)]}' { "log": [ { "commit": "4c54005ca438a8b46dd542b497d4f0dc2ca375e8", "tree": "4274fb9dcbd94480b93fecefcf83969db53461ba", "parents": [ "b6407e863934965cdc66cbc244d811ceeb6f4d77" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Thu Jan 14 16:10:57 2010 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Jan 16 10:25:22 2010 +0100" }, "message": "rcu: 1Q2010 update for RCU documentation\n\nAdd expedited functions. Review documentation and update\nobsolete verbiage. Also fix the advice for the RCU CPU-stall\nkernel configuration parameter, and document RCU CPU-stall\nwarnings.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nCc: laijs@cn.fujitsu.com\nCc: dipankar@in.ibm.com\nCc: mathieu.desnoyers@polymtl.ca\nCc: josh@joshtriplett.org\nCc: dvhltc@us.ibm.com\nCc: niv@us.ibm.com\nCc: peterz@infradead.org\nCc: rostedt@goodmis.org\nCc: Valdis.Kletnieks@vt.edu\nCc: dhowells@redhat.com\nLKML-Reference: \u003c12635142581866-git-send-email-\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1306d603fcf1f6682f8575d1ff23631a24184b21", "tree": "8e2278cfabf874cb16bf03bd182ae75b87055741", "parents": [ "f146aabfe921006b98dfa4a78506763aedfd3206" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Fri Jan 08 14:42:56 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jan 11 09:34:06 2010 -0800" }, "message": "proc: partially revert \"procfs: provide stack information for threads\"\n\nCommit d899bf7b (procfs: provide stack information for threads) introduced\nto show stack information in /proc/{pid}/status. But it cause large\nperformance regression. Unfortunately /proc/{pid}/status is used ps\ncommand too and ps is one of most important component. Because both to\ntake mmap_sem and page table walk are heavily operation.\n\nIf many process run, the ps performance is,\n\n[before d899bf7b]\n\n% perf stat ps \u003e/dev/null\n\n Performance counter stats for \u0027ps\u0027:\n\n 4090.435806 task-clock-msecs # 0.032 CPUs\n 229 context-switches # 0.000 M/sec\n 0 CPU-migrations # 0.000 M/sec\n 234 page-faults # 0.000 M/sec\n 8587565207 cycles # 2099.425 M/sec\n 9866662403 instructions # 1.149 IPC\n 3789415411 cache-references # 926.409 M/sec\n 30419509 cache-misses # 7.437 M/sec\n\n 128.859521955 seconds time elapsed\n\n[after d899bf7b]\n\n% perf stat ps \u003e /dev/null\n\n Performance counter stats for \u0027ps\u0027:\n\n 4305.081146 task-clock-msecs # 0.028 CPUs\n 480 context-switches # 0.000 M/sec\n 2 CPU-migrations # 0.000 M/sec\n 237 page-faults # 0.000 M/sec\n 9021211334 cycles # 2095.480 M/sec\n 10605887536 instructions # 1.176 IPC\n 3612650999 cache-references # 839.160 M/sec\n 23917502 cache-misses # 5.556 M/sec\n\n 152.277819582 seconds time elapsed\n\nThus, this patch revert it. Fortunately /proc/{pid}/task/{tid}/smaps\nprovide almost same information. we can use it.\n\nCommit d899bf7b introduced two features:\n\n 1) Add the annotattion of [thread stack: xxxx] mark to\n /proc/{pid}/task/{tid}/maps.\n 2) Add StackUsage field to /proc/{pid}/status.\n\nI only revert (2), because I haven\u0027t seen (1) cause regression.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Stefani Seibold \u003cstefani@seibold.net\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a87da40875f5510866a699b72818cce09b0b9040", "tree": "bc8d18944263c8c0c76103072951c75ce77867da", "parents": [ "45d28b097280a78893ce25a5d0db41e6a2717853", "6aff43f817ddc54fcd6f0215bfba5d334b0bbbbd" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jan 04 12:28:26 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jan 04 12:28:26 2010 -0800" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:\n nilfs2: update mailing list address\n nilfs2: Storage class should be before const qualifier\n nilfs2: trivial coding style fix\n" }, { "commit": "6aff43f817ddc54fcd6f0215bfba5d334b0bbbbd", "tree": "a18c2c69c5a9c17c835f35aaca63d16e4d012947", "parents": [ "33e189bd5754dead3ece130da8e62f470f526f36" ], "author": { "name": "Ryusuke Konishi", "email": "konishi.ryusuke@lab.ntt.co.jp", "time": "Sat Jan 02 21:41:53 2010 +0900" }, "committer": { "name": "Ryusuke Konishi", "email": "konishi.ryusuke@lab.ntt.co.jp", "time": "Sat Jan 02 21:47:04 2010 +0900" }, "message": "nilfs2: update mailing list address\n\nThis replaces the list address for nilfs discussion to linux-nilfs at\nvger.kernel.org from users at nilfs.org.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n" }, { "commit": "6d3b82f2d31f22085e5711b28dddcb9fb3d97a25", "tree": "50a3325a3ff81e3583e8a3c6203b8945afc06ff3", "parents": [ "3ebfdf885acedafcadceb4007e77438479094135" ], "author": { "name": "Fang Wenqi", "email": "anton.fang@gmail.com", "time": "Thu Dec 24 17:51:42 2009 -0500" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Thu Dec 24 17:51:42 2009 -0500" }, "message": "ext4: Update documentation to correct the inode_readahead_blks option name\n\nPer commit 240799cd, the option name for readahead should be\ninode_readahead_blks, not inode_readahead.\n\nSigned-off-by: Fang Wenqi \u003cantonf@turbolinux.com.cn\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "099c2f21d8cf0724b85abb2c589d6276953781b7", "tree": "7f84a98f4b3658871408794a59d04995d5ced254", "parents": [ "66ecb92be9eb579df93add22d19843e7869f168e" ], "author": { "name": "Phil Carmody", "email": "ext-phil.2.carmody@nokia.com", "time": "Fri Dec 18 15:34:21 2009 +0200" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Wed Dec 23 11:23:43 2009 -0800" }, "message": "Driver core: driver_attribute parameters can often be const*\n\nMany struct driver_attribute descriptors are purely read-only\nstructures, and there\u0027s no need to change them. Therefore make\nthe promise not to, which will let those descriptors be put in\na ro section.\n\nSigned-off-by: Phil Carmody \u003cext-phil.2.carmody@nokia.com\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n\n" }, { "commit": "26579ab70aa0e0ea434e6e100279d2f67c094431", "tree": "1c9dfd6ed6209ecee088e3e6b600ebd7fba24acc", "parents": [ "8e9b9362266dd16255473c080d846b13e27247bf" ], "author": { "name": "Phil Carmody", "email": "ext-phil.2.carmody@nokia.com", "time": "Fri Dec 18 15:34:19 2009 +0200" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Wed Dec 23 11:23:43 2009 -0800" }, "message": "Driver core: device_attribute parameters can often be const*\n\nMost device_attributes are const, and are begging to be\nput in a ro section. However, the create and remove\nfile interfaces were failing to propagate the const promise\nwhich the only functions they call offer.\n\nSigned-off-by: Phil Carmody \u003cext-phil.2.carmody@nokia.com\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n\n" }, { "commit": "37c24b37fb2454e95136139d10bb6828967105bf", "tree": "d5c3fa61fa689567caeb2a7cb5891473e444ff7d", "parents": [ "5ac4d630eb87656bd4dc313b910776d54d88ea28", "7663dacd926584093dfc350892792054692b6cb3" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Dec 16 10:43:34 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Dec 16 10:43:34 2009 -0800" }, "message": "Merge branch \u0027for-2.6.33\u0027 of git://linux-nfs.org/~bfields/linux\n\n* \u0027for-2.6.33\u0027 of git://linux-nfs.org/~bfields/linux: (42 commits)\n nfsd: remove pointless paths in file headers\n nfsd: move most of nfsfh.h to fs/nfsd\n nfsd: remove unused field rq_reffh\n nfsd: enable V4ROOT exports\n nfsd: make V4ROOT exports read-only\n nfsd: restrict filehandles accepted in V4ROOT case\n nfsd: allow exports of symlinks\n nfsd: filter readdir results in V4ROOT case\n nfsd: filter lookup results in V4ROOT case\n nfsd4: don\u0027t continue \"under\" mounts in V4ROOT case\n nfsd: introduce export flag for v4 pseudoroot\n nfsd: let \"insecure\" flag vary by pseudoflavor\n nfsd: new interface to advertise export features\n nfsd: Move private headers to source directory\n vfs: nfsctl.c un-used nfsd #includes\n lockd: Remove un-used nfsd headers #includes\n s390: remove un-used nfsd #includes\n sparc: remove un-used nfsd #includes\n parsic: remove un-used nfsd #includes\n compat.c: Remove dependence on nfsd private headers\n ...\n" }, { "commit": "6be4b78993498c253e99b12c4d0f7684a36955e2", "tree": "0ae9cc80b96a825b1723d427c250d16edf52deeb", "parents": [ "82c1e49ccb28534b4e8b77d5f0ff553f19912d4d" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Tue Dec 15 16:47:00 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Dec 16 07:20:07 2009 -0800" }, "message": "seq_file: use proc_create() in documentation\n\nUsing create_proc_entry() + -\u003eproc_fops assignment is racy because\n-\u003eproc_fops will be NULL for some time, use proc_create() to avoid race.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Jonathan Corbet \u003ccorbet@lwn.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4614a696bd1c3a9af3a08f0e5874830a85b889d4", "tree": "0b363d89ce612ab8557d49ab8b0f49b8520ffa66", "parents": [ "7e1e0ef22c9ba9f797d7c4448feee722584bba5c" ], "author": { "name": "john stultz", "email": "johnstul@us.ibm.com", "time": "Mon Dec 14 18:00:05 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 15 08:53:24 2009 -0800" }, "message": "procfs: allow threads to rename siblings via /proc/pid/tasks/tid/comm\n\nSetting a thread\u0027s comm to be something unique is a very useful ability\nand is helpful for debugging complicated threaded applications. However\ncurrently the only way to set a thread name is for the thread to name\nitself via the PR_SET_NAME prctl.\n\nHowever, there may be situations where it would be advantageous for a\nthread dispatcher to be naming the threads its managing, rather then\nhaving the threads self-describe themselves. This sort of behavior is\navailable on other systems via the pthread_setname_np() interface.\n\nThis patch exports a task\u0027s comm via proc/pid/comm and\nproc/pid/task/tid/comm interfaces, and allows thread siblings to write to\nthese values.\n\n[akpm@linux-foundation.org: cleanups]\nSigned-off-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nCc: Arjan van de Ven \u003carjan@infradead.org\u003e\nCc: Mike Fulton \u003cfultonm@ca.ibm.com\u003e\nCc: Sean Foley \u003cSean_Foley@ca.ibm.com\u003e\nCc: Darren Hart \u003cdvhltc@us.ibm.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3126c136bc30225d7a43af741778aa50e95e467a", "tree": "71e6f0de6e1f4cde200dd632da4d2f61180289bf", "parents": [ "f4d544ee5720d336a8c64f9fd33efb888c302309", "8e0eb4011bd73d5f91b215b532f74eef478ef795" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Dec 11 15:31:13 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Dec 11 15:31:13 2009 -0800" }, "message": "Merge branch \u0027for_linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6\n\n* \u0027for_linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6: (21 commits)\n ext3: PTR_ERR return of wrong pointer in setup_new_group_blocks()\n ext3: Fix data / filesystem corruption when write fails to copy data\n ext4: Support for 64-bit quota format\n ext3: Support for vfsv1 quota format\n quota: Implement quota format with 64-bit space and inode limits\n quota: Move definition of QFMT_OCFS2 to linux/quota.h\n ext2: fix comment in ext2_find_entry about return values\n ext3: Unify log messages in ext3\n ext2: clear uptodate flag on super block I/O error\n ext2: Unify log messages in ext2\n ext3: make \"norecovery\" an alias for \"noload\"\n ext3: Don\u0027t update the superblock in ext3_statfs()\n ext3: journal all modifications in ext3_xattr_set_handle\n ext2: Explicitly assign values to on-disk enum of filetypes\n quota: Fix WARN_ON in lookup_one_len\n const: struct quota_format_ops\n ubifs: remove manual O_SYNC handling\n afs: remove manual O_SYNC handling\n kill wait_on_page_writeback_range\n vfs: Implement proper O_SYNC semantics\n ...\n" }, { "commit": "4e2ccdb0409146f8cf64a11b6ef82a9c928ced2a", "tree": "986896cc558ae23017e79ab08eb55b25c3a54549", "parents": [ "3ef884b4c04e857c283cc77ca70ad8f638d94b0e", "a694291a6211537189c6080f77f63cdabfc9b63e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Dec 11 11:49:18 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Dec 11 11:49:18 2009 -0800" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2: (49 commits)\n nilfs2: separate wait function from nilfs_segctor_write\n nilfs2: add iterator for segment buffers\n nilfs2: hide nilfs_write_info struct in segment buffer code\n nilfs2: relocate io status variables to segment buffer\n nilfs2: do not return io error for bio allocation failure\n nilfs2: use list_splice_tail or list_splice_tail_init\n nilfs2: replace mark_inode_dirty as nilfs_mark_inode_dirty\n nilfs2: delete mark_inode_dirty in nilfs_delete_entry\n nilfs2: delete mark_inode_dirty in nilfs_commit_chunk\n nilfs2: change return type of nilfs_commit_chunk\n nilfs2: split nilfs_unlink as nilfs_do_unlink and nilfs_unlink\n nilfs2: delete redundant mark_inode_dirty\n nilfs2: expand inode_inc_link_count and inode_dec_link_count\n nilfs2: delete mark_inode_dirty from nilfs_set_link\n nilfs2: delete mark_inode_dirty in nilfs_new_inode\n nilfs2: add norecovery mount option\n nilfs2: add helper to get if volume is in a valid state\n nilfs2: move recovery completion into load_nilfs function\n nilfs2: apply readahead for recovery on mount\n nilfs2: clean up get/put function of a segment usage\n ...\n" }, { "commit": "4515c3069da5bfb6f08dbfca499464b4cbdfcb50", "tree": "0f067045a0e31f126aebcf3087028639ceb237b4", "parents": [ "a5eba3f66f812cbc076a1170b3f888ad63f850b2", "fab3a549e204172236779f502eccb4f9bf0dc87d" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Dec 10 09:33:29 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Dec 10 09:33:29 2009 -0800" }, "message": "Merge branch \u0027for_linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4\n\n* \u0027for_linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (47 commits)\n ext4: Fix potential fiemap deadlock (mmap_sem vs. i_data_sem)\n ext4: Do not override ext2 or ext3 if built they are built as modules\n jbd2: Export jbd2_log_start_commit to fix ext4 build\n ext4: Fix insufficient checks in EXT4_IOC_MOVE_EXT\n ext4: Wait for proper transaction commit on fsync\n ext4: fix incorrect block reservation on quota transfer.\n ext4: quota macros cleanup\n ext4: ext4_get_reserved_space() must return bytes instead of blocks\n ext4: remove blocks from inode prealloc list on failure\n ext4: wait for log to commit when umounting\n ext4: Avoid data / filesystem corruption when write fails to copy data\n ext4: Use ext4 file system driver for ext2/ext3 file system mounts\n ext4: Return the PTR_ERR of the correct pointer in setup_new_group_blocks()\n jbd2: Add ENOMEM checking in and for jbd2_journal_write_metadata_buffer()\n ext4: remove unused parameter wbc from __ext4_journalled_writepage()\n ext4: remove encountered_congestion trace\n ext4: move_extent_per_page() cleanup\n ext4: initialize moved_len before calling ext4_move_extents()\n ext4: Fix double-free of blocks with EXT4_IOC_MOVE_EXT\n ext4: use ext4_data_block_valid() in ext4_free_blocks()\n ...\n" }, { "commit": "dee1d3b6270a7cf5cc65c493a2ab4ebaad1a1caf", "tree": "c8de16452f9a70e96456bc4bfdfdf1b4f9e3c404", "parents": [ "b918397542388de75bd86c32fbfa820e5d629fa9" ], "author": { "name": "Eric Sandeen", "email": "sandeen@redhat.com", "time": "Mon Nov 16 16:50:49 2009 -0600" }, "committer": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Thu Dec 10 15:02:52 2009 +0100" }, "message": "ext3: make \"norecovery\" an alias for \"noload\"\n\nUsers on the list recently complained about differences across\nfilesystems w.r.t. how to mount without a journal replay.\n\nIn the discussion it was noted that xfs\u0027s \"norecovery\" option is\nperhaps more descriptively accurate than \"noload,\" so let\u0027s make\nthat an alias for ext3.\n\nAlso show this status in /proc/mounts\n\nSigned-off-by: Eric Sandeen \u003csandeen@redhat.com\u003e\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\n" }, { "commit": "94004ed726f38a841cc51f97c4a3f9eda9fbd0d9", "tree": "786689e9fc9e686a5b54c1a1b1efcbb7d043b5ab", "parents": [ "6b2f3d1f769be5779b479c37800229d9a4809fc3" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Wed Sep 30 22:16:33 2009 +0200" }, "committer": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Thu Dec 10 15:02:50 2009 +0100" }, "message": "kill wait_on_page_writeback_range\n\nAll callers really want the more logical filemap_fdatawait_range interface,\nso convert them to use it and merge wait_on_page_writeback_range into\nfilemap_fdatawait_range.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\n" }, { "commit": "9f249162fbf1aea1335e13c57fd5355d00e07a47", "tree": "c85f66f94b7d63658316998ac87243690c256ec8", "parents": [ "3067e02f8f3ae2f3f02ba76400d03b8bcb4942b0" ], "author": { "name": "Thadeu Lima de Souza Cascardo", "email": "cascardo@holoscopio.com", "time": "Mon Jul 27 13:26:32 2009 -0300" }, "committer": { "name": "Boaz Harrosh", "email": "bharrosh@panasas.com", "time": "Thu Dec 10 09:59:16 2009 +0200" }, "message": "trivial: some small fixes in exofs documentation\n\nAdd exofs.txt to filesystems Documentation index and fix some typos,\nidentation and grammar.\n\nSigned-off-by: Thadeu Lima de Souza Cascardo \u003ccascardo@holoscopio.com\u003e\nSigned-off-by: Boaz Harrosh \u003cbharrosh@panasas.com\u003e\n" }, { "commit": "e3cc2226e99cfadbf300dde892c4a16d742a0856", "tree": "88eb2361112f7147d11ccc04e3a511edd7a51078", "parents": [ "bfc9dcabd513334c1d888ab66f7b7d84a3159571" ], "author": { "name": "Luis Garces-Erice", "email": "lge@ieee.org", "time": "Sun Dec 06 18:30:44 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Dec 09 18:59:52 2009 -0800" }, "message": "Doc: better explanation of procs_running\n\nthe description in Documentation/filesystems/proc.txt of the\nprocs_running entry in /proc/stat is confusing (according to that\ndescription, it looks as if procs_running could only be a number\nbetween 0 and the number of CPUs).\n\nChanged it to a more accurate description in the patch attached.\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "897e81bea1fcfcd2c5cdb720c9efdb25da9ff374", "tree": "92cf33ed2c35c1ece633f09365702f1c8e24d415", "parents": [ "c3fa27d1367fac63ac8533d6f20ea851d0d70a10", "0cf55e1ec08bb5a22e068309e2d8ba1180ab4239" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Dec 05 15:30:49 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Dec 05 15:30:49 2009 -0800" }, "message": "Merge branch \u0027sched-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (35 commits)\n sched, cputime: Introduce thread_group_times()\n sched, cputime: Cleanups related to task_times()\n Revert \"sched, x86: Optimize branch hint in __switch_to()\"\n sched: Fix isolcpus boot option\n sched: Revert 498657a478c60be092208422fefa9c7b248729c2\n sched, time: Define nsecs_to_jiffies()\n sched: Remove task_{u,s,g}time()\n sched: Introduce task_times() to replace task_{u,s}time() pair\n sched: Limit the number of scheduler debug messages\n sched.c: Call debug_show_all_locks() when dumping all tasks\n sched, x86: Optimize branch hint in __switch_to()\n sched: Optimize branch hint in context_switch()\n sched: Optimize branch hint in pick_next_task_fair()\n sched_feat_write(): Update ppos instead of file-\u003ef_pos\n sched: Sched_rt_periodic_timer vs cpu hotplug\n sched, kvm: Fix race condition involving sched_in_preempt_notifers\n sched: More generic WAKE_AFFINE vs select_idle_sibling()\n sched: Cleanup select_task_rq_fair()\n sched: Fix granularity of task_u/stime()\n sched: Fix/add missing update_rq_clock() calls\n ...\n" }, { "commit": "6e80133f7f247f313da1638af4ce30f2bac303cc", "tree": "318afcc1c1c434135849cef50e3d89be505ad011", "parents": [ "e3a41d7b99e7f97d9a50bec2a8f4eb237ce1d504", "4fa9f4ede88b4e2ff135b6e5717499d734508c62" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Nov 30 13:33:48 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Nov 30 13:33:48 2009 -0800" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-fscache\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-fscache: (31 commits)\n FS-Cache: Provide nop fscache_stat_d() if CONFIG_FSCACHE_STATS\u003dn\n SLOW_WORK: Fix GFS2 to #include \u003clinux/module.h\u003e before using THIS_MODULE\n SLOW_WORK: Fix CIFS to pass THIS_MODULE to slow_work_register_user()\n CacheFiles: Don\u0027t log lookup/create failing with ENOBUFS\n CacheFiles: Catch an overly long wait for an old active object\n CacheFiles: Better showing of debugging information in active object problems\n CacheFiles: Mark parent directory locks as I_MUTEX_PARENT to keep lockdep happy\n CacheFiles: Handle truncate unlocking the page we\u0027re reading\n CacheFiles: Don\u0027t write a full page if there\u0027s only a partial page to cache\n FS-Cache: Actually requeue an object when requested\n FS-Cache: Start processing an object\u0027s operations on that object\u0027s death\n FS-Cache: Make sure FSCACHE_COOKIE_LOOKING_UP cleared on lookup failure\n FS-Cache: Add a retirement stat counter\n FS-Cache: Handle pages pending storage that get evicted under OOM conditions\n FS-Cache: Handle read request vs lookup, creation or other cache failure\n FS-Cache: Don\u0027t delete pending pages from the page-store tracking tree\n FS-Cache: Fix lock misorder in fscache_write_op()\n FS-Cache: The object-available state can\u0027t rely on the cookie to be available\n FS-Cache: Permit cache retrieval ops to be interrupted in the initial wait phase\n FS-Cache: Use radix tree preload correctly in tracking of pages to be stored\n ...\n" }, { "commit": "16bc67edeb49b531940b2ba6c183780a1b5c472d", "tree": "71b4bc48e47e54f2c0b3126d8f81d2f31b707ea8", "parents": [ "f6630114d9198aa959ac95c131334c020038f253", "047106adcc85e3023da210143a6ab8a55df9e0fc" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Nov 26 10:50:39 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Nov 26 10:50:42 2009 +0100" }, "message": "Merge branch \u0027sched/urgent\u0027 into sched/core\n\nMerge reason: Pick up fixes that did not make it into .32.0\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "9b8b317d58084b9a44f6f33b355c4278d9f841fb", "tree": "e0df89800bf4301c4017db3cdf04a2056ec1a852", "parents": [ "78c210efdefe07131f91ed512a3308b15bb14e2f", "648f4e3e50c4793d9dbf9a09afa193631f76fa26" ], "author": { "name": "J. Bruce Fields", "email": "bfields@citi.umich.edu", "time": "Mon Nov 23 12:34:58 2009 -0500" }, "committer": { "name": "J. Bruce Fields", "email": "bfields@citi.umich.edu", "time": "Mon Nov 23 12:34:58 2009 -0500" }, "message": "Merge commit \u0027v2.6.32-rc8\u0027 into HEAD\n" }, { "commit": "931ed94430e36b9bea3904572424116092ba5663", "tree": "6ac8895f63ec90fdc2baddbd42bdc31da72e1e41", "parents": [ "648f4e3e50c4793d9dbf9a09afa193631f76fa26", "7aee47b0bb9f93baecdbea205e878fe0f155f7da" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Nov 19 20:29:05 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Nov 19 20:29:05 2009 -0800" }, "message": "Merge branch \u0027upstream-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2\n\n* \u0027upstream-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:\n ocfs2: Trivial cleanup of jbd compatibility layer removal\n ocfs2: Refresh documentation\n ocfs2: return f_fsid info in ocfs2_statfs()\n ocfs2: duplicate inline data properly during reflink.\n ocfs2: Move ocfs2_complete_reflink to the right place.\n ocfs2: Return -EINVAL when a device is not ocfs2.\n" }, { "commit": "0234576d041b9b2cc7043691ea61d2c2ca597aaa", "tree": "1fd5f397cf0a7cb010a3e383a715438e64582b65", "parents": [ "a057d2c01161444c48b12a60351ae6c7135f6e61" ], "author": { "name": "Ryusuke Konishi", "email": "konishi.ryusuke@lab.ntt.co.jp", "time": "Fri Nov 20 03:28:01 2009 +0900" }, "committer": { "name": "Ryusuke Konishi", "email": "konishi.ryusuke@lab.ntt.co.jp", "time": "Fri Nov 20 10:05:52 2009 +0900" }, "message": "nilfs2: add norecovery mount option\n\nThis adds \"norecovery\" mount option which disables temporal write\naccess to read-only mounts or snapshots during mount/recovery.\nWithout this option, write access will be even performed for those\ntypes of mounts; the temporal write access is needed to mount root\nfile system read-only after an unclean shutdown.\n\nThis option will be helpful when user wants to prevent any write\naccess to the device.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\nCc: Eric Sandeen \u003csandeen@redhat.com\u003e\n" }, { "commit": "91f1953bf3243a4215b57d8e2f317a7035924de7", "tree": "78bec48dc558ebd130c67a6144e2e981286a603c", "parents": [ "6600b9dd8e0d4a60c610f216b78d992a598bc52a" ], "author": { "name": "Jiro SEKIBA", "email": "jir@unicus.jp", "time": "Thu Nov 12 14:07:26 2009 +0900" }, "committer": { "name": "Ryusuke Konishi", "email": "konishi.ryusuke@lab.ntt.co.jp", "time": "Fri Nov 20 10:05:47 2009 +0900" }, "message": "nilfs2: Using nobarrier option instead of barrier\u003doff\n\nSince most of fs using nofoobar style option,\nmodified barrier\u003doff option as nobarrier.\n\nSigned-off-by: Jiro SEKIBA \u003cjir@unicus.jp\u003e\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n" }, { "commit": "e3bb52ae2bb9573e84c17b8e3560378d13a5c798", "tree": "529bbe0318f5bd6a2c76fb855c54b08bc85fd9e0", "parents": [ "5328e635315734d42080de9a5a1ee87bf4cae0a4" ], "author": { "name": "Eric Sandeen", "email": "sandeen@redhat.com", "time": "Thu Nov 19 14:28:50 2009 -0500" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Thu Nov 19 14:28:50 2009 -0500" }, "message": "ext4: make \"norecovery\" an alias for \"noload\"\n\nUsers on the linux-ext4 list recently complained about differences\nacross filesystems w.r.t. how to mount without a journal replay.\n\nIn the discussion it was noted that xfs\u0027s \"norecovery\" option is\nperhaps more descriptively accurate than \"noload,\" so let\u0027s make\nthat an alias for ext4.\n\nAlso show this status in /proc/mounts\n\nSigned-off-by: Eric Sandeen \u003csandeen@redhat.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "5328e635315734d42080de9a5a1ee87bf4cae0a4", "tree": "4952c04c9b1faec9a3c82a3743805efad05ed96e", "parents": [ "2bba702d4f88d7b010ec37e2527b552588404ae7" ], "author": { "name": "Eric Sandeen", "email": "sandeen@redhat.com", "time": "Thu Nov 19 14:25:42 2009 -0500" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Thu Nov 19 14:25:42 2009 -0500" }, "message": "ext4: make trim/discard optional (and off by default)\n\nIt is anticipated that when sb_issue_discard starts doing\nreal work on trim-capable devices, we may see issues. Make\nthis mount-time optional, and default it to off until we know\nthat things are working out OK.\n\nSigned-off-by: Eric Sandeen \u003csandeen@redhat.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "fee096deb4f33897937b974cb2c5168bab7935be", "tree": "c86e5ed5b3435ff0f0266f343b19f8cc7be63340", "parents": [ "d0e27b7808dc667f3015be0b6888f6d680e222c8" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:12:05 2009 +0000" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:12:05 2009 +0000" }, "message": "CacheFiles: Catch an overly long wait for an old active object\n\nCatch an overly long wait for an old, dying active object when we want to\nreplace it with a new one. The probability is that all the slow-work threads\nare hogged, and the delete can\u0027t get a look in.\n\nWhat we do instead is:\n\n (1) if there\u0027s nothing in the slow work queue, we sleep until either the dying\n object has finished dying or there is something in the slow work queue\n behind which we can queue our object.\n\n (2) if there is something in the slow work queue, we return ETIMEDOUT to\n fscache_lookup_object(), which then puts us back on the slow work queue,\n presumably behind the deletion that we\u0027re blocked by. We are then\n deferred for a while until we work our way back through the queue -\n without blocking a slow-work thread unnecessarily.\n\nA backtrace similar to the following may appear in the log without this patch:\n\n\tINFO: task kslowd004:5711 blocked for more than 120 seconds.\n\t\"echo 0 \u003e /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n\tkslowd004 D 0000000000000000 0 5711 2 0x00000080\n\t ffff88000340bb80 0000000000000046 ffff88002550d000 0000000000000000\n\t ffff88002550d000 0000000000000007 ffff88000340bfd8 ffff88002550d2a8\n\t 000000000000ddf0 00000000000118c0 00000000000118c0 ffff88002550d2a8\n\tCall Trace:\n\t [\u003cffffffff81058e21\u003e] ? trace_hardirqs_on+0xd/0xf\n\t [\u003cffffffffa011c4d8\u003e] ? cachefiles_wait_bit+0x0/0xd [cachefiles]\n\t [\u003cffffffffa011c4e1\u003e] cachefiles_wait_bit+0x9/0xd [cachefiles]\n\t [\u003cffffffff81353153\u003e] __wait_on_bit+0x43/0x76\n\t [\u003cffffffff8111ae39\u003e] ? ext3_xattr_get+0x1ec/0x270\n\t [\u003cffffffff813531ef\u003e] out_of_line_wait_on_bit+0x69/0x74\n\t [\u003cffffffffa011c4d8\u003e] ? cachefiles_wait_bit+0x0/0xd [cachefiles]\n\t [\u003cffffffff8104c125\u003e] ? wake_bit_function+0x0/0x2e\n\t [\u003cffffffffa011bc79\u003e] cachefiles_mark_object_active+0x203/0x23b [cachefiles]\n\t [\u003cffffffffa011c209\u003e] cachefiles_walk_to_object+0x558/0x827 [cachefiles]\n\t [\u003cffffffffa011a429\u003e] cachefiles_lookup_object+0xac/0x12a [cachefiles]\n\t [\u003cffffffffa00aa1e9\u003e] fscache_lookup_object+0x1c7/0x214 [fscache]\n\t [\u003cffffffffa00aafc5\u003e] fscache_object_state_machine+0xa5/0x52d [fscache]\n\t [\u003cffffffffa00ab4ac\u003e] fscache_object_slow_work_execute+0x5f/0xa0 [fscache]\n\t [\u003cffffffff81082093\u003e] slow_work_execute+0x18f/0x2d1\n\t [\u003cffffffff8108239a\u003e] slow_work_thread+0x1c5/0x308\n\t [\u003cffffffff8104c0f1\u003e] ? autoremove_wake_function+0x0/0x34\n\t [\u003cffffffff810821d5\u003e] ? slow_work_thread+0x0/0x308\n\t [\u003cffffffff8104be91\u003e] kthread+0x7a/0x82\n\t [\u003cffffffff8100beda\u003e] child_rip+0xa/0x20\n\t [\u003cffffffff8100b87c\u003e] ? restore_args+0x0/0x30\n\t [\u003cffffffff8104be17\u003e] ? kthread+0x0/0x82\n\t [\u003cffffffff8100bed0\u003e] ? child_rip+0x0/0x20\n\t1 lock held by kslowd004/5711:\n\t #0: (\u0026sb-\u003es_type-\u003ei_mutex_key#7/1){+.+.+.}, at: [\u003cffffffffa011be64\u003e] cachefiles_walk_to_object+0x1b3/0x827 [cachefiles]\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "60d543ca724be155c2b6166e36a00c80b21bd810", "tree": "90ec6edd77ddb7666dbf7069aa2e001f155cea49", "parents": [ "d461d26dde901b0523c46b0317e7fccf574a3933" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:11:45 2009 +0000" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:11:45 2009 +0000" }, "message": "FS-Cache: Start processing an object\u0027s operations on that object\u0027s death\n\nStart processing an object\u0027s operations when that object moves into the DYING\nstate as the object cannot be destroyed until all its outstanding operations\nhave completed.\n\nFurthermore, make sure that read and allocation operations handle being woken\nup on a dead object. Such events are recorded in the Allocs.abt and\nRetrvls.abt statistics as viewable through /proc/fs/fscache/stats.\n\nThe code for waiting for object activation for the read and allocation\noperations is also extracted into its own function as it is much the same in\nall cases, differing only in the stats incremented.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "201a15428bd54f83eccec8b7c64a04b8f9431204", "tree": "326fcce64ce96657253fd141a3f4a767ac95418a", "parents": [ "e3d4d28b1c8cc7c26536a50b43d86ccd39878550" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:11:35 2009 +0000" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:11:35 2009 +0000" }, "message": "FS-Cache: Handle pages pending storage that get evicted under OOM conditions\n\nHandle netfs pages that the vmscan algorithm wants to evict from the pagecache\nunder OOM conditions, but that are waiting for write to the cache. Under these\nconditions, vmscan calls the releasepage() function of the netfs, asking if a\npage can be discarded.\n\nThe problem is typified by the following trace of a stuck process:\n\n\tkslowd005 D 0000000000000000 0 4253 2 0x00000080\n\t ffff88001b14f370 0000000000000046 ffff880020d0d000 0000000000000007\n\t 0000000000000006 0000000000000001 ffff88001b14ffd8 ffff880020d0d2a8\n\t 000000000000ddf0 00000000000118c0 00000000000118c0 ffff880020d0d2a8\n\tCall Trace:\n\t [\u003cffffffffa00782d8\u003e] __fscache_wait_on_page_write+0x8b/0xa7 [fscache]\n\t [\u003cffffffff8104c0f1\u003e] ? autoremove_wake_function+0x0/0x34\n\t [\u003cffffffffa0078240\u003e] ? __fscache_check_page_write+0x63/0x70 [fscache]\n\t [\u003cffffffffa00b671d\u003e] nfs_fscache_release_page+0x4e/0xc4 [nfs]\n\t [\u003cffffffffa00927f0\u003e] nfs_release_page+0x3c/0x41 [nfs]\n\t [\u003cffffffff810885d3\u003e] try_to_release_page+0x32/0x3b\n\t [\u003cffffffff81093203\u003e] shrink_page_list+0x316/0x4ac\n\t [\u003cffffffff8109372b\u003e] shrink_inactive_list+0x392/0x67c\n\t [\u003cffffffff813532fa\u003e] ? __mutex_unlock_slowpath+0x100/0x10b\n\t [\u003cffffffff81058df0\u003e] ? trace_hardirqs_on_caller+0x10c/0x130\n\t [\u003cffffffff8135330e\u003e] ? mutex_unlock+0x9/0xb\n\t [\u003cffffffff81093aa2\u003e] shrink_list+0x8d/0x8f\n\t [\u003cffffffff81093d1c\u003e] shrink_zone+0x278/0x33c\n\t [\u003cffffffff81052d6c\u003e] ? ktime_get_ts+0xad/0xba\n\t [\u003cffffffff81094b13\u003e] try_to_free_pages+0x22e/0x392\n\t [\u003cffffffff81091e24\u003e] ? isolate_pages_global+0x0/0x212\n\t [\u003cffffffff8108e743\u003e] __alloc_pages_nodemask+0x3dc/0x5cf\n\t [\u003cffffffff81089529\u003e] grab_cache_page_write_begin+0x65/0xaa\n\t [\u003cffffffff8110f8c0\u003e] ext3_write_begin+0x78/0x1eb\n\t [\u003cffffffff81089ec5\u003e] generic_file_buffered_write+0x109/0x28c\n\t [\u003cffffffff8103cb69\u003e] ? current_fs_time+0x22/0x29\n\t [\u003cffffffff8108a509\u003e] __generic_file_aio_write+0x350/0x385\n\t [\u003cffffffff8108a588\u003e] ? generic_file_aio_write+0x4a/0xae\n\t [\u003cffffffff8108a59e\u003e] generic_file_aio_write+0x60/0xae\n\t [\u003cffffffff810b2e82\u003e] do_sync_write+0xe3/0x120\n\t [\u003cffffffff8104c0f1\u003e] ? autoremove_wake_function+0x0/0x34\n\t [\u003cffffffff810b18e1\u003e] ? __dentry_open+0x1a5/0x2b8\n\t [\u003cffffffff810b1a76\u003e] ? dentry_open+0x82/0x89\n\t [\u003cffffffffa00e693c\u003e] cachefiles_write_page+0x298/0x335 [cachefiles]\n\t [\u003cffffffffa0077147\u003e] fscache_write_op+0x178/0x2c2 [fscache]\n\t [\u003cffffffffa0075656\u003e] fscache_op_execute+0x7a/0xd1 [fscache]\n\t [\u003cffffffff81082093\u003e] slow_work_execute+0x18f/0x2d1\n\t [\u003cffffffff8108239a\u003e] slow_work_thread+0x1c5/0x308\n\t [\u003cffffffff8104c0f1\u003e] ? autoremove_wake_function+0x0/0x34\n\t [\u003cffffffff810821d5\u003e] ? slow_work_thread+0x0/0x308\n\t [\u003cffffffff8104be91\u003e] kthread+0x7a/0x82\n\t [\u003cffffffff8100beda\u003e] child_rip+0xa/0x20\n\t [\u003cffffffff8100b87c\u003e] ? restore_args+0x0/0x30\n\t [\u003cffffffff8102ef83\u003e] ? tg_shares_up+0x171/0x227\n\t [\u003cffffffff8104be17\u003e] ? kthread+0x0/0x82\n\t [\u003cffffffff8100bed0\u003e] ? child_rip+0x0/0x20\n\nIn the above backtrace, the following is happening:\n\n (1) A page storage operation is being executed by a slow-work thread\n (fscache_write_op()).\n\n (2) FS-Cache farms the operation out to the cache to perform\n (cachefiles_write_page()).\n\n (3) CacheFiles is then calling Ext3 to perform the actual write, using Ext3\u0027s\n standard write (do_sync_write()) under KERNEL_DS directly from the netfs\n page.\n\n (4) However, for Ext3 to perform the write, it must allocate some memory, in\n particular, it must allocate at least one page cache page into which it\n can copy the data from the netfs page.\n\n (5) Under OOM conditions, the memory allocator can\u0027t immediately come up with\n a page, so it uses vmscan to find something to discard\n (try_to_free_pages()).\n\n (6) vmscan finds a clean netfs page it might be able to discard (possibly the\n one it\u0027s trying to write out).\n\n (7) The netfs is called to throw the page away (nfs_release_page()) - but it\u0027s\n called with __GFP_WAIT, so the netfs decides to wait for the store to\n complete (__fscache_wait_on_page_write()).\n\n (8) This blocks a slow-work processing thread - possibly against itself.\n\nThe system ends up stuck because it can\u0027t write out any netfs pages to the\ncache without allocating more memory.\n\nTo avoid this, we make FS-Cache cancel some writes that aren\u0027t in the middle of\nactually being performed. This means that some data won\u0027t make it into the\ncache this time. To support this, a new FS-Cache function is added\nfscache_maybe_release_page() that replaces what the netfs releasepage()\nfunctions used to do with respect to the cache.\n\nThe decisions fscache_maybe_release_page() makes are counted and displayed\nthrough /proc/fs/fscache/stats on a line labelled \"VmScan\". There are four\ncounters provided: \"nos\u003dN\" - pages that weren\u0027t pending storage; \"gon\u003dN\" -\npages that were pending storage when we first looked, but weren\u0027t by the time\nwe got the object lock; \"bsy\u003dN\" - pages that we ignored as they were actively\nbeing written when we looked; and \"can\u003dN\" - pages that we cancelled the storage\nof.\n\nWhat I\u0027d really like to do is alter the behaviour of the cancellation\nheuristics, depending on how necessary it is to expel pages. If there are\nplenty of other pages that aren\u0027t waiting to be written to the cache that\ncould be ejected first, then it would be nice to hold up on immediate\ncancellation of cache writes - but I don\u0027t see a way of doing that.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "e3d4d28b1c8cc7c26536a50b43d86ccd39878550", "tree": "23f6dacd5ffdf6c6d01c411517855a41405381b9", "parents": [ "285e728b0ac55b53a673114096168d6f74930167" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:11:32 2009 +0000" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:11:32 2009 +0000" }, "message": "FS-Cache: Handle read request vs lookup, creation or other cache failure\n\nFS-Cache doesn\u0027t correctly handle the netfs requesting a read from the cache\non an object that failed or was withdrawn by the cache. A trace similar to\nthe following might be seen:\n\n\tCacheFiles: Lookup failed error -105\n\t[exe ] unexpected submission OP165afe [OBJ6cac OBJECT_LC_DYING]\n\t[exe ] objstate\u003dOBJECT_LC_DYING [OBJECT_LC_DYING]\n\t[exe ] objflags\u003d0\n\t[exe ] objevent\u003d9 [fffffffffffffffb]\n\t[exe ] ops\u003d0 inp\u003d0 exc\u003d0\n\tPid: 6970, comm: exe Not tainted 2.6.32-rc6-cachefs #50\n\tCall Trace:\n\t [\u003cffffffffa0076477\u003e] fscache_submit_op+0x3ff/0x45a [fscache]\n\t [\u003cffffffffa0077997\u003e] __fscache_read_or_alloc_pages+0x187/0x3c4 [fscache]\n\t [\u003cffffffffa00b6480\u003e] ? nfs_readpage_from_fscache_complete+0x0/0x66 [nfs]\n\t [\u003cffffffffa00b6388\u003e] __nfs_readpages_from_fscache+0x7e/0x176 [nfs]\n\t [\u003cffffffff8108e483\u003e] ? __alloc_pages_nodemask+0x11c/0x5cf\n\t [\u003cffffffffa009d796\u003e] nfs_readpages+0x114/0x1d7 [nfs]\n\t [\u003cffffffff81090314\u003e] __do_page_cache_readahead+0x15f/0x1ec\n\t [\u003cffffffff81090228\u003e] ? __do_page_cache_readahead+0x73/0x1ec\n\t [\u003cffffffff810903bd\u003e] ra_submit+0x1c/0x20\n\t [\u003cffffffff810906bb\u003e] ondemand_readahead+0x227/0x23a\n\t [\u003cffffffff81090762\u003e] page_cache_sync_readahead+0x17/0x19\n\t [\u003cffffffff8108a99e\u003e] generic_file_aio_read+0x236/0x5a0\n\t [\u003cffffffffa00937bd\u003e] nfs_file_read+0xe4/0xf3 [nfs]\n\t [\u003cffffffff810b2fa2\u003e] do_sync_read+0xe3/0x120\n\t [\u003cffffffff81354cc3\u003e] ? _spin_unlock_irq+0x2b/0x31\n\t [\u003cffffffff8104c0f1\u003e] ? autoremove_wake_function+0x0/0x34\n\t [\u003cffffffff811848e5\u003e] ? selinux_file_permission+0x5d/0x10f\n\t [\u003cffffffff81352bdb\u003e] ? thread_return+0x3e/0x101\n\t [\u003cffffffff8117d7b0\u003e] ? security_file_permission+0x11/0x13\n\t [\u003cffffffff810b3b06\u003e] vfs_read+0xaa/0x16f\n\t [\u003cffffffff81058df0\u003e] ? trace_hardirqs_on_caller+0x10c/0x130\n\t [\u003cffffffff810b3c84\u003e] sys_read+0x45/0x6c\n\t [\u003cffffffff8100ae2b\u003e] system_call_fastpath+0x16/0x1b\n\nThe object state might also be OBJECT_DYING or OBJECT_WITHDRAWING.\n\nThis should be handled by simply rejecting the new operation with ENOBUFS.\nThere\u0027s no need to log an error for it. Events of this type now appear in the\nstats file under Ops:rej.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "1bccf513ac49d44604ba1cddcc29f5886e70f1b6", "tree": "096ba75a3d02018c5f6e1857aaf1d41471733850", "parents": [ "6897e3df8fc37bd4a58bbcdef8306da7fc175584" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:11:25 2009 +0000" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:11:25 2009 +0000" }, "message": "FS-Cache: Fix lock misorder in fscache_write_op()\n\nFS-Cache has two structs internally for keeping track of the internal state of\na cached file: the fscache_cookie struct, which represents the netfs\u0027s state,\nand fscache_object struct, which represents the cache\u0027s state. Each has a\npointer that points to the other (when both are in existence), and each has a\nspinlock for pointer maintenance.\n\nSince netfs operations approach these structures from the cookie side, they get\nthe cookie lock first, then the object lock. Cache operations, on the other\nhand, approach from the object side, and get the object lock first. It is not\nthen permitted for a cache operation to get the cookie lock whilst it is\nholding the object lock lest deadlock occur; instead, it must do one of two\nthings:\n\n (1) increment the cookie usage counter, drop the object lock and then get both\n locks in order, or\n\n (2) simply hold the object lock as certain parts of the cookie may not be\n altered whilst the object lock is held.\n\nIt is also not permitted to follow either pointer without holding the lock at\nthe end you start with. To break the pointers between the cookie and the\nobject, both locks must be held.\n\nfscache_write_op(), however, violates the locking rules: It attempts to get the\ncookie lock without (a) checking that the cookie pointer is a valid pointer,\nand (b) holding the object lock to protect the cookie pointer whilst it follows\nit. This is so that it can access the pending page store tree without\ninterference from __fscache_write_page().\n\nThis is fixed by splitting the cookie lock, such that the page store tracking\ntree is protected by its own lock, and checking that the cookie pointer is\nnon-NULL before we attempt to follow it whilst holding the object lock.\n\nThe new lock is subordinate to both the cookie lock and the object lock, and so\nshould be taken after those.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "5753c441889253e4323eee85f791a1d64cf08196", "tree": "55a0de053d0593d96e99710f978277df668412d1", "parents": [ "b34df792b4e9e311db47fad27949095d0629c197" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:11:19 2009 +0000" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:11:19 2009 +0000" }, "message": "FS-Cache: Permit cache retrieval ops to be interrupted in the initial wait phase\n\nPermit the operations to retrieve data from the cache or to allocate space in\nthe cache for future writes to be interrupted whilst they\u0027re waiting for\npermission for the operation to proceed. Typically this wait occurs whilst the\ncache object is being looked up on disk in the background.\n\nIf an interruption occurs, and the operation has not yet been given the\ngo-ahead to run, the operation is dequeued and cancelled, and control returns\nto the read operation of the netfs routine with none of the requested pages\nhaving been read or in any way marked as known by the cache.\n\nThis means that the initial wait is done interruptibly rather than\nuninterruptibly.\n\nIn addition, extra stats values are made available to show the number of ops\ncancelled and the number of cache space allocations interrupted.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "52bd75fdb135d6133d878ae60c6e7e3f4ebc1cfc", "tree": "4fad4fa37ce533c520a4575e5b7df90e19c6a666", "parents": [ "4fbf4291aa15926cd4fdca0ffe9122e89d0459db" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:11:08 2009 +0000" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:11:08 2009 +0000" }, "message": "FS-Cache: Add counters for entry/exit to/from cache operation functions\n\nCount entries to and exits from cache operation table functions. Maintain\nthese as a single counter that\u0027s added to or removed from as appropriate.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "4fbf4291aa15926cd4fdca0ffe9122e89d0459db", "tree": "ec2195c39ef8117acea598af4a5c20c77f67aa0b", "parents": [ "440f0affe247e9990c8f8778f1861da4fd7d5e50" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:11:04 2009 +0000" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:11:04 2009 +0000" }, "message": "FS-Cache: Allow the current state of all objects to be dumped\n\nAllow the current state of all fscache objects to be dumped by doing:\n\n\tcat /proc/fs/fscache/objects\n\nBy default, all objects and all fields will be shown. This can be restricted\nby adding a suitable key to one of the caller\u0027s keyrings (such as the session\nkeyring):\n\n\tkeyctl add user fscache:objlist \"\u003crestrictions\u003e\" @s\n\nThe \u003crestrictions\u003e are:\n\n\tK\tShow hexdump of object key (don\u0027t show if not given)\n\tA\tShow hexdump of object aux data (don\u0027t show if not given)\n\nAnd paired restrictions:\n\n\tC\tShow objects that have a cookie\n\tc\tShow objects that don\u0027t have a cookie\n\tB\tShow objects that are busy\n\tb\tShow objects that aren\u0027t busy\n\tW\tShow objects that have pending writes\n\tw\tShow objects that don\u0027t have pending writes\n\tR\tShow objects that have outstanding reads\n\tr\tShow objects that don\u0027t have outstanding reads\n\tS\tShow objects that have slow work queued\n\ts\tShow objects that don\u0027t have slow work queued\n\nIf neither side of a restriction pair is given, then both are implied. For\nexample:\n\n\tkeyctl add user fscache:objlist KB @s\n\nshows objects that are busy, and lists their object keys, but does not dump\ntheir auxiliary data. It also implies \"CcWwRrSs\", but as \u0027B\u0027 is given, \u0027b\u0027 is\nnot implied.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "7ab8f5244d6a8695688a91c8a3f6d3f40356ff97", "tree": "cdfe242ccccce95d4c75ed32282c6aeaab120b26", "parents": [ "837711f862bb71ac263837a0f0714dd8cc4ef7ea" ], "author": { "name": "Sunil Mushran", "email": "sunil.mushran@oracle.com", "time": "Mon Nov 02 13:38:10 2009 -0800" }, "committer": { "name": "Joel Becker", "email": "joel.becker@oracle.com", "time": "Fri Nov 13 15:45:01 2009 -0800" }, "message": "ocfs2: Refresh documentation\n\nSigned-off-by: Sunil Mushran \u003csunil.mushran@oracle.com\u003e\nSigned-off-by: Joel Becker \u003cjoel.becker@oracle.com\u003e\n" }, { "commit": "ea4878a24d7e6a467d369b962bab95bd6a12cbe0", "tree": "4f937b8dfa658b16779ae2267d450b53fb035fe7", "parents": [ "8c10cbdb4af642d9a2efb45ea89251aaab905360" ], "author": { "name": "J. Bruce Fields", "email": "bfields@citi.umich.edu", "time": "Fri Nov 06 13:59:43 2009 -0500" }, "committer": { "name": "J. Bruce Fields", "email": "bfields@citi.umich.edu", "time": "Fri Nov 06 14:01:02 2009 -0500" }, "message": "nfs: move more to Documentation/filesystems/nfs\n\nOops: I missed two files in the first commit that created this\ndirectory.\n\nSigned-off-by: J. Bruce Fields \u003cbfields@citi.umich.edu\u003e\n" }, { "commit": "d4da6c9ccf648f3f1cb5bf9d981a62c253d30e28", "tree": "709f8bdc50a3a1d47632047eb3670b4a4a6ff045", "parents": [ "c35102c3e15f90fe604523a2fbffd9dc158b455a" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Nov 02 10:15:27 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Nov 02 10:15:27 2009 -0800" }, "message": "Revert \"ext4: Remove journal_checksum mount option and enable it by default\"\n\nThis reverts commit d0646f7b636d067d715fab52a2ba9c6f0f46b0d7, as\nrequested by Eric Sandeen.\n\nIt can basically cause an ext4 filesystem to miss recovery (and thus get\nmounted with errors) if the journal checksum does not match.\n\nQuoth Eric:\n\n \"My hand-wavy hunch about what is happening is that we\u0027re finding a\n bad checksum on the last partially-written transaction, which is\n not surprising, but if we have a wrapped log and we\u0027re doing the\n initial scan for head/tail, and we abort scanning on that bad\n checksum, then we are essentially running an unrecovered filesystem.\n\n But that\u0027s hand-wavy and I need to go look at the code.\n\n We lived without journal checksums on by default until now, and at\n this point they\u0027re doing more harm than good, so we should revert\n the default-changing commit until we can fix it and do some good\n power-fail testing with the fixes in place.\"\n\nSee\n\n\thttp://bugzilla.kernel.org/show_bug.cgi?id\u003d14354\n\nfor all the gory details.\n\nRequested-by: Eric Sandeen \u003csandeen@redhat.com\u003e\nCc: Theodore Tso \u003ctytso@mit.edu\u003e\nCc: Alexey Fisher \u003cbug-track@fisher-privat.net\u003e\nCc: Maxim Levitsky \u003cmaximlevitsky@gmail.com\u003e\nCc: Aneesh Kumar K.V \u003caneesh.kumar@linux.vnet.ibm.com\u003e\nCc: Mathias Burén \u003cmathias.buren@gmail.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "dc7a08166f3a5f23e79e839a8a88849bd3397c32", "tree": "2feb8aed7b6142467e6b8833fbfd9838bda69c39", "parents": [ "e343eb0d60f74547e0aeb5bd151105c2e6cfe588" ], "author": { "name": "J. Bruce Fields", "email": "bfields@citi.umich.edu", "time": "Tue Oct 27 14:41:35 2009 -0400" }, "committer": { "name": "J. Bruce Fields", "email": "bfields@citi.umich.edu", "time": "Tue Oct 27 19:34:04 2009 -0400" }, "message": "nfs: new subdir Documentation/filesystems/nfs\n\nWe\u0027re adding enough nfs documentation that it may as well have its own\nsubdirectory.\n\nAcked-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: J. Bruce Fields \u003cbfields@citi.umich.edu\u003e\n" }, { "commit": "e343eb0d60f74547e0aeb5bd151105c2e6cfe588", "tree": "92586df0daf3298262a957640e5c86679c963f41", "parents": [ "ddc04fd4d5163aee9ebdb38a56c365b602e2b7b7", "012abeea669ea49636cf952d13298bb68654146a" ], "author": { "name": "J. Bruce Fields", "email": "bfields@citi.umich.edu", "time": "Tue Oct 27 18:45:17 2009 -0400" }, "committer": { "name": "J. Bruce Fields", "email": "bfields@citi.umich.edu", "time": "Tue Oct 27 18:45:17 2009 -0400" }, "message": "Merge commit \u0027v2.6.32-rc5\u0027 into for-2.6.33\n" }, { "commit": "ce0e7b28fb75cb003cfc8d0238613aaf1c55e797", "tree": "e70bec2040045b68876d85036756bc046b5d2742", "parents": [ "0b9e31e9264f1bad89856afb96da1688292f13b4" ], "author": { "name": "Ryota Ozaki", "email": "ozaki.ryota@gmail.com", "time": "Sat Oct 24 01:20:10 2009 +0900" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Oct 25 17:31:30 2009 +0100" }, "message": "sched, cpuacct: Fix niced guest time accounting\n\nCPU time of a guest is always accounted in \u0027user\u0027 time\nwithout concern for the nice value of its counterpart\nprocess although the guest is scheduled under the nice\nvalue.\n\nThis patch fixes the defect and accounts cpu time of\na niced guest in \u0027nice\u0027 time as same as a niced process.\n\nAnd also the patch adds \u0027guest_nice\u0027 to cpuacct. The\nvalue provides niced guest cpu time which is like \u0027nice\u0027\nto \u0027user\u0027.\n\nThe original discussions can be found here:\n\n http://www.mail-archive.com/kvm@vger.kernel.org/msg23982.html\n http://www.mail-archive.com/kvm@vger.kernel.org/msg23860.html\n\nSigned-off-by: Ryota Ozaki \u003cozaki.ryota@gmail.com\u003e\nAcked-by: Avi Kivity \u003cavi@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c1256314810-7897-1-git-send-email-ozaki.ryota@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "6dbce5218298c0c77a740b3ffe97cb8c304e1710", "tree": "488ddde8139ee69b04b2033b78b700a9deb192b0", "parents": [ "96ec2e0a719fd61791dd2b0dd01325c5d20e1233" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Thu Sep 17 17:37:12 2009 +0200" }, "committer": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Tue Oct 13 00:06:43 2009 +0200" }, "message": "ext3: Update documentation about ext3 quota mount options\n\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\n" }, { "commit": "9f44fdc5188bc1a0bbcc3453d57f01e49ba868d9", "tree": "a636c14f741e662814fe95bf35f22659411f1733", "parents": [ "4c8f1cb266cba4d1052f524d04df839d8f732ace", "c1fccc0696bcaff6008c11865091f5ec4b0937ab" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Sep 30 09:32:30 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Sep 30 09:32:30 2009 -0700" }, "message": "Merge branch \u0027for_linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4\n\n* \u0027for_linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:\n ext4: Fix time encoding with extra epoch bits\n ext4: Add a stub for mpage_da_data in the trace header\n jbd2: Use tracepoints for history file\n ext4: Use tracepoints for mb_history trace file\n ext4, jbd2: Drop unneeded printks at mount and unmount time\n ext4: Handle nested ext4_journal_start/stop calls without a journal\n ext4: Make sure ext4_dirty_inode() updates the inode in no journal mode\n ext4: Avoid updating the inode table bh twice in no journal mode\n ext4: EXT4_IOC_MOVE_EXT: Check for different original and donor inodes first\n ext4: async direct IO for holes and fallocate support\n ext4: Use end_io callback to avoid direct I/O fallback to buffered I/O\n ext4: Split uninitialized extents for direct I/O\n ext4: release reserved quota when block reservation for delalloc retry\n ext4: Adjust ext4_da_writepages() to write out larger contiguous chunks\n ext4: Fix hueristic which avoids group preallocation for closed files\n ext4: Use ext4_msg() for ext4_da_writepage() errors\n ext4: Update documentation about quota mount options\n" }, { "commit": "4c8f1cb266cba4d1052f524d04df839d8f732ace", "tree": "4bf2e6bcc56dcce2c919bca969f6626c8f18b7e6", "parents": [ "9c1fe834c1bd7725b411055c66886b64c928083d", "ed248b290da7297c9b9a3ff180f5eee4db016224" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Sep 30 09:31:14 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Sep 30 09:31:14 2009 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6:\n fat: Check s_dirt in fat_sync_fs()\n vfat: change the default from shortname\u003dlower to shortname\u003dmixed\n fat/nls: Fix handling of utf8 invalid char\n" }, { "commit": "296c355cd6443d89fa251885a8d78778fe111dc4", "tree": "5cf7c8b115617dc3829a16a5969894d37b73173c", "parents": [ "90576c0b9a0b5323fc4bd7f23f49be0d234f36d1" ], "author": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Wed Sep 30 00:32:42 2009 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Wed Sep 30 00:32:42 2009 -0400" }, "message": "ext4: Use tracepoints for mb_history trace file\n\nThe /proc/fs/ext4/\u003cdev\u003e/mb_history was maintained manually, and had a\nnumber of problems: it required a largish amount of memory to be\nallocated for each ext4 filesystem, and the s_mb_history_lock\nintroduced a CPU contention problem. \n\nBy ripping out the mb_history code and replacing it with ftrace\ntracepoints, and we get more functionality: timestamps, event\nfiltering, the ability to correlate mballoc history with other ext4\ntracepoints, etc.\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "ddc04fd4d5163aee9ebdb38a56c365b602e2b7b7", "tree": "6cb3c4abed9f0cbefbd2086c6e946ac312684f61", "parents": [ "f39bde24b275ddc45df1ed835725b609e178c7a0" ], "author": { "name": "Andy Adamson", "email": "andros@netapp.com", "time": "Wed Sep 23 21:32:21 2009 -0400" }, "committer": { "name": "J. Bruce Fields", "email": "bfields@citi.umich.edu", "time": "Mon Sep 28 12:40:15 2009 -0400" }, "message": "nfsd41: use sv_max_mesg for forechannel max sizes\n\nca_maxresponsesize and ca_maxrequest size include the RPC header.\n\nsv_max_mesg is sv_max_payolad plus a page for overhead and is used in\nsvc_init_buffer to allocate server buffer space for both the request and reply.\nNote that this means we can service an RPC compound that requires\nca_maxrequestsize (MAXWRITE) or ca_max_responsesize (MAXREAD) but that we do\nnot support an RPC compound that requires both ca_maxrequestsize and\nca_maxresponsesize.\n\nSigned-off-by: Andy Adamson \u003candros@netapp.com\u003e\n[bfields@citi.umich.edu: more documentation updates]\nSigned-off-by: J. Bruce Fields \u003cbfields@citi.umich.edu\u003e\n" }, { "commit": "03d6a74b5f85ff46f20e1382982b7f4860f5fec6", "tree": "5da48fed08420dd3330b86b3e1fb266457dfc8bd", "parents": [ "17d857be649a21ca90008c6dc425d849fa83db5c" ], "author": { "name": "J. Bruce Fields", "email": "bfields@citi.umich.edu", "time": "Tue Sep 22 11:09:12 2009 -0400" }, "committer": { "name": "J. Bruce Fields", "email": "bfields@citi.umich.edu", "time": "Mon Sep 28 12:07:52 2009 -0400" }, "message": "nfsd: fix Documentation typo\n\nCaught by Benny, thanks!\n\nSigned-off-by: J. Bruce Fields \u003cbfields@citi.umich.edu\u003e\n" }, { "commit": "8365388827663bd6fb773e3623ed9023c0f82b1d", "tree": "e8f0166c3c17501c33375f9b1b70e702f7bbd65d", "parents": [ "6d7f18f6ea3a13af95bdf507fc54d42b165e1712" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Tue Sep 29 15:59:34 2009 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Tue Sep 29 15:59:34 2009 -0400" }, "message": "ext4: Update documentation about quota mount options\n\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "db16826367fefcb0ddb93d76b66adc52eb4e6339", "tree": "626224c1eb1eb79c522714591f208b4fdbdcd9d4", "parents": [ "cd6045138ed1bb5d8773e940d51c34318eef3ef2", "465fdd97cbe16ef8727221857e96ef62dd352017" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Sep 24 07:53:22 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Sep 24 07:53:22 2009 -0700" }, "message": "Merge branch \u0027hwpoison\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6\n\n* \u0027hwpoison\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6: (21 commits)\n HWPOISON: Enable error_remove_page on btrfs\n HWPOISON: Add simple debugfs interface to inject hwpoison on arbitary PFNs\n HWPOISON: Add madvise() based injector for hardware poisoned pages v4\n HWPOISON: Enable error_remove_page for NFS\n HWPOISON: Enable .remove_error_page for migration aware file systems\n HWPOISON: The high level memory error handler in the VM v7\n HWPOISON: Add PR_MCE_KILL prctl to control early kill behaviour per process\n HWPOISON: shmem: call set_page_dirty() with locked page\n HWPOISON: Define a new error_remove_page address space op for async truncation\n HWPOISON: Add invalidate_inode_page\n HWPOISON: Refactor truncate to allow direct truncating of page v2\n HWPOISON: check and isolate corrupted free pages v2\n HWPOISON: Handle hardware poisoned pages in try_to_unmap\n HWPOISON: Use bitmask/action code for try_to_unmap behaviour\n HWPOISON: x86: Add VM_FAULT_HWPOISON handling to x86 page fault handler v2\n HWPOISON: Add poison check to page fault handling\n HWPOISON: Add basic support for poisoned pages in fault handler v3\n HWPOISON: Add new SIGBUS error codes for hardware poison signals\n HWPOISON: Add support for poison swap entries v2\n HWPOISON: Export some rmap vma locking to outside world\n ...\n" }, { "commit": "16c01b20ae0572d5a1fe8059f1b4c09f79b73cbf", "tree": "922001d18936f99a9d9f12fc62aa1bb692f7e023", "parents": [ "0288b95b432b88f9daf895b526f64beeaca9ac73" ], "author": { "name": "Peng Tao", "email": "bergwolf@gmail.com", "time": "Wed Sep 23 15:56:13 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Sep 24 07:20:57 2009 -0700" }, "message": "doc/filesystems: more mount cleanups\n\nDocumentation/filesystems/sharedsubtree.txt needs updating because the\nmount command in util-linux package is well aware of shared subtree\nfeatures now. The patch also fixes two typos in sharedsubtree.txt.\n\nSigned-off-by: Peng Tao \u003cbergwolf@gmail.com\u003e\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0288b95b432b88f9daf895b526f64beeaca9ac73", "tree": "c101445baa2776f33a9a7c0688c263eba31c7bce", "parents": [ "57f1f0874f426a9bdfc5cd3f886113dd5cd17834" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Wed Sep 23 15:56:11 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Sep 24 07:20:57 2009 -0700" }, "message": "doc/filesystems: remove smount program\n\nmount(8) handles shared subtrees just fine, so remove the smount program\nfrom Documentation/filesystems/sharedsubtree.txt.\n\nFix annoying \"Lets\" -\u003e \"Let\u0027s\".\nInsert space between \u0027#\u0027 prompt and \"mount\" command.\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nAcked-by: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f4edeeb3937d5f9953b5722f1cca9573d5ffe8a0", "tree": "573e88cb99da1b8fe926e0b5615c9e8d7dc4084e", "parents": [ "60e78d2c993e58d890596d951fff77d5965adcd6" ], "author": { "name": "Abhishek Kulkarni", "email": "adkulkar@umail.iu.edu", "time": "Tue Sep 22 11:34:04 2009 -0500" }, "committer": { "name": "Eric Van Hensbergen", "email": "ericvh@strongmad.austin.ibm.com", "time": "Wed Sep 23 13:03:46 2009 -0500" }, "message": "9p: Update documentation to add fscache related bits\n\nUpdate the documentation to describe FS-Cache related\ncaching parameters. This patch also updates the pointers\nto 9p-related papers and adds pointer to the Wiki.\n\nSigned-off-by: Abhishek Kulkarni \u003cadkulkar@umail.iu.edu\u003e\nSigned-off-by: Eric Van Hensbergen \u003cericvh@gmail.com\u003e\n\n\n" }, { "commit": "1b83df308f69a5a3cc59be03bd7fb23e4bcebd8e", "tree": "8963dfcb1333dcfd1d08c243750a0699ce61c4fa", "parents": [ "c5df59136a55fe08c21d39321679cbb008479edf" ], "author": { "name": "Bartlomiej Zolnierkiewicz", "email": "bzolnier@gmail.com", "time": "Tue Sep 22 16:45:54 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Sep 23 07:39:42 2009 -0700" }, "message": "ncpfs: remove dead URL from documentation\n\nNoticed-by: Joe Perches \u003cjoe@perches.com\u003e\nCc: Petr Vandrovec \u003cvandrove@vc.cvut.cz\u003e\nSigned-off-by: Bartlomiej Zolnierkiewicz \u003cbzolnier@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": "d899bf7b55f503ba7d3d07ed27c3a37e270fa7db", "tree": "32a5ee7816b2f0cb3261dcca8102b9cafe9251bd", "parents": [ "cba8aafe1e07dfc8bae5ba78be8e02883bd34d31" ], "author": { "name": "Stefani Seibold", "email": "stefani@seibold.net", "time": "Tue Sep 22 16:45:40 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Sep 23 07:39:41 2009 -0700" }, "message": "procfs: provide stack information for threads\n\nA patch to give a better overview of the userland application stack usage,\nespecially for embedded linux.\n\nCurrently you are only able to dump the main process/thread stack usage\nwhich is showed in /proc/pid/status by the \"VmStk\" Value. But you get no\ninformation about the consumed stack memory of the the threads.\n\nThere is an enhancement in the /proc/\u003cpid\u003e/{task/*,}/*maps and which marks\nthe vm mapping where the thread stack pointer reside with \"[thread stack\nxxxxxxxx]\". xxxxxxxx is the maximum size of stack. This is a value\ninformation, because libpthread doesn\u0027t set the start of the stack to the\ntop of the mapped area, depending of the pthread usage.\n\nA sample output of /proc/\u003cpid\u003e/task/\u003ctid\u003e/maps looks like:\n\n08048000-08049000 r-xp 00000000 03:00 8312 /opt/z\n08049000-0804a000 rw-p 00001000 03:00 8312 /opt/z\n0804a000-0806b000 rw-p 00000000 00:00 0 [heap]\na7d12000-a7d13000 ---p 00000000 00:00 0\na7d13000-a7f13000 rw-p 00000000 00:00 0 [thread stack: 001ff4b4]\na7f13000-a7f14000 ---p 00000000 00:00 0\na7f14000-a7f36000 rw-p 00000000 00:00 0\na7f36000-a8069000 r-xp 00000000 03:00 4222 /lib/libc.so.6\na8069000-a806b000 r--p 00133000 03:00 4222 /lib/libc.so.6\na806b000-a806c000 rw-p 00135000 03:00 4222 /lib/libc.so.6\na806c000-a806f000 rw-p 00000000 00:00 0\na806f000-a8083000 r-xp 00000000 03:00 14462 /lib/libpthread.so.0\na8083000-a8084000 r--p 00013000 03:00 14462 /lib/libpthread.so.0\na8084000-a8085000 rw-p 00014000 03:00 14462 /lib/libpthread.so.0\na8085000-a8088000 rw-p 00000000 00:00 0\na8088000-a80a4000 r-xp 00000000 03:00 8317 /lib/ld-linux.so.2\na80a4000-a80a5000 r--p 0001b000 03:00 8317 /lib/ld-linux.so.2\na80a5000-a80a6000 rw-p 0001c000 03:00 8317 /lib/ld-linux.so.2\nafaf5000-afb0a000 rw-p 00000000 00:00 0 [stack]\nffffe000-fffff000 r-xp 00000000 00:00 0 [vdso]\n\nAlso there is a new entry \"stack usage\" in /proc/\u003cpid\u003e/{task/*,}/status\nwhich will you give the current stack usage in kb.\n\nA sample output of /proc/self/status looks like:\n\nName:\tcat\nState:\tR (running)\nTgid:\t507\nPid:\t507\n.\n.\n.\nCapBnd:\tfffffffffffffeff\nvoluntary_ctxt_switches:\t0\nnonvoluntary_ctxt_switches:\t0\nStack usage:\t12 kB\n\nI also fixed stack base address in /proc/\u003cpid\u003e/{task/*,}/stat to the base\naddress of the associated thread stack and not the one of the main\nprocess. This makes more sense.\n\n[akpm@linux-foundation.org: fs/proc/array.c now needs walk_page_range()]\nSigned-off-by: Stefani Seibold \u003cstefani@seibold.net\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: 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": "a87e84b5cdfacf11af4e8a85c4bca9793658536f", "tree": "f8e3cb2d339d8ed0e987d55f725e501730cdc81d", "parents": [ "342ff1a1b558ebbdb8cbd55ab6a63eca8b2473ca", "3c394ddaa7ea4205f933fd9b481166b2669368a9" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Sep 22 07:54:33 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Sep 22 07:54:33 2009 -0700" }, "message": "Merge branch \u0027for-2.6.32\u0027 of git://linux-nfs.org/~bfields/linux\n\n* \u0027for-2.6.32\u0027 of git://linux-nfs.org/~bfields/linux: (68 commits)\n nfsd4: nfsv4 clients should cross mountpoints\n nfsd: revise 4.1 status documentation\n sunrpc/cache: avoid variable over-loading in cache_defer_req\n sunrpc/cache: use list_del_init for the list_head entries in cache_deferred_req\n nfsd: return success for non-NFS4 nfs4_state_start\n nfsd41: Refactor create_client()\n nfsd41: modify nfsd4.1 backchannel to use new xprt class\n nfsd41: Backchannel: Implement cb_recall over NFSv4.1\n nfsd41: Backchannel: cb_sequence callback\n nfsd41: Backchannel: Setup sequence information\n nfsd41: Backchannel: Server backchannel RPC wait queue\n nfsd41: Backchannel: Add sequence arguments to callback RPC arguments\n nfsd41: Backchannel: callback infrastructure\n nfsd4: use common rpc_cred for all callbacks\n nfsd4: allow nfs4 state startup to fail\n SUNRPC: Defer the auth_gss upcall when the RPC call is asynchronous\n nfsd4: fix null dereference creating nfsv4 callback client\n nfsd4: fix whitespace in NFSPROC4_CLNT_CB_NULL definition\n nfsd41: sunrpc: add new xprt class for nfsv4.1 backchannel\n sunrpc/cache: simplify cache_fresh_locked and cache_fresh_unlocked.\n ...\n" }, { "commit": "342ff1a1b558ebbdb8cbd55ab6a63eca8b2473ca", "tree": "1f967f283dade6e03897169bb29513354f49f910", "parents": [ "50223e486cabdcf7e540e519da1f26bab3084e5d", "24ed7a97464db44592495f98cff8bcee02f92bc2" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Sep 22 07:51:45 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Sep 22 07:51:45 2009 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (34 commits)\n trivial: fix typo in aic7xxx comment\n trivial: fix comment typo in drivers/ata/pata_hpt37x.c\n trivial: typo in kernel-parameters.txt\n trivial: fix typo in tracing documentation\n trivial: add __init/__exit macros in drivers/gpio/bt8xxgpio.c\n trivial: add __init macro/ fix of __exit macro location in ipmi_poweroff.c\n trivial: remove unnecessary semicolons\n trivial: Fix duplicated word \"options\" in comment\n trivial: kbuild: remove extraneous blank line after declaration of usage()\n trivial: improve help text for mm debug config options\n trivial: doc: hpfall: accept disk device to unload as argument\n trivial: doc: hpfall: reduce risk that hpfall can do harm\n trivial: SubmittingPatches: Fix reference to renumbered step\n trivial: fix typos \"man[ae]g?ment\" -\u003e \"management\"\n trivial: media/video/cx88: add __init/__exit macros to cx88 drivers\n trivial: fix typo in CONFIG_DEBUG_FS in gcov doc\n trivial: fix missing printk space in amd_k7_smp_check\n trivial: fix typo s/ketymap/keymap/ in comment\n trivial: fix typo \"to to\" in multiple files\n trivial: fix typos in comments s/DGBU/DBGU/\n ...\n" }, { "commit": "495789a51a91cb8c015d8d77fecbac1caf20b186", "tree": "ac2a71ed40ed84f5673326aa6bf7f278b54d989a", "parents": [ "28b83c5193e7ab951e402252278f2cc79dc4d298" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Mon Sep 21 17:03:14 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Sep 22 07:17:39 2009 -0700" }, "message": "oom: make oom_score to per-process value\n\noom-killer kills a process, not task. Then oom_score should be calculated\nas per-process too. it makes consistency more and makes speed up\nselect_bad_process().\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Oleg Nesterov \u003coleg@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": "398499d5f3613c47f2143b8c54a04efb5d7a6da9", "tree": "0b337ca1d0e20caa2295c159d5c0deadf362e4a0", "parents": [ "7103ad323b1ae32bedc3267402117e2f8b45e48d" ], "author": { "name": "Moussa A. Ba", "email": "moussa.a.ba@gmail.com", "time": "Mon Sep 21 17:02:29 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Sep 22 07:17:33 2009 -0700" }, "message": "pagemap clear_refs: modify to specify anon or mapped vma clearing\n\nThe patch makes the clear_refs more versatile in adding the option to\nselect anonymous pages or file backed pages for clearing. This addition\nhas a measurable impact on user space application performance as it\ndecreases the number of pagewalks in scenarios where one is only\ninterested in a specific type of page (anonymous or file mapped).\n\nThe patch adds anonymous and file backed filters to the clear_refs interface.\n\necho 1 \u003e /proc/PID/clear_refs resets the bits on all pages\necho 2 \u003e /proc/PID/clear_refs resets the bits on anonymous pages only\necho 3 \u003e /proc/PID/clear_refs resets the bits on file backed pages only\n\nAny other value is ignored\n\nSigned-off-by: Moussa A. Ba \u003cmoussa.a.ba@gmail.com\u003e\nSigned-off-by: Jared E. Hulbert \u003cjaredeh@gmail.com\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c574358e8b48adf646f9d5ef70dc76c5d4ad9387", "tree": "1c83f7fe3831c59ba0ceca9b384ec990fcf60e5a", "parents": [ "580be0837a7a59b207c3d5c661d044d8dd0a6a30" ], "author": { "name": "Eric Dumazet", "email": "eric.dumazet@gmail.com", "time": "Mon Sep 21 17:01:06 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Sep 22 07:17:24 2009 -0700" }, "message": "proc: document `guest\u0027 column in /proc/stat\n\nWe added a new column in cpuX lines of /proc/stat, to show the amount of\ntime spent by a cpu servicing a guest, without updating\nDocumentation/filesystems/proc.txt\n\nSigned-off-by: Eric Dumazet \u003ceric.dumazet@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": "285a0f00c27a02f1223a198c88de2130e9bab059", "tree": "32b3e2a5048fd1390cd82cd17852be78bd986cd4", "parents": [ "cd68c374ea9ce202ae7c6346777d10078e243d49" ], "author": { "name": "J. Bruce Fields", "email": "bfields@citi.umich.edu", "time": "Sun Sep 20 17:01:33 2009 -0400" }, "committer": { "name": "J. Bruce Fields", "email": "bfields@citi.umich.edu", "time": "Mon Sep 21 11:13:45 2009 -0400" }, "message": "nfsd: revise 4.1 status documentation\n\nSome small updates, a caveat about the minorversion control interface,\nand an attempt to put missing features in context.\n\nSigned-off-by: J. Bruce Fields \u003cbfields@citi.umich.edu\u003e\n" }, { "commit": "411c94038594b2a3fd123d09bdec3fe2500e383d", "tree": "44b991786c7f4806b1b88f40439945b3835b6292", "parents": [ "786d8ca341a30296264bc6cebac52d37b0851647" ], "author": { "name": "Anand Gadiyar", "email": "gadiyar@ti.com", "time": "Tue Jul 07 15:24:23 2009 +0530" }, "committer": { "name": "Jiri Kosina", "email": "jkosina@suse.cz", "time": "Mon Sep 21 15:14:54 2009 +0200" }, "message": "trivial: fix typo \"for for\" in multiple files\n\ntrivial: fix typo \"for for\" in multiple files\n\nSigned-off-by: Anand Gadiyar \u003cgadiyar@ti.com\u003e\nSigned-off-by: Jiri Kosina \u003cjkosina@suse.cz\u003e\n" }, { "commit": "1358870deaf11a752a84fbd89201749aa62498e8", "tree": "7d17f77086d862ade1c12bd7defd8ea24d73040b", "parents": [ "0a80e9867db154966b2a771042e10452ac110e1e" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Fri Sep 18 12:22:29 2009 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Fri Sep 18 12:22:29 2009 -0400" }, "message": "ext4: Update documentation about quota mount options\n\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "257187362123f15d9d1e09918cf87cebbea4e786", "tree": "92b768ad3f2afeda13a2acadc6d5766090ebcc60", "parents": [ "83f786680aec8d030184f7ced1a0a3dd8ac81764" ], "author": { "name": "Andi Kleen", "email": "andi@firstfloor.org", "time": "Wed Sep 16 11:50:13 2009 +0200" }, "committer": { "name": "Andi Kleen", "email": "ak@linux.intel.com", "time": "Wed Sep 16 11:50:13 2009 +0200" }, "message": "HWPOISON: Define a new error_remove_page address space op for async truncation\n\nTruncating metadata pages is not safe right now before\nwe haven\u0027t audited all file systems.\n\nTo enable truncation only for data address space define\na new address_space callback error_remove_page.\n\nThis is used for memory_failure.c memory error handling.\n\nThis can be then set to truncate_inode_page()\n\nThis patch just defines the new operation and adds documentation.\n\nCallers and users come in followon patches.\n\nSigned-off-by: Andi Kleen \u003cak@linux.intel.com\u003e\n" }, { "commit": "a9bbd210a44102cc50b30a5f3d111dbf5f2f9cd4", "tree": "27bf5c64fbda8ed7796de52d495982fc30a56c8b", "parents": [ "2ca7d674d7ab2220707b2ada0b690c0e7c95e7ac", "6c19efb46aacf2c5043ad210b888ee58ffb848c0" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Sep 14 17:52:32 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Sep 14 17:52:32 2009 -0700" }, "message": "Merge branch \u0027docs-next\u0027 of git://git.lwn.net/linux-2.6\n\n* \u0027docs-next\u0027 of git://git.lwn.net/linux-2.6:\n Document the flex_array library.\n Doc: seq_file.txt fix wrong dd command example.\n" }, { "commit": "33f1de69312432baecb997a570b7d77c4d02d1ed", "tree": "24e9e7487ec3b892e120409aa2ac1b1263794373", "parents": [ "041d6d0be82bed7e0b87181dba5d10b8ab14afd9", "86d006365610fe6cda243d89b67d5047dca44656" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Sep 14 14:35:56 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Sep 14 14:35:56 2009 -0700" }, "message": "Merge branch \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw\n\n* \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw:\n GFS2: Whitespace fixes\n GFS2: Remove unused sysfs file\n GFS2: Be extra careful about deallocating inodes\n GFS2: Remove no_formal_ino generating code\n GFS2: Rename eattr.[ch] as xattr.[ch]\n GFS2: Clean up of extended attribute support\n GFS2: Add explanation of extended attr on-disk format\n GFS2: Add \"-o errors\u003dpanic|withdraw\" mount options\n GFS2: jumping to wrong label?\n GFS2: free disk inode which is deleted by remote node -V2\n GFS2: Add a document explaining GFS2\u0027s uevents\n GFS2: Add sysfs link to device\n GFS2: Replace assertion with proper error handling\n GFS2: Improve error handling in inode allocation\n GFS2: Add some more info to uevents\n GFS2: Add online uevent to GFS2\n" }, { "commit": "ab3bbaa8b257845e248e9a01d12a69ca245f4197", "tree": "f3054be9bd612194826ed6969d01346d329c3306", "parents": [ "332a3392188e0ad966543c87b8da2b9d246f301d", "2ecda72b49a0849ce41e7fa1fa974a245b9119f8" ], "author": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Fri Sep 11 14:59:37 2009 -0400" }, "committer": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Fri Sep 11 14:59:37 2009 -0400" }, "message": "Merge branch \u0027nfs-for-2.6.32\u0027\n" }, { "commit": "e8188807b7cd14e0a001946005f0c58f9dd9dfe6", "tree": "2fd9f54a83fad07288ac0637ac9493fe138d5858", "parents": [ "74fca6a42863ffacaf7ba6f1936a9f228950f657" ], "author": { "name": "Jesper Dangaard Brouer", "email": "hawk@comx.dk", "time": "Tue May 26 15:18:52 2009 +0200" }, "committer": { "name": "Jonathan Corbet", "email": "corbet@lwn.net", "time": "Thu Sep 10 14:33:35 2009 -0600" }, "message": "Doc: seq_file.txt fix wrong dd command example.\n\nSmall error in the \"dd\" command example, \"out\u003d\" should be \"of\u003d\".\n\nSigned-off-by: Jesper Dangaard Brouer \u003chawk@comx.dk\u003e\nSigned-off-by: Jonathan Corbet \u003ccorbet@lwn.net\u003e\n" }, { "commit": "d0646f7b636d067d715fab52a2ba9c6f0f46b0d7", "tree": "f7b3ae9510e8c789651d99fee0c22867e6ccba94", "parents": [ "a3710fd1ee8cd542c5de63cf2c39f8912031f867" ], "author": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Sat Sep 05 12:50:43 2009 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Sat Sep 05 12:50:43 2009 -0400" }, "message": "ext4: Remove journal_checksum mount option and enable it by default\n\nThere\u0027s no real cost for the journal checksum feature, and we should\nmake sure it is enabled all the time.\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n\n\n" }, { "commit": "cf481442f2e086316ed8a1b3046f00ad23632ac4", "tree": "2edd0fb64549dfb6388e39d86e8965908dfcb925", "parents": [ "788d908f2879a17e5f80924f3da2e23f1034482d", "7815f4be4026b6c5027058102ae67a4b9feffa5f" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Aug 27 12:24:08 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Aug 27 12:24:08 2009 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:\n 9p: update documentation pointers\n 9p: remove unnecessary v9fses-\u003eoptions which duplicates the mount string\n net/9p: insulate the client against an invalid error code sent by a 9p server\n 9p: Add missing cast for the error return value in v9fs_get_inode\n 9p: Remove redundant inode uid/gid assignment\n 9p: Fix possible regressions when -\u003eget_sb fails.\n 9p: Fix v9fs show_options\n 9p: Fix possible memleak in v9fs_inode_from fid.\n 9p: minor comment fixes\n 9p: Fix possible inode leak in v9fs_get_inode.\n 9p: Check for error in return value of v9fs_fid_add\n" }, { "commit": "e571cbf1a4f8d8b6cfd4898df718dae84c75a8e1", "tree": "0fc9da9692a1e63cff03053fc87cc807fab5e266", "parents": [ "96c61cbd0f30496bfa57ed80f7131a57aea3e4de" ], "author": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Wed Aug 19 18:12:27 2009 -0400" }, "committer": { "name": "Trond Myklebust", "email": "Trond.Myklebust@netapp.com", "time": "Wed Aug 19 18:22:15 2009 -0400" }, "message": "NFS: Add a dns resolver for use with NFSv4 referrals and migration\n\nThe NFSv4 and NFSv4.1 protocols both allow for the redirection of a client\nfrom one server to another in order to support filesystem migration and\nreplication. For full protocol support, we need to add the ability to\nconvert a DNS host name into an IP address that we can feed to the RPC\nclient.\n\nWe\u0027ll reuse the sunrpc cache, now that it has been converted to work with\nrpc_pipefs.\n\nSigned-off-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\n" }, { "commit": "0dc9aa845c20ed1f46c85f229591b811dffc4b3b", "tree": "8101ad58e6b263356bbf0879c79155af99ed6ddb", "parents": [ "cad2c8fd9b3afceced08838c87c520e6da417a65" ], "author": { "name": "Anton Blanchard", "email": "anton@samba.org", "time": "Wed Aug 19 16:10:16 2009 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Aug 19 10:40:13 2009 -0700" }, "message": "AFS: Documentation updates\n\nFix some issues with the AFS documentation, found when testing AFS on ppc64:\n\n- Update AFS features: reading/writing, local caching\n- Typo in kafs sysfs debug file\n- Use modprobe instead of insmod in example\n- Update IPs for grand.central.org\n\nSigned-off-by: Anton Blanchard \u003canton@samba.org\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0753ba01e126020bf0f8150934903b48935b697d", "tree": "fbfd7e2d0abbe724a8c5e0e17fb9af522ed2e097", "parents": [ "89a4eb4b66e8f4d395e14a14d262dac4d6ca52f0" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Tue Aug 18 14:11:10 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 18 16:31:13 2009 -0700" }, "message": "mm: revert \"oom: move oom_adj value\"\n\nThe commit 2ff05b2b (oom: move oom_adj value) moveed the oom_adj value to\nthe mm_struct. It was a very good first step for sanitize OOM.\n\nHowever Paul Menage reported the commit makes regression to his job\nscheduler. Current OOM logic can kill OOM_DISABLED process.\n\nWhy? His program has the code of similar to the following.\n\n\t...\n\tset_oom_adj(OOM_DISABLE); /* The job scheduler never killed by oom */\n\t...\n\tif (vfork() \u003d\u003d 0) {\n\t\tset_oom_adj(0); /* Invoked child can be killed */\n\t\texecve(\"foo-bar-cmd\");\n\t}\n\t....\n\nvfork() parent and child are shared the same mm_struct. then above\nset_oom_adj(0) doesn\u0027t only change oom_adj for vfork() child, it\u0027s also\nchange oom_adj for vfork() parent. Then, vfork() parent (job scheduler)\nlost OOM immune and it was killed.\n\nActually, fork-setting-exec idiom is very frequently used in userland program.\nWe must not break this assumption.\n\nThen, this patch revert commit 2ff05b2b and related commit.\n\nReverted commit list\n---------------------\n- commit 2ff05b2b4e (oom: move oom_adj value from task_struct to mm_struct)\n- commit 4d8b9135c3 (oom: avoid unnecessary mm locking and scanning for OOM_DISABLE)\n- commit 8123681022 (oom: only oom kill exiting tasks with attached memory)\n- commit 933b787b57 (mm: copy over oom_adj value at fork time)\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7815f4be4026b6c5027058102ae67a4b9feffa5f", "tree": "97fd44665e806c79d1cd18226422d76c83efe619", "parents": [ "4b53e4b500779230aedd5355940aeaaed0b5353b" ], "author": { "name": "Eric Van Hensbergen", "email": "ericvh@gmail.com", "time": "Mon Aug 17 16:49:44 2009 -0500" }, "committer": { "name": "Eric Van Hensbergen", "email": "ericvh@gmail.com", "time": "Mon Aug 17 16:49:44 2009 -0500" }, "message": "9p: update documentation pointers\n\nSigned-off-by: Eric Van Hensbergen \u003cericvh@gmail.com\u003e\n" }, { "commit": "0aa87445842036f88b53db7f377ad8376bd94ab8", "tree": "d1a8f3bce8197c5047f61793c0c950dfc22feba2", "parents": [ "31e54b01f3f00b595aac02e887960e5dcc575844" ], "author": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Fri Aug 14 15:24:46 2009 +0100" }, "committer": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Mon Aug 17 11:11:41 2009 +0100" }, "message": "GFS2: Add a document explaining GFS2\u0027s uevents\n\nThis will be essential reading for anybody who wants to\nunderstand how GFS2 interacts with the userland gfs_controld,\nand the details of recovery.\n\nSigned-off-by: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\nSigned-off-by: Bob Peterson \u003crpeterso@redhat.com\u003e\n" }, { "commit": "955234755ce4a2c33cfc558912aa8f2148cc1fc6", "tree": "bf9e870da7ebcf5e9459e4109fc81cb21246441f", "parents": [ "67638e4043083cdc6f10386a75fef87ba46eecb3" ], "author": { "name": "Paul Wise", "email": "pabs3@bonedaddy.net", "time": "Sat Aug 01 21:30:31 2009 +0900" }, "committer": { "name": "OGAWA Hirofumi", "email": "hirofumi@mail.parknet.co.jp", "time": "Sat Aug 01 21:35:25 2009 +0900" }, "message": "vfat: change the default from shortname\u003dlower to shortname\u003dmixed\n\nBecause, with \"shortname\u003dlower\", copying one FAT filesystem tree to\nanother FAT filesystem tree using Linux results in semantically\ndifferent filesystems. (E.g.: Filenames which were once \"all\nuppercase\" are now \"all lowercase\").\n\nSo, this changes the default of \"shortname\u003dlower\" to \"shortname\u003dmixed\".\n\nSigned-off-by: Paul Wise \u003cpabs3@bonedaddy.net\u003e\n[change fat_show_options()]\nSigned-off-by: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\n" }, { "commit": "a39ea210ec8c8f6ed381f8dafbe755c57b8f30c3", "tree": "1d86ea15f3a1eda5fa050e59324b98773f8ba0a8", "parents": [ "79f0313bfc67aa13abb931e8c12a1411f0161a68" ], "author": { "name": "Lucian Adrian Grijincu", "email": "lgrijincu@ixiacom.com", "time": "Mon Jul 27 09:06:42 2009 -0700" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Tue Jul 28 13:45:23 2009 -0700" }, "message": "driver core: documentation: make it clear that sysfs is optional\n\nThe original text suggested that sysfs is mandatory and always\ncompiled in the kernel.\n\nSigned-off-by: Lucian Adrian Grijincu \u003clgrijincu@ixiacom.com\u003e\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n\n" }, { "commit": "7e325d3a6b117c7288bfc0755410e9d9d2b71326", "tree": "37a59f2c771c31559118987d2ee91e870274ec8b", "parents": [ "f6cc746bbb3b8a8ceb8514a7906ba582607a8cf7" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Fri Jun 19 20:22:37 2009 +0200" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Jun 24 08:15:25 2009 -0400" }, "message": "update Documentation/filesystems/Locking\n\nThe rules for locking in many superblock operations has changed\nsignificantly, so update the documentation for it. Also correct some\nolder updates and ommissions.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "7e0338c0de18c50f09aea1fbef45110cf7d64a3c", "tree": "30a935c1f6eee7125a9fbb802a33292b1f7268fa", "parents": [ "df36b439c5fedefe013d4449cb6a50d15e2f4d70", "47fcb03fefee2501e79176932a4184fc24d6f8ec" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jun 22 12:55:50 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jun 22 12:55:50 2009 -0700" }, "message": "Merge branch \u0027for-2.6.31\u0027 of git://fieldses.org/git/linux-nfsd\n\n* \u0027for-2.6.31\u0027 of git://fieldses.org/git/linux-nfsd: (60 commits)\n SUNRPC: Fix the TCP server\u0027s send buffer accounting\n nfsd41: Backchannel: minorversion support for the back channel\n nfsd41: Backchannel: cleanup nfs4.0 callback encode routines\n nfsd41: Remove ip address collision detection case\n nfsd: optimise the starting of zero threads when none are running.\n nfsd: don\u0027t take nfsd_mutex twice when setting number of threads.\n nfsd41: sanity check client drc maxreqs\n nfsd41: move channel attributes from nfsd4_session to a nfsd4_channel_attr struct\n NFS: kill off complicated macro \u0027PROC\u0027\n sunrpc: potential memory leak in function rdma_read_xdr\n nfsd: minor nfsd_vfs_write cleanup\n nfsd: Pull write-gathering code out of nfsd_vfs_write\n nfsd: track last inode only in use_wgather case\n sunrpc: align cache_clean work\u0027s timer\n nfsd: Use write gathering only with NFSv2\n NFSv4: kill off complicated macro \u0027PROC\u0027\n NFSv4: do exact check about attribute specified\n knfsd: remove unreported filehandle stats counters\n knfsd: fix reply cache memory corruption\n knfsd: reply cache cleanups\n ...\n" }, { "commit": "0732f87761dbe417cb6e084b712d07e879e876ef", "tree": "afed6ca0368fd3e121fd4f43b11e32aa1e5139c0", "parents": [ "15fc204afc6feb915c400159546f646eca8ba1d9", "536fc240e7147858255bdb08e7a999a3351a9fb4" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 18 14:07:46 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 18 14:07:46 2009 -0700" }, "message": "Merge branch \u0027for_linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4\n\n* \u0027for_linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:\n jbd2: clean up jbd2_journal_try_to_free_buffers()\n ext4: Don\u0027t update ctime for non-extent-mapped inodes\n ext4: Fix up whitespace issues in fs/ext4/inode.c\n ext4: Fix 64-bit block type problem on 32-bit platforms\n ext4: teach the inode allocator to use a goal inode number\n ext4: Use a hash of the topdir directory name for the Orlov parent group\n ext4: document the \"abort\" mount option\n ext4: move the abort flag from s_mount_opts to s_mount_flags\n ext4: update the s_last_mounted field in the superblock\n ext4: change s_mount_opt to be an unsigned int\n ext4: online defrag -- Add EXT4_IOC_MOVE_EXT ioctl\n ext4: avoid unnecessary spinlock in critical POSIX ACL path\n ext3: avoid unnecessary spinlock in critical POSIX ACL path\n ext4: convert instrumentation from markers to tracepoints\n jbd2: convert instrumentation from markers to tracepoints\n" }, { "commit": "52b680c81238ea14693ab893d5d32a4d1c0a987d", "tree": "9c3ec57c06faf001b60529d088c189f4bcb77fac", "parents": [ "ef43618a47179b41e7203a624f2c7445e7da488c" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Wed Jun 17 16:26:25 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 18 13:03:45 2009 -0700" }, "message": "isofs: let mode and dmode mount options override rock ridge mode setting\n\nSo far, permissions set via \u0027mode\u0027 and/or \u0027dmode\u0027 mount options were\neffective only if the medium had no rock ridge extensions (or was mounted\nwithout them). Add \u0027overriderockmode\u0027 mount option to indicate that these\noptions should override permissions set in rock ridge extensions. Maybe\nthis should be default but the current behavior is there since mount\noptions were created so I think we should not change how they behave.\n\nCc: \u003cHans-Joachim.Baader@cjt.de\u003e\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": "ce05b2a9db1d86635a906f14427deff97eeb6183", "tree": "ea10251badb6b44bd4b136190a0d27138b974189", "parents": [ "39fe7557b4d6ab82bafaa7b92b98b806afe6ad0d" ], "author": { "name": "Michael Shields", "email": "mshields@google.com", "time": "Wed Jun 17 16:26:22 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 18 13:03:44 2009 -0700" }, "message": "Doc fix: ext2 can only have 32,000 subdirs, not 32,768\n\next2.txt says that dirs can have 32,768 subdirs, but the actual value of\nEXT2_LINK_MAX is 32000.\n\next3 is the same, but the doc does not mention it. One of ext4\u0027s features\nis to \"fix 32000 subdirectory limit\".\n\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "349888ee7b2c1ffb44c806adf6f4289ca4a6fd42", "tree": "841552b3ed0c3140be1904c82ffc0149f32491b1", "parents": [ "2f6d311080c36e30a5fa87adca550dc6b51dbfdc" ], "author": { "name": "Stefani Seibold", "email": "stefani@seibold.net", "time": "Wed Jun 17 16:26:01 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 18 13:03:41 2009 -0700" }, "message": "proc.txt: update kernel filesystem/proc.txt documentation\n\nAn update for the \"Process-Specific Subdirectories\" section to reflect the\nchanges till kernel 2.6.30.\n\nSigned-off-by: Stefani Seibold \u003cstefani@seibold.net\u003e\nCc: 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": "d3d64df21d3d0de675a0d3ffa7c10514f3644b30", "tree": "7ea3c79d8adb2c0282327f9ce63208978857eb07", "parents": [ "9d9b8fb0e5ebf4b0398e579f6061d4451fea3242" ], "author": { "name": "Keika Kobayashi", "email": "kobayashi.kk@ncos.nec.co.jp", "time": "Wed Jun 17 16:25:55 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 18 13:03:41 2009 -0700" }, "message": "proc: export statistics for softirq to /proc\n\nExport statistics for softirq in /proc/softirqs and /proc/stat.\n\n1. /proc/softirqs\nImplement /proc/softirqs which shows the number of softirq\nfor each CPU like /proc/interrupts.\n\n2. /proc/stat\nAdd the \"softirq\" line to /proc/stat.\nThis line shows the number of softirq for all cpu.\nThe first column is the total of all softirqs and\neach subsequent column is the total for particular softirq.\n\n[kosaki.motohiro@jp.fujitsu.com: remove redundant for_each_possible_cpu() loop]\nSigned-off-by: Keika Kobayashi \u003ckobayashi.kk@ncos.nec.co.jp\u003e\nReviewed-by: Hiroshi Shimamoto \u003ch-shimamoto@ct.jp.nec.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "feb72ce827b939d5228664c92c2dfed7753cae46", "tree": "de2d78ee45d9e0df234e98eea67ebc3a21525d8f", "parents": [ "65795efbd380a832ae508b04dba8f8e53f0b84d9", "5ac3455a843d2ca77333c954eea83aa4514c8199" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jun 17 08:46:57 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jun 17 08:46:57 2009 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:\n get rid of BKL in fs/sysv\n get rid of BKL in fs/minix\n get rid of BKL in fs/efs\n befs -\u003epust_super() doesn\u0027t need BKL\n Cleanup of adfs headers\n 9P doesn\u0027t need BKL in -\u003eumount_begin()\n fuse doesn\u0027t need BKL in -\u003eumount_begin()\n No instance of -\u003ebmap() needs BKL\n remove unlock_kernel() left accidentally\n ext4: avoid unnecessary spinlock in critical POSIX ACL path\n ext3: avoid unnecessary spinlock in critical POSIX ACL path\n" }, { "commit": "fe36adf47eb1f7f4972559efa30ce3d2d3f977f2", "tree": "27acbe8377f0d4a0f192daa8943c5289ac3d503d", "parents": [ "b0895513f499b8f786d292ce48589ca210ca1d6e" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Jun 16 13:35:01 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Jun 17 00:36:35 2009 -0400" }, "message": "No instance of -\u003ebmap() needs BKL\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "517d08699b250021303f9a7cf0d758b6dc0748ed", "tree": "5e5b0134c3fffb78fe9d8b1641a64ff28fdd7bbc", "parents": [ "8eeee4e2f04fc551f50c9d9847da2d73d7d33728", "a34601c5d84134055782ee031d58d82f5440e918" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jun 16 19:50:13 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jun 16 19:50:13 2009 -0700" }, "message": "Merge branch \u0027akpm\u0027\n\n* akpm: (182 commits)\n fbdev: bf54x-lq043fb: use kzalloc over kmalloc/memset\n fbdev: *bfin*: fix __dev{init,exit} markings\n fbdev: *bfin*: drop unnecessary calls to memset\n fbdev: bfin-t350mcqb-fb: drop unused local variables\n fbdev: blackfin has __raw I/O accessors, so use them in fb.h\n fbdev: s1d13xxxfb: add accelerated bitblt functions\n tcx: use standard fields for framebuffer physical address and length\n fbdev: add support for handoff from firmware to hw framebuffers\n intelfb: fix a bug when changing video timing\n fbdev: use framebuffer_release() for freeing fb_info structures\n radeon: P2G2CLK_ALWAYS_ONb tested twice, should 2nd be P2G2CLK_DAC_ALWAYS_ONb?\n s3c-fb: CPUFREQ frequency scaling support\n s3c-fb: fix resource releasing on error during probing\n carminefb: fix possible access beyond end of carmine_modedb[]\n acornfb: remove fb_mmap function\n mb862xxfb: use CONFIG_OF instead of CONFIG_PPC_OF\n mb862xxfb: restrict compliation of platform driver to PPC\n Samsung SoC Framebuffer driver: add Alpha Channel support\n atmel-lcdc: fix pixclock upper bound detection\n offb: use framebuffer_alloc() to allocate fb_info struct\n ...\n\nManually fix up conflicts due to kmemcheck in mm/slab.c\n" }, { "commit": "2ff05b2b4eac2e63d345fc731ea151a060247f53", "tree": "1840bc2d3b381eca5d39869499339b0fcc6eabbf", "parents": [ "c9e444103b5e7a5a3519f9913f59767f92e33baf" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Tue Jun 16 15:32:56 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jun 16 19:47:43 2009 -0700" }, "message": "oom: move oom_adj value from task_struct to mm_struct\n\nThe per-task oom_adj value is a characteristic of its mm more than the\ntask itself since it\u0027s not possible to oom kill any thread that shares the\nmm. If a task were to be killed while attached to an mm that could not be\nfreed because another thread were set to OOM_DISABLE, it would have\nneedlessly been terminated since there is no potential for future memory\nfreeing.\n\nThis patch moves oomkilladj (now more appropriately named oom_adj) from\nstruct task_struct to struct mm_struct. This requires task_lock() on a\ntask to check its oom_adj value to protect against exec, but it\u0027s already\nnecessary to take the lock when dereferencing the mm to find the total VM\nsize for the badness heuristic.\n\nThis fixes a livelock if the oom killer chooses a task and another thread\nsharing the same memory has an oom_adj value of OOM_DISABLE. This occurs\nbecause oom_kill_task() repeatedly returns 1 and refuses to kill the\nchosen task while select_bad_process() will repeatedly choose the same\ntask during the next retry.\n\nTaking task_lock() in select_bad_process() to check for OOM_DISABLE and in\noom_kill_task() to check for threads sharing the same memory will be\nremoved in the next patch in this series where it will no longer be\nnecessary.\n\nWriting to /proc/pid/oom_adj for a kthread will now return -EINVAL since\nthese threads are immune from oom killing already. They simply report an\noom_adj value of OOM_DISABLE.\n\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "23059a0df5fad3d83b9a21fc2696a39148f49617", "tree": "c23275fb1d4f6b4990d38c01344770c2d10f8e71", "parents": [ "4858704da75ba84ce21e6d4b3b974e8b8594c9f2", "21bea495943f9532f16e819066b340762124f5dd" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jun 16 11:29:44 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jun 16 11:29:44 2009 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6:\n fat: split fat_generic_ioctl\n FAT: add \u0027errors\u0027 mount option\n" }, { "commit": "7eef4091a653c243a87e5375c54504cc03bec4d8", "tree": "f65b77f830b2c8f7d014512badfef5df0d591ee9", "parents": [ "0a93a47f042c459f0f46942c3a920e3c81878031", "07a2039b8eb0af4ff464efd3dfd95de5c02648c6" ], "author": { "name": "J. Bruce Fields", "email": "bfields@citi.umich.edu", "time": "Mon Jun 15 18:08:07 2009 -0700" }, "committer": { "name": "J. Bruce Fields", "email": "bfields@citi.umich.edu", "time": "Mon Jun 15 18:08:07 2009 -0700" }, "message": "Merge commit \u0027v2.6.30\u0027 into for-2.6.31\n" }, { "commit": "9c7cb99a8202452d3e0440a5505c5c6d262771d9", "tree": "56d2fe83150f7bea3446b28bfa3094066c5f26b5", "parents": [ "0a8eba9b7f7aa3ad0305627c99ad4d6deedd871d", "c3a7abf06ce719a51139e62a034590be99abbc2c" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jun 15 09:13:49 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jun 15 09:13:49 2009 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2: (22 commits)\n nilfs2: support contiguous lookup of blocks\n nilfs2: add sync_page method to page caches of meta data\n nilfs2: use device\u0027s backing_dev_info for btree node caches\n nilfs2: return EBUSY against delete request on snapshot\n nilfs2: modify list of unsupported features in caveats\n nilfs2: enable sync_page method\n nilfs2: set bio unplug flag for the last bio in segment\n nilfs2: allow future expansion of metadata read out via get info ioctl\n NILFS2: Pagecache usage optimization on NILFS2\n nilfs2: remove nilfs_btree_operations from btree mapping\n nilfs2: remove nilfs_direct_operations from direct mapping\n nilfs2: remove bmap pointer operations\n nilfs2: remove useless b_low and b_high fields from nilfs_bmap struct\n nilfs2: remove pointless NULL check of bpop_commit_alloc_ptr function\n nilfs2: move get block functions in bmap.c into btree codes\n nilfs2: remove nilfs_bmap_delete_block\n nilfs2: remove nilfs_bmap_put_block\n nilfs2: remove header file for segment list operations\n nilfs2: eliminate removal list of segments\n nilfs2: add sufile function that can modify multiple segment usages\n ...\n" }, { "commit": "489f7ab6c18cdd64a2d444e056d60a0e722f4ad7", "tree": "2c7ed6a0042dc15c91ece08c5a3866f610ddca6d", "parents": [ "b322b7816908487c08b89b72f838174c37d8c836", "82d27b2b2f3a80ffa7759a49b9cba39e47df476e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Jun 14 13:46:25 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Jun 14 13:46:25 2009 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (31 commits)\n trivial: remove the trivial patch monkey\u0027s name from SubmittingPatches\n trivial: Fix a typo in comment of addrconf_dad_start()\n trivial: usb: fix missing space typo in doc\n trivial: pci hotplug: adding __init/__exit macros to sgi_hotplug\n trivial: Remove the hyphen from git commands\n trivial: fix ETIMEOUT -\u003e ETIMEDOUT typos\n trivial: Kconfig: .ko is normally not included in module names\n trivial: SubmittingPatches: fix typo\n trivial: Documentation/dell_rbu.txt: fix typos\n trivial: Fix Pavel\u0027s address in MAINTAINERS\n trivial: ftrace:fix description of trace directory\n trivial: unnecessary (void*) cast removal in sound/oss/msnd.c\n trivial: input/misc: Fix typo in Kconfig\n trivial: fix grammo in bus_for_each_dev() kerneldoc\n trivial: rbtree.txt: fix rb_entry() parameters in sample code\n trivial: spelling fix in ppc code comments\n trivial: fix typo in bio_alloc kernel doc\n trivial: Documentation/rbtree.txt: cleanup kerneldoc of rbtree.txt\n trivial: Miscellaneous documentation typo fixes\n trivial: fix typo milisecond/millisecond for documentation and source comments.\n ...\n" }, { "commit": "1904187a694713b80d74186fe058377b067cc195", "tree": "88ead633c1bdc4f6bf5590b178f73a0dadbfe547", "parents": [ "32f44d62e463f66307513e90c09b4ceeac13cc22", "f89d7eaf6c34828070f407d0e04b73127f176ec5" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jun 13 13:08:34 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jun 13 13:08:34 2009 -0700" }, "message": "Merge branch \u0027docs-next\u0027 of git://git.lwn.net/linux-2.6\n\n* \u0027docs-next\u0027 of git://git.lwn.net/linux-2.6:\n Document the debugfs API\n Documentation: Add \"how to write a good patch summary\" to SubmittingPatches\n SubmittingPatches: fix typo\n docs: Encourage better changelogs in the development process document\n Document Reported-by in SubmittingPatches\n" }, { "commit": "8a8a2050c844d9de224ff591e91bda3f77bd6eda", "tree": "39aa31e7061526c197f62cae2f80bbd888fad070", "parents": [ "4ab2f15b7f709c3626a7eed075a7225b4c775c7e" ], "author": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Sat Jun 13 10:08:59 2009 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Sat Jun 13 10:08:59 2009 -0400" }, "message": "ext4: document the \"abort\" mount option\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n" }, { "commit": "19f594600110377ec4037fdf7fb93a25ec516212", "tree": "bf88707b65f0138b754d896300976e474098a50d", "parents": [ "19af5cdb7c79ff5ec96a99893ffb7f894f4a3dc1" ], "author": { "name": "Matt LaPlante", "email": "kernel1@cyberdogtech.com", "time": "Mon Apr 27 15:06:31 2009 +0200" }, "committer": { "name": "Jiri Kosina", "email": "jkosina@suse.cz", "time": "Fri Jun 12 18:01:47 2009 +0200" }, "message": "trivial: Miscellaneous documentation typo fixes\n\nFix various typos in documentation txts.\n\nSigned-off-by: Matt LaPlante \u003ckernel1@cyberdogtech.com\u003e\nSigned-off-by: Jiri Kosina \u003cjkosina@suse.cz\u003e\n" }, { "commit": "0a33f80a8373eca7f4bea3961d1346c3815fa5ed", "tree": "16b0c0364340416f1e27bebdd4042ffe0e6fef8f", "parents": [ "c29f5ec022451546be1e0b24c330a0368e63e4a7", "003dec8913d6bebb4ecc989ec04a235cf38f5ea9" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 11 10:36:12 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 11 10:36:12 2009 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: (25 commits)\n GFS2: Merge gfs2_get_sb into gfs2_get_sb_meta\n GFS2: Fix cache coherency between truncate and O_DIRECT read\n GFS2: Fix locking issue mounting gfs2meta fs\n GFS2: Remove unused variable\n GFS2: smbd proccess hangs with flock() call.\n GFS2: Remove args subdir from gfs2 sysfs files\n GFS2: Remove lockstruct subdir from gfs2 sysfs files\n GFS2: Move gfs2_unlink_ok into ops_inode.c\n GFS2: Move gfs2_readlinki into ops_inode.c\n GFS2: Move gfs2_rmdiri into ops_inode.c\n GFS2: Merge mount.c and ops_super.c into super.c\n GFS2: Clean up some file names\n GFS2: Be more aggressive in reclaiming unlinked inodes\n GFS2: Add a rgrp bitmap full flag\n GFS2: Improve resource group error handling\n GFS2: Don\u0027t warn when delete inode fails on ro filesystem\n GFS2: Update docs\n GFS2: Umount recovery race fix\n GFS2: Remove a couple of unused sysfs entries\n GFS2: Add commit\u003d mount option\n ...\n" }, { "commit": "fb6e7113ae3ba6c7d0de77c6ccbcfa659899ff0f", "tree": "442fbb9b6e30546fde4659180e9aa1cecd658f73", "parents": [ "e85dc1d5295779d2e6d973b7ed524d6bd3825a3f" ], "author": { "name": "Ryusuke Konishi", "email": "konishi.ryusuke@lab.ntt.co.jp", "time": "Sat May 30 11:27:17 2009 +0900" }, "committer": { "name": "Ryusuke Konishi", "email": "konishi.ryusuke@lab.ntt.co.jp", "time": "Wed Jun 10 23:41:11 2009 +0900" }, "message": "nilfs2: modify list of unsupported features in caveats\n\nThis clarifies missing features of nilfs as a regular filesystem.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n" }, { "commit": "f89d7eaf6c34828070f407d0e04b73127f176ec5", "tree": "c4635afb9af5ed67688a49645d7c9b6dd5bf5f6f", "parents": [ "2ae19acaa50a09c1099956efb895c0aca74ab050" ], "author": { "name": "Jonathan Corbet", "email": "corbet@lwn.net", "time": "Thu Jun 04 16:35:25 2009 -0600" }, "committer": { "name": "Jonathan Corbet", "email": "corbet@lwn.net", "time": "Sat Jun 06 10:28:14 2009 -0600" }, "message": "Document the debugfs API\n\nThis is an updated document covering the internal API for the debugfs\nfilesystem. Thanks to Shen Feng for suggesting that I put this text here\nand noting that the old LWN version was rather out of date.\n\nAcked-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\nReported-by: Shen Feng \u003cshen@cn.fujitsu.com\u003e\nSigned-off-by: Jonathan Corbet \u003ccorbet@lwn.net\u003e\n" }, { "commit": "85c7859190c4197a7c34066db14c25903c401187", "tree": "9cf54e894f52eb1edfd35daeff66bfb5697b8360", "parents": [ "9fa7eb283c5cdc2b0f4a8cfe6387ed82e5e9a3d3" ], "author": { "name": "Denis Karpov", "email": "ext-denis.2.karpov@nokia.com", "time": "Thu Jun 04 02:34:22 2009 +0900" }, "committer": { "name": "OGAWA Hirofumi", "email": "hirofumi@mail.parknet.co.jp", "time": "Thu Jun 04 02:34:51 2009 +0900" }, "message": "FAT: add \u0027errors\u0027 mount option\n\nOn severe errors FAT remounts itself in read-only mode. Allow to\nspecify FAT fs desired behavior through \u0027errors\u0027 mount option:\npanic, continue or remount read-only.\n\n`mount -t [fat|vfat] -o errors\u003d[panic,remount-ro,continue] \\\n\t\u003cbdev\u003e \u003cmount point\u003e`\n\nThis is analog to ext2 fs \u0027errors\u0027 mount option.\n\nSigned-off-by: Denis Karpov \u003cext-denis.2.karpov@nokia.com\u003e\nSigned-off-by: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\n" }, { "commit": "98f32602d42951e61a059685f842aa7d778ffab0", "tree": "283a357f417f2ddf99a783dddeac8257e9342de3", "parents": [ "ecca1c5e3a55d1581be9aa9144642c67de70e33b" ], "author": { "name": "Hugh Dickins", "email": "hugh.dickins@tiscali.co.uk", "time": "Thu May 21 20:33:58 2009 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 21 13:14:32 2009 -0700" }, "message": "hugh: update email address\n\nMy old address will shut down in a few days time: remove it from the tree,\nand add a tmpfs (shmem filesystem) maintainer entry with the new address.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Hugh Dickins \u003chugh.dickins@tiscali.co.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e9ccb73ab57ada469602506496c42e5b4468ac3e", "tree": "3fe274b76ca7a259e131512443cabb14930c4e5c", "parents": [ "fe64d517df0970a68417184a12fcd4ba0589cc28" ], "author": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Tue May 19 10:23:23 2009 +0100" }, "committer": { "name": "Steven Whitehouse", "email": "swhiteho@redhat.com", "time": "Tue May 19 10:23:23 2009 +0100" }, "message": "GFS2: Update docs\n\nUpdate a few things which were out of date, and fix a typo.\n\nSigned-off-by: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\n" }, { "commit": "b827e496c893de0c0f142abfaeb8730a2fd6b37f", "tree": "a86aecd5d811f9306b9662ceb5a5a45091b62b97", "parents": [ "a5fc1abe438b87a9d128beebc377f78e2681a76d" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Thu Apr 30 15:08:16 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat May 02 15:36:09 2009 -0700" }, "message": "mm: close page_mkwrite races\n\nChange page_mkwrite to allow implementations to return with the page\nlocked, and also change it\u0027s callers (in page fault paths) to hold the\nlock until the page is marked dirty. This allows the filesystem to have\nfull control of page dirtying events coming from the VM.\n\nRather than simply hold the page locked over the page_mkwrite call, we\ncall page_mkwrite with the page unlocked and allow callers to return with\nit locked, so filesystems can avoid LOR conditions with page lock.\n\nThe problem with the current scheme is this: a filesystem that wants to\nassociate some metadata with a page as long as the page is dirty, will\nperform this manipulation in its -\u003epage_mkwrite. It currently then must\nreturn with the page unlocked and may not hold any other locks (according\nto existing page_mkwrite convention).\n\nIn this window, the VM could write out the page, clearing page-dirty. The\nfilesystem has no good way to detect that a dirty pte is about to be\nattached, so it will happily write out the page, at which point, the\nfilesystem may manipulate the metadata to reflect that the page is no\nlonger dirty.\n\nIt is not always possible to perform the required metadata manipulation in\n-\u003eset_page_dirty, because that function cannot block or fail. The\nfilesystem may need to allocate some data structure, for example.\n\nAnd the VM cannot mark the pte dirty before page_mkwrite, because\npage_mkwrite is allowed to fail, so we must not allow any window where the\npage could be written to if page_mkwrite does fail.\n\nThis solution of holding the page locked over the 3 critical operations\n(page_mkwrite, setting the pte dirty, and finally setting the page dirty)\ncloses out races nicely, preventing page cleaning for writeout being\ninitiated in that window. This provides the filesystem with a strong\nsynchronisation against the VM here.\n\n- Sage needs this race closed for ceph filesystem.\n- Trond for NFS (http://bugzilla.kernel.org/show_bug.cgi?id\u003d12913).\n- I need it for fsblock.\n- I suspect other filesystems may need it too (eg. btrfs).\n- I have converted buffer.c to the new locking. Even simple block allocation\n under dirty pages might be susceptible to i_size changing under partial page\n at the end of file (we also have a buffer.c-side problem here, but it cannot\n be fixed properly without this patch).\n- Other filesystems (eg. NFS, maybe btrfs) will need to change their\n page_mkwrite functions themselves.\n\n[ This also moves page_mkwrite another step closer to fault, which should\n eventually allow page_mkwrite to be moved into -\u003efault, and thus avoiding a\n filesystem calldown and page lock/unlock cycle in __do_fault. ]\n\n[akpm@linux-foundation.org: fix derefs of NULL -\u003emapping]\nCc: Sage Weil \u003csage@newdream.net\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Valdis Kletnieks \u003cValdis.Kletnieks@vt.edu\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" } ], "next": "4ba170c2bb77713e999ac6fb9ffe6ddd99d2f25a" }