)]}' { "log": [ { "commit": "6ccfa806a9cfbbf1cd43d5b6aa47ef2c0eb518fd", "tree": "dd3f17e1aebc802b147627a4151add363f39b77c", "parents": [ "344c790e3821dac37eb742ddd0b611a300f78b9a" ], "author": { "name": "Hisashi Hifumi", "email": "hifumi.hisashi@oss.ntt.co.jp", "time": "Tue Sep 02 14:35:40 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Sep 02 19:21:37 2008 -0700" }, "message": "VFS: fix dio write returning EIO when try_to_release_page fails\n\nDio write returns EIO when try_to_release_page fails because bh is\nstill referenced.\n\nThe patch\n\n commit 3f31fddfa26b7594b44ff2b34f9a04ba409e0f91\n Author: Mingming Cao \u003ccmm@us.ibm.com\u003e\n Date: Fri Jul 25 01:46:22 2008 -0700\n\n jbd: fix race between free buffer and commit transaction\n\nwas merged into 2.6.27-rc1, but I noticed that this patch is not enough\nto fix the race.\n\nI did fsstress test heavily to 2.6.27-rc1, and found that dio write still\nsometimes got EIO through this test.\n\nThe patch above fixed race between freeing buffer(dio) and committing\ntransaction(jbd) but I discovered that there is another race, freeing\nbuffer(dio) and ext3/4_ordered_writepage.\n\n: background_writeout()\n -\u003ewrite_cache_pages()\n -\u003eext3_ordered_writepage()\n \t walk_page_buffers() -\u003e take a bh ref\n \t block_write_full_page() -\u003e unlock_page\n\t\t: \u003c- end_page_writeback\n : \u003c- race! (dio write-\u003etry_to_release_page fails)\n \t walk_page_buffers() -\u003erelease a bh ref\n\next3_ordered_writepage holds bh ref and does unlock_page remaining\ntaking a bh ref, so this causes the race and failure of\ntry_to_release_page.\n\nTo fix this race, I used the approach of falling back to buffered\nwrites if try_to_release_page() fails on a page.\n\n[akpm@linux-foundation.org: cleanups]\nSigned-off-by: Hisashi Hifumi \u003chifumi.hisashi@oss.ntt.co.jp\u003e\nCc: Chris Mason \u003cchris.mason@oracle.com\u003e\nCc: Jan Kara \u003cjack@suse.cz\u003e\nCc: Mingming Cao \u003ccmm@us.ibm.com\u003e\nCc: Zach Brown \u003czach.brown@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "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": "94ad374a0751f40d25e22e036c37f7263569d24c", "tree": "d1bbf5d64c4eaee7bfefae22ad87b96967187cc8", "parents": [ "0056e65f9e28d83ee1a3fb4f7d0041e838f03c34" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jul 30 14:45:12 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jul 30 14:50:18 2008 -0700" }, "message": "Fix off-by-one error in iov_iter_advance()\n\nThe iov_iter_advance() function would look at the iov-\u003eiov_len entry\neven though it might have iterated over the whole array, and iov was\npointing past the end. This would cause DEBUG_PAGEALLOC to trigger a\nkernel page fault if the allocation was at the end of a page, and the\nnext page was unallocated.\n\nThe quick fix is to just change the order of the tests: check that there\nis any iovec data left before we check the iov entry itself.\n\nThanks to Alexey Dobriyan for finding this case, and testing the fix.\n\nReported-and-tested-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: \u003cstable@kernel.org\u003e [2.6.25.x, 2.6.26.x]\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8ab22b9abb5c55413802e4adc9aa6223324547c3", "tree": "cff3319e1275e8a7c083d492889ec6bd0c7712d3", "parents": [ "d84a52f62f6a396ed77aa0052da74ca9e760b28a" ], "author": { "name": "Hisashi Hifumi", "email": "hifumi.hisashi@oss.ntt.co.jp", "time": "Mon Jul 28 15:46:36 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jul 28 16:30:21 2008 -0700" }, "message": "vfs: pagecache usage optimization for pagesize!\u003dblocksize\n\nWhen we read some part of a file through pagecache, if there is a\npagecache of corresponding index but this page is not uptodate, read IO\nis issued and this page will be uptodate.\n\nI think this is good for pagesize \u003d\u003d blocksize environment but there is\nroom for improvement on pagesize !\u003d blocksize environment. Because in\nthis case a page can have multiple buffers and even if a page is not\nuptodate, some buffers can be uptodate.\n\nSo I suggest that when all buffers which correspond to a part of a file\nthat we want to read are uptodate, use this pagecache and copy data from\nthis pagecache to user buffer even if a page is not uptodate. This can\nreduce read IO and improve system throughput.\n\nI wrote a benchmark program and got result number with this program.\n\nThis benchmark do:\n\n 1: mount and open a test file.\n\n 2: create a 512MB file.\n\n 3: close a file and umount.\n\n 4: mount and again open a test file.\n\n 5: pwrite randomly 300000 times on a test file. offset is aligned\n by IO size(1024bytes).\n\n 6: measure time of preading randomly 100000 times on a test file.\n\nThe result was:\n\t2.6.26\n 330 sec\n\n\t2.6.26-patched\n 226 sec\n\nArch:i386\nFilesystem:ext3\nBlocksize:1024 bytes\nMemory: 1GB\n\nOn ext3/4, a file is written through buffer/block. So random read/write\nmixed workloads or random read after random write workloads are optimized\nwith this patch under pagesize !\u003d blocksize environment. This test result\nshowed this.\n\nThe benchmark program is as follows:\n\n#include \u003cstdio.h\u003e\n#include \u003csys/types.h\u003e\n#include \u003csys/stat.h\u003e\n#include \u003cfcntl.h\u003e\n#include \u003cunistd.h\u003e\n#include \u003ctime.h\u003e\n#include \u003cstdlib.h\u003e\n#include \u003cstring.h\u003e\n#include \u003csys/mount.h\u003e\n\n#define LEN 1024\n#define LOOP 1024*512 /* 512MB */\n\nmain(void)\n{\n\tunsigned long i, offset, filesize;\n\tint fd;\n\tchar buf[LEN];\n\ttime_t t1, t2;\n\n\tif (mount(\"/dev/sda1\", \"/root/test1/\", \"ext3\", 0, 0) \u003c 0) {\n\t\tperror(\"cannot mount\\n\");\n\t\texit(1);\n\t}\n\tmemset(buf, 0, LEN);\n\tfd \u003d open(\"/root/test1/testfile\", O_CREAT|O_RDWR|O_TRUNC);\n\tif (fd \u003c 0) {\n\t\tperror(\"cannot open file\\n\");\n\t\texit(1);\n\t}\n\tfor (i \u003d 0; i \u003c LOOP; i++)\n\t\twrite(fd, buf, LEN);\n\tclose(fd);\n\tif (umount(\"/root/test1/\") \u003c 0) {\n\t\tperror(\"cannot umount\\n\");\n\t\texit(1);\n\t}\n\tif (mount(\"/dev/sda1\", \"/root/test1/\", \"ext3\", 0, 0) \u003c 0) {\n\t\tperror(\"cannot mount\\n\");\n\t\texit(1);\n\t}\n\tfd \u003d open(\"/root/test1/testfile\", O_RDWR);\n\tif (fd \u003c 0) {\n\t\tperror(\"cannot open file\\n\");\n\t\texit(1);\n\t}\n\n\tfilesize \u003d LEN * LOOP;\n\tfor (i \u003d 0; i \u003c 300000; i++){\n\t\toffset \u003d (random() % filesize) \u0026 (~(LEN - 1));\n\t\tpwrite(fd, buf, LEN, offset);\n\t}\n\tprintf(\"start test\\n\");\n\ttime(\u0026t1);\n\tfor (i \u003d 0; i \u003c 100000; i++){\n\t\toffset \u003d (random() % filesize) \u0026 (~(LEN - 1));\n\t\tpread(fd, buf, LEN, offset);\n\t}\n\ttime(\u0026t2);\n\tprintf(\"%ld sec\\n\", t2-t1);\n\tclose(fd);\n\tif (umount(\"/root/test1/\") \u003c 0) {\n\t\tperror(\"cannot umount\\n\");\n\t\texit(1);\n\t}\n}\n\nSigned-off-by: Hisashi Hifumi \u003chifumi.hisashi@oss.ntt.co.jp\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Jan Kara \u003cjack@ucw.cz\u003e\nCc: \u003clinux-ext4@vger.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": "2f1936b87783a3a56c9441b27b9ba7a747f11e8e", "tree": "024a0f3da74ba6365f209d03685133760146149b", "parents": [ "c82e42da8a6b2f3a85dc4d4278cb8238702f8f64" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Tue Jun 24 16:50:14 2008 +0200" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sat Jul 26 20:53:16 2008 -0400" }, "message": "[patch 3/5] vfs: change remove_suid() to file_remove_suid()\n\nAll calls to remove_suid() are made with a file pointer, because\n(similarly to file_update_time) it is called when the file is written.\n\nClean up callers by passing in a file instead of a dentry.\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\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": "a60637c85893e7191faaafa6a72e197c24386727", "tree": "fa3ec63f505e64d3b4a2be4efd9a5314ab5f6234", "parents": [ "e286781d5f2e9c846e012a39653a166e9d31777d" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Fri Jul 25 19:45:31 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jul 26 12:00:06 2008 -0700" }, "message": "mm: lockless pagecache\n\nCombine page_cache_get_speculative with lockless radix tree lookups to\nintroduce lockless page cache lookups (ie. no mapping-\u003etree_lock on the\nread-side).\n\nThe only atomicity changes this introduces is that the gang pagecache\nlookup functions now behave as if they are implemented with multiple\nfind_get_page calls, rather than operating on a snapshot of the pages. In\npractice, this atomicity guarantee is not used anyway, and it is to\nreplace individual lookups, so these semantics are natural.\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": "e286781d5f2e9c846e012a39653a166e9d31777d", "tree": "14958fe6d8f3e0459c96c68b3034ea2433ab85ac", "parents": [ "47feff2c8eefe85099f87c43d3096855f0085ca0" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Fri Jul 25 19:45:30 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jul 26 12:00:06 2008 -0700" }, "message": "mm: speculative page references\n\nIf we can be sure that elevating the page_count on a pagecache page will\npin it, we can speculatively run this operation, and subsequently check to\nsee if we hit the right page rather than relying on holding a lock or\notherwise pinning a reference to the page.\n\nThis can be done if get_page/put_page behaves consistently throughout the\nwhole tree (ie. if we \"get\" the page after it has been used for something\nelse, we must be able to free it with a put_page).\n\nActually, there is a period where the count behaves differently: when the\npage is free or if it is a constituent page of a compound page. We need\nan atomic_inc_not_zero operation to ensure we don\u0027t try to grab the page\nin either case.\n\nThis patch introduces the core locking protocol to the pagecache (ie.\nadds page_cache_get_speculative, and tweaks some update-side code to make\nit work).\n\nThanks to Hugh for pointing out an improvement to the algorithm setting\npage_count to zero when we have control of all references, in order to\nhold off speculative getters.\n\n[kamezawa.hiroyu@jp.fujitsu.com: fix migration_entry_wait()]\n[hugh@veritas.com: fix add_to_page_cache]\n[akpm@linux-foundation.org: repair a comment]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Jeff Garzik \u003cjeff@garzik.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: \"Paul E. McKenney\" \u003cpaulmck@us.ibm.com\u003e\nReviewed-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "69029cd550284e32de13d6dd2f77b723c8a0e444", "tree": "b57b87e5025b6c01722f39302cb98d0dfcd58940", "parents": [ "e8589cc189f96b87348ae83ea4db38eaac624135" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Fri Jul 25 01:47:14 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 25 10:53:37 2008 -0700" }, "message": "memcg: remove refcnt from page_cgroup\n\nmemcg: performance improvements\n\nPatch Description\n 1/5 ... remove refcnt fron page_cgroup patch (shmem handling is fixed)\n 2/5 ... swapcache handling patch\n 3/5 ... add helper function for shmem\u0027s memory reclaim patch\n 4/5 ... optimize by likely/unlikely ppatch\n 5/5 ... remove redundunt check patch (shmem handling is fixed.)\n\nUnix bench result.\n\n\u003d\u003d 2.6.26-rc2-mm1 + memory resource controller\nExecl Throughput 2915.4 lps (29.6 secs, 3 samples)\nC Compiler Throughput 1019.3 lpm (60.0 secs, 3 samples)\nShell Scripts (1 concurrent) 5796.0 lpm (60.0 secs, 3 samples)\nShell Scripts (8 concurrent) 1097.7 lpm (60.0 secs, 3 samples)\nShell Scripts (16 concurrent) 565.3 lpm (60.0 secs, 3 samples)\nFile Read 1024 bufsize 2000 maxblocks 1022128.0 KBps (30.0 secs, 3 samples)\nFile Write 1024 bufsize 2000 maxblocks 544057.0 KBps (30.0 secs, 3 samples)\nFile Copy 1024 bufsize 2000 maxblocks 346481.0 KBps (30.0 secs, 3 samples)\nFile Read 256 bufsize 500 maxblocks 319325.0 KBps (30.0 secs, 3 samples)\nFile Write 256 bufsize 500 maxblocks 148788.0 KBps (30.0 secs, 3 samples)\nFile Copy 256 bufsize 500 maxblocks 99051.0 KBps (30.0 secs, 3 samples)\nFile Read 4096 bufsize 8000 maxblocks 2058917.0 KBps (30.0 secs, 3 samples)\nFile Write 4096 bufsize 8000 maxblocks 1606109.0 KBps (30.0 secs, 3 samples)\nFile Copy 4096 bufsize 8000 maxblocks 854789.0 KBps (30.0 secs, 3 samples)\nDc: sqrt(2) to 99 decimal places 126145.2 lpm (30.0 secs, 3 samples)\n\n INDEX VALUES\nTEST BASELINE RESULT INDEX\n\nExecl Throughput 43.0 2915.4 678.0\nFile Copy 1024 bufsize 2000 maxblocks 3960.0 346481.0 875.0\nFile Copy 256 bufsize 500 maxblocks 1655.0 99051.0 598.5\nFile Copy 4096 bufsize 8000 maxblocks 5800.0 854789.0 1473.8\nShell Scripts (8 concurrent) 6.0 1097.7 1829.5\n \u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n FINAL SCORE 991.3\n\n\u003d\u003d 2.6.26-rc2-mm1 + this set \u003d\u003d\nExecl Throughput 3012.9 lps (29.9 secs, 3 samples)\nC Compiler Throughput 981.0 lpm (60.0 secs, 3 samples)\nShell Scripts (1 concurrent) 5872.0 lpm (60.0 secs, 3 samples)\nShell Scripts (8 concurrent) 1120.3 lpm (60.0 secs, 3 samples)\nShell Scripts (16 concurrent) 578.0 lpm (60.0 secs, 3 samples)\nFile Read 1024 bufsize 2000 maxblocks 1003993.0 KBps (30.0 secs, 3 samples)\nFile Write 1024 bufsize 2000 maxblocks 550452.0 KBps (30.0 secs, 3 samples)\nFile Copy 1024 bufsize 2000 maxblocks 347159.0 KBps (30.0 secs, 3 samples)\nFile Read 256 bufsize 500 maxblocks 314644.0 KBps (30.0 secs, 3 samples)\nFile Write 256 bufsize 500 maxblocks 151852.0 KBps (30.0 secs, 3 samples)\nFile Copy 256 bufsize 500 maxblocks 101000.0 KBps (30.0 secs, 3 samples)\nFile Read 4096 bufsize 8000 maxblocks 2033256.0 KBps (30.0 secs, 3 samples)\nFile Write 4096 bufsize 8000 maxblocks 1611814.0 KBps (30.0 secs, 3 samples)\nFile Copy 4096 bufsize 8000 maxblocks 847979.0 KBps (30.0 secs, 3 samples)\nDc: sqrt(2) to 99 decimal places 128148.7 lpm (30.0 secs, 3 samples)\n\n INDEX VALUES\nTEST BASELINE RESULT INDEX\n\nExecl Throughput 43.0 3012.9 700.7\nFile Copy 1024 bufsize 2000 maxblocks 3960.0 347159.0 876.7\nFile Copy 256 bufsize 500 maxblocks 1655.0 101000.0 610.3\nFile Copy 4096 bufsize 8000 maxblocks 5800.0 847979.0 1462.0\nShell Scripts (8 concurrent) 6.0 1120.3 1867.2\n \u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n FINAL SCORE 1004.6\n\nThis patch:\n\nRemove refcnt from page_cgroup().\n\nAfter this,\n\n * A page is charged only when !page_mapped() \u0026\u0026 no page_cgroup is assigned.\n\t* Anon page is newly mapped.\n\t* File page is added to mapping-\u003etree.\n\n * A page is uncharged only when\n\t* Anon page is fully unmapped.\n\t* File page is removed from LRU.\n\nThere is no change in behavior from user\u0027s view.\n\nThis patch also removes unnecessary calls in rmap.c which was used only for\nrefcnt mangement.\n\n[akpm@linux-foundation.org: fix warning]\n[hugh@veritas.com: fix shmem_unuse_inode charging]\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: YAMAMOTO Takashi \u003cyamamoto@valinux.co.jp\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3f31fddfa26b7594b44ff2b34f9a04ba409e0f91", "tree": "88994baf22f65dc4da0bef17ce61eda09c59db2a", "parents": [ "9ebfbe9f926553eabc21b4400918d1216b27ed0c" ], "author": { "name": "Mingming Cao", "email": "cmm@us.ibm.com", "time": "Fri Jul 25 01:46:22 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 25 10:53:32 2008 -0700" }, "message": "jbd: fix race between free buffer and commit transaction\n\njournal_try_to_free_buffers() could race with jbd commit transaction when\nthe later is holding the buffer reference while waiting for the data\nbuffer to flush to disk. If the caller of journal_try_to_free_buffers()\nrequest tries hard to release the buffers, it will treat the failure as\nerror and return back to the caller. We have seen the directo IO failed\ndue to this race. Some of the caller of releasepage() also expecting the\nbuffer to be dropped when passed with GFP_KERNEL mask to the\nreleasepage()-\u003ejournal_try_to_free_buffers().\n\nWith this patch, if the caller is passing the __GFP_WAIT and __GFP_FS to\nindicating this call could wait, in case of try_to_free_buffers() failed,\nlet\u0027s waiting for journal_commit_transaction() to finish commit the\ncurrent committing transaction, then try to free those buffers again.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Mingming Cao \u003ccmm@us.ibm.com\u003e\nReviewed-by: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nAcked-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "11fa977ecde652ab324dd79c179deb52e82a8df1", "tree": "5842dab40a3754f3f34223b50f9dcfa5dd67dfa0", "parents": [ "a858f7b2e9bb4eb665176dde5cf32eeaaf90f153" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Wed Jul 23 21:27:34 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jul 24 10:47:16 2008 -0700" }, "message": "generic_file_aio_read() cleanups\n\nAs akpm points out, there\u0027s really no need for generic_file_aio_read to\nmake a special case of count 0: just loop through nr_segs doing nothing.\nAnd as Harvey Harrison points out, there\u0027s no need to reset retval to 0\nwhere it\u0027s already 0.\n\nSetting count (or ocount) to 0 before calling generic_segment_checks is\nunnecessary too; but reluctantly I\u0027ll leave that removal to someone with a\nwider range of gcc versions to hand - 4.1.2 and 4.2.1 don\u0027t warn about it,\nbut perhaps others do - I forget which are the warniest versions.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nTested-by: Lawrence Greenfield \u003cleg@google.com\u003e\nCc: Christoph Rohland \u003chans-christoph.rohland@sap.com\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Zach Brown \u003czach.brown@oracle.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a969e903a944f69309ee5cc9e7c7b08310d1151e", "tree": "fa8a26a8e9b870b3c4f9a876070de03e4901c579", "parents": [ "75353bed36cfbbfb55bbde0896bbf5a02d9ba355" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Wed Jul 23 21:27:04 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jul 24 10:47:14 2008 -0700" }, "message": "kill generic_file_direct_IO()\n\ngeneric_file_direct_IO is a common helper around the invocation of\n-\u003edirect_IO. But there\u0027s almost nothing shared between the read and write\nside, so we\u0027re better off without this helper.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f4c0a0fdfae708f7aa438c27a380ed4071294e11", "tree": "f729aa07b21c0d40c3c2c254b1a99c5b5879b92a", "parents": [ "9ddfc3dc75b5cc55ff3cfa586e962d252f1db9d3" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Fri Jul 11 19:27:31 2008 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Fri Jul 11 19:27:31 2008 -0400" }, "message": "vfs: export filemap_fdatawrite_range()\n\nMake filemap_fdatawrite_range() function public, so that it can later\nbe used in ordered mode rewrite by JBD/JBD2.\n\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\n" }, { "commit": "3ef0f720e47e895b613b0305eb0a483e3ec11f23", "tree": "e696a950d76c90199661515e1068fc00102a15bf", "parents": [ "3b73a223661ed137c5d3d2635f954382e94f5a43" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Wed May 14 16:05:37 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed May 14 19:11:13 2008 -0700" }, "message": "mm: fix infinite loop in filemap_fault\n\nfilemap_fault will go into an infinite loop if -\u003ereadpage() fails\nasynchronously.\n\nAFAICS the bug was introduced by this commit, which removed the wait after the\nfinal readpage:\n\n commit d00806b183152af6d24f46f0c33f14162ca1262a\n Author: Nick Piggin \u003cnpiggin@suse.de\u003e\n Date: Thu Jul 19 01:46:57 2007 -0700\n\n mm: fix fault vs invalidate race for linear mappings\n\nFix by reintroducing the wait_on_page_locked() after -\u003ereadpage() to make sure\nthe page is up-to-date before jumping back to the beginning of the function.\n\nI\u0027ve noticed this while testing nfs exporting on fuse. The patch\nfixes it.\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7f3d4ee108c184ab215036051087aaaaa8de7661", "tree": "373f4f928f0687ca84478964b43c26e3ec9cec70", "parents": [ "07416d29bcf608257f1e5280642dcbe0021518a3" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Wed May 07 09:22:39 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Wed May 07 09:29:00 2008 +0200" }, "message": "vfs: splice remove_suid() cleanup\n\ngeneric_file_splice_write() duplicates remove_suid() just because it\ndoesn\u0027t hold i_mutex. But it grabs i_mutex inside splice_from_pipe()\nanyway, so this is rather pointless.\n\nMove locking to generic_file_splice_write() and call remove_suid() and\n__splice_from_pipe() instead.\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "ac6aadb24b7d4f0e54246732e221c102073412bf", "tree": "1936c3e847fca977b8c0d650416c66655f7633ad", "parents": [ "f05111f50105ac479a008cf85749cf9c956453ea" ], "author": { "name": "Miklos Szeredi", "email": "mszeredi@suse.cz", "time": "Mon Apr 28 02:12:38 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:20 2008 -0700" }, "message": "mm: rotate_reclaimable_page() cleanup\n\nClean up messy conditional calling of test_clear_page_writeback() from both\nrotate_reclaimable_page() and end_page_writeback().\n\nThe only user of rotate_reclaimable_page() is end_page_writeback() so this is\nOK.\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7682486b3ee06f800d5b11033371c7c5e92e3057", "tree": "d0c2eda3204b085fc63200c787b2cf04f0298729", "parents": [ "6cb2a21049b8990df4576c5fce4d48d0206c22d5" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Wed Mar 19 17:00:40 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 19 18:53:35 2008 -0700" }, "message": "mm: fix various kernel-doc comments\n\nFix various kernel-doc notation in mm/:\n\nfilemap.c: add function short description; convert 2 to kernel-doc\nfremap.c: change parameter \u0027prot\u0027 to @prot\npagewalk.c: change \"-\" in function parameters to \":\"\nslab.c: fix short description of kmem_ptr_validate()\nswap.c: fix description \u0026 parameters of put_pages_list()\nswap_state.c: fix function parameters\nvmalloc.c: change \"@returns\" to \"Returns:\" since that is not a parameter\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f7009264c519603b8ec67c881bd368a56703cfc9", "tree": "163c2fa590e3de5c9084f1cba5c1c2815dbd2dde", "parents": [ "21bbb39c376ce6beeeb549d155f0d53dc76ed000" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Mon Mar 10 11:43:59 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Mar 10 18:01:20 2008 -0700" }, "message": "iov_iter_advance() fix\n\niov_iter_advance() skips over zero-length iovecs, however it does not properly\nterminate at the end of the iovec array. Fix this by checking against\ni-\u003ecount before we skip a zero-length iov.\n\nThe bug was reproduced with a test program that continually randomly creates\niovs to writev. The fix was also verified with the same program and also it\ncould verify that the correct data was contained in the file after each\nwritev.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nTested-by: \"Kevin Coffman\" \u003ckwc@citi.umich.edu\u003e\nCc: \"Alexey Dobriyan\" \u003cadobriyan@gmail.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": "3426fadfa20454f124203768857e8f18ab4909bd", "tree": "2f65a70ca42a9f02a4e2eebc816300dbafe0d749", "parents": [ "bf5a25e1fff88a1066e20cc7263329405e4939f6" ], "author": { "name": "Jesper Juhl", "email": "jesper.juhl@gmail.com", "time": "Mon Mar 10 01:12:08 2008 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Mar 09 22:21:52 2008 -0700" }, "message": "Do not include linux/backing-dev.h twice\n\nDon\u0027t include linux/backing-dev.h twice in mm/filemap.c, it\u0027s pointless.\n\nSigned-off-by: Jesper Juhl \u003cjesper.juhl@gmail.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b5606c2d4447e80b1d72406af4e78af1eda611d4", "tree": "ebdaa1a0aae4279b84af82651c16a8777f76bfe4", "parents": [ "fbf6bfca76d50abef478ba902b8597ecbadfd390" ], "author": { "name": "Harvey Harrison", "email": "harvey.harrison@gmail.com", "time": "Wed Feb 13 15:03:16 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Feb 13 16:21:18 2008 -0800" }, "message": "remove final fastcall users\n\nfastcall always expands to empty, remove it.\n\nSigned-off-by: Harvey Harrison \u003charvey.harrison@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": "36e789144267105e0b3f2b9bca7db3184fce50dc", "tree": "cff6b92b2d54cf5e88db3f0fd71071a6b80b06f5", "parents": [ "7437a51b30743ff1488981a393fc9e67894bf757" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Fri Feb 08 04:21:24 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:39 2008 -0800" }, "message": "kill do_generic_mapping_read\n\ndo_generic_mapping_read was used by gfs2 for internals reads, but this use\nof the interface was rather suboptimal (as was the whole interface) and has\nbeen replaced by an internal helper now. This patch kills\ndo_generic_mapping_read and surrounding damage in preparation of additional\ncleanups for the buffered read path.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2004dc8eec1b4f0692b3be87ea80c70faa44d619", "tree": "9458abfdecf29c08a33cccb845eb273c70ad49c5", "parents": [ "476aed3870b26735c4fcfdaa95420fa9e1de5119" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Fri Feb 08 04:20:11 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:32 2008 -0800" }, "message": "Use pgoff_t instead of unsigned long\n\nConvert variables containing page indexes to pgoff_t.\n\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4c6bc8dd5a0932f2c0b30a5f0a124464b7f614d0", "tree": "90fda3b23ed1adb780ef063df4559ca929e6378a", "parents": [ "35c754d79f4da80d5e8972f6403dd26f7962fd88" ], "author": { "name": "Badari Pulavarty", "email": "pbadari@gmail.com", "time": "Thu Feb 07 00:14:05 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Feb 07 08:42:19 2008 -0800" }, "message": "mem-controller gfp-mask fix\n\nNeed to strip __GFP_HIGHMEM flag while passing to mem_container_cache_charge().\n\nSigned-off-by: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "35c754d79f4da80d5e8972f6403dd26f7962fd88", "tree": "5e497fd0ac832b5c832044d0267170d7144e1a0e", "parents": [ "044d66c1d2b1c5aa50b4d6d68c21c6c93dd678da" ], "author": { "name": "Balbir Singh", "email": "balbir@linux.vnet.ibm.com", "time": "Thu Feb 07 00:14:05 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Feb 07 08:42:19 2008 -0800" }, "message": "memory controller BUG_ON()\n\nMove mem_controller_cache_charge() above radix_tree_preload().\nradix_tree_preload() disables preemption, even though the gfp_mask passed\ncontains __GFP_WAIT, we cannot really do __GFP_WAIT allocations, thus we\nhit a BUG_ON() in kmem_cache_alloc().\n\nThis patch moves mem_controller_cache_charge() to above radix_tree_preload()\nfor cache charging.\n\nSigned-off-by: Balbir Singh \u003cbalbir@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": "8697d33194faae6fdd6b2e799f6308aa00cfdf67", "tree": "edf6b3e4698b80aac6f1d1f2b9e5698ce8dfa6e5", "parents": [ "c7ba5c9e8176704bfac0729875fa62798037584d" ], "author": { "name": "Balbir Singh", "email": "balbir@linux.vnet.ibm.com", "time": "Thu Feb 07 00:13:59 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Feb 07 08:42:19 2008 -0800" }, "message": "Memory controller: add switch to control what type of pages to limit\n\nChoose if we want cached pages to be accounted or not. By default both are\naccounted for. A new set of tunables are added.\n\necho -n 1 \u003e mem_control_type\n\nswitches the accounting to account for only mapped pages\n\necho -n 3 \u003e mem_control_type\n\nswitches the behaviour back\n\n[bunk@kernel.org: mm/memcontrol.c: clenups]\n[akpm@linux-foundation.org: fix sparc32 build]\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: Adrian Bunk \u003cbunk@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": "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": "920c7a5d0c94b8ce740f1d76fa06422f2a95a757", "tree": "74ab4b9b5a6f4279b9b9d2a463c6700546ba0011", "parents": [ "1e548deb5d1630ca14ba04da04e3b6b3766178c7" ], "author": { "name": "Harvey Harrison", "email": "harvey.harrison@gmail.com", "time": "Mon Feb 04 22:29:26 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:18 2008 -0800" }, "message": "mm: remove fastcall from mm/\n\nfastcall is always defined to be empty, remove it\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Harvey Harrison \u003charvey.harrison@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": "e2848a0efedef4dad52d1334d37f8719cd6268fd", "tree": "f5d2b600b1275793e7c490f34ae9ec902af138b5", "parents": [ "e31d9eb5c17ae3b80f9e9403f8a5eaf6dba879c9" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Mon Feb 04 22:29:10 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:17 2008 -0800" }, "message": "radix-tree: avoid atomic allocations for preloaded insertions\n\nMost pagecache (and some other) radix tree insertions have the great\nopportunity to preallocate a few nodes with relaxed gfp flags. But the\npreallocation is squandered when it comes time to allocate a node, we\ndefault to first attempting a GFP_ATOMIC allocation -- that doesn\u0027t\nnormally fail, but it can eat into atomic memory reserves that we don\u0027t\nneed to be using.\n\nAnother upshot of this is that it removes the sometimes highly contended\nzone-\u003elock from underneath tree_lock. Pagecache insertions are always\nperformed with a radix tree preload, and after this change, such a\nsituation will never fall back to kmem_cache_alloc within\nradix_tree_node_alloc.\n\nDavid Miller reports seeing this allocation fail on a highly threaded\nsparc64 system:\n\n[527319.459981] dd: page allocation failure. order:0, mode:0x20\n[527319.460403] Call Trace:\n[527319.460568] [00000000004b71e0] __slab_alloc+0x1b0/0x6a8\n[527319.460636] [00000000004b7bbc] kmem_cache_alloc+0x4c/0xa8\n[527319.460698] [000000000055309c] radix_tree_node_alloc+0x20/0x90\n[527319.460763] [0000000000553238] radix_tree_insert+0x12c/0x260\n[527319.460830] [0000000000495cd0] add_to_page_cache+0x38/0xb0\n[527319.460893] [00000000004e4794] mpage_readpages+0x6c/0x134\n[527319.460955] [000000000049c7fc] __do_page_cache_readahead+0x170/0x280\n[527319.461028] [000000000049cc88] ondemand_readahead+0x208/0x214\n[527319.461094] [0000000000496018] do_generic_mapping_read+0xe8/0x428\n[527319.461152] [0000000000497948] generic_file_aio_read+0x108/0x170\n[527319.461217] [00000000004badac] do_sync_read+0x88/0xd0\n[527319.461292] [00000000004bb5cc] vfs_read+0x78/0x10c\n[527319.461361] [00000000004bb920] sys_read+0x34/0x60\n[527319.461424] [0000000000406294] linux_sparc_syscall32+0x3c/0x40\n\nThe calltrace is significant: __do_page_cache_readahead allocates a number\nof pages with GFP_KERNEL, and hence it should have reclaimed sufficient\nmemory to satisfy GFP_ATOMIC allocations. However after the list of pages\ngoes to mpage_readpages, there can be significant intervals (including disk\nIO) before all the pages are inserted into the radix-tree. So the reserves\ncan easily be depleted at that point. The patch is confirmed to fix the\nproblem.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "124d3b7041f9a0ca7c43a6293e1cae4576c32fd5", "tree": "9b92dd8f99c10ae0a0931ce71f3e9a20b32b167b", "parents": [ "6598b60fd56ba5e915a001cc4e307880a94d19ae" ], "author": { "name": "Nick Piggin", "email": "nickpiggin@yahoo.com.au", "time": "Sat Feb 02 15:01:17 2008 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Feb 03 07:55:39 2008 +1100" }, "message": "fix writev regression: pan hanging unkillable and un-straceable\n\nFrederik Himpe reported an unkillable and un-straceable pan process.\n\nZero length iovecs can go into an infinite loop in writev, because the\niovec iterator does not always advance over them.\n\nThe sequence required to trigger this is not trivial. I think it\nrequires that a zero-length iovec be followed by a non-zero-length iovec\nwhich causes a pagefault in the atomic usercopy. This causes the writev\ncode to drop back into single-segment copy mode, which then tries to\ncopy the 0 bytes of the zero-length iovec; a zero length copy looks like\na failure though, so it loops.\n\nPut a test into iov_iter_advance to catch zero-length iovecs. We could\njust put the test in the fallback path, but I feel it is more robust to\nskip over zero-length iovecs throughout the code (iovec iterator may be\nused in filesystems too, so it should be robust).\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "75659ca0c10992dcb39258518368a0f6f56e935d", "tree": "5d014ceb2f10158061a23d0d976f9a613d85e659", "parents": [ "fbdde7bd274d74729954190f99afcb1e3d9bbfba", "2dfe485a2c8afa54cb069fcf48476f6c90ea3fdf" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Feb 01 11:45:47 2008 +1100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Feb 01 11:45:47 2008 +1100" }, "message": "Merge branch \u0027task_killable\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc\n\n* \u0027task_killable\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc: (22 commits)\n Remove commented-out code copied from NFS\n NFS: Switch from intr mount option to TASK_KILLABLE\n Add wait_for_completion_killable\n Add wait_event_killable\n Add schedule_timeout_killable\n Use mutex_lock_killable in vfs_readdir\n Add mutex_lock_killable\n Use lock_page_killable\n Add lock_page_killable\n Add fatal_signal_pending\n Add TASK_WAKEKILL\n exit: Use task_is_*\n signal: Use task_is_*\n sched: Use task_contributes_to_load, TASK_ALL and TASK_NORMAL\n ptrace: Use task_is_*\n power: Use task_is_*\n wait: Use TASK_NORMAL\n proc/base.c: Use task_is_*\n proc/array.c: Use TASK_REPORT\n perfmon: Use task_is_*\n ...\n\nFixed up conflicts in NFS/sunrpc manually..\n" }, { "commit": "3a6927906f1b2adf5a31b789322d32eb8559ada0", "tree": "ef5b9dce5fd1b27be027fcff0a749547e9319ff0", "parents": [ "3e3b3916a9c5c28a16528585478de19fea59816b" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Dec 19 14:05:13 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Dec 19 14:05:13 2007 -0800" }, "message": "Do dirty page accounting when removing a page from the page cache\n\nKrzysztof Oledzki noticed a dirty page accounting leak on some of his\nmachines, causing the machine to eventually lock up when the kernel\ndecided that there was too much dirty data, but nobody could actually\nwrite anything out to fix it.\n\nThe culprit turns out to be filesystems (cough ext3 with data\u003djournal\ncough) that re-dirty the page when the \"-\u003einvalidatepage()\" callback is\ncalled.\n\nFix it up by doing a final dirty page accounting check when we actually\nremove the page from the page cache.\n\nThis fixes bugzilla entry 9182:\n\n\thttp://bugzilla.kernel.org/show_bug.cgi?id\u003d9182\n\nTested-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nTested-by: Krzysztof Oledzki \u003colel@ans.pl\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0b94e97a25d9b06ef17fca8da23169200bead1e2", "tree": "4f7d920d03e9532d93921831efe704a4b645a3b4", "parents": [ "2687a3569e40b1302f96698bcd6329aeb0ce3dd2" ], "author": { "name": "Matthew Wilcox", "email": "matthew@wil.cx", "time": "Thu Dec 06 11:19:57 2007 -0500" }, "committer": { "name": "Matthew Wilcox", "email": "willy@linux.intel.com", "time": "Thu Dec 06 17:35:48 2007 -0500" }, "message": "Use lock_page_killable\n\nReplacing lock_page with lock_page_killable in do_generic_mapping_read()\nallows us to kill `cat\u0027 of a file on an NFS-mounted filesystem\n\nSigned-off-by: Matthew Wilcox \u003cwilly@linux.intel.com\u003e\n" }, { "commit": "2687a3569e40b1302f96698bcd6329aeb0ce3dd2", "tree": "7bb5e1ffd807ef94b145f6829bf4326a98b8fd99", "parents": [ "f776d12dd16da1b0cd55a1240002c1b31f315d5d" ], "author": { "name": "Matthew Wilcox", "email": "matthew@wil.cx", "time": "Thu Dec 06 11:18:49 2007 -0500" }, "committer": { "name": "Matthew Wilcox", "email": "willy@linux.intel.com", "time": "Thu Dec 06 17:35:41 2007 -0500" }, "message": "Add lock_page_killable\n\nThis routine is like lock_page, but can be interrupted by a fatal signal\n\nSigned-off-by: Matthew Wilcox \u003cwilly@linux.intel.com\u003e\n" }, { "commit": "5307cc1aa53850f017c8053db034cf950b670ac9", "tree": "6fd2ff3fe382ba1aac5e8b6c703268200a80ed40", "parents": [ "bb374b7b938f73666c403b201b3dd48ec9fe118a" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 31 09:19:46 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 31 09:19:46 2007 -0700" }, "message": "Remove broken ptrace() special-case code from file mapping\n\nThe kernel has for random historical reasons allowed ptrace() accesses\nto access (and insert) pages into the page cache above the size of the\nfile.\n\nHowever, Nick broke that by mistake when doing the new fault handling in\ncommit 54cb8821de07f2ffcd28c380ce9b93d5784b40d7 (\"mm: merge populate and\nnopage into fault (fixes nonlinear)\". The breakage caused a hang with\ngdb when trying to access the invalid page.\n\nThe ptrace \"feature\" really isn\u0027t worth resurrecting, since it really is\nwrong both from a portability _and_ from an internal page cache validity\nstandpoint. So this removes those old broken remnants, and fixes the\nptrace() hang in the process.\n\nNoticed and bisected by Duane Griffin, who also supplied a test-case\n(quoth Nick: \"Well that\u0027s probably the best bug report I\u0027ve ever had,\nthanks Duane!\").\n\nCc: Duane Griffin \u003cduaneg@dghda.com\u003e\nAcked-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bdb76ef5a4bc8676a81034a443f1eda450b4babb", "tree": "b4ec8736e6d4bed26f96c94d5c7c8eec0896fcd0", "parents": [ "e58b7dab272ecee09cd7bafb89d6b224cd17bbe3" ], "author": { "name": "Zach Brown", "email": "zach.brown@oracle.com", "time": "Tue Oct 30 11:45:46 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 30 12:14:06 2007 -0700" }, "message": "dio: fix cache invalidation after sync writes\n\nCommit commit 65b8291c4000e5f38fc94fb2ca0cb7e8683c8a1b (\"dio: invalidate\nclean pages before dio write\") introduced a bug which stopped dio from\never invalidating the page cache after writes. It still invalidated it\nbefore writes so most users were fine.\n\nKarl Schendel reported ( http://lkml.org/lkml/2007/10/26/481 ) hitting\nthis bug when he had a buffered reader immediately reading file data\nafter an O_DIRECT wirter had written the data. The kernel issued\nread-ahead beyond the position of the reader which overlapped with the\nO_DIRECT writer. The failure to invalidate after writes caused the\nreader to see stale data from the read-ahead.\n\nThe following patch is originally from Karl. The following commentary\nis his:\n\n\tThe below 3rd try takes on your suggestion of just invalidating\n\tno matter what the retval from the direct_IO call. I ran it\n\tthru the test-case several times and it has worked every time.\n\tThe post-invalidate is probably still too early for async-directio,\n\tbut I don\u0027t have a testcase for that; just sync. And, this\n\twon\u0027t be any worse in the async case.\n\nI added a test to the aio-dio-regress repository which mimics Karl\u0027s IO\npattern. It verifed the bad behaviour and that the patch fixed it. I\nagree with Karl, this still doesn\u0027t help the case where a buffered\nreader follows an AIO O_DIRECT writer. That will require a bit more\nwork.\n\nThis gives up on the idea of returning EIO to indicate to userspace that\nstale data remains if the invalidation failed.\n\nSigned-off-by: Zach Brown \u003czach.brown@oracle.com\u003e\nCc: Karl Schendel \u003ckschendel@datallegro.com\u003e\nCc: Benjamin LaHaise \u003cbcrl@kvack.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Leonid Ananiev \u003cleonid.i.ananiev@linux.intel.com\u003e\nCc: Chris Mason \u003cchris.mason@oracle.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3a424f2d56613acfb9e583ec9c85a2be3e3af028", "tree": "6d01585f65282ed99e422345946c2692f19d96f4", "parents": [ "adb4ddbbfb90c302e78da68b3f015588ca45d7f3" ], "author": { "name": "Emil Medve", "email": "Emilian.Medve@Freescale.com", "time": "Wed Oct 24 14:18:32 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Oct 29 11:33:06 2007 +0100" }, "message": "Fix a build error when BLOCK\u003dn\n\nmm/filemap.c: In function \u0027__filemap_fdatawrite_range\u0027:\nmm/filemap.c:200: error: implicit declaration of function\n\u0027mapping_cap_writeback_dirty\u0027\n\nThis happens when we don\u0027t use/have any block devices and a NFS root\nfilesystem is used.\n\nmapping_cap_writeback_dirty() is defined in linux/backing-dev.h which\nused to be provided in mm/filemap.c by linux/blkdev.h until commit\nf5ff8422bbdd59f8c1f699df248e1b7a11073027 (Fix warnings with\n!CONFIG_BLOCK).\n\nSigned-off-by: Emil Medve \u003cEmilian.Medve@Freescale.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "8f731f7d83d6c6a3eeb32cce79bfcddbf7fac8cc", "tree": "706de5d8801259311a7a3b3987bc3b6e6511637d", "parents": [ "cb680c1be62e9898fc2ca2a89d9fdba7c84a5c81" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Thu Oct 18 23:39:28 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Oct 19 11:53:35 2007 -0700" }, "message": "kernel-api docbook: fix content problems\n\nFix kernel-api docbook contents problems.\n\ndocproc: linux-2.6.23-git13/include/asm-x86/unaligned_32.h: No such file or directory\nWarning(linux-2.6.23-git13//include/linux/list.h:482): bad line: \t\t\tof list entry\nWarning(linux-2.6.23-git13//mm/filemap.c:864): No description found for parameter \u0027ra\u0027\nWarning(linux-2.6.23-git13//block/ll_rw_blk.c:3760): No description found for parameter \u0027req\u0027\nWarning(linux-2.6.23-git13//include/linux/input.h:1077): No description found for parameter \u0027private\u0027\nWarning(linux-2.6.23-git13//include/linux/input.h:1077): No description found for parameter \u0027cdev\u0027\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nCc: WU Fengguang \u003cwfg@mail.ustc.edu.cn\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "53253383fde9e41bc07ad4d99f1c8b537fef71d6", "tree": "69154c2bbd3ea63ed2396b2bb2e9493b2614aa91", "parents": [ "a57793651ff1a09ef18bade998632435ca2dc13f" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Oct 18 14:47:32 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Oct 18 14:47:32 2007 -0700" }, "message": "Include \u003clinux/backing-dev.h\u003e in mm/filemap.c\n\nIt gets it indirectly from blkdev.h when CONFIG_BLOCK is enabled, but it\nneeds it unconditionally for the definition of mapping_cap_writeback_dirty.\n\nNoticed and bisected down to 4af3c9cc4fad54c3627e9afebf905aafde5690ed\n(\"Drop some headers from mm.h\") by Avuton Olrich.\n\nCc: Avuton Olrich \u003cavuton@gmail.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b53767719b6cd8789392ea3e7e2eb7b8906898f0", "tree": "a0279dc93c79b94d3865b0f19f6b7b353e20608c", "parents": [ "57c521ce6125e15e99e56c902cb8da96bee7b36d" ], "author": { "name": "Serge E. Hallyn", "email": "serue@us.ibm.com", "time": "Tue Oct 16 23:31:36 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:43:07 2007 -0700" }, "message": "Implement file posix capabilities\n\nImplement file posix capabilities. This allows programs to be given a\nsubset of root\u0027s powers regardless of who runs them, without having to use\nsetuid and giving the binary all of root\u0027s powers.\n\nThis version works with Kaigai Kohei\u0027s userspace tools, found at\nhttp://www.kaigai.gr.jp/index.php. For more information on how to use this\npatch, Chris Friedhoff has posted a nice page at\nhttp://www.friedhoff.org/fscaps.html.\n\nChangelog:\n\tNov 27:\n\tIncorporate fixes from Andrew Morton\n\t(security-introduce-file-caps-tweaks and\n\tsecurity-introduce-file-caps-warning-fix)\n\tFix Kconfig dependency.\n\tFix change signaling behavior when file caps are not compiled in.\n\n\tNov 13:\n\tIntegrate comments from Alexey: Remove CONFIG_ ifdef from\n\tcapability.h, and use %zd for printing a size_t.\n\n\tNov 13:\n\tFix endianness warnings by sparse as suggested by Alexey\n\tDobriyan.\n\n\tNov 09:\n\tAddress warnings of unused variables at cap_bprm_set_security\n\twhen file capabilities are disabled, and simultaneously clean\n\tup the code a little, by pulling the new code into a helper\n\tfunction.\n\n\tNov 08:\n\tFor pointers to required userspace tools and how to use\n\tthem, see http://www.friedhoff.org/fscaps.html.\n\n\tNov 07:\n\tFix the calculation of the highest bit checked in\n\tcheck_cap_sanity().\n\n\tNov 07:\n\tAllow file caps to be enabled without CONFIG_SECURITY, since\n\tcapabilities are the default.\n\tHook cap_task_setscheduler when !CONFIG_SECURITY.\n\tMove capable(TASK_KILL) to end of cap_task_kill to reduce\n\taudit messages.\n\n\tNov 05:\n\tAdd secondary calls in selinux/hooks.c to task_setioprio and\n\ttask_setscheduler so that selinux and capabilities with file\n\tcap support can be stacked.\n\n\tSep 05:\n\tAs Seth Arnold points out, uid checks are out of place\n\tfor capability code.\n\n\tSep 01:\n\tDefine task_setscheduler, task_setioprio, cap_task_kill, and\n\ttask_setnice to make sure a user cannot affect a process in which\n\tthey called a program with some fscaps.\n\n\tOne remaining question is the note under task_setscheduler: are we\n\tok with CAP_SYS_NICE being sufficient to confine a process to a\n\tcpuset?\n\n\tIt is a semantic change, as without fsccaps, attach_task doesn\u0027t\n\tallow CAP_SYS_NICE to override the uid equivalence check. But since\n\tit uses security_task_setscheduler, which elsewhere is used where\n\tCAP_SYS_NICE can be used to override the uid equivalence check,\n\tfixing it might be tough.\n\n\t task_setscheduler\n\t\t note: this also controls cpuset:attach_task. Are we ok with\n\t\t CAP_SYS_NICE being used to confine to a cpuset?\n\t task_setioprio\n\t task_setnice\n\t\t sys_setpriority uses this (through set_one_prio) for another\n\t\t process. Need same checks as setrlimit\n\n\tAug 21:\n\tUpdated secureexec implementation to reflect the fact that\n\teuid and uid might be the same and nonzero, but the process\n\tmight still have elevated caps.\n\n\tAug 15:\n\tHandle endianness of xattrs.\n\tEnforce capability version match between kernel and disk.\n\tEnforce that no bits beyond the known max capability are\n\tset, else return -EPERM.\n\tWith this extra processing, it may be worth reconsidering\n\tdoing all the work at bprm_set_security rather than\n\td_instantiate.\n\n\tAug 10:\n\tAlways call getxattr at bprm_set_security, rather than\n\tcaching it at d_instantiate.\n\n[morgan@kernel.org: file-caps clean up for linux/capability.h]\n[bunk@kernel.org: unexport cap_inode_killpriv]\nSigned-off-by: Serge E. Hallyn \u003cserue@us.ibm.com\u003e\nCc: Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nCc: James Morris \u003cjmorris@namei.org\u003e\nCc: Chris Wright \u003cchrisw@sous-sol.org\u003e\nCc: Andrew Morgan \u003cmorgan@kernel.org\u003e\nSigned-off-by: Andrew Morgan \u003cmorgan@kernel.org\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@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": "7a4050791b23c55a451974027d41d72a9b78039b", "tree": "f3956a04f24a2406276804124853535a59c0cbc1", "parents": [ "d773ed6b856a96bd6d18b6e04455e3ced0876da4" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "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": "mm: document tree_lock-\u003ezone.lock lockorder\n\nzone-\u003elock is quite an \"inner\" lock and mostly constrained to page alloc as\nwell, so like slab locks, it probably isn\u0027t something that is critically\nimportant to document here. However unlike slab locks, zone lock could be\nused more widely in future, and page_alloc.c might possibly have more\nbusiness to do tricky things with pagecache than does slab. So... I don\u0027t\nthink it hurts to document it.\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": "55144768e100b68447f44c5e5c9deb155ad661bd", "tree": "9889682ee3b64627ad9eb504f30672fad844752f", "parents": [ "03158cd7eb3374843de68421142ca5900df845d9" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:26 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:58 2007 -0700" }, "message": "fs: remove some AOP_TRUNCATED_PAGE\n\nprepare/commit_write no longer returns AOP_TRUNCATED_PAGE since OCFS2 and\nGFS2 were converted to the new aops, so we can make some simplifications\nfor that.\n\n[michal.k.k.piotrowski@gmail.com: fix warning]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Michael Halcrow \u003cmhalcrow@us.ibm.com\u003e\nCc: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nCc: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\nSigned-off-by: Michal Piotrowski \u003cmichal.k.k.piotrowski@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "89e107877b65bf6eff1d63a1302dee9a091586f5", "tree": "8a120a04c46f19229d1cf9b9c546f1818cf84c44", "parents": [ "7765ec26ae1c01bb29bedf910e4efcced8cc81d2" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:07 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:55 2007 -0700" }, "message": "fs: new cont helpers\n\nRework the generic block \"cont\" routines to handle the new aops. Supporting\ncont_prepare_write would take quite a lot of code to support, so remove it\ninstead (and we later convert all filesystems to use it).\n\nwrite_begin gets passed AOP_FLAG_CONT_EXPAND when called from\ngeneric_cont_expand, so filesystems can avoid the old hacks they used.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "674b892ede247ef4fb8d00918f02e29c32b9bbaf", "tree": "8e170040e64073932ba559cc31f3ec9802337406", "parents": [ "8268f5a7415d914fc855a86aa2284ac819dc6b2e" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:03 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:55 2007 -0700" }, "message": "mm: restore KERNEL_DS optimisations\n\nRestore the KERNEL_DS optimisation, especially helpful to the 2copy write\npath.\n\nThis may be a pretty questionable gain in most cases, especially after the\nlegacy 2copy write path is removed, but it doesn\u0027t cost much.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "afddba49d18f346e5cc2938b6ed7c512db18ca68", "tree": "4726e3d3b0e9e8e5b5d3b2b0cccb36446bbdf3ca", "parents": [ "637aff46f94a754207c80c8c64bf1b74f24b967d" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:01 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:55 2007 -0700" }, "message": "fs: introduce write_begin, write_end, and perform_write aops\n\nThese are intended to replace prepare_write and commit_write with more\nflexible alternatives that are also able to avoid the buffered write\ndeadlock problems efficiently (which prepare_write is unable to do).\n\n[mark.fasheh@oracle.com: API design contributions, code review and fixes]\n[akpm@linux-foundation.org: various fixes]\n[dmonakhov@sw.ru: new aop block_write_begin fix]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nSigned-off-by: Dmitriy Monakhov \u003cdmonakhov@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2f718ffc16c43a435d12919c75dbfad518abd056", "tree": "55588cb2815d844e9d0b2404cf8ceafe98b5c55d", "parents": [ "08291429cfa6258c4cd95d8833beb40f828b194e" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:59 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:55 2007 -0700" }, "message": "mm: buffered write iterator\n\nAdd an iterator data structure to operate over an iovec. Add usercopy\noperators needed by generic_file_buffered_write, and convert that function\nover.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "08291429cfa6258c4cd95d8833beb40f828b194e", "tree": "50a206f0f0e7a5400b44073107ff00517e6f50ac", "parents": [ "4a9e5ef1f4f15205e477817a5cefc34bd3f65f55" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:59 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "mm: fix pagecache write deadlocks\n\nModify the core write() code so that it won\u0027t take a pagefault while holding a\nlock on the pagecache page. There are a number of different deadlocks possible\nif we try to do such a thing:\n\n1. generic_buffered_write\n2. lock_page\n3. prepare_write\n4. unlock_page+vmtruncate\n5. copy_from_user\n6. mmap_sem(r)\n7. handle_mm_fault\n8. lock_page (filemap_nopage)\n9. commit_write\n10. unlock_page\n\na. sys_munmap / sys_mlock / others\nb. mmap_sem(w)\nc. make_pages_present\nd. get_user_pages\ne. handle_mm_fault\nf. lock_page (filemap_nopage)\n\n2,8\t- recursive deadlock if page is same\n2,8;2,8\t- ABBA deadlock is page is different\n2,6;b,f\t- ABBA deadlock if page is same\n\nThe solution is as follows:\n1. If we find the destination page is uptodate, continue as normal, but use\n atomic usercopies which do not take pagefaults and do not zero the uncopied\n tail of the destination. The destination is already uptodate, so we can\n commit_write the full length even if there was a partial copy: it does not\n matter that the tail was not modified, because if it is dirtied and written\n back to disk it will not cause any problems (uptodate *means* that the\n destination page is as new or newer than the copy on disk).\n\n1a. The above requires that fault_in_pages_readable correctly returns access\n information, because atomic usercopies cannot distinguish between\n non-present pages in a readable mapping, from lack of a readable mapping.\n\n2. If we find the destination page is non uptodate, unlock it (this could be\n made slightly more optimal), then allocate a temporary page to copy the\n source data into. Relock the destination page and continue with the copy.\n However, instead of a usercopy (which might take a fault), copy the data\n from the pinned temporary page via the kernel address space.\n\n(also, rename maxlen to seglen, because it was confusing)\n\nThis increases the CPU/memory copy cost by almost 50% on the affected\nworkloads. That will be solved by introducing a new set of pagecache write\naops in a subsequent patch.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4a9e5ef1f4f15205e477817a5cefc34bd3f65f55", "tree": "51f52086ecbccc3f41955d8d12293ef7a566a05b", "parents": [ "eb2be189317d031895b5ca534fbf735eb546158b" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:58 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "mm: write iovec cleanup\n\nHide some of the open-coded nr_segs tests into the iovec helpers. This is all\nto simplify generic_file_buffered_write, because that gets more complex in the\nnext patch.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "eb2be189317d031895b5ca534fbf735eb546158b", "tree": "8f1eda7af3be7285244a6f1ad77682e90d403c7b", "parents": [ "64649a58919e66ec21792dbb6c48cb3da22cbd7f" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:57 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "mm: buffered write cleanup\n\nQuite a bit of code is used in maintaining these \"cached pages\" that are\nprobably pretty unlikely to get used. It would require a narrow race where\nthe page is inserted concurrently while this process is allocating a page\nin order to create the spare page. Then a multi-page write into an uncached\npart of the file, to make use of it.\n\nNext, the buffered write path (and others) uses its own LRU pagevec when it\nshould be just using the per-CPU LRU pagevec (which will cut down on both data\nand code size cacheline footprint). Also, these private LRU pagevecs are\nemptied after just a very short time, in contrast with the per-CPU pagevecs\nthat are persistent. Net result: 7.3 times fewer lru_lock acquisitions required\nto add the pages to pagecache for a bulk write (in 4K chunks).\n\n[this gets rid of some cond_resched() calls in readahead.c and mpage.c due\n to clashes in -mm. What put them there, and why? ]\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "64649a58919e66ec21792dbb6c48cb3da22cbd7f", "tree": "054605b7da7bad43c299ef66de9d33fda87cd38d", "parents": [ "5fe172370687e03cc6ba8dca990b75db18ff9bb3" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:56 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "mm: trim more holes\n\nIf prepare_write fails with AOP_TRUNCATED_PAGE, or if commit_write fails, then\nwe may have failed the write operation despite prepare_write having\ninstantiated blocks past i_size. Fix this, and consolidate the trimming into\none place.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5fe172370687e03cc6ba8dca990b75db18ff9bb3", "tree": "8ce000fee15fa9ccd4313018f7f9ab1ffbc8cdaa", "parents": [ "ae37461c70bc8c8416cad1bab13a9898ed030aa1" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:56 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "mm: debug write deadlocks\n\nAllow CONFIG_DEBUG_VM to switch off the prefaulting logic, to simulate the\nMakes the race much easier to hit.\n\nThis is useful for demonstration and testing purposes, but is removed in a\nsubsequent patch.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ae37461c70bc8c8416cad1bab13a9898ed030aa1", "tree": "7ba24faab6f89651fd2b3d33563847764744d544", "parents": [ "6814d7a91289ceb143285975e244a8f00fd3a830" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Tue Oct 16 01:24:55 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "mm: clean up buffered write code\n\nRename some variables and fix some types.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6814d7a91289ceb143285975e244a8f00fd3a830", "tree": "e439e5d802d6ebaa73bac8b08c311ca60d4c8ee4", "parents": [ "4b49643fbb3fa8bf4910f82be02d45e94e8972a4" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Tue Oct 16 01:24:54 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "Revert \"[PATCH] generic_file_buffered_write(): deadlock on vectored write\"\n\nThis reverts commit 6527c2bdf1f833cc18e8f42bd97973d583e4aa83, which\nfixed the following bug:\n\n When prefaulting in the pages in generic_file_buffered_write(), we only\n faulted in the pages for the firts segment of the iovec. If the second of\n successive segment described a mmapping of the page into which we\u0027re\n write()ing, and that page is not up-to-date, the fault handler tries to lock\n the already-locked page (to bring it up to date) and deadlocks.\n\n An exploit for this bug is in writev-deadlock-demo.c, in\n http://www.zip.com.au/~akpm/linux/patches/stuff/ext3-tools.tar.gz.\n\n (These demos assume blocksize \u003c PAGE_CACHE_SIZE).\n\nThe problem with this fix is that it takes the kernel back to doing a single\nprepare_write()/commit_write() per iovec segment. So in the worst case we\u0027ll\nrun prepare_write+commit_write 1024 times where we previously would have run\nit once. The other problem with the fix is that it fix all the locking problems.\n\n\u003cinsert numbers obtained via ext3-tools\u0027s writev-speed.c here\u003e\n\nAnd apparently this change killed NFS overwrite performance, because, I\nsuppose, it talks to the server for each prepare_write+commit_write.\n\nSo just back that patch out - we\u0027ll be fixing the deadlock by other means.\n\nNick says: also it only ever actually papered over the bug, because after\nfaulting in the pages, they might be unmapped or reclaimed.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4b49643fbb3fa8bf4910f82be02d45e94e8972a4", "tree": "ee3bc7881a1e0b71fa093254bb725ad467d8ef72", "parents": [ "41cb8ac025dbbf6782eae10d231e7e2336ad3724" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Tue Oct 16 01:24:54 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "Revert \"[PATCH] generic_file_buffered_write(): handle zero-length iovec segments\"\n\nThis reverts commit 81b0c8713385ce1b1b9058e916edcf9561ad76d6, which was\na bugfix against 6527c2bdf1f833cc18e8f42bd97973d583e4aa83 (\"[PATCH]\ngeneric_file_buffered_write(): deadlock on vectored write\"), which we\nalso revert.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "41cb8ac025dbbf6782eae10d231e7e2336ad3724", "tree": "0070e26ee574338a4a3f56f574e1c126a4357c8e", "parents": [ "902aaed0d983dfd459fcb2b678608d4584782200" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:53 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "mm: revert KERNEL_DS buffered write optimisation\n\nRevert the patch from Neil Brown to optimise NFSD writev handling.\n\nCc: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "45726cb43d11b288c58243a26010f397054222f0", "tree": "ae1804a34f314be18865add063d660cf783e45be", "parents": [ "001281881067a5998384c6669bc8dbbbab8456c4" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:41 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:53 2007 -0700" }, "message": "mm: improve find_lock_page\n\nfind_lock_page does not need to recheck -\u003eindex because if the page is in the\nright mapping then the index must be the same. Also, tree_lock does not need\nto be retaken after the page is locked in order to test that -\u003emapping has not\nchanged, because holding the page lock pins its mapping.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "57f6b96c09c30e444e0d3fc3080feba037657a7b", "tree": "4b62e2f63352b74d6c9dd1ed1142b971dcd207e3", "parents": [ "b2c3843b1e25e2c67347c4671f33fbe6f5067e6b" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:37 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:53 2007 -0700" }, "message": "filemap: convert some unsigned long to pgoff_t\n\nConvert some \u0027unsigned long\u0027 to pgoff_t.\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b2c3843b1e25e2c67347c4671f33fbe6f5067e6b", "tree": "e1b161e5c7169baab8f71615879eb3b46ebe9a9e", "parents": [ "f2e189827a914b66e435e68b1c9e37775cb995ed" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:37 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:53 2007 -0700" }, "message": "filemap: trivial code cleanups\n\n- remove unused local next_index in do_generic_mapping_read()\n- remove a redudant page_cache_read() declaration\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7ff81078d8b9f3d05a27b7bd3786ffb1ef1b0d1f", "tree": "ac73cf0c8325783a28c4d16c783f6fd96d17be7c", "parents": [ "6b10c6c9fbfe754e8482efb8c8b84f8e40c0f2eb" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:35 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:52 2007 -0700" }, "message": "readahead: remove the local copy of ra in do_generic_mapping_read()\n\nThe local copy of ra in do_generic_mapping_read() can now go away.\n\nIt predates readanead(req_size). In a time when the readahead code was called\non *every* single page. Hence a local has to be made to reduce the chance of\nthe readahead state being overwritten by a concurrent reader. More details\nin: Linux: Random File I/O Regressions In 2.6\n\u003chttp://kerneltrap.org/node/3039\u003e\n\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f4e6b498d6e06742d72706ef50593a9c4dd72214", "tree": "74a573302b2ea086c0d21907175be604f110f5b1", "parents": [ "0bb7ba6b9c358c12084a3cbc6ac08c8d1e973937" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:33 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:52 2007 -0700" }, "message": "readahead: combine file_ra_state.prev_index/prev_offset into prev_pos\n\nCombine the file_ra_state members\n\t\t\t\tunsigned long prev_index\n\t\t\t\tunsigned int prev_offset\ninto\n\t\t\t\tloff_t prev_pos\n\nIt is more consistent and better supports huge files.\n\nThanks to Peter for the nice proposal!\n\n[akpm@linux-foundation.org: fix shift overflow]\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0bb7ba6b9c358c12084a3cbc6ac08c8d1e973937", "tree": "81dc745c660557af4d9ea8b9816846d0395ece20", "parents": [ "937085aa35cc873d427d250a1e304d641af24628" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 01:24:32 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:52 2007 -0700" }, "message": "readahead: mmap read-around simplification\n\nFold file_ra_state.mmap_hit into file_ra_state.mmap_miss and make it an int.\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "745ad48e8cac47beec0b2f72dc3c64424bce1fec", "tree": "a16a8eedb7d6e27eaba86fd0cca8ea7bfd0cdcd8", "parents": [ "dd204d63cd11509081b41d7ab305fdc173382039" ], "author": { "name": "Yan Zheng", "email": "yanzheng@21cn.com", "time": "Mon Oct 08 10:08:37 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Oct 08 12:58:14 2007 -0700" }, "message": "fix page release issue in filemap_fault\n\nfind_lock_page increases page\u0027s usage count, we should decrease it\nbefore return VM_FAULT_SIGBUS\n\nSigned-off-by: Yan Zheng\u003cyanzheng@21cn.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "dc8a7b11aa68d6795a46e0a42ce92220d1a6f0cd", "tree": "7b353684090d23b1e2e3f85bf83df491f04dcc8a", "parents": [ "d291676ce8bc1d8ef93488023d04027010596de3", "02a5e0acb3cb85d80d0fe834e366d38a92bbaa22" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Aug 11 16:01:06 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Aug 11 16:01:06 2007 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.dk/linux-2.6-block\n\n* \u0027for-linus\u0027 of git://git.kernel.dk/linux-2.6-block:\n BLOCK: Hide the contents of linux/bio.h if CONFIG_BLOCK\u003dn\n sysace: HDIO_GETGEO has it\u0027s own method for ages\n drivers/block/cpqarray.c: better error handling and kmalloc + memset conversion to k[cz]alloc\n drivers/block/cciss.c: kmalloc + memset conversion to kzalloc\n Clean up duplicate includes in drivers/block/\n Fix remap handling by blktrace\n [PATCH] remove mm/filemap.c:file_send_actor()\n" }, { "commit": "f0b85c0cfdad8977d82fed88e846fc2245585d0e", "tree": "df85c3195dd46095a40be69647ee5c93911f2e03", "parents": [ "f6901e639800e745457b1dcd99c52647981438d7" ], "author": { "name": "Stephen Hemminger", "email": "shemminger@linux-foundation.org", "time": "Fri Aug 10 13:01:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Aug 11 15:47:42 2007 -0700" }, "message": "readahead: docbook fix\n\nMinor docbook error since argument name in comment doesn\u0027t match function\n\nSigned-off-by: Stephen Hemminger \u003cshemminger@linux-foundation.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ec05b297f91a443aa26b74059b573bfad49c9ebb", "tree": "4890ea53de4373e51688e72576781909588515a3", "parents": [ "ac07860264bd2b18834d3fa3be47032115524cea" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Mon Jul 30 08:24:27 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Sat Aug 11 22:34:47 2007 +0200" }, "message": "[PATCH] remove mm/filemap.c:file_send_actor()\n\nThis patch removes the no longer used file_send_actor().\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "bfe0d6867e36f46836d2c3755fa8b9ef8cf143ba", "tree": "0632dc1fd135324b6e9baf9568ee2cf46cb5765b", "parents": [ "64d158bc3db121fd2bec29057a44843930b044fa" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Tue Jul 31 00:37:56 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 31 15:39:38 2007 -0700" }, "message": "fix filemap.c kernel-doc\n\nFix kernel-doc warning:\nWarning(linux-2.6.23-rc1-mm1//mm/filemap.c:864): No description found for parameter \u0027ra\u0027\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "cf914a7d656e62b9dd3e0dffe4f62b953ae6048d", "tree": "baf7e79de006ca80eac426d2d1be4c52f5f19624", "parents": [ "fe3cba17c49471e99d3421e675fc8b3deaaf0b70" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Jul 19 01:48:08 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:44 2007 -0700" }, "message": "readahead: split ondemand readahead interface into two functions\n\nSplit ondemand readahead interface into two functions. I think this makes it\na little clearer for non-readahead experts (like Rusty).\n\nInternally they both call ondemand_readahead(), but the page argument is\nchanged to an obvious boolean flag.\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3ea89ee86a82e9fbde37018d9b9e92a552e5fd13", "tree": "5fef7216ef39d66684754e4aadf368ce9adfd72e", "parents": [ "122a21d11cbfda6d1e33cbc8ae9e4c4ee2f1886e" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Thu Jul 19 01:48:02 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:44 2007 -0700" }, "message": "readahead: convert filemap invocations\n\nConvert filemap reads to use on-demand readahead.\n\nThe new call scheme is to\n- call readahead on non-cached page\n- call readahead on look-ahead page\n- update prev_index when finished with the read request\n\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nCc: Steven Pratt \u003cslpratt@austin.ibm.com\u003e\nCc: Ram Pai \u003clinuxram@us.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "83c54070ee1a2d05c89793884bea1a03f2851ed4", "tree": "dc732f5a9b93fb7004ed23f551bd98b77cc580e0", "parents": [ "d0217ac04ca6591841e5665f518e38064f4e65bd" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Jul 19 01:47:05 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:41 2007 -0700" }, "message": "mm: fault feedback #2\n\nThis patch completes Linus\u0027s wish that the fault return codes be made into\nbit flags, which I agree makes everything nicer. This requires requires\nall handle_mm_fault callers to be modified (possibly the modifications\nshould go further and do things like fault accounting in handle_mm_fault --\nhowever that would be for another patch).\n\n[akpm@linux-foundation.org: fix alpha build]\n[akpm@linux-foundation.org: fix s390 build]\n[akpm@linux-foundation.org: fix sparc build]\n[akpm@linux-foundation.org: fix sparc64 build]\n[akpm@linux-foundation.org: fix ia64 build]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Richard Henderson \u003crth@twiddle.net\u003e\nCc: Ivan Kokshaysky \u003cink@jurassic.park.msu.ru\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nCc: Ian Molton \u003cspyro@f2s.com\u003e\nCc: Bryan Wu \u003cbryan.wu@analog.com\u003e\nCc: Mikael Starvik \u003cstarvik@axis.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Yoshinori Sato \u003cysato@users.sourceforge.jp\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Hirokazu Takata \u003ctakata@linux-m32r.org\u003e\nCc: Geert Uytterhoeven \u003cgeert@linux-m68k.org\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: Greg Ungerer \u003cgerg@uclinux.org\u003e\nCc: Matthew Wilcox \u003cwilly@debian.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Kazumoto Kojima \u003ckkojima@rr.iij4u.or.jp\u003e\nCc: Richard Curnow \u003crc@rc0.org.uk\u003e\nCc: William Lee Irwin III \u003cwli@holomorphy.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Jeff Dike \u003cjdike@addtoit.com\u003e\nCc: Paolo \u0027Blaisorblade\u0027 Giarrusso \u003cblaisorblade@yahoo.it\u003e\nCc: Miles Bader \u003cuclinux-v850@lsi.nec.co.jp\u003e\nCc: Chris Zankel \u003cchris@zankel.net\u003e\nAcked-by: Kyle McMartin \u003ckyle@mcmartin.ca\u003e\nAcked-by: Haavard Skinnemoen \u003chskinnemoen@atmel.com\u003e\nAcked-by: Ralf Baechle \u003cralf@linux-mips.org\u003e\nAcked-by: Andi Kleen \u003cak@muc.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\n[ Still apparently needs some ARM and PPC loving - Linus ]\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d0217ac04ca6591841e5665f518e38064f4e65bd", "tree": "d3309094bb734d34773f97d642593e298a5cfcfc", "parents": [ "ed2f2f9b3ff8debdf512f7687b232c3c1d7d60d7" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Jul 19 01:47:03 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:41 2007 -0700" }, "message": "mm: fault feedback #1\n\nChange -\u003efault prototype. We now return an int, which contains\nVM_FAULT_xxx code in the low byte, and FAULT_RET_xxx code in the next byte.\n FAULT_RET_ code tells the VM whether a page was found, whether it has been\nlocked, and potentially other things. This is not quite the way he wanted\nit yet, but that\u0027s changed in the next patch (which requires changes to\narch code).\n\nThis means we no longer set VM_CAN_INVALIDATE in the vma in order to say\nthat a page is locked which requires filemap_nopage to go away (because we\ncan no longer remain backward compatible without that flag), but we were\ngoing to do that anyway.\n\nstruct fault_data is renamed to struct vm_fault as Linus asked. address\nis now a void __user * that we should firmly encourage drivers not to use\nwithout really good reason.\n\nThe page is now returned via a page pointer in the vm_fault struct.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "54cb8821de07f2ffcd28c380ce9b93d5784b40d7", "tree": "1de676534963d96af42863b20191bc9f80060dea", "parents": [ "d00806b183152af6d24f46f0c33f14162ca1262a" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Jul 19 01:46:59 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:41 2007 -0700" }, "message": "mm: merge populate and nopage into fault (fixes nonlinear)\n\nNonlinear mappings are (AFAIKS) simply a virtual memory concept that encodes\nthe virtual address -\u003e file offset differently from linear mappings.\n\n-\u003epopulate is a layering violation because the filesystem/pagecache code\nshould need to know anything about the virtual memory mapping. The hitch here\nis that the -\u003enopage handler didn\u0027t pass down enough information (ie. pgoff).\n But it is more logical to pass pgoff rather than have the -\u003enopage function\ncalculate it itself anyway (because that\u0027s a similar layering violation).\n\nHaving the populate handler install the pte itself is likewise a nasty thing\nto be doing.\n\nThis patch introduces a new fault handler that replaces -\u003enopage and\n-\u003epopulate and (later) -\u003enopfn. Most of the old mechanism is still in place\nso there is a lot of duplication and nice cleanups that can be removed if\neveryone switches over.\n\nThe rationale for doing this in the first place is that nonlinear mappings are\nsubject to the pagefault vs invalidate/truncate race too, and it seemed stupid\nto duplicate the synchronisation logic rather than just consolidate the two.\n\nAfter this patch, MAP_NONBLOCK no longer sets up ptes for pages present in\npagecache. Seems like a fringe functionality anyway.\n\nNOPAGE_REFAULT is removed. This should be implemented with -\u003efault, and no\nusers have hit mainline yet.\n\n[akpm@linux-foundation.org: cleanup]\n[randy.dunlap@oracle.com: doc. fixes for readahead]\n[akpm@linux-foundation.org: build fix]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d00806b183152af6d24f46f0c33f14162ca1262a", "tree": "36f829cf13d5410374a3f00b56ec0b1f8dc3ce3c", "parents": [ "589f1e81bde732dd0b1bc5d01b6bddd4bcb4527b" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Jul 19 01:46:57 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:41 2007 -0700" }, "message": "mm: fix fault vs invalidate race for linear mappings\n\nFix the race between invalidate_inode_pages and do_no_page.\n\nAndrea Arcangeli identified a subtle race between invalidation of pages from\npagecache with userspace mappings, and do_no_page.\n\nThe issue is that invalidation has to shoot down all mappings to the page,\nbefore it can be discarded from the pagecache. Between shooting down ptes to\na particular page, and actually dropping the struct page from the pagecache,\ndo_no_page from any process might fault on that page and establish a new\nmapping to the page just before it gets discarded from the pagecache.\n\nThe most common case where such invalidation is used is in file truncation.\nThis case was catered for by doing a sort of open-coded seqlock between the\nfile\u0027s i_size, and its truncate_count.\n\nTruncation will decrease i_size, then increment truncate_count before\nunmapping userspace pages; do_no_page will read truncate_count, then find the\npage if it is within i_size, and then check truncate_count under the page\ntable lock and back out and retry if it had subsequently been changed (ptl\nwill serialise against unmapping, and ensure a potentially updated\ntruncate_count is actually visible).\n\nComplexity and documentation issues aside, the locking protocol fails in the\ncase where we would like to invalidate pagecache inside i_size. do_no_page\ncan come in anytime and filemap_nopage is not aware of the invalidation in\nprogress (as it is when it is outside i_size). The end result is that\ndangling (-\u003emapping \u003d\u003d NULL) pages that appear to be from a particular file\nmay be mapped into userspace with nonsense data. Valid mappings to the same\nplace will see a different page.\n\nAndrea implemented two working fixes, one using a real seqlock, another using\na page-\u003eflags bit. He also proposed using the page lock in do_no_page, but\nthat was initially considered too heavyweight. However, it is not a global or\nper-file lock, and the page cacheline is modified in do_no_page to increment\n_count and _mapcount anyway, so a further modification should not be a large\nperformance hit. Scalability is not an issue.\n\nThis patch implements this latter approach. -\u003enopage implementations return\nwith the page locked if it is possible for their underlying file to be\ninvalidated (in that case, they must set a special vm_flags bit to indicate\nso). do_no_page only unlocks the page after setting up the mapping\ncompletely. invalidation is excluded because it holds the page lock during\ninvalidation of each page (and ensures that the page is not mapped while\nholding the lock).\n\nThis also allows significant simplifications in do_no_page, because we have\nthe page locked in the right place in the pagecache from the start.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a32ea1e1f925399e0d81ca3f7394a44a6dafa12c", "tree": "fade44f4d7baf5695a856ad73e6b98f0d6edf9de", "parents": [ "e21ea246bce5bb93dd822de420172ec280aed492" ], "author": { "name": "NeilBrown", "email": "neilb@suse.de", "time": "Tue Jul 17 04:03:04 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:22:59 2007 -0700" }, "message": "Fix read/truncate race\n\ndo_generic_mapping_read currently samples the i_size at the start and doesn\u0027t\ndo so again unless it needs to call -\u003ereadpage to load a page. After\n-\u003ereadpage it has to re-sample i_size as a truncate may have caused that page\nto be filled with zeros, and the read() call should not see these.\n\nHowever there are other activities that might cause -\u003ereadpage to be called on\na page between the time that do_generic_mapping_read samples i_size and when\nit finds that it has an uptodate page. These include at least read-ahead and\npossibly another thread performing a read.\n\nSo do_generic_mapping_read must sample i_size *after* it has an uptodate page.\n Thus the current sampling at the start and after a read can be replaced with\na sampling before the copy-out.\n\nThe same change applied to __generic_file_splice_read.\n\nNote that this fixes any race with truncate_complete_page, but does not fix a\npossible race with truncate_partial_page. If a partial truncate happens after\ndo_generic_mapping_read samples i_size and before the copy_out, the nuls that\ntruncate_partial_page place in the page could be copied out incorrectly.\n\nI think the best fix for that is to *not* zero out parts of the page in\ntruncate_partial_page, but rather to zero out the tail of a page when\nincreasing i_size.\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nAcked-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "17973f5af741f1758ed57c5115ca394c22bee159", "tree": "0fd340e46f1fbae4ab7aa8d06b26af208a3e83f4", "parents": [ "1e3e8d91fee56e1ab598b265466dc38033f1b915" ], "author": { "name": "Micah Cowan", "email": "micah@cowan.name", "time": "Sun Jul 15 23:40:08 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:43 2007 -0700" }, "message": "Only send SIGXFSZ when exceeding rlimits.\n\nSome users have been having problems with utilities like cp or dd dumping\ncore when they try to copy a file that\u0027s too large for the destination\nfilesystem (typically, \u003e 4gb). Apparently, some defunct standards required\nSIGXFSZ to be sent in such circumstances, but SUS only requires/allows it\nfor when a written file exceeds the process\u0027s resource limits. I\u0027d like to\nlimit SIGXFSZs to the bare minimum required by SUS.\n\nPatch sent per http://lkml.org/lkml/2007/4/10/302\n\nSigned-off-by: Micah Cowan \u003cmicahcowan@ubuntu.com\u003e\nAcked-by: Alan Cox \u003calan@redhat.com\u003e\nCc: \u003creiserfs-dev@namesys.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c44939ecb6e05aeaaf12d4e1bb046719c97e457e", "tree": "5bf1bc2c4c518fb89271110a0e9fbb43d6f4c413", "parents": [ "5ed44a401ddfc60e11c3484e86f0c8285051139a" ], "author": { "name": "akpm@linux-foundation.org", "email": "akpm@linux-foundation.org", "time": "Sun Jul 15 23:38:25 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:37 2007 -0700" }, "message": "NeilBrown \u003cneilb@suse.de\u003e\n\nThe do_loop_readv_writev implementation of readv breaks out of the loop as\nsoon as a single read request didn\u0027t fill it\u0027s buffer:\n\n\t\tif (nr !\u003d len)\n\t\t\tbreak;\n\nThe generic_file_aio_read version doesn\u0027t. So if it hits EOF before the end\nof the list of buffers, it will try again on the next buffer. If the file was\nextended in the mean time, this will produce a bad result.\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "45426812d6b601430d560cb6049757b5b0bc71c4", "tree": "64c8439a53f4ca402a9d7deb2a455aa0de08c8ea", "parents": [ "f96efd585b8d847181f81bf16721f96ded18d9fe" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sun Jul 15 23:38:12 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:35 2007 -0700" }, "message": "mm: debug check for the fault vs invalidate race\n\nAdd a bugcheck for Andrea\u0027s pagefault vs invalidate race. This is triggerable\nfor both linear and nonlinear pages with a userspace test harness (using\ndirect IO and truncate, respectively).\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0452a4e5d021900b07ebdeecb9ed03b49f164f3f", "tree": "c03b50882723102bf51fade26f6a24d9dd0a182e", "parents": [ "5ffc4ef45b3b0a57872f631b4e4ceb8ace0d7496" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Jun 01 11:55:49 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jul 10 08:04:14 2007 +0200" }, "message": "sendfile: kill generic_file_sendfile()\n\nIt\u0027s no longer used.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "4e99325b462ba18075768582621af74a6b79d2a5", "tree": "c10d5cca6c42dda86faa3881e406475d8d645764", "parents": [ "95511ad4342cd094e62c807f6631b9a19cc6b129" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Sun Jul 08 01:13:06 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Jul 08 10:13:21 2007 -0700" }, "message": "mm: double mark_page_accessed() in read_cache_page_async()\n\nFix a post-2.6.21 regression.\n\nread_cache_page_async() has two invocations of mark_page_accessed() which will\nlaunch pages right onto the active list.\n\nRemove the first one, keeping the latter one. This avoids marking unwanted\npages active (in the retry loop).\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "43c0f3d25c602dc96b201ed81ffda0bc600ff969", "tree": "88ecad9eda4797693a97e0bcdf7ced13be99f3bd", "parents": [ "8382d2b9a7205fe1fb262f59237715a40c911880" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue May 15 23:57:09 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 16 21:19:15 2007 -0700" }, "message": "Fix: find_or_create_page skips cpuset memory spreading.\n\nWe call alloc_page where we should be calling __page_cache_alloc.\n\n__page_cache_alloc performs cpuset memory spreading. alloc_page does not.\nThere is no reason that pages allocated via find_or_create should be\nexempt.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c855ff3718e5f667b463b20b9de516b4cd7625ad", "tree": "5f5f2db132c80705db2254fc8f2f222160228aa5", "parents": [ "aabded9c3aab5160ae2ca3dd1fa0fa37f3d510e4" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Wed May 09 13:42:20 2007 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 13:04:03 2007 -0700" }, "message": "Fix a bad error case handling in read_cache_page_async()\n\nCommit 6fe6900e1e5b6fa9e5c59aa5061f244fe3f467e2 introduced a nasty bug\nin read_cache_page_async().\n\nIt added a \"mark_page_accessed(page)\" at the final return path in\nread_cache_page_async(). But in error cases, \u0027page\u0027 holds the error\ncode, and you can\u0027t mark it accessed.\n\n[ and Glauber de Oliveira Costa points out that we can use a return\n instead of adding more goto\u0027s ]\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ef71c15c46a053818f7e69098ebb052b31ffa56b", "tree": "1136f1280e2a570a5c29486aef408473160c76b5", "parents": [ "9b04bd27564cfd7224e0135ba37df778f1d490bf" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Wed May 09 02:33:44 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:50 2007 -0700" }, "message": "AFS: export a couple of core functions for AFS write support\n\nExport a couple of core functions for AFS write support to use:\n\n\tfind_get_pages_contig()\n\tfind_get_pages_tag()\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ef51c97623b94f51e439ac91d2736aab3d1b6594", "tree": "5c020421f1e5a6e28b5a9f341fec32479a8ffb3a", "parents": [ "524e6752912a891a396a9cf74c5d7d60fff5510a" ], "author": { "name": "Mark Fasheh", "email": "mark.fasheh@oracle.com", "time": "Tue May 08 00:27:10 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:04 2007 -0700" }, "message": "Remove do_sync_file_range()\n\nRemove do_sync_file_range() and convert callers to just use\ndo_sync_mapping_range().\n\nSigned-off-by: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0ceb331433e8aad9c5f441a965d7c681f8b9046f", "tree": "fd3d679a4015242dd65f0721f52242ad47619910", "parents": [ "b46b8f19c9cd435ecac4d9d12b39d78c137ecd66" ], "author": { "name": "Dmitriy Monakhov", "email": "dmonakhov@openvz.org", "time": "Tue May 08 00:23:02 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:14:57 2007 -0700" }, "message": "mm: move common segment checks to separate helper function\n\n[akpm@linux-foundation.org: cleanup]\nSigned-off-by: Monakhov Dmitriy \u003cdmonakhov@openvz.org\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nAcked-by: Anton Altaparmakov \u003caia21@cam.ac.uk\u003e\nAcked-by: David Chinner \u003cdgc@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6ce745ed39d35f9d547d00d406db2be7c6c175b3", "tree": "16f471389c9f619c37891fdb6e1843e1f2721c78", "parents": [ "ec0f16372277052a29a6c17527c6cae5e898b3fd" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Sun May 06 14:49:26 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:52 2007 -0700" }, "message": "readahead: code cleanup\n\nRename file_ra_state.prev_page to prev_index and file_ra_state.offset to\nprev_offset. Also update of prev_index in do_generic_mapping_read() is now\nmoved close to the update of prev_offset.\n\n[wfg@mail.ustc.edu.cn: fix it]\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: WU Fengguang \u003cwfg@mail.ustc.edu.cn\u003e\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ec0f16372277052a29a6c17527c6cae5e898b3fd", "tree": "35636edac6ed01baf301f3aca96f090caae82c9d", "parents": [ "b813e931b4c8235bb42e301096ea97dbdee3e8fe" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Sun May 06 14:49:25 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:52 2007 -0700" }, "message": "readahead: improve heuristic detecting sequential reads\n\nIntroduce ra.offset and store in it an offset where the previous read\nended. This way we can detect whether reads are really sequential (and\nthus we should not mark the page as accessed repeatedly) or whether they\nare random and just happen to be in the same page (and the page should\nreally be marked accessed again).\n\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nAcked-by: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: WU Fengguang \u003cwfg@mail.ustc.edu.cn\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a8127717cb24be7b8827a8d9e0ddbfde6b392146", "tree": "3b7d5556f127263b600bbcb44437c4c1739c000a", "parents": [ "14e072984179d3d421bf9ab75cc67e0961742841" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sun May 06 14:49:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:52 2007 -0700" }, "message": "mm: simplify filemap_nopage\n\nIdentical block is duplicated twice: contrary to the comment, we have been\nre-reading the page *twice* in filemap_nopage rather than once.\n\nIf any retry logic or anything is needed, it belongs in lower levels anyway.\nOnly retry once. Linus agrees.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6fe6900e1e5b6fa9e5c59aa5061f244fe3f467e2", "tree": "8bbfe5072279227cc50a941ad4813908082426a1", "parents": [ "714b8171af9c930a59a0da8f6fe50518e70ab035" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sun May 06 14:49:04 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:51 2007 -0700" }, "message": "mm: make read_cache_page synchronous\n\nEnsure pages are uptodate after returning from read_cache_page, which allows\nus to cut out most of the filesystem-internal PageUptodate calls.\n\nI didn\u0027t have a great look down the call chains, but this appears to fixes 7\npossible use-before uptodate in hfs, 2 in hfsplus, 1 in jfs, a few in\necryptfs, 1 in jffs2, and a possible cleared data overwritten with readpage in\nblock2mtd. All depending on whether the filler is async and/or can return\nwith a !uptodate page.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "65b8291c4000e5f38fc94fb2ca0cb7e8683c8a1b", "tree": "aeebdb654ce5db3cf02a9110e3b2db7e7aef06f0", "parents": [ "00e9fa2d6421fbbefb4c02821a1e779a3ce47781" ], "author": { "name": "Zach Brown", "email": "zach.brown@oracle.com", "time": "Fri Mar 16 13:38:11 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Mar 16 19:25:04 2007 -0700" }, "message": "[PATCH] dio: invalidate clean pages before dio write\n\nThis patch fixes a user-triggerable oops that was reported by Leonid\nAnaniev as archived at http://lkml.org/lkml/2007/2/8/337.\n\ndio writes invalidate clean pages that intersect the written region so that\nsubsequent buffered reads go to disk to read the new data. If this fails\nthe interface tries to tell the caller that the cache is inconsistent by\nreturning EIO.\n\nBefore this patch we had the problem where this invalidation failure would\nclobber -EIOCBQUEUED as it made its way from fs/direct-io.c to fs/aio.c.\nBoth fs/aio.c and bio completion call aio_complete() and we reference freed\nmemory, usually oopsing.\n\nThis patch addresses this problem by invalidating before the write so that\nwe can cleanly return -EIO before -\u003edirect_IO() has had a chance to return\n-EIOCBQUEUED.\n\nThere is a compromise here. During the dio write we can fault in mmap()ed\npages which intersect the written range with get_user_pages() if the user\nprovided them for the source buffer. This is a crazy thing to do, but we\ncan make it mostly work in most cases by trying the invalidation again.\nThe compromise is that we won\u0027t return an error if this second invalidation\nfails if it\u0027s an AIO write and we have -EIOCBQUEUED.\n\nThis was tested by having two processes race performing large O_DIRECT and\nbuffered ordered writes. Within minutes ext3 would see a race between\next3_releasepage() and jbd holding a reference on ordered data buffers and\nwould cause invalidation to fail, panicing the box. The test can be found\nin the \u0027aio_dio_bugs\u0027 test group in test.kernel.org/autotest. After this\npatch the test passes.\n\nSigned-off-by: Zach Brown \u003czach.brown@oracle.com\u003e\nSigned-off-by: Benjamin LaHaise \u003cbcrl@kvack.org\u003e\nCc: Leonid Ananiev \u003cleonid.i.ananiev@linux.intel.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "29dbb3fc8020f025bc38b262ec494e19fd3eac02", "tree": "579877f8d80e04e0908253b782b8e58c742b3fe6", "parents": [ "3160a711ef754758e7f85ae371cf900252c1a392" ], "author": { "name": "NeilBrown", "email": "neilb@suse.de", "time": "Fri Feb 16 01:28:38 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 16 08:14:01 2007 -0800" }, "message": "[PATCH] knfsd: stop NFSD writes from being broken into lots of little writes to filesystem\n\nWhen NFSD receives a write request, the data is typically in a number of\n1448 byte segments and writev is used to collect them together.\n\nUnfortunately, generic_file_buffered_write passes these to the filesystem\none at a time, so an e.g. 32K over-write becomes a series of partial-page\nwrites to each page, causing the filesystem to have to pre-read those pages\n- wasted effort.\n\ngeneric_file_buffered_write handles one segment of the vector at a time as\nit has to pre-fault in each segment to avoid deadlocks. When writing from\nkernel-space (and nfsd does) this is not an issue, so\ngeneric_file_buffered_write does not need to break and iovec from nfsd into\nlittle pieces.\n\nThis patch avoids the splitting when get_fs is KERNEL_DS as it is\nfrom NFSd.\n\nThis issue was introduced by commit 6527c2bdf1f833cc18e8f42bd97973d583e4aa83\n\nAcked-by: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Norman Weathers \u003cnorman.r.weathers@conocophillips.com\u003e\nCc: Vladimir V. Saveliev \u003cvs@namesys.com\u003e\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "72fd4a35a824331d7a0f4168d7576502d95d34b3", "tree": "be27880bc36b7f62e8044a88b8744a35c5317714", "parents": [ "262086cf5b5343c2b81c97b1c606058e921859df" ], "author": { "name": "Robert P. J. Day", "email": "rpjday@mindspring.com", "time": "Sat Feb 10 01:45:59 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:32 2007 -0800" }, "message": "[PATCH] Numerous fixes to kernel-doc info in source files.\n\nA variety of (mostly) innocuous fixes to the embedded kernel-doc content in\nsource files, including:\n\n * make multi-line initial descriptions single line\n * denote some function names, constants and structs as such\n * change erroneous opening \u0027/*\u0027 to \u0027/**\u0027 in a few places\n * reword some text for clarity\n\nSigned-off-by: Robert P. J. Day \u003crpjday@mindspring.com\u003e\nCc: \"Randy.Dunlap\" \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "62045305c20a194127ae87ccf963cfe6ffde7c4e", "tree": "e672f27c6fd422aa9c2a7ec1ed30fb479510ed15", "parents": [ "f049274b012fd3b50113f194bfbbcbc3143d0da3" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Fri Feb 09 05:28:19 2007 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 09 08:06:14 2007 -0800" }, "message": "[PATCH] mm: remove find_trylock_page\n\nRemove find_trylock_page as per the removal schedule.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\n[ Let\u0027s see if anybody screams ]\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8459d86aff04fa53c2ab6a6b9f355b3063cc8014", "tree": "c0584c4907f0d63a18998b7cbffdf7900609606b", "parents": [ "20258b2b397031649e4a41922fe803d57017df84" ], "author": { "name": "Zach Brown", "email": "zach.brown@oracle.com", "time": "Sun Dec 10 02:21:05 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:57:21 2006 -0800" }, "message": "[PATCH] dio: only call aio_complete() after returning -EIOCBQUEUED\n\nThe only time it is safe to call aio_complete() is when the -\u003eki_retry\nfunction returns -EIOCBQUEUED to the AIO core. direct_io_worker() has\nhistorically done this by relying on its caller to translate positive return\ncodes into -EIOCBQUEUED for the aio case. It did this by trying to keep\nconditionals in sync. direct_io_worker() knew when finished_one_bio() was\ngoing to call aio_complete(). It would reverse the test and wait and free the\ndio in the cases it thought that finished_one_bio() wasn\u0027t going to.\n\nNot surprisingly, it ended up getting it wrong. \u0027ret\u0027 could be a negative\nerrno from the submission path but it failed to communicate this to\nfinished_one_bio(). direct_io_worker() would return \u003c 0, it\u0027s callers\nwouldn\u0027t raise -EIOCBQUEUED, and aio_complete() would be called. In the\nfuture finished_one_bio()\u0027s tests wouldn\u0027t reflect this and aio_complete()\nwould be called for a second time which can manifest as an oops.\n\nThe previous cleanups have whittled the sync and async completion paths down\nto the point where we can collapse them and clearly reassert the invariant\nthat we must only call aio_complete() after returning -EIOCBQUEUED.\ndirect_io_worker() will only return -EIOCBQUEUED when it is not the last to\ndrop the dio refcount and the aio bio completion path will only call\naio_complete() when it is the last to drop the dio refcount.\ndirect_io_worker() can ensure that it is the last to drop the reference count\nby waiting for bios to drain. It does this for sync ops, of course, and for\npartial dio writes that must fall back to buffered and for aio ops that saw\nerrors during submission.\n\nThis means that operations that end up waiting, even if they were issued as\naio ops, will not call aio_complete() from dio. Instead we return the return\ncode of the operation and let the aio core call aio_complete(). This is\npurposely done to fix a bug where AIO DIO file extensions would call\naio_complete() before their callers have a chance to update i_size.\n\nNow that direct_io_worker() is explicitly returning -EIOCBQUEUED its callers\nno longer have to translate for it. XFS needs to be careful not to free\nresources that will be used during AIO completion if -EIOCBQUEUED is returned.\n We maintain the previous behaviour of trying to write fs metadata for O_SYNC\naio+dio writes.\n\nSigned-off-by: Zach Brown \u003czach.brown@oracle.com\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Suparna Bhattacharya \u003csuparna@in.ibm.com\u003e\nAcked-by: Jeff Moyer \u003cjmoyer@redhat.com\u003e\nCc: \u003cxfs-masters@oss.sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "d3ac7f892b7d07d61d0895caa4f6e190e43112f8", "tree": "0ff35e7e5ab822b600075d79910d3cc136ba07ef", "parents": [ "f3a43f3f64bff8e205c3702f6b4804d66e306848" ], "author": { "name": "Josef \"Jeff\" Sipek", "email": "jsipek@cs.sunysb.edu", "time": "Fri Dec 08 02:36:44 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Dec 08 08:28:43 2006 -0800" }, "message": "[PATCH] mm: change uses of f_{dentry,vfsmnt} to use f_path\n\nChange all the uses of f_{dentry,vfsmnt} to f_path.{dentry,mnt} in linux/mm/.\n\nSigned-off-by: Josef \"Jeff\" Sipek \u003cjsipek@cs.sunysb.edu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "098fe651f7e9d759d1117c78c1a642b9b3945922", "tree": "8688e367d04c8341e79d9da775dccb9dc7747509", "parents": [ "cd54e7e54318d333227b13186f9a464bf1f68d27" ], "author": { "name": "Ashwin Chaugule", "email": "ashwin.chaugule@celunite.com", "time": "Wed Dec 06 20:31:54 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:21 2006 -0800" }, "message": "[PATCH] grab swap token reordered\n\nMake sure the contention for the token happens _before_ any read-in and\nkicks the swap-token algo only when the VM is under pressure.\n\nSigned-off-by: Ashwin Chaugule \u003cashwin.chaugule@celunite.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "d23a147bb6e8d467e8df73b6589888717da3b9ce", "tree": "7888c513810dc39a20e061e720c52fc8e7d778a4", "parents": [ "55ed16029d597622db8121270e687373b5e31722" ], "author": { "name": "Mark Fasheh", "email": "mark.fasheh@oracle.com", "time": "Tue Oct 17 17:05:18 2006 -0700" }, "committer": { "name": "Mark Fasheh", "email": "mark.fasheh@oracle.com", "time": "Fri Dec 01 18:28:38 2006 -0800" }, "message": "[PATCH] Export should_remove_suid()\n\nThis helps us avoid replicating the same logic within file system drivers.\n\nSigned-off-by: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\n" }, { "commit": "2ae88149a27cadf2840e0ab8155bef13be285c03", "tree": "e6873cc050973db6f2b01568a5e1faa6c981d139", "parents": [ "858cbcdd4f7a235f609249b9ca681b7ec5d786a3" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sat Oct 28 10:38:23 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 28 11:30:50 2006 -0700" }, "message": "[PATCH] mm: clean up pagecache allocation\n\n- Consolidate page_cache_alloc\n\n- Fix splice: only the pagecache pages and filesystem data need to use\n mapping_gfp_mask.\n\n- Fix grab_cache_page_nowait: same as splice, also honour NUMA placement.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "7b7fc708b568a258595e1fa911b930a75ac07b48", "tree": "5c77a5397d01c91aaa59ee5517af28afee32afcb", "parents": [ "c7a3bd177f248d01ee18a01d22048c80e071c331", "8c34e2d63231d4bf4852bac8521883944d770fe3" ], "author": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 21 10:01:52 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 21 10:01:52 2006 -0700" }, "message": "Merge branch \u0027splice\u0027 of git://brick.kernel.dk/data/git/linux-2.6-block\n\n* \u0027splice\u0027 of git://brick.kernel.dk/data/git/linux-2.6-block:\n [PATCH] Remove SUID when splicing into an inode\n [PATCH] Add lockless helpers for remove_suid()\n [PATCH] Introduce generic_file_splice_write_nolock()\n [PATCH] Take i_mutex in splice_from_pipe()\n" }, { "commit": "82591e6ea234762eeaa8b2337fe060ed438c18dc", "tree": "ea521388e91bdf385de546dada0925316eee02e3", "parents": [ "b95936cb9267e4c90a0b92361609ef5fd85a0a5f" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Oct 19 23:29:10 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Oct 20 10:26:44 2006 -0700" }, "message": "[PATCH] mm: more commenting on lock ordering\n\nClarify lockorder comments now that sys_msync dropps mmap_sem before\ncalling do_fsync.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "fb5527e68d495650a7658fec9a7246bf922db212", "tree": "dc0c993c3f07ddf1d1cf02a725ac3348f638d7bc", "parents": [ "e8e82b76e0312827f5ae04b573a05b02854a447e" ], "author": { "name": "Jeff Moyer", "email": "jmoyer@redhat.com", "time": "Thu Oct 19 23:28:13 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Oct 20 10:26:35 2006 -0700" }, "message": "[PATCH] direct-io: sync and invalidate file region when falling back to buffered write\n\nWhen direct-io falls back to buffered write, it will just leave the dirty data\nfloating about in pagecache, pending regular writeback.\n\nBut normal direct-io semantics are that IO is synchronous, and that it leaves\nno pagecache behind.\n\nSo change the fallback-to-buffered-write code to sync the file region and to\nthen strip away the pagecache, just as a regular direct-io write would do.\n\nAcked-by: Jeff Moyer \u003cjmoyer@redhat.com\u003e\nCc: Zach Brown \u003czach.brown@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "01de85e057328ecbef36e108673b1e81059d54c1", "tree": "0dbac62e48b2a2fa3f4ec4dea9b340ff31892a8c", "parents": [ "6da61809822c22634a3de2dcb3c60283b836a88a" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 17 19:50:36 2006 +0200" }, "committer": { "name": "Jens Axboe", "email": "axboe@nelson.home.kernel.dk", "time": "Thu Oct 19 20:53:08 2006 +0200" }, "message": "[PATCH] Add lockless helpers for remove_suid()\n\nRight now users have to grab i_mutex before calling remove_suid(), in the\nunlikely event that a call to -\u003esetattr() may be needed. Split up the\nfunction in two parts:\n\n- One to check if we need to remove suid\n- One to actually remove it\n\nThe first we can call lockless.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" } ], "next": "4a61f17378c2cdd9bd8f34ef8bd7422861d0c1f1" }