)]}' { "log": [ { "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": "7d03431cf98aaed635524024273668bb8cedadda", "tree": "aae817e9bd8398fd3521514d0c7573db7b5823ae", "parents": [ "ab33dc09a5c0d2bd6757afa1c2f804c9657daec0" ], "author": { "name": "Fernando Luis Vazquez Cao", "email": "fernando@oss.ntt.co.jp", "time": "Tue Jul 29 22:33:41 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jul 30 09:41:46 2008 -0700" }, "message": "swapfile/vmscan: update comments related to vmscan functions\n\nSigned-off-by: Fernando Luis Vazquez Cao \u003cfernando@oss.ntt.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: 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": "7c363b8c6536f26934172d3c46f0bbec01a97c61", "tree": "46a9ce1b0ef9285ab2c7b04f0cf584294853a16f", "parents": [ "15f59adae001766a2c7f7fe4f196387bb04bcff5" ], "author": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Fri Jul 25 19:46:24 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jul 26 12:00:12 2008 -0700" }, "message": "mm/swapfile.c: make code static\n\nThis patch makes the following needlessly global code static:\n - swap_lock\n - nr_swapfiles\n - struct swap_list\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "19fd6231279be3c3bdd02ed99f9b0eb195978064", "tree": "ee09121054262d73c551b57114acd855b82a7a82", "parents": [ "a60637c85893e7191faaafa6a72e197c24386727" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Fri Jul 25 19:45:32 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jul 26 12:00:06 2008 -0700" }, "message": "mm: spinlock tree_lock\n\nmapping-\u003etree_lock has no read lockers. convert the lock from an rwlock\nto a spinlock.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\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: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "78ecba081224a2db5876b6b81cfed0b78f58adc7", "tree": "db29cc9357ea95172f42e64e833a3a7d3fcfa8fb", "parents": [ "83d1674a946141c3c59d430e96c224f7937e6158" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Wed Jul 23 21:28:23 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jul 24 10:47:21 2008 -0700" }, "message": "mm: fix ever-decreasing swap priority\n\nVegard Nossum has noticed the ever-decreasing negative priority in a\nswapon /swapoff loop, which eventually would misprioritize when int wraps\npositive. Not worth spending much code on, but probably better fixed.\n\nIt\u0027s easy to handle the swapping on and off of just one area, but there\u0027s\nnot much point if a pair or more still misbehave. To handle the general\ncase, swapoff should compact negative priorities, keeping them always from\n-1 to -MAX_SWAPFILES. That\u0027s a change, but should cause no regression,\nsince these negative (unspecified) priorities are disjoint from the the\npositive specified priorities 0 to 32767.\n\nOne small functional difference, which seems appropriate: when swapoff\nfails to free all swap from a negative priority area, that area is now\nreinserted at lowest priority, rather than at its original priority.\n\nIn moving down swapon\u0027s setting of priority, I notice that an area is\nvisible to /proc/swaps when it has swap_map set, yet that was being set\nbefore all the visible fields were properly filled in: corrected.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nReported-by: Vegard Nossum \u003cvegard.nossum@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3d71f86f4dfccd749e4421f10301f3f3b31da88a", "tree": "7a052e776b660a2fa1bbe3702fd061bc3d3e6a37", "parents": [ "6a6375db13703b42dd51b28576d444bb73c541b9" ], "author": { "name": "Denis V. Lunev", "email": "den@openvz.org", "time": "Tue Apr 29 01:02:13 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 29 08:06:20 2008 -0700" }, "message": "mm: use non-racy method for /proc/swaps creation\n\nUse proc_create() to make sure that -\u003eproc_fops be setup before gluing PDE to\nmain tree.\n\nSigned-off-by: Denis V. Lunev \u003cden@openvz.org\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "797df5749032c2286bc7ff3a52de41fde0cdf0a5", "tree": "38ebb9f0672c6eeab3269cc875f22422fa2c908b", "parents": [ "19770b32609b6bf97a3dece2529089494cbfc549" ], "author": { "name": "Chris Dearman", "email": "chris@mips.com", "time": "Mon Apr 28 02:12:19 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:19 2008 -0700" }, "message": "mm: try both endianess when checking for endianess\n\nWhen checking for the swap header try byteswapping the endianess dependent\nfields to allow the swap partition to be shared between big \u0026 little endian\nsystems.\n\nSigned-off-by: Chris Dearman \u003cchris@mips.com\u003e\nSigned-off-by: Ralf Baechle \u003cralf@linux-mips.org\u003e\nAcked-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": "c32c2f63a9d6c953aaf168c0b2551da9734f76d2", "tree": "14eca3083f3de4a87a95359ab66109c10add1ae7", "parents": [ "e83aece3afad4d56cc01abe069d3519e851cd2de" ], "author": { "name": "Jan Blunck", "email": "jblunck@suse.de", "time": "Thu Feb 14 19:38:43 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Feb 14 21:17:08 2008 -0800" }, "message": "d_path: Make seq_path() use a struct path argument\n\nseq_path() is always called with a dentry and a vfsmount from a struct path.\nMake seq_path() take it directly as an argument.\n\nSigned-off-by: Jan Blunck \u003cjblunck@suse.de\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: \"J. Bruce Fields\" \u003cbfields@fieldses.org\u003e\nCc: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "044d66c1d2b1c5aa50b4d6d68c21c6c93dd678da", "tree": "35442e01a5ef7e2d45abc20d45122c3c4c809d5d", "parents": [ "3062fc67dad01b1d2a15d58c709eff946389eca4" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Thu Feb 07 00:14:04 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Feb 07 08:42:19 2008 -0800" }, "message": "memcgroup: reinstate swapoff mod\n\nThis patch reinstates the \"swapoff: scan ptes preemptibly\" mod we started\nwith: in due course it should be rendered down into the earlier patches,\nleaving us with a more straightforward mem_cgroup_charge mod to unuse_pte,\nallocating with GFP_KERNEL while holding no spinlock and no atomic kmap.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Pavel Emelianov \u003cxemul@openvz.org\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Kirill Korotaev \u003cdev@sw.ru\u003e\nCc: Herbert Poetzl \u003cherbert@13thfloor.at\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Vaidyanathan Srinivasan \u003csvaidy@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": "e1a1cd590e3fcb0d2e230128daf2337ea55387dc", "tree": "eb660ab340c657a1eb595b2d4d8e8b62783bf6fb", "parents": [ "bed7161a519a2faef53e1bce1b47595e297c1d14" ], "author": { "name": "Balbir Singh", "email": "balbir@linux.vnet.ibm.com", "time": "Thu Feb 07 00:14:02 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Feb 07 08:42:19 2008 -0800" }, "message": "Memory controller: make charging gfp mask aware\n\nNick Piggin pointed out that swap cache and page cache addition routines\ncould be called from non GFP_KERNEL contexts. This patch makes the\ncharging routine aware of the gfp context. Charging might fail if the\ncgroup is over it\u0027s limit, in which case a suitable error is returned.\n\nThis patch was tested on a Powerpc box. I am still looking at being able\nto test the path, through which allocations happen in non GFP_KERNEL\ncontexts.\n\n[kamezawa.hiroyu@jp.fujitsu.com: problem with ZONE_MOVABLE]\nSigned-off-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Pavel Emelianov \u003cxemul@openvz.org\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Kirill Korotaev \u003cdev@sw.ru\u003e\nCc: Herbert Poetzl \u003cherbert@13thfloor.at\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Vaidyanathan Srinivasan \u003csvaidy@linux.vnet.ibm.com\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8a9f3ccd24741b50200c3f33d62534c7271f3dfc", "tree": "066aabd8d2952299501f067a91cbfd6f47ee62f6", "parents": [ "78fb74669e80883323391090e4d26d17fe29488f" ], "author": { "name": "Balbir Singh", "email": "balbir@linux.vnet.ibm.com", "time": "Thu Feb 07 00:13:53 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Feb 07 08:42:18 2008 -0800" }, "message": "Memory controller: memory accounting\n\nAdd the accounting hooks. The accounting is carried out for RSS and Page\nCache (unmapped) pages. There is now a common limit and accounting for both.\nThe RSS accounting is accounted at page_add_*_rmap() and page_remove_rmap()\ntime. Page cache is accounted at add_to_page_cache(),\n__delete_from_page_cache(). Swap cache is also accounted for.\n\nEach page\u0027s page_cgroup is protected with the last bit of the\npage_cgroup pointer, this makes handling of race conditions involving\nsimultaneous mappings of a page easier. A reference count is kept in the\npage_cgroup to deal with cases where a page might be unmapped from the RSS\nof all tasks, but still lives in the page cache.\n\nCredits go to Vaidyanathan Srinivasan for helping with reference counting work\nof the page cgroup. Almost all of the page cache accounting code has help\nfrom Vaidyanathan Srinivasan.\n\n[hugh@veritas.com: fix swapoff breakage]\n[akpm@linux-foundation.org: fix locking]\nSigned-off-by: Vaidyanathan Srinivasan \u003csvaidy@linux.vnet.ibm.com\u003e\nSigned-off-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Pavel Emelianov \u003cxemul@openvz.org\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Kirill Korotaev \u003cdev@sw.ru\u003e\nCc: Herbert Poetzl \u003cherbert@13thfloor.at\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: \u003cValdis.Kletnieks@vt.edu\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": "59bd26582de660d4c9c26125747f1b4a5eb40d1e", "tree": "2b7606b3f18a87cdee5022381ba52f94efdb5d42", "parents": [ "1b6df3aa457690100f9827548943101447766572" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Thu Feb 07 00:13:48 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Feb 07 08:42:18 2008 -0800" }, "message": "memcgroup: temporarily revert swapoff mod\n\nThis patch precisely reverts the \"swapoff: scan ptes preemptibly\" patch\njust presented. It\u0027s a temporary measure to allow existing memory\ncontroller patches to apply without rejects: in due course they should be\nrendered down into one sensible patch, and this reversion disappear.\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\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": "2e441889c38fe1b6ef6b963e6993076aa120176c", "tree": "f8cc99d2b8a3b90c6ff2c3e6d14e90d7edd95d7e", "parents": [ "8952898b0d25223f38daf46b86156fd1c4d17ad0" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Feb 04 22:28:46 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:15 2008 -0800" }, "message": "swapoff: scan ptes preemptibly\n\nProvided that CONFIG_HIGHPTE is not set, unuse_pte_range can reduce latency\nin swapoff by scanning the page table preemptibly: so long as unuse_pte is\ncareful to recheck that entry under pte lock.\n\n(To tell the truth, this patch was not inspired by any cries for lower\nlatency here: rather, this restructuring permits a future memory controller\npatch to allocate with GFP_KERNEL in unuse_pte, where before it could not.\nBut it would be wrong to tuck this change away inside a memcgroup patch.)\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nTested-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8952898b0d25223f38daf46b86156fd1c4d17ad0", "tree": "10912460cd9d42195d4aba8250ed1c3bd3577bb4", "parents": [ "5402b976ae0be96b3a32f3508ab7308c380d6477" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Mon Feb 04 22:28:45 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:15 2008 -0800" }, "message": "swapin: fix valid_swaphandles defect\n\nvalid_swaphandles is supposed to do a quick pass over the swap map entries\nneigbouring the entry which swapin_readahead is targetting, to determine for\nit a range worth reading all together. But since it always starts its search\nfrom the beginning of the swap \"cluster\", a reject (free entry) there\nimmediately curtails the readaround, and every swapin_readahead from that\ncluster is for just a single page. Instead scan forwards and backwards around\nthe target entry.\n\nUse better names for some variables: a swap_info pointer is usually called\n\"si\" not \"swapdev\". And at the end, if only the target page should be read,\nreturn count of 0 to disable readaround, to avoid the unnecessarily repeated\ncall to read_swap_cache_async.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Rik van Riel \u003criel@surriel.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": "b0cb1a19d05b8ea8611a9ef48a17fe417f1832e6", "tree": "895fe53e8dc4fc59d05b963ac079f6ff759ad0fb", "parents": [ "6c8dca5d53f95009d4fff00195bf38f277dc4366" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Sun Jul 29 23:24:36 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Jul 29 16:45:38 2007 -0700" }, "message": "Replace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATION\n\nReplace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATION to avoid\nconfusion (among other things, with CONFIG_SUSPEND introduced in the\nnext patch).\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2706a1b89b1a3e7434a668d4a9d15f616da96685", "tree": "6b8d8b8d24811c7f8b4593e0b600533f9d5329f6", "parents": [ "553948491c18413928b85a9025b92af80e7d61d6" ], "author": { "name": "Anderson Briglia", "email": "briglia.anderson@gmail.com", "time": "Sun Jul 15 23:38:09 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:35 2007 -0700" }, "message": "vmscan: fix comments related to shrink_list()\n\nFix the shrink_list name on some files under mm/ directory.\n\nSigned-off-by: Anderson Briglia \u003canderson.briglia@indt.org.br\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6fe6900e1e5b6fa9e5c59aa5061f244fe3f467e2", "tree": "8bbfe5072279227cc50a941ad4813908082426a1", "parents": [ "714b8171af9c930a59a0da8f6fe50518e70ab035" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sun May 06 14:49:04 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:51 2007 -0700" }, "message": "mm: make read_cache_page synchronous\n\nEnsure pages are uptodate after returning from read_cache_page, which allows\nus to cut out most of the filesystem-internal PageUptodate calls.\n\nI didn\u0027t have a great look down the call chains, but this appears to fixes 7\npossible use-before uptodate in hfs, 2 in hfsplus, 1 in jfs, a few in\necryptfs, 1 in jffs2, and a possible cleared data overwritten with readpage in\nblock2mtd. All depending on whether the filler is async and/or can return\nwith a !uptodate page.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7bf236874292fd073c6bdd27f89c3d9e81a79cbc", "tree": "27e4196e4b720c113010d544567f76f181c11428", "parents": [ "3223ea8cca5936b8e78450dd5b8ba88372e9c0a8" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Fri Jan 05 16:36:28 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Jan 05 23:55:22 2007 -0800" }, "message": "[PATCH] swsusp: Do not fail if resume device is not set\n\nIn the kernels later than 2.6.19 there is a regression that makes swsusp\nfail if the resume device is not explicitly specified.\n\nIt can be fixed by adding an additional parameter to\nmm/swapfile.c:swap_type_of() allowing us to pass the (struct block_device\n*) corresponding to the first available swap back to the caller.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nAcked-by: Pavel Machek \u003cpavel@ucw.cz\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": "3aef83e0ef1ffb8ea3bea97be46821a45c952173", "tree": "f73878eb2ecce804c9eea6fbb13603907b3674b4", "parents": [ "3fc6b34f4803b959c1e30c15247e2180cd529115" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Wed Dec 06 20:34:10 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:27 2006 -0800" }, "message": "[PATCH] swsusp: use block device offsets to identify swap locations\n\nMake swsusp use block device offsets instead of swap offsets to identify swap\nlocations and make it use the same code paths for writing as well as for\nreading data.\n\nThis allows us to use the same code for handling swap files and swap\npartitions and to simplify the code, eg. by dropping rw_swap_page_sync().\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "915bae9ebe41e52d71ad8b06d50e4ab26189f964", "tree": "daf0c9a370d3a551c1bb5beea69a3a0cfecd9885", "parents": [ "3592695c363c3f3119621bdcf5ed852d6b9d1a5c" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Wed Dec 06 20:34:07 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:27 2006 -0800" }, "message": "[PATCH] swsusp: use partition device and offset to identify swap areas\n\nThe Linux kernel handles swap files almost in the same way as it handles swap\npartitions and there are only two differences between these two types of swap\nareas:\n\n(1) swap files need not be contiguous,\n\n(2) the header of a swap file is not in the first block of the partition\n that holds it. From the swsusp\u0027s point of view (1) is not a problem,\n because it is already taken care of by the swap-handling code, but (2) has\n to be taken into consideration.\n\nIn principle the location of a swap file\u0027s header may be determined with the\nhelp of appropriate filesystem driver. Unfortunately, however, it requires\nthe filesystem holding the swap file to be mounted, and if this filesystem is\njournaled, it cannot be mounted during a resume from disk. For this reason we\nneed some other means by which swap areas can be identified.\n\nFor example, to identify a swap area we can use the partition that holds the\narea and the offset from the beginning of this partition at which the swap\nheader is located.\n\nThe following patch allows swsusp to identify swap areas this way. It changes\nswap_type_of() so that it takes an additional argument representing an offset\nof the swap header within the partition represented by its first argument.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nAcked-by: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "5d1854e15ee979f8e27330f0d3ce5e2703afa1dc", "tree": "8aff9641966020284218f2cdd75fd3b7bfc2babc", "parents": [ "4af2bfc1202041006a0f01d0591a975f6c573f09" ], "author": { "name": "Eric Sandeen", "email": "sandeen@redhat.com", "time": "Wed Dec 06 20:33:06 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:23 2006 -0800" }, "message": "[PATCH] reject corrupt swapfiles earlier\n\nThe fsfuzzer found this; with a corrupt small swapfile that claims to have\nmany pages:\n\n [root]# file swap.741.img\n swap.741.img: Linux/i386 swap file (new style) 1 (4K pages) size 1040191487 pages\n [root]# ls -l swap.741.img\n -rw-r--r-- 1 root root 16777216 Nov 22 05:18 swap.741.img\n\nsys_swapon() will try to vmalloc all those pages, and -then- check to see if\nthe file is actually that large:\n\n if (!(p-\u003eswap_map \u003d vmalloc(maxpages * sizeof(short)))) {\n \u003csnip\u003e\n if (swapfilesize \u0026\u0026 maxpages \u003e swapfilesize) {\n printk(KERN_WARNING\n \"Swap area shorter than signature indicates\\n\");\n\nIt seems to me that it would make more sense to move this test up before\nthe vmalloc, with the other checks, to avoid the OOM-killer in this\nsituation...\n\nSigned-off-by: Eric Sandeen \u003csandeen@redhat.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": "881e4aabe4c6b3fce93674b67c6adc646fe2683b", "tree": "f5e429c01ca20c8bb8bd300e33013f056516b131", "parents": [ "b43a57bb4dae72e8f7232e7c821a8799eda30022" ], "author": { "name": "Suleiman Souhlal", "email": "ssouhlal@FreeBSD.org", "time": "Wed Dec 06 20:32:28 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:22 2006 -0800" }, "message": "[PATCH] Always print out the header line in /proc/swaps\n\nIt would be possible for /proc/swaps to not always print out the header:\n\nswapon /dev/hdc2\nswapon /dev/hde2\nswapoff /dev/hdc2\n\nAt this point /proc/swaps would not have a header.\n\nSigned-off-by: Suleiman Souhlal \u003csuleiman@google.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": "3f9e7949f86dfe2bd9a1ad0604f78e7683c059de", "tree": "af710aa375e0f641ceec1bf7d4002ef33beeb571", "parents": [ "2d1d43f6a43b703587e759145f69467e7c6553a7" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Fri Sep 29 02:01:26 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Sep 29 09:18:23 2006 -0700" }, "message": "[PATCH] valid_swaphandles() fix\n\nakpm draws my attention to the fact that sysctl(VM_PAGE_CLUSTER) might\nconceivably change page_cluster to 0 while valid_swaphandles() is in the\nmiddle of using it, leading to an embarrassingly long loop: take a local\nsnapshot of page_cluster and work with that.\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" }, { "commit": "b6b5bce3571e496504a89ee575d32101e0a98b93", "tree": "283d4da88216071813b25d82c6e49a5ab71948f9", "parents": [ "c06aad854fdb9da38fcc22dccfe9d72919453e43" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Sun Aug 27 01:23:25 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Aug 27 11:01:28 2006 -0700" }, "message": "[PATCH] swsusp: Fix swap_type_of\n\nThere is a bug in mm/swapfile.c#swap_type_of() that makes swsusp only be\nable to use the first active swap partition as the resume device. Fix it.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Pavel Machek \u003cpavel@suse.cz\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": "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": "090d2b185d8680fc26a2eaf4245d4171dcf4baf1", "tree": "67e604e3cd1bad3cfd034bced19a0fbff6a80c30", "parents": [ "c330dda908b5a46469a997eea90b66f2f9f02b34" ], "author": { "name": "Pekka Enberg", "email": "penberg@cs.helsinki.fi", "time": "Fri Jun 23 02:05:08 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:43:02 2006 -0700" }, "message": "[PATCH] read_mapping_page for address space\n\nAdd read_mapping_page() which is used for callers that pass\nmapping-\u003ea_ops-\u003ereadpage as the filler for read_cache_page. This removes\nsome duplication from filesystem code.\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": "70af7c5c6492ef6ad137dbff6c4568c73edbcaf0", "tree": "4e8646ba72b14f2bdd94802d42684c00c1a7507c", "parents": [ "9637a5efd4fbe36164c5ce7f6a0ee68b2bf22b7f" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Fri Jun 23 02:03:44 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:51 2006 -0700" }, "message": "[PATCH] swapoff: use atomic_inc_not_zero() on mm_users\n\nNow that we have atomic_inc_not_zero, it\u0027s more elegant for try_to_unuse to\nuse that on mm_users: doesn\u0027t actually matter at present, but safer to be\nsure that once mm_users has gone to 0, nothing raises it for an instant.\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" }, { "commit": "d75a0fcda2cfc71b50e16dc89e0c32c57d427e85", "tree": "cc9dda0a0e53e62c859bf7fcafe7b9c9f6de2352", "parents": [ "0697212a411c1dae03c27845f2de2f3adb32c331" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 23 02:03:36 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:50 2006 -0700" }, "message": "[PATCH] Swapless page migration: rip out swap based logic\n\nRip the page migration logic out.\n\nRemove all code that has to do with swapping during page migration.\n\nThis also guts the ability to migrate pages to swap. No one used that so lets\nlet it go for good.\n\nPage migration should be a bit broken after this patch.\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": "0697212a411c1dae03c27845f2de2f3adb32c331", "tree": "4bedcdb27522f4a42c422e0a8af155501f43a69c", "parents": [ "8351a6e4785218a2b03c142be92926baff95ba5c" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 23 02:03:35 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:50 2006 -0700" }, "message": "[PATCH] Swapless page migration: add R/W migration entries\n\nImplement read/write migration ptes\n\nWe take the upper two swapfiles for the two types of migration ptes and define\na series of macros in swapops.h.\n\nThe VM is modified to handle the migration entries. migration entries can\nonly be encountered when the page they are pointing to is locked. This limits\nthe number of places one has to fix. We also check in copy_pte_range and in\nmprotect_pte_range() for migration ptes.\n\nWe check for migration ptes in do_swap_cache and call a function that will\nthen wait on the page lock. This allows us to effectively stop all accesses\nto apge.\n\nMigration entries are created by try_to_unmap if called for migration and\nremoved by local functions in migrate.c\n\nFrom: Hugh Dickins \u003chugh@veritas.com\u003e\n\n Several times while testing swapless page migration (I\u0027ve no NUMA, just\n hacking it up to migrate recklessly while running load), I\u0027ve hit the\n BUG_ON(!PageLocked(p)) in migration_entry_to_page.\n\n This comes from an orphaned migration entry, unrelated to the current\n correctly locked migration, but hit by remove_anon_migration_ptes as it\n checks an address in each vma of the anon_vma list.\n\n Such an orphan may be left behind if an earlier migration raced with fork:\n copy_one_pte can duplicate a migration entry from parent to child, after\n remove_anon_migration_ptes has checked the child vma, but before it has\n removed it from the parent vma. (If the process were later to fault on this\n orphaned entry, it would hit the same BUG from migration_entry_wait.)\n\n This could be fixed by locking anon_vma in copy_one_pte, but we\u0027d rather\n not. There\u0027s no such problem with file pages, because vma_prio_tree_add\n adds child vma after parent vma, and the page table locking at each end is\n enough to serialize. Follow that example with anon_vma: add new vmas to the\n tail instead of the head.\n\n (There\u0027s no corresponding problem when inserting migration entries,\n because a missed pte will leave the page count and mapcount high, which is\n allowed for. And there\u0027s no corresponding problem when migrating via swap,\n because a leftover swap entry will be correctly faulted. But the swapless\n method has no refcounting of its entries.)\n\nFrom: Ingo Molnar \u003cmingo@elte.hu\u003e\n\n pte_unmap_unlock() takes the pte pointer as an argument.\n\nFrom: Hugh Dickins \u003chugh@veritas.com\u003e\n\n Several times while testing swapless page migration, gcc has tried to exec\n a pointer instead of a string: smells like COW mappings are not being\n properly write-protected on fork.\n\n The protection in copy_one_pte looks very convincing, until at last you\n realize that the second arg to make_migration_entry is a boolean \"write\",\n and SWP_MIGRATION_READ is 30.\n\n Anyway, it\u0027s better done like in change_pte_range, using\n is_write_migration_entry and make_migration_entry_read.\n\nFrom: Hugh Dickins \u003chugh@veritas.com\u003e\n\n Remove unnecessary obfuscation from sys_swapon\u0027s range check on swap type,\n which blew up causing memory corruption once swapless migration made\n MAX_SWAPFILES no longer 2 ^ MAX_SWAPFILES_SHIFT.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nFrom: 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": "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": "93fac7041f082297b93655a0e49f659cd7520e40", "tree": "2d8f295087377d4ac0ceea49dd67bb682b04c749", "parents": [ "9bf9e89c3d147ca8cf9622d2d053684fba77a464" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Fri Mar 31 02:29:56 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Mar 31 12:18:49 2006 -0800" }, "message": "[PATCH] mm: schedule find_trylock_page() removal\n\nfind_trylock_page() is an odd interface in that it doesn\u0027t take a reference\nlike the others. Now that XFS no longer uses it, and its last remaining\ncaller actually wants an elevated refcount, opencode that callsite and\nschedule find_trylock_page() for removal.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6e1819d615f24ce0726a7d0bd3dd0152d7b21654", "tree": "abc68747446e8241a1a7103882b9f6b6e24fa274", "parents": [ "543cc27d09643640cbc34189c03a40beb8227aef" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Thu Mar 23 03:00:03 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Thu Mar 23 07:38:07 2006 -0800" }, "message": "[PATCH] swsusp: userland interface\n\nThis patch introduces a user space interface for swsusp.\n\nThe interface is based on a special character device, called the snapshot\ndevice, that allows user space processes to perform suspend and resume-related\noperations with the help of some ioctls and the read()/write() functions.\n Additionally it allows these processes to allocate free swap pages from a\nselected swap partition, called the resume partition, so that they know which\nsectors of the resume partition are available to them.\n\nThe interface uses the same low-level system memory snapshot-handling\nfunctions that are used by the built-it swap-writing/reading code of swsusp.\n\nThe interface documentation is included in the patch.\n\nThe patch assumes that the major and minor numbers of the snapshot device will\nbe 10 (ie. misc device) and 231, the registration of which has already been\nrequested.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nAcked-by: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f577eb30afdc68233f25d4d82b04102129262365", "tree": "25d3c2fa8dfbf42fd0d4776a36166736fcc1446a", "parents": [ "2b322ce210aec74ae0d02938d3a01e29fe079469" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Thu Mar 23 02:59:59 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Thu Mar 23 07:38:07 2006 -0800" }, "message": "[PATCH] swsusp: low level interface\n\nIntroduce the low level interface that can be used for handling the\nsnapshot of the system memory by the in-kernel swap-writing/reading code of\nswsusp and the userland interface code (to be introduced shortly).\n\nAlso change the way in which swsusp records the allocated swap pages and,\nconsequently, simplifies the in-kernel swap-writing/reading code (this is\nnecessary for the userland interface too). To this end, it introduces two\nhelper functions in mm/swapfile.c, so that the swsusp code does not refer\ndirectly to the swap internals.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nAcked-by: Pavel Machek \u003cpavel@ucw.cz\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": "9b65ef59d42a56fa1358958ede77aaa5bac385a8", "tree": "c6f83951e399cf52784f6d200c9588e4c41d6461", "parents": [ "879336c3930ae9273ea1c45214cb8adae0ce494a" ], "author": { "name": "Akinobu Mita", "email": "mita@miraclelinux.com", "time": "Wed Mar 22 00:09:09 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Mar 22 07:54:06 2006 -0800" }, "message": "[PATCH] fix swap cluster offset\n\nWhen we\u0027ve allocated SWAPFILE_CLUSTER pages, -\u003ecluster_next should be the\nfirst index of swap cluster. But current code probably sets it wrong offset.\n\nSigned-off-by: Akinobu Mita \u003cmita@miraclelinux.com\u003e\nAcked-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "a3351e525e4768c29aa5d22ef59b5b38e0361e53", "tree": "457ab54f402b471c5158e8b361d059e88ab8cd62", "parents": [ "a48d07afdf18212de22b959715b16793c5a6e57a" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Feb 01 03:05:39 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Feb 01 08:53:16 2006 -0800" }, "message": "[PATCH] Direct Migration V9: remove_from_swap() to remove swap ptes\n\nAdd remove_from_swap\n\nremove_from_swap() allows the restoration of the pte entries that existed\nbefore page migration occurred for anonymous pages by walking the reverse\nmaps. This reduces swap use and establishes regular pte\u0027s without the need\nfor page faults.\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": "b16664e44c54525be89dc07ad15a13b4eeec5634", "tree": "1844d193009c1e55e3c26256feb14bc622ec9af3", "parents": [ "2a16e3f4b0c408b9e50297d2ec27e295d490267a" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Feb 01 03:05:36 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Feb 01 08:53:16 2006 -0800" }, "message": "[PATCH] Direct Migration V9: PageSwapCache checks\n\nCheck for PageSwapCache after looking up and locking a swap page.\n\nThe page migration code may change a swap pte to point to a different page\nunder lock_page().\n\nIf that happens then the vm must retry the lookup operation in the swap space\nto find the correct page number. There are a couple of locations in the VM\nwhere a lock_page() is done on a swap page. In these locations we need to\ncheck afterwards if the page was migrated. If the page was migrated then the\nold page that was looked up before was freed and no longer has the\nPageSwapCache bit set.\n\nSigned-off-by: Hirokazu Takahashi \u003ctaka@valinux.co.jp\u003e\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "fc0abb1451c64c79ac80665d5ba74450ce274e4d", "tree": "30301b6134b122a638104645bd6bd4b45014dd2c", "parents": [ "1743660b911bfb849b1fb33830522254561b9f9b" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 18 17:42:33 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Jan 18 19:20:18 2006 -0800" }, "message": "[PATCH] sem2mutex: mm/slab.c\n\nConvert mm/swapfile.c\u0027s swapon_sem to swapon_mutex.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\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": "c59ede7b78db329949d9cdcd7064e22d357560ef", "tree": "f9dc9d464fdad5bfd464d983e77c1af031389dda", "parents": [ "e16885c5ad624a6efe1b1bf764e075d75f65a788" ], "author": { "name": "Randy.Dunlap", "email": "rdunlap@xenotime.net", "time": "Wed Jan 11 12:17:46 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Jan 11 18:42:13 2006 -0800" }, "message": "[PATCH] move capable() to capability.h\n\n- Move capable() from sched.h to capability.h;\n\n- Use \u003clinux/capability.h\u003e where capable() is used\n\t(in include/, block/, ipc/, kernel/, a few drivers/,\n\tmm/, security/, \u0026 sound/;\n\tmany more drivers/ to go)\n\nSigned-off-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e97a31117c0f96be6637f68b4029609bb1f2cc7c", "tree": "6754f5be8904bf1e034c7c24fe992304a017c75a", "parents": [ "ffd59daceb7db5f7c54f095c5529cec45222c1f1" ], "author": { "name": "Jesper Juhl", "email": "juhl-lkml@dif.dk", "time": "Wed Jan 11 01:50:28 2006 +0100" }, "committer": { "name": "Adrian Bunk", "email": "bunk@r063144.stusta.swh.mhn.de", "time": "Wed Jan 11 01:50:28 2006 +0100" }, "message": "add missing printk loglevel in mm/swapfile.c\n\nin mm/swapfile.c a printk() is missing a loglevel. I believe the proper\nloglevel for this situation is KERN_ERR, so that\u0027s what the patch below\nsets -if you agree, please apply.\n\nSigned-off-by: Jesper Juhl \u003cjuhl-lkml@dif.dk\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "1b1dcc1b57a49136f118a0f16367256ff9994a69", "tree": "b0b36d4f41d28c9d6514fb309d33c1a084d6309b", "parents": [ "794ee1baee1c26be40410233e6c20bceb2b03c08" ], "author": { "name": "Jes Sorensen", "email": "jes@sgi.com", "time": "Mon Jan 09 15:59:24 2006 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@hera.kernel.org", "time": "Mon Jan 09 15:59:24 2006 -0800" }, "message": "[PATCH] mutex subsystem, semaphore to mutex: VFS, -\u003ei_sem\n\nThis patch converts the inode semaphore to a mutex. I have tested it on\nXFS and compiled as much as one can consider on an ia64. Anyway your\nluck with it might be different.\n\nModified-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n\n(finished the conversion)\n\nSigned-off-by: Jes Sorensen \u003cjes@sgi.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "cd105df4590c89837a1c300843238148cfef9b5f", "tree": "bea54d8f24ad97d4af5fda6baac5711fa524af0e", "parents": [ "152194aaa6266d71dfee57882a23def339ef17a4" ], "author": { "name": "Tobias Klauser", "email": "tklauser@nuerscht.ch", "time": "Sun Jan 08 01:00:59 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jan 08 20:12:43 2006 -0800" }, "message": "[PATCH] mm: clean up local variables\n\nClean up a local variable with the same name as a variable in a larger\nblock. Also move a variable into the block where it\u0027s actually used.\n\nSpotted by http://linuxicc.sourceforge.net/\n\nSigned-off-by: Tobias Klauser \u003ctklauser@nuerscht.ch\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "3a291a20bd6fcfafb2109031f0760a0d3e92ecd7", "tree": "6c034471da9b2aac77b9810af640bb7a515cb299", "parents": [ "ca0aec0f7a94bf9f07fefa8bfd23282d4e8ceb8a" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Fri Jan 06 00:16:37 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jan 06 08:33:43 2006 -0800" }, "message": "[PATCH] mm: add a new function (needed for swap suspend)\n\nThis adds the function get_swap_page_of_type() allowing us to specify an index\nin swap_info[] and select a swap_info_struct structure to be used for\nallocating a swap page.\n\nThis function (or another one of similar functionality) will be necessary for\nimplementing the image-writing part of swsusp in the user space.  It can also\nbe used for simplifying the current in-kernel implementation of the\nimage-writing part of swsusp.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nAcked-by: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e2de225710b0f7480c29700bf93326b078657db8", "tree": "d2c0ea62f9a5c0c8f262633af2d2e5a7745e651b", "parents": [ "1b09d16489f831bfc23d1c7311ee331b0680e90e" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Mon Nov 07 01:01:41 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Nov 07 07:54:07 2005 -0800" }, "message": "[PATCH] mm/swapfile.c: unexport total_swap_pages\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": "4c21e2f2441dc5fbb957b030333f5a3f2d02dea7", "tree": "1f76d33bb1d76221c6424bc5fed080a4f91349a6", "parents": [ "b38c6845b695141259019e2b7c0fe6c32a6e720d" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Oct 29 18:16:40 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 29 21:40:42 2005 -0700" }, "message": "[PATCH] mm: split page table lock\n\nChristoph Lameter demonstrated very poor scalability on the SGI 512-way, with\na many-threaded application which concurrently initializes different parts of\na large anonymous area.\n\nThis patch corrects that, by using a separate spinlock per page table page, to\nguard the page table entries in that page, instead of using the mm\u0027s single\npage_table_lock. (But even then, page_table_lock is still used to guard page\ntable allocation, and anon_vma allocation.)\n\nIn this implementation, the spinlock is tucked inside the struct page of the\npage table page: with a BUILD_BUG_ON in case it overflows - which it would in\nthe case of 32-bit PA-RISC with spinlock debugging enabled.\n\nSplitting the lock is not quite for free: another cacheline access. Ideally,\nI suppose we would use split ptlock only for multi-threaded processes on\nmulti-cpu machines; but deciding that dynamically would have its own costs.\nSo for now enable it by config, at some number of cpus - since the Kconfig\nlanguage doesn\u0027t support inequalities, let preprocessor compare that with\nNR_CPUS. But I don\u0027t think it\u0027s worth being user-configurable: for good\ntesting of both split and unsplit configs, split now at 4 cpus, and perhaps\nchange that to 8 later.\n\nThere is a benefit even for singly threaded processes: kswapd can be attacking\none part of the mm while another part is busy faulting.\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" }, { "commit": "705e87c0c3c38424f7f30556c85bc20e808d2f59", "tree": "7a237e6266f4801385e1226cc497b47e3a2458bd", "parents": [ "8f4e2101fd7df9031a754eedb82e2060b51f8c45" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Oct 29 18:16:27 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 29 21:40:40 2005 -0700" }, "message": "[PATCH] mm: pte_offset_map_lock loops\n\nConvert those common loops using page_table_lock on the outside and\npte_offset_map within to use just pte_offset_map_lock within instead.\n\nThese all hold mmap_sem (some exclusively, some not), so at no level can a\npage table be whipped away from beneath them. But whereas pte_alloc loops\ntested with the \"atomic\" pmd_present, these loops are testing with pmd_none,\nwhich on i386 PAE tests both lower and upper halves.\n\nThat\u0027s now unsafe, so add a cast into pmd_none to test only the vital lower\nhalf: we lose a little sensitivity to a corrupt middle directory, but not\nenough to worry about. It appears that i386 and UML were the only\narchitectures vulnerable in this way, and pgd and pud no problem.\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" }, { "commit": "4294621f41a85497019fae64341aa5351a1921b7", "tree": "fdeb7eb44384a99d0679ffa6de5019bab0ea2166", "parents": [ "404351e67a9facb475abf1492245374a28d13e90" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Oct 29 18:16:05 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 29 21:40:38 2005 -0700" }, "message": "[PATCH] mm: rss \u003d file_rss + anon_rss\n\nI was lazy when we added anon_rss, and chose to change as few places as\npossible. So currently each anonymous page has to be counted twice, in rss\nand in anon_rss. Which won\u0027t be so good if those are atomic counts in some\nconfigurations.\n\nChange that around: keep file_rss and anon_rss separately, and add them\ntogether (with get_mm_rss macro) when the total is needed - reading two\natomics is much cheaper than updating two atomics. And update anon_rss\nupfront, typically in memory.c, not tucked away in page_add_anon_rmap.\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" }, { "commit": "72866f6f277ec0ddd6df7a3b6ecdcf59a28de115", "tree": "a76bb7fb8e092250c4399c20f0c7c973b77cb0bb", "parents": [ "6237bcd94851e9cf0ecd2520d744779df0f5a9a6" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Oct 29 18:15:55 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 29 21:40:36 2005 -0700" }, "message": "[PATCH] mm: anon is already wrprotected\n\ndo_anonymous_page\u0027s pte_wrprotect causes some confusion: in such a case,\nvm_page_prot must already be forcing COW, so must omit write permission, and\nso the pte_wrprotect is redundant. Replace it by a comment to that effect,\nand reword the comment on unuse_pte which also caused confusion.\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" }, { "commit": "f7b3a4359b25311fb5894c8809478a2df6bed480", "tree": "ef2e2a707f1b5d5095c9e2e1e6d760d77ad2b31b", "parents": [ "8bdac5d1ed892da54b6b2069e50a47b3aa39460f" ], "author": { "name": "Rob Landley", "email": "rob@landley.net", "time": "Thu Sep 22 21:44:27 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Thu Sep 22 22:17:37 2005 -0700" }, "message": "[PATCH] Fix bd_claim() error code.\n\nProblem: In some circumstances, bd_claim() is returning the wrong error\ncode.\n\nIf we try to swapon an unused block device that isn\u0027t swap formatted, we\nget -EINVAL. But if that same block device is already mounted, we instead\nget -EBUSY, even though it still isn\u0027t a valid swap device.\n\nThis issue came up on the busybox list trying to get the error message\nfrom \"swapon -a\" right. If a swap device is already enabled, we get -EBUSY,\nand we shouldn\u0027t report this as an error. But we can\u0027t distinguish the two\n-EBUSY conditions, which are very different errors.\n\nIn the code, bd_claim() returns either 0 or -EBUSY, but in this case busy\nmeans \"somebody other than sys_swapon has already claimed this\", and\n_that_ means this block device can\u0027t be a valid swap device. So return\n-EINVAL there.\n\nSigned-off-by: Rob Landley \u003crob@landley.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "13e4b57f6a4e23ceb99794a650d777e74831f4a6", "tree": "a585fdc3a2374dbedcf0114fa3c38d2fb7920774", "parents": [ "75bcc8c5e1de78616b04ef9f317a293a7c1c163c" ], "author": { "name": "Nishanth Aravamudan", "email": "nacc@us.ibm.com", "time": "Sat Sep 10 00:27:25 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Sep 10 10:06:37 2005 -0700" }, "message": "[PATCH] mm: fix-up schedule_timeout() usage\n\nUse schedule_timeout_{,un}interruptible() instead of\nset_current_state()/schedule_timeout() to reduce kernel size.\n\nSigned-off-by: Nishanth Aravamudan \u003cnacc@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "5d337b9194b1ce3b6fd5f3cb2799455ed2f9a3d1", "tree": "91ed9ef6f4cb5f6a1832f2baaaabd53fcd83513e", "parents": [ "048c27fd72816b44e096997d1c6901c3abbfd45b" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:41 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:42 2005 -0700" }, "message": "[PATCH] swap: swap_lock replace list+device\n\nThe idea of a swap_device_lock per device, and a swap_list_lock over them all,\nis appealing; but in practice almost every holder of swap_device_lock must\nalready hold swap_list_lock, which defeats the purpose of the split.\n\nThe only exceptions have been swap_duplicate, valid_swaphandles and an\nuntrodden path in try_to_unuse (plus a few places added in this series).\nvalid_swaphandles doesn\u0027t show up high in profiles, but swap_duplicate does\ndemand attention. However, with the hold time in get_swap_pages so much\nreduced, I\u0027ve not yet found a load and set of swap device priorities to show\neven swap_duplicate benefitting from the split. Certainly the split is mere\noverhead in the common case of a single swap device.\n\nSo, replace swap_list_lock and swap_device_lock by spinlock_t swap_lock\n(generally we seem to prefer an _ in the name, and not hide in a macro).\n\nIf someone can show a regression in swap_duplicate, then probably we should\nadd a hashlock for the swap_map entries alone (shorts being anatomic), so as\nto help the case of the single swap device too.\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" }, { "commit": "048c27fd72816b44e096997d1c6901c3abbfd45b", "tree": "159a00b71ce9db161a48e4fc07b212db455a2cf1", "parents": [ "52b7efdbe5f5696fc80338560a3fc51e0b0a993c" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:40 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:41 2005 -0700" }, "message": "[PATCH] swap: scan_swap_map latency breaks\n\nThe get_swap_page/scan_swap_map latency can be so bad that even those without\npreemption configured deserve relief: periodically cond_resched.\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" }, { "commit": "52b7efdbe5f5696fc80338560a3fc51e0b0a993c", "tree": "30162de9fc8fe3dddb6462f8ff82f1594067cadd", "parents": [ "7dfad4183bf9cd92f977caa3c12cc74f0eefc0e6" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:39 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:41 2005 -0700" }, "message": "[PATCH] swap: scan_swap_map drop swap_device_lock\n\nget_swap_page has often shown up on latency traces, doing lengthy scans while\nholding two spinlocks. swap_list_lock is already dropped, now scan_swap_map\ndrop swap_device_lock before scanning the swap_map.\n\nWhile scanning for an empty cluster, don\u0027t worry that racing tasks may\nallocate what was free and free what was allocated; but when allocating an\nentry, check it\u0027s still free after retaking the lock. Avoid dropping the lock\nin the expected common path. No barriers beyond the locks, just let the\ncookie crumble; highest_bit limit is volatile, but benign.\n\nGuard against swapoff: must check SWP_WRITEOK before allocating, must raise\nSWP_SCANNING reference count while in scan_swap_map, swapoff wait for that to\nfall - just use schedule_timeout, we don\u0027t want to burden scan_swap_map\nitself, and it\u0027s very unlikely that anyone can really still be in\nscan_swap_map once swapoff gets this far.\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" }, { "commit": "7dfad4183bf9cd92f977caa3c12cc74f0eefc0e6", "tree": "e11306e1e82acba1832f07fdfb3296c34cf6e934", "parents": [ "fb4f88dcabdc716c7c350e09cf4a38a419b007e1" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:38 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:41 2005 -0700" }, "message": "[PATCH] swap: scan_swap_map restyled\n\nRewrite scan_swap_map to allocate in just the same way as before (taking the\nnext free entry SWAPFILE_CLUSTER-1 times, then restarting at the lowest wholly\nempty cluster, falling back to lowest entry if none), but with a view towards\ndropping the lock in the next patch.\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" }, { "commit": "fb4f88dcabdc716c7c350e09cf4a38a419b007e1", "tree": "1a7806e3ac8bd45eded544763324c13c9f95c0e6", "parents": [ "89d09a2c80ea6baafb559b86d545fada05e14ab5" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:37 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:41 2005 -0700" }, "message": "[PATCH] swap: get_swap_page drop swap_list_lock\n\nRewrite get_swap_page to allocate in just the same sequence as before, but\nwithout holding swap_list_lock across its scan_swap_map. Decrement\nnr_swap_pages and update swap_list.next in advance, while still holding\nswap_list_lock. Skip full devices by testing highest_bit. Swapoff hold\nswap_device_lock as well as swap_list_lock to clear SWP_WRITEOK. Reduces lock\ncontention when there are parallel swap devices of the same priority.\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" }, { "commit": "89d09a2c80ea6baafb559b86d545fada05e14ab5", "tree": "90ff3c2a62c144b93c89b33d66583046f1a7efae", "parents": [ "6eb396dc4a9781c5e7951143ab56ce5710687ab3" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:36 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:41 2005 -0700" }, "message": "[PATCH] swap: freeing update swap_list.next\n\nThis makes negligible difference in practice: but swap_list.next should not be\nupdated to a higher prio in the general helper swap_info_get, but rather in\nswap_entry_free; and then only in the case when entry is actually freed.\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" }, { "commit": "6eb396dc4a9781c5e7951143ab56ce5710687ab3", "tree": "48b165c8934a0f3852344725fee060740dcdfa48", "parents": [ "53092a7402f227151a681b0c92ec8598c5618b1a" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:35 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:41 2005 -0700" }, "message": "[PATCH] swap: swap unsigned int consistency\n\nThe swap header\u0027s unsigned int last_page determines the range of swap pages,\nbut swap_info has been using int or unsigned long in some cases: use unsigned\nint throughout (except, in several places a local unsigned long is useful to\navoid overflows when adding).\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Jens Axboe \u003caxboe@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "53092a7402f227151a681b0c92ec8598c5618b1a", "tree": "ea482a18567c8b3b1778331ee3c4864e2f4dae6f", "parents": [ "11d31886dbcb61039ed3789e583d21c6e70960fd" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:34 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:40 2005 -0700" }, "message": "[PATCH] swap: show span of swap extents\n\nThe \"Adding %dk swap\" message shows the number of swap extents, as a guide to\nhow fragmented the swapfile may be. But a useful further guide is what total\nextent they span across (sometimes scarily large).\n\nAnd there\u0027s no need to keep nr_extents in swap_info: it\u0027s unused after the\ninitial message, so save a little space by keeping it on stack.\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" }, { "commit": "11d31886dbcb61039ed3789e583d21c6e70960fd", "tree": "ddaebfd35080a530a30c56587707c2c5ef452591", "parents": [ "4cd3bb10ff0b21b77b5a4cd13b4bd36694e054c4" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:34 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:40 2005 -0700" }, "message": "[PATCH] swap: swap extent list is ordered\n\nThere are several comments that swap\u0027s extent_list.prev points to the lowest\nextent: that\u0027s not so, it\u0027s extent_list.next which points to it, as you\u0027d\nexpect. And a couple of loops in add_swap_extent which go all the way through\nthe list, when they should just add to the other end.\n\nFix those up, and let map_swap_page search the list forwards: profiles shows\nit to be twice as quick that way - because prefetch works better on how the\nstructs are typically kmalloc\u0027ed? or because usually more is written to than\nread from swap, and swap is allocated ascendingly?\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" }, { "commit": "4cd3bb10ff0b21b77b5a4cd13b4bd36694e054c4", "tree": "e2a76a229b2c030a7d4aec1155e505fd4c087067", "parents": [ "e2244ec2efa4ee1edf391d0001d314933e2b2974" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:33 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:40 2005 -0700" }, "message": "[PATCH] swap: move destroy_swap_extents calls\n\nsys_swapon\u0027s call to destroy_swap_extents on failure is made after the final\nswap_list_unlock, which is faintly unsafe: another sys_swapon might already be\nsetting up that swap_info_struct. Calling it earlier, before taking\nswap_list_lock, is safe. sys_swapoff\u0027s call to destroy_swap_extents was safe,\nbut likewise move it earlier, before taking the locks (once try_to_unuse has\ncompleted, nothing can be needing the swap extents).\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" }, { "commit": "e2244ec2efa4ee1edf391d0001d314933e2b2974", "tree": "c9e43f9b6e11ce41d976025c6f9d94c273521132", "parents": [ "b0d9bcd4bb79a7834f8492f2ae5c2655a551f23d" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:32 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:40 2005 -0700" }, "message": "[PATCH] swap: correct swapfile nr_good_pages\n\nIf a regular swapfile lies on a filesystem whose blocksize is less than\nPAGE_SIZE, then setup_swap_extents may have to cut the number of usable swap\npages; but sys_swapon\u0027s nr_good_pages was not expecting that. Also,\nsetup_swap_extents takes no account of badpages listed in the swap header: not\nworth doing so, but ensure nr_badpages is 0 for a regular swapfile.\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" }, { "commit": "b0d9bcd4bb79a7834f8492f2ae5c2655a551f23d", "tree": "8978577cf4b132e08e5abc7101e934ffd3106d3c", "parents": [ "fd4fd5aac1282825195c6816ed40a2a6d42db5bf" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:31 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:40 2005 -0700" }, "message": "[PATCH] swap: update swapfile i_sem comment\n\nUpdate swap extents comment: nowadays we guard with S_SWAPFILE not i_sem.\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" }, { "commit": "c475a8ab625d567eacf5e30ec35d6d8704558062", "tree": "0971bef7b876f1b3eb160621fc2b61cb5313827b", "parents": [ "d296e9cd02c92e576ecce5344026a4df4353cdb2" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Tue Jun 21 17:15:12 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:21 2005 -0700" }, "message": "[PATCH] can_share_swap_page: use page_mapcount\n\nRemember that ironic get_user_pages race? when the raised page_count on a\npage swapped out led do_wp_page to decide that it had to copy on write, so\nsubstituted a different page into userspace. 2.6.7 onwards have Andrea\u0027s\nsolution, where try_to_unmap_one backs out if it finds page_count raised.\n\nWhich works, but is unsatisfying (rmap.c has no other page_count heuristics),\nand was found a few months ago to hang an intensive page migration test. A\nyear ago I was hesitant to engage page_mapcount, now it seems the right fix.\n\nSo remove the page_count hack from try_to_unmap_one; and use activate_page in\nunuse_mm when dropping lock, to replace its secondary effect of helping\nswapoff to make progress in that case.\n\nSimplify can_share_swap_page (now called only on anonymous pages) to check\npage_mapcount + page_swapcount \u003d\u003d 1: still needs the page lock to stabilize\ntheir (pessimistic) sum, but does not need swapper_space.tree_lock for that.\n\nIn do_swap_page, move swap_free and unlock_page below page_add_anon_rmap, to\nkeep sum on the high side, and correct when can_share_swap_page called.\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" }, { "commit": "ba32311eb73f624a85a5fc2e043cda8e076f86ef", "tree": "1baa53ef8f4b708ec1807ca3a267c713d00da266", "parents": [ "59afda786a58f2e8f74a48f2af90534d76d5338d" ], "author": { "name": "McMullan, Jason", "email": "jason.mcmullan@timesys.com", "time": "Mon May 16 21:53:40 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue May 17 07:59:18 2005 -0700" }, "message": "[PATCH] swapout oops fix\n\nFix OOPS when swapping on a device that doesn\u0027t have an unplug_io_fn defined\n(eg, ATA Over Ethernet)\n\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" } ] }