dirty bits and write protect them once again.\n\nThe implementation is a tad harder, mainly because the default\nbacking_dev_info capabilities were too loosely maintained. Hence it is not\nenough to test the backing_dev_info for cap_account_dirty.\n\nThe current heuristic is as follows, a VMA is eligible when:\n - its shared writeable\n (vm_flags \u0026 (VM_WRITE|VM_SHARED)) \u003d\u003d (VM_WRITE|VM_SHARED)\n - it is not a \u0027special\u0027 mapping\n (vm_flags \u0026 (VM_PFNMAP|VM_INSERTPAGE)) \u003d\u003d 0\n - the backing_dev_info is cap_account_dirty\n mapping_cap_account_dirty(vma-\u003evm_file-\u003ef_mapping)\n - f_op-\u003emmap() didn\u0027t change the default page protection\n\nPage from remap_pfn_range() are explicitly excluded because their COW\nsemantics are already horrid enough (see vm_normal_page() in do_wp_page()) and\nbecause they don\u0027t have a backing store anyway.\n\nmprotect() is taught about the new behaviour as well. However it overrides\nthe last condition.\n\nCleaning the pages on write-back is done with page_mkclean() a new rmap call.\nIt can be called on any page, but is currently only implemented for mapped\npages, if the page is found the be of a VMA that accounts dirty pages it will\nalso wrprotect the PTE.\n\nFinally, in fs/buffers.c:try_to_free_buffers(); remove clear_page_dirty() from\nunder -\u003eprivate_lock. This seems to be safe, since -\u003eprivate_lock is used to\nserialize access to the buffers, not the page itself. This is needed because\nclear_page_dirty() will call into page_mkclean() and would thereby violate\nlocking order.\n\n[dhowells@redhat.com: Provide a page_mkclean() implementation for NOMMU]\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "275a082fe9308e710324e26ccb5363c53d8fd45f", "tree": "e97df6e45f98ea2827f71dc749f8cd47f3f353cc", "parents": [ "94a6d75320b3681e6e728b70e18bd186cb55e682" ], "author": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Tue Aug 22 20:06:24 2006 -0400" }, "committer": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Fri Sep 22 23:24:54 2006 -0400" }, "message": "Add a real API for dealing with blk_congestion_wait()\n\nSigned-off-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\n" }, { "commit": "c24f21bda88df4574de0a32a2a1558a23adae1b8", "tree": "1cf2f0b69cc691c2e1a9ed569a7a98179cc9683e", "parents": [ "d2c5e30c9a1420902262aa923794d2ae4e0bc391" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:42 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:36 2006 -0700" }, "message": "[PATCH] zoned vm counters: remove useless struct wbs\n\nRemove writeback state\n\nWe can remove some functions now that were needed to calculate the page state\nfor writeback control since these statistics are now directly available.\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": "fd39fc8561be33065306bdac0e30414e1e8ac8e1", "tree": "ae0740716eed3f850a8f7232c61caebe360bb5ae", "parents": [ "ce866b34ae1b7f1ce60234cf65855886ac7e7d30" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:40 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:36 2006 -0700" }, "message": "[PATCH] zoned vm counters: conversion of nr_unstable to per zone counter\n\nConversion of nr_unstable to a per zone counter\n\nWe need to do some special modifications to the nfs code since there are\nmultiple cases of disposition and we need to have a page ref for proper\naccounting.\n\nThis converts the last critical page state of the VM and therefore we need to\nremove several functions that were depending on GET_PAGE_STATE_LAST in order\nto make the kernel compile again. We are only left with event type counters\nin page state.\n\n[akpm@osdl.org: bugfixes]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ce866b34ae1b7f1ce60234cf65855886ac7e7d30", "tree": "e9a2664f0abc5221b9a92e1417d8e02b94a634c4", "parents": [ "b1e7a8fd854d2f895730e82137400012b509650e" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:40 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:35 2006 -0700" }, "message": "[PATCH] zoned vm counters: conversion of nr_writeback to per zone counter\n\nConversion of nr_writeback to per zone counter.\n\nThis removes the last page_state counter from arch/i386/mm/pgtable.c so we\ndrop the page_state from there.\n\n[akpm@osdl.org: bugfix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "b1e7a8fd854d2f895730e82137400012b509650e", "tree": "9fba87ff6b0146ebd4ee5bc7d5f0c8b037dbb3ad", "parents": [ "df849a1529c106f7460e51479ca78fe07b07dc8c" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:39 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:35 2006 -0700" }, "message": "[PATCH] zoned vm counters: conversion of nr_dirty to per zone counter\n\nThis makes nr_dirty a per zone counter. Looping over all processors is\navoided during writeback state determination.\n\nThe counter aggregation for nr_dirty had to be undone in the NFS layer since\nwe summed up the page counts from multiple zones. Someone more familiar with\nNFS should probably review what I have done.\n\n[akpm@osdl.org: bugfix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f3dbd34460ff54962d3e3244b6bcb7f5295356e6", "tree": "91caae2b90d684a7640b5da451a9a2ff8a5c8fb8", "parents": [ "bf02cf4b6cf931d060ad5c6ce9b960af6faefd2d" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:36 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:35 2006 -0700" }, "message": "[PATCH] zoned vm counters: split NR_ANON_PAGES off from NR_FILE_MAPPED\n\nThe current NR_FILE_MAPPED is used by zone reclaim and the dirty load\ncalculation as the number of mapped pagecache pages. However, that is not\ntrue. NR_FILE_MAPPED includes the mapped anonymous pages. This patch\nseparates those and therefore allows an accurate tracking of the anonymous\npages per zone.\n\nIt then becomes possible to determine the number of unmapped pages per zone\nand we can avoid scanning for unmapped pages if there are none.\n\nAlso it may now be possible to determine the mapped/unmapped ratio in\nget_dirty_limit. Isnt the number of anonymous pages irrelevant in that\ncalculation?\n\nNote that this will change the meaning of the number of mapped pages reported\nin /proc/vmstat /proc/meminfo and in the per node statistics. This may affect\nuser space tools that monitor these counters! NR_FILE_MAPPED works like\nNR_FILE_DIRTY. It is only valid for pagecache pages.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "65ba55f500a37272985d071c9bbb35256a2f7c14", "tree": "e7735326ef2d2dca9d00a6c5ae47e9eb03c7834f", "parents": [ "2244b95a7bcf8d24196f8a3a44187ba5dfff754c" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:34 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:34 2006 -0700" }, "message": "[PATCH] zoned vm counters: convert nr_mapped to per zone counter\n\nnr_mapped is important because it allows a determination of how many pages of\na zone are not mapped, which would allow a more efficient means of determining\nwhen we need to reclaim memory in a zone.\n\nWe take the nr_mapped field out of the page state structure and define a new\nper zone counter named NR_FILE_MAPPED (the anonymous pages will be split off\nfrom NR_MAPPED in the next patch).\n\nWe replace the use of nr_mapped in various kernel locations. This avoids the\nlooping over all processors in try_to_free_pages(), writeback, reclaim (swap +\nzone reclaim).\n\n[akpm@osdl.org: bugfix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "26c2143b63b8078d08d562733716de142927e17a", "tree": "6a2add2bca5bffbd33a0465fd934fffa34a695e9", "parents": [ "74b85f3790aa2550c617fe14439482e13e615fa0" ], "author": { "name": "Chandra Seetharaman", "email": "sekharan@us.ibm.com", "time": "Tue Jun 27 02:54:10 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jun 27 17:32:41 2006 -0700" }, "message": "[PATCH] cpu hotplug: make cpu_notifier related notifier calls __cpuinit only\n\nMake notifier_calls associated with cpu_notifier as __cpuinit.\n\n__cpuinit makes sure that the function is init time only unless\nCONFIG_HOTPLUG_CPU is defined.\n\n[akpm@osdl.org: section fix]\nSigned-off-by: Chandra Seetharaman \u003csekharan@us.ibm.com\u003e\nCc: Ashok Raj \u003cashok.raj@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "74b85f3790aa2550c617fe14439482e13e615fa0", "tree": "125e9c503d483c304e111ca825358bd81e0610cd", "parents": [ "65edc68c345cbe21d0b0375c3452a3ed5e322868" ], "author": { "name": "Chandra Seetharaman", "email": "sekharan@us.ibm.com", "time": "Tue Jun 27 02:54:09 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jun 27 17:32:41 2006 -0700" }, "message": "[PATCH] cpu hotplug: make cpu_notifier related notifier blocks __cpuinit only\n\nMake notifier_blocks associated with cpu_notifier as __cpuinitdata.\n\n__cpuinitdata makes sure that the data is init time only unless\nCONFIG_HOTPLUG_CPU is defined.\n\nSigned-off-by: Chandra Seetharaman \u003csekharan@us.ibm.com\u003e\nCc: Ashok Raj \u003cashok.raj@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "111ebb6e6f7bd7de6d722c5848e95621f43700d9", "tree": "bb00b13001db9be201e9b6d31468a79f4d1240bf", "parents": [ "4c91c3648c620003cb7b21b8858f36cd6132e168" ], "author": { "name": "OGAWA Hirofumi", "email": "hirofumi@mail.parknet.co.jp", "time": "Fri Jun 23 02:03:26 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:49 2006 -0700" }, "message": "[PATCH] writeback: fix range handling\n\nWhen a writeback_control\u0027s `start\u0027 and `end\u0027 fields are used to\nindicate a one-byte-range starting at file offset zero, the required\nvalues of .start\u003d0,.end\u003d0 mean that the -\u003ewritepages() implementation\nhas no way of telling that it is being asked to perform a range\nrequest. Because we\u0027re currently overloading (start \u003d\u003d 0 \u0026\u0026 end \u003d\u003d 0)\nto mean \"this is not a write-a-range request\".\n\nTo make all this sane, the patch changes range of writeback_control.\n\nSo caller does: If it is calling -\u003ewritepages() to write pages, it\nsets range (range_start/end or range_cyclic) always.\n\nAnd if range_cyclic is true, -\u003ewritepages() thinks the range is\ncyclic, otherwise it just uses range_start and range_end.\n\nThis patch does,\n\n - Add LLONG_MAX, LLONG_MIN, ULLONG_MAX to include/linux/kernel.h\n -1 is usually ok for range_end (type is long long). But, if someone did,\n\n\t\trange_end +\u003d val;\t\trange_end is \"val - 1\"\n\t\tu64val \u003d range_end \u003e\u003e bits;\tu64val is \"~(0ULL)\"\n\n or something, they are wrong. So, this adds LLONG_MAX to avoid nasty\n things, and uses LLONG_MAX for range_end.\n\n - All callers of -\u003ewritepages() sets range_start/end or range_cyclic.\n\n - Fix updates of -\u003ewriteback_index. It seems already bit strange.\n If it starts at 0 and ended by check of nr_to_write, this last\n index may reduce chance to scan end of file. So, this updates\n -\u003ewriteback_index only if range_cyclic is true or whole-file is\n scanned.\n\nSigned-off-by: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nCc: Nathan Scott \u003cnathans@sgi.com\u003e\nCc: Anton Altaparmakov \u003caia21@cantab.net\u003e\nCc: Steven French \u003csfrench@us.ibm.com\u003e\nCc: \"Vladimir V. Saveliev\" \u003cvs@namesys.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "fd5403c79bc21819f6e0c40ba098cea8b6a418bd", "tree": "d63e61d010e79c82042defef4ba983b759240d2d", "parents": [ "7551d9a20b3cfbac9f8a28b7d909c4b15a94924f" ], "author": { "name": "Coywolf Qi Hunt", "email": "coywolf@gmail.com", "time": "Mon Apr 10 22:54:35 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Apr 11 06:18:46 2006 -0700" }, "message": "[PATCH] page-writeback comment fixes\n\nSigned-off-by: Coywolf Qi Hunt \u003cqiyong@fc-cn.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "a580290c3e64bb695158a090d02d1232d9609311", "tree": "70f29239b9a206a9afb77ddff35fc47b5b248866", "parents": [ "5d9428de1a9785f10a4339f80b717be665ba51c7" ], "author": { "name": "Martin Waitz", "email": "tali@admingilde.org", "time": "Sun Apr 02 13:59:55 2006 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Sun Apr 02 13:59:55 2006 +0200" }, "message": "Documentation: fix minor kernel-doc warnings\n\nThis patch updates the comments to match the actual code.\n\nSigned-off-by: Martin Waitz \u003ctali@admingilde.org\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "4741c9fd36b3bcadd37238321c469049da94a4b9", "tree": "4b3031b04cdbf2d3c5a4fcc1965ed857f1cf0ce4", "parents": [ "fa5a734e406b53761fcc5ee22366006f71112c2d" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Fri Mar 24 03:18:11 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Mar 24 07:33:26 2006 -0800" }, "message": "[PATCH] set_page_dirty() return value fixes\n\nWe need set_page_dirty() to return true if it actually transitioned the page\nfrom a clean to dirty state. This wasn\u0027t right in a couple of places. Do a\nkernel-wide audit, fix things up.\n\nThis leaves open the possibility of returning a negative errno from\nset_page_dirty() sometime in the future. But we don\u0027t do that at present.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "fa5a734e406b53761fcc5ee22366006f71112c2d", "tree": "003a238b9207e38f747bfb119a30fb52f1cd5ae9", "parents": [ "8a14342683b1e3adcf5f78660a42fcbd95b44a35" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Fri Mar 24 03:18:10 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Mar 24 07:33:26 2006 -0800" }, "message": "[PATCH] balance_dirty_pages_ratelimited: take nr_pages arg\n\nModify balance_dirty_pages_ratelimited() so that it can take a\nnumber-of-pages-which-I-just-dirtied argument. For msync().\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ed5b43f15a8e86e3ae939b98bc161ee973ecedf2", "tree": "dcd5bc0b5817d6452b0897a08293317f470f4db9", "parents": [ "f6ef943813ac3085ece7252ea101d663581219f6" ], "author": { "name": "Bart Samwel", "email": "bart@samwel.tk", "time": "Fri Mar 24 03:15:49 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Mar 24 07:33:20 2006 -0800" }, "message": "[PATCH] Represent laptop_mode as jiffies internally\n\nMake that the internal value for /proc/sys/vm/laptop_mode is stored as\njiffies instead of seconds. Let the sysctl interface do the conversions,\ninstead of doing on-the-fly conversions every time the value is used.\n\nAdd a description of the fact that laptop_mode doubles as a flag and a\ntimeout to the comment above the laptop_mode variable.\n\nSigned-off-by: Bart Samwel \u003cbart@samwel.tk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f6ef943813ac3085ece7252ea101d663581219f6", "tree": "e32d3e57ba6ae235ec1f510b16d77fe9bfa8f96e", "parents": [ "36f574135e36b86bb6ae794bf1d0fce3efa5601f" ], "author": { "name": "Bart Samwel", "email": "bart@samwel.tk", "time": "Fri Mar 24 03:15:48 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Mar 24 07:33:20 2006 -0800" }, "message": "[PATCH] Represent dirty_*_centisecs as jiffies internally\n\nMake that the internal values for:\n\n/proc/sys/vm/dirty_writeback_centisecs\n/proc/sys/vm/dirty_expire_centisecs\n\nare stored as jiffies instead of centiseconds. Let the sysctl interface do\nthe conversions with full precision using clock_t_to_jiffies, instead of\ndoing overflow-sensitive on-the-fly conversions every time the values are\nused.\n\nCons: apparent precision loss if HZ is not a multiple of 100, because of\nconversion back and forth. This is a common problem for all sysctl values\nthat use proc_dointvec_userhz_jiffies. (There is only one other in-tree\nuse, in net/core/neighbour.c.)\n\nSigned-off-by: Bart Samwel \u003cbart@samwel.tk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e236a166b2bc437769a9b8b5d19186a3761bde48", "tree": "326c45b5592650dc28f0ece22e8d9b5cd810a09d", "parents": [ "c2aeacd48ca2418fbac985a58d2200c263444d65" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Wed Jan 18 17:42:26 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Jan 18 19:20:17 2006 -0800" }, "message": "[PATCH] mm: dirty_exceeded speedup\n\nRavikiran reports that this variable is bouncing all around nodes on NUMA\nmachines, causing measurable performance problems. Fix that up by only\nwriting to it when it actually changed.\n\nAnd put it in a new cacheline to prevent it sharing with other things (this\nhappened).\n\nSigned-off-by: Ravikiran Thirumalai \u003ckiran@scalex86.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "22905f775dd6a8b73be99826dcad07ceec00244b", "tree": "960c0ad3d10fa208a31b78256788f332e5ebdd48", "parents": [ "d99cf9d679a520d67f81d805b7cb91c68e1847f0" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Wed Nov 16 15:07:01 2005 -0800" }, "committer": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Fri Jan 06 14:58:38 2006 -0500" }, "message": "identify multipage -\u003ewritepages() calls\n\n NFS needs to be able to distinguish between single-page -\u003ewritepage() calls and\n multipage -\u003ewritepages() calls.\n\n For the single-page writepage calls NFS can kick off the I/O within the\n context of -\u003ewritepage().\n\n For multipage -\u003ewritepages calls, nfs_writepage() will leave the I/O pending\n and nfs_writepages() will kick off the I/O when it all has been queued up\n within NFS.\n\n Cc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\n Signed-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\n Signed-off-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\n" }, { "commit": "58bb01a9cd72eebf60d00c57b948a76aa7b85727", "tree": "556a2185831feae57684f9c92f011a559420dab7", "parents": [ "996417d2c4eb583e94553e4ede58974e0da1c38e" ], "author": { "name": "Hans Reiser", "email": "reiser@namesys.com", "time": "Fri Nov 18 01:10:53 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Nov 18 07:49:45 2005 -0800" }, "message": "[PATCH] re-export clear_page_dirty_for_io()\n\n2.6.14 has this exported, and reiser4 (at least) uses it. Put things back\nthe way they were.\n\nSigned-off-by: Vladimir V. Saveliev \u003cvs@namesys.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e6a7e0e7cee3d4bc9a9d2f82ef2f9de4687a5656", "tree": "a9f5fcf248676f96517bae6216f5a4c9809bcb84", "parents": [ "99697dc02d2c1e8234c88d4256879d080483a57a" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Mon Nov 07 01:01:38 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Nov 07 07:54:06 2005 -0800" }, "message": "[PATCH] unexport clear_page_dirty_for_io\n\nI didn\u0027t find any possible modular usage in the kernel.\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": "8d06afab73a75f40ae2864e6c296356bab1ab473", "tree": "1d9c8c24a1024a12a4e8df841fba5809fa914356", "parents": [ "7c352bdf048811b8128019ffc1e886161e09c11c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Sep 09 13:10:40 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Sep 09 14:03:48 2005 -0700" }, "message": "[PATCH] timer initialization cleanup: DEFINE_TIMER\n\nClean up timer initialization by introducing DEFINE_TIMER a\u0027la\nDEFINE_SPINLOCK. Build and boot-tested on x86. A similar patch has been\nbeen in the -RT tree for some time.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "687a21cee17000177b1935896b9b475acf136678", "tree": "41e59684ae6479e84b34edc46972ce32c2cc58b7", "parents": [ "05133fc498e788e1c1ca4e906f9e05d9779fd63b" ], "author": { "name": "Pekka J Enberg", "email": "penberg@cs.Helsinki.FI", "time": "Tue Jun 28 20:44:55 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 28 21:20:31 2005 -0700" }, "message": "[PATCH] rename wakeup_bdflush to wakeup_pdflush\n\nSigned-off-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "67be2dd1bace0ec7ce2dbc1bba3f8df3d7be597e", "tree": "317d114a0288d3b19ef9902f94b536a5a8731dbd", "parents": [ "6013d5445f9a6d0b28090027868f455c5012d1cc" ], "author": { "name": "Martin Waitz", "email": "tali@admingilde.org", "time": "Sun May 01 08:59:26 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sun May 01 08:59:26 2005 -0700" }, "message": "[PATCH] DocBook: fix some descriptions\n\nSome KernelDoc descriptions are updated to match the current code.\nNo code changes.\n\nSigned-off-by: Martin Waitz \u003ctali@admingilde.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "tree": "0bba044c4ce775e45a88a51686b5d9f90697ea9d", "parents": [], "author": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Apr 16 15:20:36 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Apr 16 15:20:36 2005 -0700" }, "message": "Linux-2.6.12-rc2\n\nInitial git repository build. I\u0027m not bothering with the full history,\neven though we have it. We can create a separate \"historical\" git\narchive of that later if we want to, and in the meantime it\u0027s about\n3.2GB when imported into git - space that would just make the early\ngit days unnecessarily complicated, when we don\u0027t have a lot of good\ninfrastructure for it.\n\nLet it rip!\n" } ] }