)]}'
{
  "log": [
    {
      "commit": "208bca0860406d16398145ddd950036a737c3c9d",
      "tree": "7797a16c17d8bd155120126fa7976727fc6de013",
      "parents": [
        "6aad3738f6a79fd0ca480eaceefe064cc471f6eb",
        "0e175a1835ffc979e55787774e58ec79e41957d7"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sun Nov 06 19:02:23 2011 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sun Nov 06 19:02:23 2011 -0800"
      },
      "message": "Merge branch \u0027writeback-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux\n\n* \u0027writeback-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux:\n  writeback: Add a \u0027reason\u0027 to wb_writeback_work\n  writeback: send work item to queue_io, move_expired_inodes\n  writeback: trace event balance_dirty_pages\n  writeback: trace event bdi_dirty_ratelimit\n  writeback: fix ppc compile warnings on do_div(long long, unsigned long)\n  writeback: per-bdi background threshold\n  writeback: dirty position control - bdi reserve area\n  writeback: control dirty pause time\n  writeback: limit max dirty pause time\n  writeback: IO-less balance_dirty_pages()\n  writeback: per task dirty rate limit\n  writeback: stabilize bdi-\u003edirty_ratelimit\n  writeback: dirty rate control\n  writeback: add bg_threshold parameter to __bdi_update_bandwidth()\n  writeback: dirty position control\n  writeback: account per-bdi accumulated dirtied pages\n"
    },
    {
      "commit": "72a2ebd8bc62e6658513d3b2a1119e91c3ea6810",
      "tree": "fb786e71f96ebb04bedc77f4eb3bbac41c15c6c5",
      "parents": [
        "584cff54e1ff8f59d5109dc8093efedff8bcc375"
      ],
      "author": {
        "name": "Tao Ma",
        "email": "boyu.mt@taobao.com",
        "time": "Mon Oct 31 17:09:00 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Oct 31 17:30:49 2011 -0700"
      },
      "message": "fs/buffer.c: add device information for error output in __find_get_block_slow()\n\nOn the ext4 mailing list[1], we got some report about errors in\n__find_get_block_slow(), but the information is very limited.\n\nIf the device information is given, we can know the name of the sick\nvolume.  Futhermore, we can get the corresponding status of that\nblock(group, inode block etc) by analyzing the disk layout.\n\n[1] http://marc.info/?l\u003dlinux-ext4\u0026m\u003d131379831421147\u0026w\u003d2\n\nSigned-off-by: Tao Ma \u003cboyu.mt@taobao.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Theodore Ts\u0027o \u003ctytso@mit.edu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "0e175a1835ffc979e55787774e58ec79e41957d7",
      "tree": "6ec4b65a8de4e9d1c12d26a1079079ed81d79450",
      "parents": [
        "ad4e38dd6a33bb3a4882c487d7abe621e583b982"
      ],
      "author": {
        "name": "Curt Wohlgemuth",
        "email": "curtw@google.com",
        "time": "Fri Oct 07 21:54:10 2011 -0600"
      },
      "committer": {
        "name": "Wu Fengguang",
        "email": "fengguang.wu@intel.com",
        "time": "Mon Oct 31 00:33:36 2011 +0800"
      },
      "message": "writeback: Add a \u0027reason\u0027 to wb_writeback_work\n\nThis creates a new \u0027reason\u0027 field in a wb_writeback_work\nstructure, which unambiguously identifies who initiates\nwriteback activity.  A \u0027wb_reason\u0027 enumeration has been\nadded to writeback.h, to enumerate the possible reasons.\n\nThe \u0027writeback_work_class\u0027 and tracepoint event class and\n\u0027writeback_queue_io\u0027 tracepoints are updated to include the\nsymbolic \u0027reason\u0027 in all trace events.\n\nAnd the \u0027writeback_inodes_sbXXX\u0027 family of routines has had\na wb_stats parameter added to them, so callers can specify\nwhy writeback is being started.\n\nAcked-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Curt Wohlgemuth \u003ccurtw@google.com\u003e\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\n"
    },
    {
      "commit": "814e1d25a59662f9552e6dc1305d1df3616fc87e",
      "tree": "b9ecde84785c4ff56fd7fa30ae0b34357028e2dd",
      "parents": [
        "39be79c16f2b8eb07dd0d4e965cddfe39cc0534a"
      ],
      "author": {
        "name": "Wang Sheng-Hui",
        "email": "shhuiw@gmail.com",
        "time": "Thu Sep 01 08:22:57 2011 +0800"
      },
      "committer": {
        "name": "Christoph Hellwig",
        "email": "hch@serles.lst.de",
        "time": "Fri Oct 28 13:55:08 2011 +0200"
      },
      "message": "cleanup: vfs: small comment fix for block_invalidatepage\n\nThe patch is aganist 3.1-rc3.\n\nSigned-off-by: Wang Sheng-Hui \u003cshhuiw@gmail.com\u003e\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\n"
    },
    {
      "commit": "f9f07b6c1372b1436aa6b45333445b443ffd8c95",
      "tree": "b8bd034260b2c1eee2ca585397ee598079ac261b",
      "parents": [
        "5e7f23373bf9a853e9256e81e86724cdd0a33c29"
      ],
      "author": {
        "name": "Jan Kara",
        "email": "jack@suse.cz",
        "time": "Tue Jun 14 00:58:27 2011 +0200"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Thu Jun 16 11:44:46 2011 -0400"
      },
      "message": "vfs: Fix data corruption after failed write in __block_write_begin()\n\nI\u0027ve got a report of a file corruption from fsxlinux on ext3. The important\noperations to the page were:\nmapwrite to a hole\npartial write to the page\nread - found the page zeroed from the end of the normal write\n\nThe culprit seems to be that if get_block() fails in __block_write_begin()\n(e.g. transient ENOSPC in ext3), the function does ClearPageUptodate(page).\nThus when we retry the write, the logic in __block_write_begin() thinks zeroing\nof the page is needed and overwrites old data.  In fact, I don\u0027t see why we\nshould ever need to zero the uptodate bit here - either the page was uptodate\nwhen we entered __block_write_begin() and it should stay so when we leave it,\nor it was not uptodate and noone had right to set it uptodate during\n__block_write_begin() so it remains !uptodate when we leave as well. So just\nremove clearing of the bit.\n\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "d76ee18a8551e33ad7dbd55cac38bc7b094f3abb",
      "tree": "b65a21c32f7ebd9213886a3a9181ed946ba69777",
      "parents": [
        "3d08bcc887a1c8d12be8d81f747ffa2e8a44b67b"
      ],
      "author": {
        "name": "Darrick J. Wong",
        "email": "djwong@us.ibm.com",
        "time": "Fri May 27 12:23:41 2011 -0700"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sat May 28 01:03:21 2011 -0400"
      },
      "message": "fs: block_page_mkwrite should wait for writeback to finish\n\nFor filesystems such as nilfs2 and xfs that use block_page_mkwrite, modify that\nfunction to wait for pending writeback before allowing the page to become\nwritable.  This is needed to stabilize pages during writeback for those two\nfilesystems.\n\nSigned-off-by: Darrick J. Wong \u003cdjwong@us.ibm.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "f8d613e2a665bf1be9628a3c3f9bafe7599b32c0",
      "tree": "98d4da8d0e1a5fb1d9064626b4b96d95ccf26375",
      "parents": [
        "8a0599dd2471f2a2e409498c08a0ab339057ad06",
        "5bc20fc59706214d9591c11e1938a629d3538c12"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu May 26 10:50:56 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu May 26 10:50:56 2011 -0700"
      },
      "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/djm/tmem\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/djm/tmem:\n  xen: cleancache shim to Xen Transcendent Memory\n  ocfs2: add cleancache support\n  ext4: add cleancache support\n  btrfs: add cleancache support\n  ext3: add cleancache support\n  mm/fs: add hooks to support cleancache\n  mm: cleancache core ops functions and config\n  fs: add field to superblock to support cleancache\n  mm/fs: cleancache documentation\n\nFix up trivial conflict in fs/btrfs/extent_io.c due to includes\n"
    },
    {
      "commit": "c515e1fd361c2a08a9c2eb139396ec30a4f477dc",
      "tree": "cb1a27f27f065400fc79dc287594843e169d74ab",
      "parents": [
        "077b1f83a69d94f2918630a882d74939baca0bce"
      ],
      "author": {
        "name": "Dan Magenheimer",
        "email": "dan.magenheimer@oracle.com",
        "time": "Thu May 26 10:01:43 2011 -0600"
      },
      "committer": {
        "name": "Dan Magenheimer",
        "email": "dan.magenheimer@oracle.com",
        "time": "Thu May 26 10:01:43 2011 -0600"
      },
      "message": "mm/fs: add hooks to support cleancache\n\nThis fourth patch of eight in this cleancache series provides the\ncore hooks in VFS for: initializing cleancache per filesystem;\ncapturing clean pages reclaimed by page cache; attempting to get\npages from cleancache before filesystem read; and ensuring coherency\nbetween pagecache, disk, and cleancache.  Note that the placement\nof these hooks was stable from 2.6.18 to 2.6.38; a minor semantic\nchange was required due to a patchset in 2.6.39.\n\nAll hooks become no-ops if CONFIG_CLEANCACHE is unset, or become\na check of a boolean global if CONFIG_CLEANCACHE is set but no\ncleancache \"backend\" has claimed cleancache_ops.\n\nDetails and a FAQ can be found in Documentation/vm/cleancache.txt\n\n[v8: minchan.kim@gmail.com: adapt to new remove_from_page_cache function]\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\nSigned-off-by: Dan Magenheimer \u003cdan.magenheimer@oracle.com\u003e\nReviewed-by: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nReviewed-by: Konrad Rzeszutek Wilk \u003ckonrad.wilk@oracle.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nCc: Matthew Wilcox \u003cmatthew@wil.cx\u003e\nCc: Nick Piggin \u003cnpiggin@kernel.dk\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Rik Van Riel \u003criel@redhat.com\u003e\nCc: Jan Beulich \u003cJBeulich@novell.com\u003e\nCc: Andreas Dilger \u003cadilger@sun.com\u003e\nCc: Ted Ts\u0027o \u003ctytso@mit.edu\u003e\nCc: Mark Fasheh \u003cmfasheh@suse.com\u003e\nCc: Joel Becker \u003cjoel.becker@oracle.com\u003e\nCc: Nitin Gupta \u003cngupta@vflare.org\u003e\n"
    },
    {
      "commit": "ea13a86463fd0c26c2c209c53dc46b8eff81bad4",
      "tree": "405ca6ff2b6ca3078a1023814c1ea7525cf03797",
      "parents": [
        "24da4fab5a617ecbf0f0c64e7ba7703383faa411"
      ],
      "author": {
        "name": "Jan Kara",
        "email": "jack@suse.cz",
        "time": "Tue May 24 00:23:35 2011 +0200"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Thu May 26 07:26:45 2011 -0400"
      },
      "message": "vfs: Block mmapped writes while the fs is frozen\n\nWe should not allow file modification via mmap while the filesystem is\nfrozen. So block in block_page_mkwrite() while the filesystem is frozen.\nWe cannot do the blocking wait in __block_page_mkwrite() since e.g. ext4\nwill want to call that function with transaction started in some cases\nand that would deadlock. But we can at least do the non-blocking reliable\ncheck in __block_page_mkwrite() which is the hardest part anyway.\n\nWe have to check for frozen filesystem with the page marked dirty and under\npage lock with which we then return from -\u003epage_mkwrite(). Only that way we\ncannot race with writeback done by freezing code - either we mark the page\ndirty after the writeback has started, see freezing in progress and block, or\nwriteback will wait for our page lock which is released only when the fault is\ndone and then writeback will writeout and writeprotect the page again.\n\nReviewed-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "24da4fab5a617ecbf0f0c64e7ba7703383faa411",
      "tree": "28f62d2e0e69b11765f021db53c327b56f741576",
      "parents": [
        "7c6e984dfca8ff5b04d359a59b24f39a691b87d3"
      ],
      "author": {
        "name": "Jan Kara",
        "email": "jack@suse.cz",
        "time": "Tue May 24 00:23:34 2011 +0200"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Thu May 26 07:26:44 2011 -0400"
      },
      "message": "vfs: Create __block_page_mkwrite() helper passing error values back\n\nCreate __block_page_mkwrite() helper which does all what block_page_mkwrite()\ndoes except that it passes back errors from __block_write_begin /\nblock_commit_write calls.\n\nReviewed-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "d39dd11c3e6a7af5c20bfac40594db36cf270f42",
      "tree": "6384e07fa2f347b286cde9754c4507b5a738ab47",
      "parents": [
        "30f5b28e7f937608e0407edaa459cc8161de81d9",
        "0b2d0724e26a335cd326eb7ad552c109116a8795"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Mar 24 19:01:30 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Mar 24 19:01:30 2011 -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  fs: simplify iget \u0026 friends\n  fs: pull inode-\u003ei_lock up out of writeback_single_inode\n  fs: rename inode_lock to inode_hash_lock\n  fs: move i_wb_list out from under inode_lock\n  fs: move i_sb_list out from under inode_lock\n  fs: remove inode_lock from iput_final and prune_icache\n  fs: Lock the inode LRU list separately\n  fs: factor inode disposal\n  fs: protect inode-\u003ei_state with inode-\u003ei_lock\n  autofs4: Do not potentially dereference NULL pointer returned by fget() in autofs_dev_ioctl_setpipefd()\n  autofs4 - remove autofs4_lock\n  autofs4 - fix d_manage() return on rcu-walk\n  autofs4 - fix autofs4_expire_indirect() traversal\n  autofs4 - fix dentry leak in autofs4_expire_direct()\n  autofs4 - reinstate last used update on access\n  vfs - check non-mountpoint dentry might block in __follow_mount_rcu()\n"
    },
    {
      "commit": "250df6ed274d767da844a5d9f05720b804240197",
      "tree": "b74f49a86c4451d9e3e82f90e3f791163025be21",
      "parents": [
        "3dc8fe4dca9cd3e4aa828ed36451e2bcfd2350da"
      ],
      "author": {
        "name": "Dave Chinner",
        "email": "dchinner@redhat.com",
        "time": "Tue Mar 22 22:23:36 2011 +1100"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Thu Mar 24 21:16:31 2011 -0400"
      },
      "message": "fs: protect inode-\u003ei_state with inode-\u003ei_lock\n\nProtect inode state transitions and validity checks with the\ninode-\u003ei_lock. This enables us to make inode state transitions\nindependently of the inode_lock and is the first step to peeling\naway the inode_lock from the code.\n\nThis requires that __iget() is done atomically with i_state checks\nduring list traversals so that we don\u0027t race with another thread\nmarking the inode I_FREEING between the state check and grabbing the\nreference.\n\nAlso remove the unlock_new_inode() memory barrier optimisation\nrequired to avoid taking the inode_lock when clearing I_NEW.\nSimplify the code by simply taking the inode-\u003ei_lock around the\nstate change and wakeup. Because the wakeup is no longer tricky,\nremove the wake_up_inode() function and open code the wakeup where\nnecessary.\n\nSigned-off-by: Dave Chinner \u003cdchinner@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "4ee2491ed8569f370bf4c1a4c046a6efb8032bd2",
      "tree": "bc59eedcaf0a889e7fac77414011aba22da3f500",
      "parents": [
        "9b6096a65f99a89dfd8328c4e469e7b53b3ae04a"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jaxboe@fusionio.com",
        "time": "Thu Mar 17 10:51:40 2011 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jaxboe@fusionio.com",
        "time": "Thu Mar 17 10:51:40 2011 +0100"
      },
      "message": "fs: make fsync_buffers_list() plug\n\nIt used WRITE_SYNC_PLUG before and potentially submits a batch\nof IO, so lets enable plugging for this case.\n\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n"
    },
    {
      "commit": "721a9602e6607417c6bc15b18e97a2f35266c690",
      "tree": "4987991e43f35b8b3b685fea0040c5265b578996",
      "parents": [
        "cf15900e1209d5b46ec2d24643adbf561830935f"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jaxboe@fusionio.com",
        "time": "Wed Mar 09 11:56:30 2011 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jaxboe@fusionio.com",
        "time": "Thu Mar 10 08:52:27 2011 +0100"
      },
      "message": "block: kill off REQ_UNPLUG\n\nWith the plugging now being explicitly controlled by the\nsubmitter, callers need not pass down unplugging hints\nto the block layer. If they want to unplug, it\u0027s because they\nmanually plugged on their own - in which case, they should just\nunplug at will.\n\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n"
    },
    {
      "commit": "7eaceaccab5f40bbfda044629a6298616aeaed50",
      "tree": "33954d12f63e25a47eb6d86ef3d3d0a5e62bf752",
      "parents": [
        "73c101011926c5832e6e141682180c4debe2cf45"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jaxboe@fusionio.com",
        "time": "Thu Mar 10 08:52:07 2011 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jaxboe@fusionio.com",
        "time": "Thu Mar 10 08:52:07 2011 +0100"
      },
      "message": "block: remove per-queue plugging\n\nCode has been converted over to the new explicit on-stack plugging,\nand delay users have been converted to use the new API for that.\nSo lets kill off the old plugging along with aops-\u003esync_page().\n\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n"
    },
    {
      "commit": "ee1be8626355e6a1f3f8c44e2351ff2661c5998d",
      "tree": "cc7d20969444eb5e3c0541991014ef4fc5332185",
      "parents": [
        "cfb824349556904b319464139be5c75fce983b0d"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "cl@linux.com",
        "time": "Mon Dec 06 11:40:05 2010 -0600"
      },
      "committer": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Fri Dec 17 15:18:05 2010 +0100"
      },
      "message": "fs: Use this_cpu_inc_return in buffer.c\n\n__this_cpu_inc can create a single instruction with the same effect\nas the _get_cpu_var(..)++ construct in buffer.c.\n\nCc: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nAcked-by: H. Peter Anvin \u003chpa@zytor.com\u003e\nSigned-off-by: Christoph Lameter \u003ccl@linux.com\u003e\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\n"
    },
    {
      "commit": "c7b92516a9c68fa5403879225a5a19974a801ef6",
      "tree": "1f72ebd85bca40806024ac6b8f5caab068b7c15d",
      "parents": [
        "5309665dcc1143d659d82568da8d00f0e08a58f9"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "cl@linux.com",
        "time": "Mon Dec 06 11:16:28 2010 -0600"
      },
      "committer": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Fri Dec 17 15:07:19 2010 +0100"
      },
      "message": "fs: Use this_cpu_xx operations in buffer.c\n\nOptimize various per cpu area operations through these new percpu\noperations.  These operations avoid address calculations through the\nuse of segment prefixes and multiple memory references through RMW\ninstructions etc.\n\nReduces code size:\n\nBefore:\n\nchristoph@linux-2.6$ size fs/buffer.o\n   text\t   data\t    bss\t    dec\t    hex\tfilename\n  19169\t     80\t     28\t  19277\t   4b4d\tfs/buffer.o\n\nAfter:\n\nchristoph@linux-2.6$ size fs/buffer.o\n   text\t   data\t    bss\t    dec\t    hex\tfilename\n  19138\t     80\t     28\t  19246\t   4b2e\tfs/buffer.o\n\nV3-\u003eV4:\n\t- Move the use of this_cpu_inc_return into a later patch so that\n\t  this one can go in without percpu infrastructure changes.\n\nCc: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nAcked-by: H. Peter Anvin \u003chpa@zytor.com\u003e\nSigned-off-by: Christoph Lameter \u003ccl@linux.com\u003e\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\n"
    },
    {
      "commit": "426e1f5cec4821945642230218876b0e89aafab1",
      "tree": "2728ace018d0698886989da586210ef1543a7098",
      "parents": [
        "9e5fca251f44832cb996961048ea977f80faf6ea",
        "63997e98a3be68d7cec806d22bf9b02b2e1daabb"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Oct 26 17:58:44 2010 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Oct 26 17:58:44 2010 -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: (52 commits)\n  split invalidate_inodes()\n  fs: skip I_FREEING inodes in writeback_sb_inodes\n  fs: fold invalidate_list into invalidate_inodes\n  fs: do not drop inode_lock in dispose_list\n  fs: inode split IO and LRU lists\n  fs: switch bdev inode bdi\u0027s correctly\n  fs: fix buffer invalidation in invalidate_list\n  fsnotify: use dget_parent\n  smbfs: use dget_parent\n  exportfs: use dget_parent\n  fs: use RCU read side protection in d_validate\n  fs: clean up dentry lru modification\n  fs: split __shrink_dcache_sb\n  fs: improve DCACHE_REFERENCED usage\n  fs: use percpu counter for nr_dentry and nr_dentry_unused\n  fs: simplify __d_free\n  fs: take dcache_lock inside __d_path\n  fs: do not assign default i_ino in new_inode\n  fs: introduce a per-cpu last_ino allocator\n  new helper: ihold()\n  ...\n"
    },
    {
      "commit": "1df79da85657aecde2ecff052ff0cf9910311078",
      "tree": "d8a7032f425ecc2582cc0fed2e1d40a57255e189",
      "parents": [
        "d88262623fb58853ed60fb110141c435de26e3de"
      ],
      "author": {
        "name": "Namhyung Kim",
        "email": "namhyung@gmail.com",
        "time": "Tue Oct 26 14:22:31 2010 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Oct 26 16:52:13 2010 -0700"
      },
      "message": "fs/buffer.c: remove duplicated assignment to b_private\n\nbh-\u003eb_private is initialized within init_buffer(), thus this assignment is\nredundant.\n\nSigned-off-by: Namhyung Kim \u003cnamhyung@gmail.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "1b430beee5e388605dfb092b214ef0320f752cf6",
      "tree": "c1b1ece282aab771fd1386a3fe0c6e82cb5c5bfe",
      "parents": [
        "d19d5476f4b9f91d2de92b91588bb118beba6c0d"
      ],
      "author": {
        "name": "Wu Fengguang",
        "email": "fengguang.wu@intel.com",
        "time": "Tue Oct 26 14:21:26 2010 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Oct 26 16:52:05 2010 -0700"
      },
      "message": "writeback: remove nonblocking/encountered_congestion references\n\nThis removes more dead code that was somehow missed by commit 0d99519efef\n(writeback: remove unused nonblocking and congestion checks).  There are\nno behavior change except for the removal of two entries from one of the\next4 tracing interface.\n\nThe nonblocking checks in -\u003ewritepages are no longer used because the\nflusher now prefer to block on get_request_wait() than to skip inodes on\nIO congestion.  The latter will lead to more seeky IO.\n\nThe nonblocking checks in -\u003ewritepage are no longer used because it\u0027s\nredundant with the WB_SYNC_NONE check.\n\nWe no long set -\u003enonblocking in VM page out and page migration, because\na) it\u0027s effectively redundant with WB_SYNC_NONE in current code\nb) it\u0027s old semantic of \"Don\u0027t get stuck on request queues\" is mis-behavior:\n   that would skip some dirty inodes on congestion and page out others, which\n   is unfair in terms of LRU age.\n\nInspired by Christoph Hellwig. Thanks!\n\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: Theodore Ts\u0027o \u003ctytso@mit.edu\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Sage Weil \u003csage@newdream.net\u003e\nCc: Steve French \u003csfrench@samba.org\u003e\nCc: Chris Mason \u003cchris.mason@oracle.com\u003e\nCc: Jens Axboe \u003caxboe@kernel.dk\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": "309f77ad9bea057d55b04580b5a711e9e3727e83",
      "tree": "7edf988602761b4ac46f9edc9a6d89c7abffd3cf",
      "parents": [
        "a3314a0ed389f51a51695120b429eccd45b3a165"
      ],
      "author": {
        "name": "Namhyung Kim",
        "email": "namhyung@gmail.com",
        "time": "Mon Oct 25 15:01:12 2010 +0900"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Oct 25 21:18:23 2010 -0400"
      },
      "message": "fs/buffer.c: call __block_write_begin() if we have page\n\nIf we have the appropriate page already, call __block_write_begin()\ndirectly instead of releasing and regrabbing it inside of\nblock_write_begin().\n\nSigned-off-by: Namhyung Kim \u003cnamhyung@gmail.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "8358e7d71e712d3bd4e20ecf23e6fd7480c83684",
      "tree": "2a3e24e823246d02b7c6c72dd1fc54a93b71e578",
      "parents": [
        "bb1e5f8c022ae2f6bf1ec0c6b861db3c35976377"
      ],
      "author": {
        "name": "Namhyung Kim",
        "email": "namhyung@gmail.com",
        "time": "Sat Oct 16 12:40:33 2010 +0900"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Oct 25 21:18:22 2010 -0400"
      },
      "message": "fs/buffer.c: remove duplicated assignment on b_private\n\nbh-\u003eb_private is initialized within init_buffer(), thus the\nassignment should be redundant. Remove it.\n\nSigned-off-by: Namhyung Kim \u003cnamhyung@gmail.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "ebdec241d509cf69f6ebf1ecdc036359d3dbe154",
      "tree": "e3c23f9b213936cb8501c83f55522a01f4a69aca",
      "parents": [
        "56b0dacfa2b8416815a2f2a5f4f51e46be4cf14c"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Wed Oct 06 10:47:23 2010 +0200"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Oct 25 21:18:20 2010 -0400"
      },
      "message": "fs: kill block_prepare_write\n\n__block_write_begin and block_prepare_write are identical except for slightly\ndifferent calling conventions.  Convert all callers to the __block_write_begin\ncalling conventions and drop block_prepare_write.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "0edd55faea7c8081bc826234b917501738a6218f",
      "tree": "36a7add738bf47ce960d499f4cc96b38c5194c25",
      "parents": [
        "8c5553678237b7121355108e03c36086037d8975"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@infradead.org",
        "time": "Wed Aug 18 05:29:23 2010 -0400"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jaxboe@fusionio.com",
        "time": "Fri Sep 10 12:35:40 2010 +0200"
      },
      "message": "block: remove the BH_Eopnotsupp flag\n\nThis flag was only set for barrier buffers, which we don\u0027t submit\nanymore.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n"
    },
    {
      "commit": "9cb569d601e0b93e01c20a22872270ec663b75f6",
      "tree": "80b2568fae48018806e82f8884062dae8a5494ae",
      "parents": [
        "87e99511ea54510ffb60b98001d108794d5037f8"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Wed Aug 11 17:06:24 2010 +0200"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Aug 18 01:09:01 2010 -0400"
      },
      "message": "remove SWRITE* I/O types\n\nThese flags aren\u0027t real I/O types, but tell ll_rw_block to always\nlock the buffer instead of giving up on a failed trylock.\n\nInstead add a new write_dirty_buffer helper that implements this semantic\nand use it from the existing SWRITE* callers.  Note that the ll_rw_block\ncode had a bug where it didn\u0027t promote WRITE_SYNC_PLUG properly, which\nthis patch fixes.\n\nIn the ufs code clean up the helper that used to call ll_rw_block\nto mirror sync_dirty_buffer, which is the function it implements for\ncompound buffers.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "87e99511ea54510ffb60b98001d108794d5037f8",
      "tree": "359228828515e02302d9b259a066a1f1118eba0a",
      "parents": [
        "dad5eb6daa7eeb63d4fc9d982892c59faa07e797"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Wed Aug 11 17:05:45 2010 +0200"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Aug 18 01:09:00 2010 -0400"
      },
      "message": "kill BH_Ordered flag\n\nInstead of abusing a buffer_head flag just add a variant of\nsync_dirty_buffer which allows passing the exact type of write\nflag required.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "155130a4f7848b1aac439cab6bda1a175507c71c",
      "tree": "5019b14b0a9221b08959196e01e3f9326957d678",
      "parents": [
        "6e1db88d536adcbbfe562b2d4b7d6425784fff12"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Fri Jun 04 11:29:58 2010 +0200"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Aug 09 16:47:33 2010 -0400"
      },
      "message": "get rid of block_write_begin_newtrunc\n\nMove the call to vmtruncate to get rid of accessive blocks to the callers\nin preparation of the new truncate sequence and rename the non-truncating\nversion to block_write_begin.\n\nWhile we\u0027re at it also remove several unused arguments to block_write_begin.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "6e1db88d536adcbbfe562b2d4b7d6425784fff12",
      "tree": "8cfcb5a6190722db6249b2e4978f39247975abcf",
      "parents": [
        "f4e420dc423148fba637af1ab618fa8896dfb2d6"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Fri Jun 04 11:29:57 2010 +0200"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Aug 09 16:47:32 2010 -0400"
      },
      "message": "introduce __block_write_begin\n\nSplit up the block_write_begin implementation - __block_write_begin is a new\ntrivial wrapper for block_prepare_write that always takes an already\nallocated page and can be either called from block_write_begin or filesystem\ncode that already has a page allocated.  Remove the handling of already\nallocated pages from block_write_begin after switching all callers that\ndo it to __block_write_begin.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "282dc178849882289d30e58b54be6b2799b351aa",
      "tree": "4c6697cdf2d914889e002f32af6bf51bb2750063",
      "parents": [
        "ea0f04e59543bafb3d2cbe37a0d375acb0bb2c34"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Fri Jun 04 11:29:55 2010 +0200"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Aug 09 16:47:31 2010 -0400"
      },
      "message": "get rid of cont_write_begin_newtrunc\n\nMove the call to vmtruncate to get rid of accessive blocks to the callers\nin preparation of the new truncate sequence and rename the non-truncating\nversion to cont_write_begin.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "ea0f04e59543bafb3d2cbe37a0d375acb0bb2c34",
      "tree": "66a400f5b8e9a01acb72107c72e504325af6fe67",
      "parents": [
        "eafdc7d190a944c755a9fe68573c193e6e0217e7"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Fri Jun 04 11:29:54 2010 +0200"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Aug 09 16:47:30 2010 -0400"
      },
      "message": "get rid of nobh_write_begin_newtrunc\n\nMove the call to vmtruncate to get rid of accessive blocks to the only\nremaining caller and rename the non-truncating version to nobh_write_begin.\n\nGet rid of the superflous file argument to it while we\u0027re at it.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "7bb46a6734a7e1ad4beaecc11cae7ed3ff81d30f",
      "tree": "e575d9c55e2a6ccc645dcb3ae2564de458b428f2",
      "parents": [
        "7000d3c424e5bb350e502a477fb0e1ed42f8b10e"
      ],
      "author": {
        "name": "npiggin@suse.de",
        "email": "npiggin@suse.de",
        "time": "Thu May 27 01:05:33 2010 +1000"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Thu May 27 22:15:33 2010 -0400"
      },
      "message": "fs: introduce new truncate sequence\n\nIntroduce a new truncate calling sequence into fs/mm subsystems. Rather than\nsetattr \u003e vmtruncate \u003e truncate, have filesystems call their truncate sequence\nfrom -\u003esetattr if filesystem specific operations are required. vmtruncate is\ndeprecated, and truncate_pagecache and inode_newsize_ok helpers introduced\npreviously should be used.\n\nsimple_setattr is introduced for simple in-ram filesystems to implement\nthe new truncate sequence. Eventually all filesystems should be converted\nto implement a setattr, and the default code in notify_change should go\naway.\n\nsimple_setsize is also introduced to perform just the ATTR_SIZE portion\nof simple_setattr (ie. changing i_size and trimming pagecache).\n\nTo implement the new truncate sequence:\n- filesystem specific manipulations (eg freeing blocks) must be done in\n  the setattr method rather than -\u003etruncate.\n- vmtruncate can not be used by core code to trim blocks past i_size in\n  the event of write failure after allocation, so this must be performed\n  in the fs code.\n- convert usage of helpers block_write_begin, nobh_write_begin,\n  cont_write_begin, and *blockdev_direct_IO* to use _newtrunc postfixed\n  variants. These avoid calling vmtruncate to trim blocks (see previous).\n- inode_setattr should not be used. generic_setattr is a new function\n  to be used to copy simple attributes into the generic inode.\n- make use of the better opportunity to handle errors with the new sequence.\n\nBig problem with the previous calling sequence: the filesystem is not called\nuntil i_size has already changed.  This means it is not allowed to fail the\ncall, and also it does not know what the previous i_size was. Also, generic\ncode calling vmtruncate to truncate allocated blocks in case of error had\nno good way to return a meaningful error (or, for example, atomically handle\nblock deallocation).\n\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nAcked-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "e8bebe2f71d26871b0970ae1d9cf0ed3cdd9569d",
      "tree": "c0d82cbd11daaf579b74121c6641d58947091094",
      "parents": [
        "6109e2ce2600e2db26cd0424bb9c6ed019723288",
        "82f3952c02add60b15eea9151d4d99b6b82066c6"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri May 21 19:37:45 2010 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri May 21 19:37:45 2010 -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: (69 commits)\n  fix handling of offsets in cris eeprom.c, get rid of fake on-stack files\n  get rid of home-grown mutex in cris eeprom.c\n  switch ecryptfs_write() to struct inode *, kill on-stack fake files\n  switch ecryptfs_get_locked_page() to struct inode *\n  simplify access to ecryptfs inodes in -\u003ereadpage() and friends\n  AFS: Don\u0027t put struct file on the stack\n  Ban ecryptfs over ecryptfs\n  logfs: replace inode uid,gid,mode initialization with helper function\n  ufs: replace inode uid,gid,mode initialization with helper function\n  udf: replace inode uid,gid,mode init with helper\n  ubifs: replace inode uid,gid,mode initialization with helper function\n  sysv: replace inode uid,gid,mode initialization with helper function\n  reiserfs: replace inode uid,gid,mode initialization with helper function\n  ramfs: replace inode uid,gid,mode initialization with helper function\n  omfs: replace inode uid,gid,mode initialization with helper function\n  bfs: replace inode uid,gid,mode initialization with helper function\n  ocfs2: replace inode uid,gid,mode initialization with helper function\n  nilfs2: replace inode uid,gid,mode initialization with helper function\n  minix: replace inode uid,gid,mode init with helper\n  ext4: replace inode uid,gid,mode init with helper\n  ...\n\nTrivial conflict in fs/fs-writeback.c (mark bitfields unsigned)\n"
    },
    {
      "commit": "01a05b337a5b647909e1d6670f57e7202318a5fb",
      "tree": "7877f08db14877d06346c8e1ef52aa17f2483e93",
      "parents": [
        "35cf7ba0b46dc3582a01c3860b14bff122662aa3"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Tue Mar 23 06:06:58 2010 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Fri May 21 18:31:16 2010 -0400"
      },
      "message": "new helper: iterate_supers()\n\n... and switch the simple \"loop over superblocks and do something\"\nloops to it.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "6754af64641e8224c281ee5714e012e3ed41f701",
      "tree": "248a8c01aae46f98505d8c196393fae629f9691a",
      "parents": [
        "8edd64bd6089e21f47dcdebb14b598b713213ddc"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Mar 22 20:09:33 2010 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Fri May 21 18:31:15 2010 -0400"
      },
      "message": "Convert simple loops over superblocks to list_for_each_entry_safe\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "551de6f34dfeefbeeadb32909c387d393114ecc8",
      "tree": "822af803e7e75ed476b0a176639c162e0395910d",
      "parents": [
        "1712ac8fda7d8bc4dc921f5777b7423aacad7263"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Mar 22 19:36:35 2010 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Fri May 21 18:31:14 2010 -0400"
      },
      "message": "Leave superblocks on s_list until the end\n\nWe used to remove from s_list and s_instances at the same\ntime.  So let\u0027s *not* do the former and skip superblocks\nthat have empty s_instances in the loops over s_list.\n\nThe next step, of course, will be to get rid of rescan logics\nin those loops.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "fa4b9074cd8428958c2adf9dc0c831f46e27c193",
      "tree": "752103db616696fd7ba3374948fac9ebdf462d9e",
      "parents": [
        "f1ac2502e19c59e996242d406fcc60e4c563e8ce"
      ],
      "author": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Sat May 15 20:09:27 2010 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Fri May 21 20:01:02 2010 +0200"
      },
      "message": "buffer: make invalidate_bdev() drain all percpu LRU add caches\n\ninvalidate_bdev() should release all page cache pages which are clean\nand not being used; however, if some pages are still in the percpu LRU\nadd caches on other cpus, those pages are considered in used and don\u0027t\nget released.  Fix it by calling lru_add_drain_all() before trying to\ninvalidate pages.\n\nThis problem was discovered while testing block automatic native\ncapacity unlocking.  Null pages which were read before automatic\nunlocking didn\u0027t get released by invalidate_bdev() and ended up\ninterfering with partition scan after unlocking.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "c32da02342b7521df25fefc2ef20aee0e61cf887",
      "tree": "7e38f664fa3e13602c357d37f77d8adcf82fccc2",
      "parents": [
        "dca1d9f6d7ae428c193f32bd3e9a4ca13176648b",
        "318ae2edc3b29216abd8a2510f3f80b764f06858"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Mar 12 16:04:50 2010 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Mar 12 16:04:50 2010 -0800"
      },
      "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: (56 commits)\n  doc: fix typo in comment explaining rb_tree usage\n  Remove fs/ntfs/ChangeLog\n  doc: fix console doc typo\n  doc: cpuset: Update the cpuset flag file\n  Fix of spelling in arch/sparc/kernel/leon_kernel.c no longer needed\n  Remove drivers/parport/ChangeLog\n  Remove drivers/char/ChangeLog\n  doc: typo - Table 1-2 should refer to \"status\", not \"statm\"\n  tree-wide: fix typos \"ass?o[sc]iac?te\" -\u003e \"associate\" in comments\n  No need to patch AMD-provided drivers/gpu/drm/radeon/atombios.h\n  devres/irq: Fix devm_irq_match comment\n  Remove reference to kthread_create_on_cpu\n  tree-wide: Assorted spelling fixes\n  tree-wide: fix \u0027lenght\u0027 typo in comments and code\n  drm/kms: fix spelling in error message\n  doc: capitalization and other minor fixes in pnp doc\n  devres: typo fix s/dev/devm/\n  Remove redundant trailing semicolons from macros\n  fix typo \"definetly\" -\u003e \"definitely\" in comment\n  tree-wide: s/widht/width/g typo in comments\n  ...\n\nFix trivial conflict in Documentation/laptops/00-INDEX\n"
    },
    {
      "commit": "019b4d123aa7b9fc135b532e021cfde85db7665d",
      "tree": "91edbae535136417bc1277dd2c40d98c7ea7ec8f",
      "parents": [
        "03affdef4fc85e416e3862abb0aa549c6034cdd0"
      ],
      "author": {
        "name": "Richard Kennedy",
        "email": "richard@rsk.demon.co.uk",
        "time": "Wed Mar 10 15:20:33 2010 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Mar 12 15:52:27 2010 -0800"
      },
      "message": "fs: buffer_head: remove kmem_cache constructor to reduce memory usage under slub\n\nWhen using slub, having a kmem_cache constructor forces slub to add a free\npointer to the size of the cached object, which can have a significant\nimpact to the number of small objects that can fit into a slab.\n\nAs buffer_head is relatively small and we can have large numbers of them,\nremoving the constructor is a definite win.\n\nOn x86_64 removing the constructor gives me 39 objects/slab, 3 more than\nwithout the patch.  And on x86_32 73 objects/slab, which is 9 more.\n\nAs alloc_buffer_head() already initializes each new object there is very\nlittle difference in actual code run.\n\nSigned-off-by: Richard Kennedy \u003crichard@rsk.demon.co.uk\u003e\nCc: Alexander Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nAcked-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\nReviewed-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "2a61aa401638529cd4231f6106980d307fba98fa",
      "tree": "a3d7565570c5996d0b3ae5fdf0126e065e750431",
      "parents": [
        "c41b20e721ea4f6f20f66a66e7f0c3c97a2ca9c2"
      ],
      "author": {
        "name": "Adam Buchbinder",
        "email": "adam.buchbinder@gmail.com",
        "time": "Fri Dec 11 16:35:40 2009 -0500"
      },
      "committer": {
        "name": "Jiri Kosina",
        "email": "jkosina@suse.cz",
        "time": "Thu Feb 04 11:55:45 2010 +0100"
      },
      "message": "Fix misspellings of \"invocation\" in comments.\n\nSome comments misspell \"invocation\"; this fixes them. No code\nchanges.\n\nSigned-off-by: Adam Buchbinder \u003cadam.buchbinder@gmail.com\u003e\nSigned-off-by: Jiri Kosina \u003cjkosina@suse.cz\u003e\n"
    },
    {
      "commit": "6d7f18f6ea3a13af95bdf507fc54d42b165e1712",
      "tree": "8f6f3a6d46835aa767823fa7049609408a87afc2",
      "parents": [
        "53cddfcc0e760d2b364878b6dadbd0c6d087cfae",
        "56a131dcf7ed36c3c6e36bea448b674ea85ed5bb"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Sep 25 09:27:30 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Sep 25 09:27:30 2009 -0700"
      },
      "message": "Merge branch \u0027writeback\u0027 of git://git.kernel.dk/linux-2.6-block\n\n* \u0027writeback\u0027 of git://git.kernel.dk/linux-2.6-block:\n  writeback: writeback_inodes_sb() should use bdi_start_writeback()\n  writeback: don\u0027t delay inodes redirtied by a fast dirtier\n  writeback: make the super_block pinning more efficient\n  writeback: don\u0027t resort for a single super_block in move_expired_inodes()\n  writeback: move inodes from one super_block together\n  writeback: get rid to incorrect references to pdflush in comments\n  writeback: improve readability of the wb_writeback() continue/break logic\n  writeback: cleanup writeback_single_inode()\n  writeback: kupdate writeback shall not stop when more io is possible\n  writeback: stop background writeback when below background threshold\n  writeback: balance_dirty_pages() shall write more than dirtied pages\n  fs: Fix busyloop in wb_writeback()\n"
    },
    {
      "commit": "5b0830cb9085f4b69f9d57d7f3aaff322ffbec26",
      "tree": "10040eb359269d4cd05487790b758144a69e8e39",
      "parents": [
        "71fd05a887e0f3f6bfff76ff81b33776177d0606"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Wed Sep 23 19:37:09 2009 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Fri Sep 25 18:08:25 2009 +0200"
      },
      "message": "writeback: get rid to incorrect references to pdflush in comments\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "c08d3b0e33edce28e9cfa7b64f7fe5bdeeb29248",
      "tree": "6c161cc57a2873e6f91335113192a99531901cd8",
      "parents": [
        "25d9e2d15286281ec834b829a4aaf8969011f1cd"
      ],
      "author": {
        "name": "npiggin@suse.de",
        "email": "npiggin@suse.de",
        "time": "Fri Aug 21 02:35:06 2009 +1000"
      },
      "committer": {
        "name": "al",
        "email": "al@dizzy.pdmi.ras.ru",
        "time": "Thu Sep 24 08:41:47 2009 -0400"
      },
      "message": "truncate: use new helpers\n\nUpdate some fs code to make use of new helper functions introduced\nin the previous patch. Should be no significant change in behaviour\n(except CIFS now calls send_sig under i_lock, via inode_newsize_ok).\n\nReviewed-by: Christoph Hellwig \u003chch@lst.de\u003e\nAcked-by: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nCc: linux-nfs@vger.kernel.org\nCc: Trond.Myklebust@netapp.com\nCc: linux-cifs-client@lists.samba.org\nCc: sfrench@samba.org\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "1fe72eaa0f46a0fa4cdcd8f3f7853b6d39469784",
      "tree": "1bcaa65c0011cf329d5dd2a06be519460d06e434",
      "parents": [
        "88e0fbc452ed94393bf89585c2b90edb94749b45"
      ],
      "author": {
        "name": "H Hartley Sweeten",
        "email": "hartleys@visionengravers.com",
        "time": "Tue Sep 22 16:43:51 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Sep 23 07:39:29 2009 -0700"
      },
      "message": "fs/buffer.c: clean up EXPORT* macros\n\nAccording to Documentation/CodingStyle the EXPORT* macro should follow\nimmediately after the closing function brace line.\n\nAlso, mark_buffer_async_write_endio() and do_thaw_all() are not used\nelsewhere so they should be marked as static.\n\nIn addition, file_fsync() is actually in fs/sync.c so move the EXPORT* to\nthat file.\n\nSigned-off-by: H Hartley Sweeten \u003chsweeten@visionengravers.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "03ba3782e8dcc5b0e1efe440d33084f066e38cae",
      "tree": "e5a6513b411de16a46199530ec98ef9b7f1efc50",
      "parents": [
        "66f3b8e2e103a0b93b945764d98e9ba46cb926dd"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Wed Sep 09 09:08:54 2009 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Fri Sep 11 09:20:25 2009 +0200"
      },
      "message": "writeback: switch to per-bdi threads for flushing data\n\nThis gets rid of pdflush for bdi writeout and kupdated style cleaning.\npdflush writeout suffers from lack of locality and also requires more\nthreads to handle the same workload, since it has to work in a\nnon-blocking fashion against each queue. This also introduces lumpy\nbehaviour and potential request starvation, since pdflush can be starved\nfor queue access if others are accessing it. A sample ffsb workload that\ndoes random writes to files is about 8% faster here on a simple SATA drive\nduring the benchmark phase. File layout also seems a LOT more smooth in\nvmstat:\n\n r  b   swpd   free   buff  cache   si   so    bi    bo   in    cs us sy id wa\n 0  1      0 608848   2652 375372    0    0     0 71024  604    24  1 10 48 42\n 0  1      0 549644   2712 433736    0    0     0 60692  505    27  1  8 48 44\n 1  0      0 476928   2784 505192    0    0     4 29540  553    24  0  9 53 37\n 0  1      0 457972   2808 524008    0    0     0 54876  331    16  0  4 38 58\n 0  1      0 366128   2928 614284    0    0     4 92168  710    58  0 13 53 34\n 0  1      0 295092   3000 684140    0    0     0 62924  572    23  0  9 53 37\n 0  1      0 236592   3064 741704    0    0     4 58256  523    17  0  8 48 44\n 0  1      0 165608   3132 811464    0    0     0 57460  560    21  0  8 54 38\n 0  1      0 102952   3200 873164    0    0     4 74748  540    29  1 10 48 41\n 0  1      0  48604   3252 926472    0    0     0 53248  469    29  0  7 47 45\n\nwhere vanilla tends to fluctuate a lot in the creation phase:\n\n r  b   swpd   free   buff  cache   si   so    bi    bo   in    cs us sy id wa\n 1  1      0 678716   5792 303380    0    0     0 74064  565    50  1 11 52 36\n 1  0      0 662488   5864 319396    0    0     4   352  302   329  0  2 47 51\n 0  1      0 599312   5924 381468    0    0     0 78164  516    55  0  9 51 40\n 0  1      0 519952   6008 459516    0    0     4 78156  622    56  1 11 52 37\n 1  1      0 436640   6092 541632    0    0     0 82244  622    54  0 11 48 41\n 0  1      0 436640   6092 541660    0    0     0     8  152    39  0  0 51 49\n 0  1      0 332224   6200 644252    0    0     4 102800  728    46  1 13 49 36\n 1  0      0 274492   6260 701056    0    0     4 12328  459    49  0  7 50 43\n 0  1      0 211220   6324 763356    0    0     0 106940  515    37  1 10 51 39\n 1  0      0 160412   6376 813468    0    0     0  8224  415    43  0  6 49 45\n 1  1      0  85980   6452 886556    0    0     4 113516  575    39  1 11 54 34\n 0  2      0  85968   6452 886620    0    0     0  1640  158   211  0  0 46 54\n\nA 10 disk test with btrfs performs 26% faster with per-bdi flushing. A\nSSD based writeback test on XFS performs over 20% better as well, with\nthe throughput being very stable around 1GB/sec, where pdflush only\nmanages 750MB/sec and fluctuates wildly while doing so. Random buffered\nwrites to many files behave a lot better as well, as does random mmap\u0027ed\nwrites.\n\nA separate thread is added to sync the super blocks. In the long term,\nadding sync_supers_bdi() functionality could get rid of this thread again.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "8e9d78edea3ce5c0036f85b93091483f2f15443a",
      "tree": "898c98daca2602f0df70558211f30ff1bd2bcf6c",
      "parents": [
        "4dfd79e7b42bff334128907e28c3b41f1ef1cec8"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Aug 21 17:40:08 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Aug 21 17:40:08 2009 -0700"
      },
      "message": "Re-introduce page mapping check in mark_buffer_dirty()\n\nIn commit a8e7d49aa7be728c4ae241a75a2a124cdcabc0c5 (\"Fix race in\ncreate_empty_buffers() vs __set_page_dirty_buffers()\"), I removed a test\nfor a NULL page mapping unintentionally when some of the code inside\n__set_page_dirty() was moved to the callers.\n\nThat removal generally didn\u0027t matter, since a filesystem would serialize\ntruncation (which clears the page mapping) against writing (which marks\nthe buffer dirty), so locking at a higher level (either per-page or an\ninode at a time) should mean that the buffer page would be stable.  And\nindeed, nothing bad seemed to happen.\n\nExcept it turns out that apparently reiserfs does something odd when\nunder load and writing out the journal, and we have a number of bugzilla\nentries that look similar:\n\n\thttp://bugzilla.kernel.org/show_bug.cgi?id\u003d13556\n\thttp://bugzilla.kernel.org/show_bug.cgi?id\u003d13756\n\thttp://bugzilla.kernel.org/show_bug.cgi?id\u003d13876\n\nand it looks like reiserfs depended on that check (the common theme\nseems to be \"data\u003djournal\", and a journal writeback during a truncate).\n\nI suspect reiserfs should have some additional locking, but in the\nmeantime this should get us back to the pre-2.6.29 behavior.\n\nPattern-pointed-out-by: Roland Kletzing \u003cdevzero@web.de\u003e\nCc: stable@kernel.org (2.6.29 and 2.6.30)\nCc: Jeff Mahoney \u003cjeffm@suse.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "c9059598ea8981d02356eead3188bf7fa4d717b8",
      "tree": "03e73b20a30e988da7c6a3e0ad93b2dc5843274d",
      "parents": [
        "0a33f80a8373eca7f4bea3961d1346c3815fa5ed",
        "b0fd271d5fba0b2d00888363f3869e3f9b26caa9"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jun 11 10:52:27 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jun 11 11:10:35 2009 -0700"
      },
      "message": "Merge branch \u0027for-2.6.31\u0027 of git://git.kernel.dk/linux-2.6-block\n\n* \u0027for-2.6.31\u0027 of git://git.kernel.dk/linux-2.6-block: (153 commits)\n  block: add request clone interface (v2)\n  floppy: fix hibernation\n  ramdisk: remove long-deprecated \"ramdisk\u003d\" boot-time parameter\n  fs/bio.c: add missing __user annotation\n  block: prevent possible io_context-\u003erefcount overflow\n  Add serial number support for virtio_blk, V4a\n  block: Add missing bounce_pfn stacking and fix comments\n  Revert \"block: Fix bounce limit setting in DM\"\n  cciss: decode unit attention in SCSI error handling code\n  cciss: Remove no longer needed sendcmd reject processing code\n  cciss: change SCSI error handling routines to work with interrupts enabled.\n  cciss: separate error processing and command retrying code in sendcmd_withirq_core()\n  cciss: factor out fix target status processing code from sendcmd functions\n  cciss: simplify interface of sendcmd() and sendcmd_withirq()\n  cciss: factor out core of sendcmd_withirq() for use by SCSI error handling code\n  cciss: Use schedule_timeout_uninterruptible in SCSI error handling code\n  block: needs to set the residual length of a bidi request\n  Revert \"block: implement blkdev_readpages\"\n  block: Fix bounce limit setting in DM\n  Removed reference to non-existing file Documentation/PCI/PCI-DMA-mapping.txt\n  ...\n\nManually fix conflicts with tracing updates in:\n\tblock/blk-sysfs.c\n\tdrivers/ide/ide-atapi.c\n\tdrivers/ide/ide-cd.c\n\tdrivers/ide/ide-floppy.c\n\tdrivers/ide/ide-tape.c\n\tinclude/trace/events/block.h\n\tkernel/trace/blktrace.c\n"
    },
    {
      "commit": "e893123c7378192c094747dadec326b7c000c190",
      "tree": "3fac44dceaa87339819d078e2bd69ea9a01056c3",
      "parents": [
        "27951daa71f1c91300ae4de9441916d1ffe2b078",
        "a41f20716975910d9beb90b7efc61107901492b8"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jun 11 10:00:50 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jun 11 10:00:50 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: (49 commits)\n  ext4: Avoid corrupting the uninitialized bit in the extent during truncate\n  ext4: Don\u0027t treat a truncation of a zero-length file as replace-via-truncate\n  ext4: fix dx_map_entry to support 256k directory blocks\n  ext4: truncate the file properly if we fail to copy data from userspace\n  ext4: Avoid leaking blocks after a block allocation failure\n  ext4: Change all super.c messages to print the device\n  ext4: Get rid of EXTEND_DISKSIZE flag of ext4_get_blocks_handle()\n  ext4: super.c whitespace cleanup\n  jbd2: Fix minor typos in comments in fs/jbd2/journal.c\n  ext4: Clean up calls to ext4_get_group_desc()\n  ext4: remove unused function __ext4_write_dirty_metadata\n  ext2: Fix memory leak in ext2_fill_super() in case of a failed mount\n  ext3: Fix memory leak in ext3_fill_super() in case of a failed mount\n  ext4: Fix memory leak in ext4_fill_super() in case of a failed mount\n  ext4: down i_data_sem only for read when walking tree for fiemap\n  ext4: Add a comprehensive block validity check to ext4_get_blocks()\n  ext4: Clean up ext4_get_blocks() so it does not depend on bh_result-\u003eb_state\n  ext4: Merge ext4_da_get_block_write() into mpage_da_map_blocks()\n  ext4: Add BUG_ON debugging checks to noalloc_get_block_write()\n  ext4: Add documentation to the ext4_*get_block* functions\n  ...\n"
    },
    {
      "commit": "460bcf57b128ce1c0dd553d905fedc097f9955c6",
      "tree": "5e5f45d6c3b5584a086a306a67d4fb984fef5653",
      "parents": [
        "064e38aaded5269e573ac1c765284fd65c8ebd13"
      ],
      "author": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Tue May 12 07:37:56 2009 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sat Jun 06 06:17:25 2009 -0400"
      },
      "message": "Fix nobh_truncate_page() to not pass stack garbage to get_block()\n\nThe nobh_truncate_page() function is used by ext2, exofs, and jfs.  Of\nthese three, only ext2 and jfs\u0027s get_block() function pays attention\nto bh-\u003eb_size --- which is normally always the filesystem blocksize\nexcept when the get_block() function is called by either\nmpage_readpage(), mpage_readpages(), or the direct I/O routines in\nfs/direct_io.c.\n\nUnfortunately, nobh_truncate_page() does not initialize map_bh before\ncalling the filesystem-supplied get_block() function.  So ext2 and jfs\nwill try to calculate the number of blocks to map by taking stack\ngarbage and shifting it left by inode-\u003ei_blkbits.  This should be\n*mostly* harmless (except the filesystem will do some unnneeded work)\nunless the stack garbage is less than filesystem\u0027s blocksize, in which\ncase maxblocks will be zero, and the attempt to find out whether or\nnot the filesystem has a hole at a given logical block will fail, and\nthe page cache entry might not get zero\u0027ed out.\n\nAlso if the stack garbage in in map_bh-\u003estate happens to have the\nBH_Mapped bit set, there could be an attempt to call readpage() on a\nnon-existent page, which could cause nobh_truncate_page() to return an\nerror when it should not.\n\nFix this by initializing map_bh-\u003estate and map_bh-\u003esize.\n\nFortunately, it\u0027s probably fairly unlikely that ext2 and jfs users\nmount with nobh these days.\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\nCc: Dave Kleikamp \u003cshaggy@linux.vnet.ibm.com\u003e\nCc: linux-fsdevel@vger.kernel.org\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "e1defc4ff0cf57aca6c5e3ff99fa503f5943c1f1",
      "tree": "d60d15a082171c58ac811d547d51a9c3119f23e3",
      "parents": [
        "9bd7de51ee8537094656149eaf45338cadb7d7d4"
      ],
      "author": {
        "name": "Martin K. Petersen",
        "email": "martin.petersen@oracle.com",
        "time": "Fri May 22 17:17:49 2009 -0400"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Fri May 22 23:22:54 2009 +0200"
      },
      "message": "block: Do away with the notion of hardsect_size\n\nUntil now we have had a 1:1 mapping between storage device physical\nblock size and the logical block sized used when addressing the device.\nWith SATA 4KB drives coming out that will no longer be the case.  The\nsector size will be 4KB but the logical block size will remain\n512-bytes.  Hence we need to distinguish between the physical block size\nand the logical ditto.\n\nThis patch renames hardsect_size to logical_block_size.\n\nSigned-off-by: Martin K. Petersen \u003cmartin.petersen@oracle.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.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"
    },
    {
      "commit": "8fb0e342481c4d80040670fec915f0b9c7c6499a",
      "tree": "6574f483e45cb24ebf9eb2121b67b20a75a9f180",
      "parents": [
        "79ffab34391933ee3b95dac7f25c0478fa2f8f1e"
      ],
      "author": {
        "name": "Aneesh Kumar K.V",
        "email": "aneesh.kumar@linux.vnet.ibm.com",
        "time": "Tue May 12 16:22:37 2009 -0400"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Tue May 12 16:22:37 2009 -0400"
      },
      "message": "vfs: Add BUG_ON for delayed and unwritten flags in submit_bh()\n\nThe BH_Delay and BH_Unwritten flags should never leak out to\nsubmit_bh().  So add some BUG_ON() checks to submit_bh so we can get a\nstack trace and determine how and why this might have happened.\n\n(Note that only XFS and ext4 use these buffer head flags, and XFS does\nnot use submit_bh().  So this patch should only modify behavior for\next4.)\n\nSigned-off-by: Aneesh Kumar K.V \u003caneesh.kumar@linux.vnet.ibm.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\nCc: linux-fsdevel@vger.kernel.org\n"
    },
    {
      "commit": "35c80d5f400f68f2eccf3069d1c068e154bde9c9",
      "tree": "43dd3ebb3e654b1a1ed4210089b7dc27b1f516e9",
      "parents": [
        "f69955855eac55a048d26a1618f50dfaa160a006"
      ],
      "author": {
        "name": "Chris Mason",
        "email": "chris.mason@oracle.com",
        "time": "Wed Apr 15 13:22:38 2009 -0400"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Apr 16 07:47:49 2009 -0700"
      },
      "message": "Add block_write_full_page_endio for passing endio handler\n\nblock_write_full_page doesn\u0027t allow the caller to control what happens\nwhen the IO is over.  This adds a new call named block_write_full_page_endio\nso the buffer head end_io handler can be provided by the caller.\n\nThis will be used by the ext3 data\u003dguarded mode to do i_size updates in\na workqueue based end_io handler.  end_buffer_async_write is also\nexported so it can be called to do the dirty work of managing page\nwriteback for the higher level end_io handler.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\nAcked-by: Theodore Tso \u003ctytso@mit.edu\u003e\nAcked-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "053c525fcf976810f023d96472f414c0d5e6339b",
      "tree": "2e1954da38bd4c59edb9ff3daf0111b02c181b0a",
      "parents": [
        "329007ce25d56fc7113df7b4828d607806d8bc21"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Wed Apr 08 13:44:08 2009 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Wed Apr 15 08:28:12 2009 +0200"
      },
      "message": "buffer: switch do_emergency_thaw() away from pdflush_operation()\n\nThis is (again) a preparatory patch similar to commit\na2a9537ac0b37a5da6fbe7e1e9cb06c524d2a9c4. It open codes a simple\nasync way of executing do_thaw_all() out of context, so we can get\nrid of pdflush.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "6e34eeddf7deec1444bbddab533f03f520d8458c",
      "tree": "a0e189c329a15363073eab257a3f704cf778107e",
      "parents": [
        "577c9c456f0e1371cbade38eaf91ae8e8a308555"
      ],
      "author": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Tue Apr 07 18:12:43 2009 -0400"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Wed Apr 08 13:15:09 2009 -0400"
      },
      "message": "block_write_full_page: switch synchronous writes to use WRITE_SYNC_PLUG\n\nNow that we have a distinction between WRITE_SYNC and WRITE_SYNC_PLUG,\nuse WRITE_SYNC_PLUG in __block_write_full_page() to avoid unplugging\nthe block device I/O queue between each page that gets flushed out.\n\nOtherwise, when we run sync() or fsync() and we need to write out a\nlarge number of pages, the block device queue will get unplugged\nbetween for every page that is flushed out, which will be a pretty\nserious performance regression caused by commit a64c8610.\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n"
    },
    {
      "commit": "1aa2a7cc6fd7b5c86681a6ae9dfd1072c261a435",
      "tree": "4910dbeec6f365b133249091af74e1a0db829f1f",
      "parents": [
        "aeb6fafb8fa53266d70ca7474fcda2bdaf96524a"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Mon Apr 06 14:48:08 2009 +0200"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 06 08:04:54 2009 -0700"
      },
      "message": "block: switch sync_dirty_buffer() over to WRITE_SYNC\n\nWe should now have the logic in place to handle this properly\nwithout regressing on the write performance, so re-enable\nthe sync writes.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "9cf6b720f84d6999ff9a514d0a939dd183846aaf",
      "tree": "13f58881927769c792b8b1f685282aa67264b9ed",
      "parents": [
        "a1f242524c3c1f5d40f1c9c343427e34d1aadd6e"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Mon Apr 06 14:48:03 2009 +0200"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 06 08:04:53 2009 -0700"
      },
      "message": "block: fsync_buffers_list() should use SWRITE_SYNC_PLUG\n\nThen it can submit all the buffers without unplugging for each one.\nWe will kick off the pending IO if we come across a new address space.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "20bec8ab1458c24bed0d5492ee15d87807fc415a",
      "tree": "e5f910947dbe314b96a591e41e2cfb2d3322caad",
      "parents": [
        "18b34b9546dc192d978dda940673f40928d2e36e",
        "e7c8f5079ed9ec9e6eb1abe3defc5fb4ebfdf1cb"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Apr 03 11:10:33 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Apr 03 11:10:33 2009 -0700"
      },
      "message": "Merge branch \u0027ext3-latency-fixes\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4\n\n* \u0027ext3-latency-fixes\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:\n  ext3: Add replace-on-rename hueristics for data\u003dwriteback mode\n  ext3: Add replace-on-truncate hueristics for data\u003dwriteback mode\n  ext3: Use WRITE_SYNC for commits which are caused by fsync()\n  block_write_full_page: Use synchronous writes for WBC_SYNC_ALL writebacks\n"
    },
    {
      "commit": "8fe74cf053de7ad2124a894996f84fa890a81093",
      "tree": "77dcd8fbf33ce53a3821942233962fb28c6f2848",
      "parents": [
        "c2eb2fa6d2b6fe122d3479ec5b28d978418b2698",
        "ced117c73edc917e96dea7cca98c91383f0792f7"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Apr 02 21:09:10 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Apr 02 21:09:10 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  Remove two unneeded exports and make two symbols static in fs/mpage.c\n  Cleanup after commit 585d3bc06f4ca57f975a5a1f698f65a45ea66225\n  Trim includes of fdtable.h\n  Don\u0027t crap into descriptor table in binfmt_som\n  Trim includes in binfmt_elf\n  Don\u0027t mess with descriptor table in load_elf_binary()\n  Get rid of indirect include of fs_struct.h\n  New helper - current_umask()\n  check_unsafe_exec() doesn\u0027t care about signal handlers sharing\n  New locking/refcounting for fs_struct\n  Take fs_struct handling to new file (fs/fs_struct.c)\n  Get rid of bumping fs_struct refcount in pivot_root(2)\n  Kill unsharing fs_struct in __set_personality()\n"
    },
    {
      "commit": "97f76d3d197f201ac8a8a3ced5b8fef81568e50e",
      "tree": "8264f920a1f1a83e9cb0247ffe9390a7b6332852",
      "parents": [
        "9a896c9a48ac6704c0ce8ee081b836644d0afe40"
      ],
      "author": {
        "name": "Nikanth Karthikesan",
        "email": "knikanth@suse.de",
        "time": "Thu Apr 02 16:56:46 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Apr 02 19:04:49 2009 -0700"
      },
      "message": "vfs: check bh-\u003eb_blocknr only if BH_Mapped is set\n\nCheck bh-\u003eb_blocknr only if BH_Mapped is set.\n\nakpm: I doubt if b_blocknr is ever uninitialised here, but it could\nconceivably cause a problem if we\u0027re doing a lookup for block zero.\n\nSigned-off-by: Nikanth Karthikesan \u003cknikanth@suse.de\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "c2d7543851849a6923680cdd7e1047ed1a84a1c5",
      "tree": "bf3038819d4be83a1d1e64d7b95bbb3d9d908544",
      "parents": [
        "55a63998b8967615a15e2211ba0ff3a84a565824"
      ],
      "author": {
        "name": "Eric Sandeen",
        "email": "sandeen@redhat.com",
        "time": "Tue Mar 31 15:23:46 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 01 08:59:17 2009 -0700"
      },
      "message": "filesystem freeze: allow SysRq emergency thaw to thaw frozen filesystems\n\nNow that the filesystem freeze operation has been elevated to the VFS, and\nis just an ioctl away, some sort of safety net for unintentionally frozen\nroot filesystems may be in order.\n\nThe timeout thaw originally proposed did not get merged, but perhaps\nsomething like this would be useful in emergencies.\n\nFor example, freeze /path/to/mountpoint may freeze your root filesystem if\nyou forgot that you had that unmounted.\n\nI chose \u0027j\u0027 as the last remaining character other than \u0027h\u0027 which is sort\nof reserved for help (because help is generated on any unknown character).\n\nI\u0027ve tested this on a non-root fs with multiple (nested) freezers, as well\nas on a system rendered unresponsive due to a frozen root fs.\n\n[randy.dunlap@oracle.com: emergency thaw only if CONFIG_BLOCK enabled]\nSigned-off-by: Eric Sandeen \u003csandeen@redhat.com\u003e\nCc: Takashi Sato \u003ct-sato@yk.jp.nec.com\u003e\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "327c0e968645f2601a43f5ea7c19c7b3a5fa0a34",
      "tree": "acc6789c120a6d5000ceebf51e690d14c6cfcacb",
      "parents": [
        "2678958e1225f350806d90f211a3b475f64aee80"
      ],
      "author": {
        "name": "KAMEZAWA Hiroyuki",
        "email": "kamezawa.hiroyu@jp.fujitsu.com",
        "time": "Tue Mar 31 15:23:31 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 01 08:59:15 2009 -0700"
      },
      "message": "vmscan: fix it to take care of nodemask\n\ntry_to_free_pages() is used for the direct reclaim of up to\nSWAP_CLUSTER_MAX pages when watermarks are low.  The caller to\nalloc_pages_nodemask() can specify a nodemask of nodes that are allowed to\nbe used but this is not passed to try_to_free_pages().  This can lead to\nunnecessary reclaim of pages that are unusable by the caller and int the\nworst case lead to allocation failure as progress was not been make where\nit is needed.\n\nThis patch passes the nodemask used for alloc_pages_nodemask() to\ntry_to_free_pages().\n\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "56a76f8275c379ed73c8a43cfa1dfa2f5e9cfa19",
      "tree": "cbeaa82516c4818f72535b6ebe48a607cef88af4",
      "parents": [
        "c2ec175c39f62949438354f603f4aa170846aabb"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Tue Mar 31 15:23:23 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 01 08:59:14 2009 -0700"
      },
      "message": "fs: fix page_mkwrite error cases in core code and btrfs\n\npage_mkwrite is called with neither the page lock nor the ptl held.  This\nmeans a page can be concurrently truncated or invalidated out from\nunderneath it.  Callers are supposed to prevent truncate races themselves,\nhowever previously the only thing they can do in case they hit one is to\nraise a SIGBUS.  A sigbus is wrong for the case that the page has been\ninvalidated or truncated within i_size (eg.  hole punched).  Callers may\nalso have to perform memory allocations in this path, where again, SIGBUS\nwould be wrong.\n\nThe previous patch (\"mm: page_mkwrite change prototype to match fault\")\nmade it possible to properly specify errors.  Convert the generic buffer.c\ncode and btrfs to return sane error values (in the case of page removed\nfrom pagecache, VM_FAULT_NOPAGE will cause the fault handler to exit\nwithout doing anything, and the fault will be retried properly).\n\nThis fixes core code, and converts btrfs as a template/example.  All other\nfilesystems defining their own page_mkwrite should be fixed in a similar\nmanner.\n\nAcked-by: Chris Mason \u003cchris.mason@oracle.com\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "c2ec175c39f62949438354f603f4aa170846aabb",
      "tree": "f2c9bf1bec2deabe2d3a5092405b027637b6ead3",
      "parents": [
        "c2fdf3a9b2d52842808a8e551b53b55dd9b45030"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Tue Mar 31 15:23:21 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 01 08:59:14 2009 -0700"
      },
      "message": "mm: page_mkwrite change prototype to match fault\n\nChange the page_mkwrite prototype to take a struct vm_fault, and return\nVM_FAULT_xxx flags.  There should be no functional change.\n\nThis makes it possible to return much more detailed error information to\nthe VM (and also can provide more information eg.  virtual_address to the\ndriver, which might be important in some special cases).\n\nThis is required for a subsequent fix.  And will also make it easier to\nmerge page_mkwrite() with fault() in future.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Chris Mason \u003cchris.mason@oracle.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nCc: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nCc: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\nCc: Mark Fasheh \u003cmfasheh@suse.com\u003e\nCc: Joel Becker \u003cjoel.becker@oracle.com\u003e\nCc: Artem Bityutskiy \u003cdedekind@infradead.org\u003e\nCc: Felix Blyakher \u003cfelixb@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e3a7cca1ef4c1af9b0acef9bd66eff6582a737b5",
      "tree": "717097ec82ce0de55e44b2fe3e35fa041e5169b2",
      "parents": [
        "bd2f6199cf9af472aeefa1b642c9f504f19e6008"
      ],
      "author": {
        "name": "Edward Shishkin",
        "email": "edward.shishkin@gmail.com",
        "time": "Tue Mar 31 15:19:39 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 01 08:59:12 2009 -0700"
      },
      "message": "vfs: add/use account_page_dirtied()\n\nAdd a helper function account_page_dirtied().  Use that from two\ncallsites.  reiser4 adds a function which adds a third callsite.\n\nSigned-off-by: Edward Shishkin\u003cedward.shishkin@gmail.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "47e4491b40df73c3b117e3d80b31b5b512a4b19f",
      "tree": "a751af5e30db8f935b97bd671d0055d670b75fe5",
      "parents": [
        "e5824c97a993ac5bd22cec34e6cb6f85d39b73ba"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Apr 01 07:07:16 2009 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Apr 01 07:07:16 2009 -0400"
      },
      "message": "Cleanup after commit 585d3bc06f4ca57f975a5a1f698f65a45ea66225\n\nfsync_bdev() export and a bunch of stubs for !CONFIG_BLOCK case had\nbeen left behind\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "a64c8610bd3b753c6aff58f51c04cdf0ae478c18",
      "tree": "ca9ec4d9ca3d7195521a4004c6a599a35faafe5e",
      "parents": [
        "8e0ee43bc2c3e19db56a4adaa9a9b04ce885cd84"
      ],
      "author": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Fri Mar 27 22:14:10 2009 -0400"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Fri Mar 27 22:14:10 2009 -0400"
      },
      "message": "block_write_full_page: Use synchronous writes for WBC_SYNC_ALL writebacks\n\nWhen doing synchronous writes because wbc-\u003esync_mode is set to\nWBC_SYNC_ALL, send the write request using WRITE_SYNC, so that we\ndon\u0027t unduly block system calls such as fsync().\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\nAcked-by: Jan Kara \u003cjack@suse.cz\u003e\n"
    },
    {
      "commit": "585d3bc06f4ca57f975a5a1f698f65a45ea66225",
      "tree": "393cbd213e714f00c0cae85851e7837ed88b9a99",
      "parents": [
        "3ba13d179e8c24c68eac32b93593a6b10fcd1572"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Wed Feb 25 10:44:19 2009 +0100"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Fri Mar 27 14:44:03 2009 -0400"
      },
      "message": "fs: move bdev code out of buffer.c\n\nMove some block device related code out from buffer.c and put it in\nblock_dev.c. I\u0027m trying to move non-buffer_head code out of buffer.c\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "a8e7d49aa7be728c4ae241a75a2a124cdcabc0c5",
      "tree": "fec49351496b886d8aa0e7b55e58c2f1394b051a",
      "parents": [
        "68df3755e383e6fecf2354a67b08f92f18536594"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Mar 19 11:32:05 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Mar 19 11:32:05 2009 -0700"
      },
      "message": "Fix race in create_empty_buffers() vs __set_page_dirty_buffers()\n\nNick Piggin noticed this (very unlikely) race between setting a page\ndirty and creating the buffers for it - we need to hold the mapping\nprivate_lock until we\u0027ve set the page dirty bit in order to make sure\nthat create_empty_buffers() might not build up a set of buffers without\nthe dirty bits set when the page is dirty.\n\nI doubt anybody has ever hit this race (and it didn\u0027t solve the issue\nNick was looking at), but as Nick says: \"Still, it does appear to solve\na real race, which we should close.\"\n\nAcked-by: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ba95fd47d177d46743ad94055908d22840370e06",
      "tree": "f29e6921fefba2728c3b7f6854ac7f7729f602b2",
      "parents": [
        "59af0a0b5848caf38f1bf7013905c3e9cdba4d1d",
        "be987fdb55a4726e2fcbab7501f89276bdb57288"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Feb 18 18:33:04 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Feb 18 18:33:04 2009 -0800"
      },
      "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.dk/linux-2.6-block\n\n* \u0027for-linus\u0027 of git://git.kernel.dk/linux-2.6-block:\n  block: fix deadlock in blk_abort_queue() for drivers that readd to timeout list\n  block: fix booting from partitioned md array\n  block: revert part of 18ce3751ccd488c78d3827e9f6bf54e6322676fb\n  cciss: PCI power management reset for kexec\n  paride/pg.c: xs(): \u0026\u0026/|| confusion\n  fs/bio: bio_alloc_bioset: pass right object ptr to mempool_free\n  block: fix bad definition of BIO_RW_SYNC\n  bsg: Fix sense buffer bug in SG_IO\n"
    },
    {
      "commit": "1cf6e7d83bf334cc5916137862c920a97aabc018",
      "tree": "6bdbc4a98e9b332919beaeba0649797fff544795",
      "parents": [
        "610d18f4128ebbd88845d0fc60cce67b49af881e"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Wed Feb 18 14:48:18 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Feb 18 15:37:54 2009 -0800"
      },
      "message": "mm: task dirty accounting fix\n\nYAMAMOTO-san noticed that task_dirty_inc doesn\u0027t seem to be called properly for\ncases where set_page_dirty is not used to dirty a page (eg. mark_buffer_dirty).\n\nAdditionally, there is some inconsistency about when task_dirty_inc is\ncalled.  It is used for dirty balancing, however it even gets called for\n__set_page_dirty_no_writeback.\n\nSo rather than increment it in a set_page_dirty wrapper, move it down to\nexactly where the dirty page accounting stats are incremented.\n\nCc: YAMAMOTO Takashi \u003cyamamoto@valinux.co.jp\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "78f707bfc723552e8309b7c38a8d0cc51012e813",
      "tree": "67f47d32eac2cb8288a9469b47c1d8cefc6ce42a",
      "parents": [
        "82eb03cfd862a65363fa2826de0dbd5474cfe5e2"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Tue Feb 17 13:59:08 2009 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Wed Feb 18 10:32:01 2009 +0100"
      },
      "message": "block: revert part of 18ce3751ccd488c78d3827e9f6bf54e6322676fb\n\nThe above commit added WRITE_SYNC and switched various places to using\nthat for committing writes that will be waited upon immediately after\nsubmission. However, this causes a performance regression with AS and CFQ\nfor ext3 at least, since sync_dirty_buffer() will submit some writes with\nWRITE_SYNC while ext3 has sumitted others dependent writes without the sync\nflag set. This causes excessive anticipation/idling in the IO scheduler\nbecause sync and async writes get interleaved, causing a big performance\nregression for the below test case (which is meant to simulate sqlite\nlike behaviour).\n\n---- test case ----\n\nint main(int argc, char **argv)\n{\n\n\tint fdes, i;\n\tFILE *fp;\n\tstruct timeval start;\n\tstruct timeval end;\n\tstruct timeval res;\n\n\tgettimeofday(\u0026start, NULL);\n\tfor (i\u003d0; i\u003cROWS; i++) {\n\t\tfp \u003d fopen(\"test_file\", \"a\");\n\t\tfprintf(fp, \"Some Text Data\\n\");\n\t\tfdes \u003d fileno(fp);\n\t\tfsync(fdes);\n\t\tfclose(fp);\n\t}\n\tgettimeofday(\u0026end, NULL);\n\n\ttimersub(\u0026end, \u0026start, \u0026res);\n\tfprintf(stdout, \"time to write %d lines is %ld(msec)\\n\", ROWS,\n\t\t\t(res.tv_sec*1000000 + res.tv_usec)/1000);\n\n\treturn 0;\n}\n\n-------------------\n\nThanks to Sean.White@APCC.com for tracking down this performance\nregression and providing a test case.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "d4cf109f05ff04c6f5065c3e14165ef01a57dd53",
      "tree": "898a0d6b4d8934ec4939a8572e1b78dbb9689d93",
      "parents": [
        "6cec50838ed04a9833fb5549f698d3756bbe7e72"
      ],
      "author": {
        "name": "Dave Kleikamp",
        "email": "shaggy@linux.vnet.ibm.com",
        "time": "Fri Feb 06 14:59:26 2009 -0600"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Feb 06 13:34:22 2009 -0800"
      },
      "message": "vfs: Don\u0027t call attach_nobh_buffers() with an empty list\n\nThis is a modification of a patch by Bill Pemberton \u003cwfp5p@virginia.edu\u003e\n\nnobh_write_end() could call attach_nobh_buffers() with head \u003d\u003d NULL.\nThis would result in a trap when attach_nobh_buffers() attempted to\naccess bh-\u003eb_this_page.\n\nThis can be illustrated by running the writev01 testcase from LTP on jfs.\n\nThis error was introduced by commit 5b41e74a \"vfs: fix data leak in\nnobh_write_end()\".  That patch did not take into account that if\nPageMappedToDisk() is true upon entry to nobh_write_begin(), then no\nbuffers will be allocated for the page.  In that case, we won\u0027t have to\nworry about a failed write leaving unitialized data in the page.\n\nOf course, head !\u003d NULL implies !page_has_buffers(page), so no need to\ntest both.\n\nSigned-off-by: Dave Kleikamp \u003cshaggy@linux.vnet.ibm.com\u003e\nCc: Bill Pemberton \u003cwfp5p@virginia.edu\u003e\nCc: Dmitri Monakhov \u003cdmonakhov@openvz.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "bdc480e3bef6eb0e7071770834cbdda7e30a5436",
      "tree": "2bfea8d2b61ccedc3edea4f78e3250eea7f770cc",
      "parents": [
        "a5f8fa9e9ba5ef3305e147f41ad6e1e84ac1f0bd"
      ],
      "author": {
        "name": "Heiko Carstens",
        "email": "heiko.carstens@de.ibm.com",
        "time": "Wed Jan 14 14:14:12 2009 +0100"
      },
      "committer": {
        "name": "Heiko Carstens",
        "email": "heiko.carstens@de.ibm.com",
        "time": "Wed Jan 14 14:15:22 2009 +0100"
      },
      "message": "[CVE-2009-0029] System call wrappers part 10\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n"
    },
    {
      "commit": "fcccf502540e3d752d33b2d8e976034dee81f9f7",
      "tree": "401be4ad2fc3c535a2fc77e413b1be4a736f320c",
      "parents": [
        "c4be0c1dc4cdc37b175579be1460f15ac6495e9a"
      ],
      "author": {
        "name": "Takashi Sato",
        "email": "t-sato@yk.jp.nec.com",
        "time": "Fri Jan 09 16:40:59 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Jan 09 16:54:42 2009 -0800"
      },
      "message": "filesystem freeze: implement generic freeze feature\n\nThe ioctls for the generic freeze feature are below.\no Freeze the filesystem\n  int ioctl(int fd, int FIFREEZE, arg)\n    fd: The file descriptor of the mountpoint\n    FIFREEZE: request code for the freeze\n    arg: Ignored\n    Return value: 0 if the operation succeeds. Otherwise, -1\n\no Unfreeze the filesystem\n  int ioctl(int fd, int FITHAW, arg)\n    fd: The file descriptor of the mountpoint\n    FITHAW: request code for unfreeze\n    arg: Ignored\n    Return value: 0 if the operation succeeds. Otherwise, -1\n    Error number: If the filesystem has already been unfrozen,\n                  errno is set to EINVAL.\n\n[akpm@linux-foundation.org: fix CONFIG_BLOCK\u003dn]\nSigned-off-by: Takashi Sato \u003ct-sato@yk.jp.nec.com\u003e\nSigned-off-by: Masayuki Hamaguchi \u003cm-hamaguchi@ys.jp.nec.com\u003e\nCc: \u003cxfs-masters@oss.sgi.com\u003e\nCc: \u003clinux-ext4@vger.kernel.org\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Dave Kleikamp \u003cshaggy@austin.ibm.com\u003e\nCc: Dave Chinner \u003cdavid@fromorbit.com\u003e\nCc: Alasdair G Kergon \u003cagk@redhat.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "c4be0c1dc4cdc37b175579be1460f15ac6495e9a",
      "tree": "716ea88318211ed27cadcebda0fd85c1f8246edb",
      "parents": [
        "69347a236b22c3962ea812511495e502dedfd50c"
      ],
      "author": {
        "name": "Takashi Sato",
        "email": "t-sato@yk.jp.nec.com",
        "time": "Fri Jan 09 16:40:58 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Jan 09 16:54:42 2009 -0800"
      },
      "message": "filesystem freeze: add error handling of write_super_lockfs/unlockfs\n\nCurrently, ext3 in mainline Linux doesn\u0027t have the freeze feature which\nsuspends write requests.  So, we cannot take a backup which keeps the\nfilesystem\u0027s consistency with the storage device\u0027s features (snapshot and\nreplication) while it is mounted.\n\nIn many case, a commercial filesystem (e.g.  VxFS) has the freeze feature\nand it would be used to get the consistent backup.\n\nIf Linux\u0027s standard filesystem ext3 has the freeze feature, we can do it\nwithout a commercial filesystem.\n\nSo I have implemented the ioctls of the freeze feature.\nI think we can take the consistent backup with the following steps.\n1. Freeze the filesystem with the freeze ioctl.\n2. Separate the replication volume or create the snapshot\n   with the storage device\u0027s feature.\n3. Unfreeze the filesystem with the unfreeze ioctl.\n4. Take the backup from the separated replication volume\n   or the snapshot.\n\nThis patch:\n\nVFS:\nChanged the type of write_super_lockfs and unlockfs from \"void\"\nto \"int\" so that they can return an error.\nRename write_super_lockfs and unlockfs of the super block operation\nfreeze_fs and unfreeze_fs to avoid a confusion.\n\next3, ext4, xfs, gfs2, jfs:\nChanged the type of write_super_lockfs and unlockfs from \"void\"\nto \"int\" so that write_super_lockfs returns an error if needed,\nand unlockfs always returns 0.\n\nreiserfs:\nChanged the type of write_super_lockfs and unlockfs from \"void\"\nto \"int\" so that they always return 0 (success) to keep a current behavior.\n\nSigned-off-by: Takashi Sato \u003ct-sato@yk.jp.nec.com\u003e\nSigned-off-by: Masayuki Hamaguchi \u003cm-hamaguchi@ys.jp.nec.com\u003e\nCc: \u003cxfs-masters@oss.sgi.com\u003e\nCc: \u003clinux-ext4@vger.kernel.org\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Dave Kleikamp \u003cshaggy@austin.ibm.com\u003e\nCc: Dave Chinner \u003cdavid@fromorbit.com\u003e\nCc: Alasdair G Kergon \u003cagk@redhat.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "69e9930993cfd70d82c8d9dd96fc3a88854d06fc",
      "tree": "2467f8e1fdb745f4ca5e94acf0aba09c74063125",
      "parents": [
        "4779280d1ea4d361af13ae77ba55217fbcd16d4c"
      ],
      "author": {
        "name": "Franck Bui-Huu",
        "email": "fbuihuu@gmail.com",
        "time": "Tue Jan 06 14:40:19 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Jan 06 15:59:08 2009 -0800"
      },
      "message": "block_write_begin(): remove useless goto\n\nSigned-off-by: Franck Bui-Huu \u003cfbuihuu@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": "54566b2c1594c2326a645a3551f9d989f7ba3c5e",
      "tree": "b373f3283fe5e197d0df29cd6b645c35adf1076c",
      "parents": [
        "e687d691cb3790d25e31c74f5941fd7c565e9df5"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Sun Jan 04 12:00:53 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sun Jan 04 13:33:20 2009 -0800"
      },
      "message": "fs: symlink write_begin allocation context fix\n\nWith the write_begin/write_end aops, page_symlink was broken because it\ncould no longer pass a GFP_NOFS type mask into the point where the\nallocations happened.  They are done in write_begin, which would always\nassume that the filesystem can be entered from reclaim.  This bug could\ncause filesystem deadlocks.\n\nThe funny thing with having a gfp_t mask there is that it doesn\u0027t really\nallow the caller to arbitrarily tinker with the context in which it can be\ncalled.  It couldn\u0027t ever be GFP_ATOMIC, for example, because it needs to\ntake the page lock.  The only thing any callers care about is __GFP_FS\nanyway, so turn that into a single flag.\n\nAdd a new flag for write_begin, AOP_FLAG_NOFS.  Filesystems can now act on\nthis flag in their write_begin function.  Change __grab_cache_page to\naccept a nofs argument as well, to honour that flag (while we\u0027re there,\nchange the name to grab_cache_page_write_begin which is more instructive\nand does away with random leading underscores).\n\nThis is really a more flexible way to go in the end anyway -- if a\nfilesystem happens to want any extra allocations aside from the pagecache\nones in ints write_begin function, it may now use GFP_KERNEL (rather than\nGFP_NOFS) for common case allocations (eg.  ocfs2_alloc_write_ctxt, for a\nrandom example).\n\n[kosaki.motohiro@jp.fujitsu.com: fix ubifs]\n[kosaki.motohiro@jp.fujitsu.com: fix fuse]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: \u003cstable@kernel.org\u003e\t\t[2.6.28.x]\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\n[ Cleaned up the calling convention: just pass in the AOP flags\n  untouched to the grab_cache_page_write_begin() function.  That\n  just simplifies everybody, and may even allow future expansion of the\n  logic.   - Linus ]\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "08bafc0341f2f7920e9045bc32c40299cac8c21b",
      "tree": "ab4ad0f73f457409239a98c050bf7edd47c03cf1",
      "parents": [
        "7c239517d9f18427fc2e7ed259fb3b866595f5af"
      ],
      "author": {
        "name": "Keith Mannthey",
        "email": "kmannth@us.ibm.com",
        "time": "Tue Nov 25 10:24:35 2008 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Mon Dec 29 08:28:44 2008 +0100"
      },
      "message": "block: Supress Buffer I/O errors when SCSI REQ_QUIET flag set\n\nAllow the scsi request REQ_QUIET flag to be propagated to the buffer\nfile system layer. The basic ideas is to pass the flag from the scsi\nrequest to the bio (block IO) and then to the buffer layer.  The buffer\nlayer can then suppress needless printks.\n\nThis patch declutters the kernel log by removed the 40-50 (per lun)\nbuffer io error messages seen during a boot in my multipath setup . It\nis a good chance any real errors will be missed in the \"noise\" it the\nlogs without this patch.\n\nDuring boot I see blocks of messages like\n\"\n__ratelimit: 211 callbacks suppressed\nBuffer I/O error on device sdm, logical block 5242879\nBuffer I/O error on device sdm, logical block 5242879\nBuffer I/O error on device sdm, logical block 5242847\nBuffer I/O error on device sdm, logical block 1\nBuffer I/O error on device sdm, logical block 5242878\nBuffer I/O error on device sdm, logical block 5242879\nBuffer I/O error on device sdm, logical block 5242879\nBuffer I/O error on device sdm, logical block 5242879\nBuffer I/O error on device sdm, logical block 5242879\nBuffer I/O error on device sdm, logical block 5242872\n\"\nin my logs.\n\nMy disk environment is multipath fiber channel using the SCSI_DH_RDAC\ncode and multipathd.  This topology includes an \"active\" and \"ghost\"\npath for each lun. IO\u0027s to the \"ghost\" path will never complete and the\nSCSI layer, via the scsi device handler rdac code, quick returns the IOs\nto theses paths and sets the REQ_QUIET scsi flag to suppress the scsi\nlayer messages.\n\n I am wanting to extend the QUIET behavior to include the buffer file\nsystem layer to deal with these errors as well. I have been running this\npatch for a while now on several boxes without issue.  A few runs of\nbonnie++ show no noticeable difference in performance in my setup.\n\nThanks for John Stultz for the quiet_error finalization.\n\nSubmitted-by:  Keith Mannthey \u003ckmannth@us.ibm.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "52b19ac993f1aeadbce15b55302be9a35346e235",
      "tree": "90695f8fdaa97d3a30b1e5f82016fb1cce3da16b",
      "parents": [
        "ed313489badef16d700f5a3be50e8fd8f8294bc8"
      ],
      "author": {
        "name": "Jan Kara",
        "email": "jack@suse.cz",
        "time": "Tue Sep 23 18:24:08 2008 +0200"
      },
      "committer": {
        "name": "Jan Kara",
        "email": "jack@suse.cz",
        "time": "Thu Nov 27 17:38:28 2008 +0100"
      },
      "message": "udf: Fix BUG_ON() in destroy_inode()\n\nudf_clear_inode() can leave behind buffers on mapping\u0027s i_private list (when\nwe truncated preallocation). Call invalidate_inode_buffers() so that the list\nis properly cleaned-up before we return from udf_clear_inode(). This is ugly\nand suggest that we should cleanup preallocation earlier than in clear_inode()\nbut currently there\u0027s no such call available since drop_inode() is called under\ninode lock and thus is unusable for disk operations.\n\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\n"
    },
    {
      "commit": "51b07fc3c5c830bb49c80fc5eac041e1f66a72e7",
      "tree": "7d01d39f5eb5ac601d95c1e133492bd83135af6c",
      "parents": [
        "8413ac9d8c9a1366a4f57880723126cd24e5a5c3"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Sat Oct 18 20:27:00 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Oct 20 08:52:32 2008 -0700"
      },
      "message": "fs: buffer lock use lock bitops\n\ntrylock_buffer and unlock_buffer open and close a critical section.\nHence, we can use the lock bitops to get the desired memory ordering.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "48fd4f93a00eac844678629f2f00518e146ed30d",
      "tree": "c71f6792742886db9912078c70b3e8806e9f260f",
      "parents": [
        "a4a778971b9cfcbedb8648ba502d801f7db04c47"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Fri Aug 22 10:00:36 2008 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Wed Aug 27 09:50:19 2008 +0200"
      },
      "message": "block: submit_bh() inadvertently discards barrier flag on a sync write\n\nReported by Milan Broz \u003cmbroz@redhat.com\u003e, commit 18ce3751 inadvertently\nmade submit_bh() discard the barrier bit for a WRITE_SYNC request. Fix\nthat up.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "ca5de404ff036a29b25e9a83f6919c9f606c5841",
      "tree": "474da867c4d4086313cee90cdc3560bb17fade96",
      "parents": [
        "529ae9aaa08378cfe2a4350bded76f32cc8ff0ce"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Sat Aug 02 12:02:13 2008 +0200"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Aug 04 21:56:09 2008 -0700"
      },
      "message": "fs: rename buffer trylock\n\nLike the page lock change, this also requires name change, so convert the\nraw test_and_set bitop to a trylock.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "dbacefc9c4f6bd365243db379473ab7041656d90",
      "tree": "01bcdbe23ea7008971161366dab56bfc47b2049a",
      "parents": [
        "d406f66ddb0d7491ddd53e4600c425d76a8a245f"
      ],
      "author": {
        "name": "Thomas Petazzoni",
        "email": "thomas.petazzoni@free-electrons.com",
        "time": "Tue Jul 29 22:33:47 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Jul 30 09:41:46 2008 -0700"
      },
      "message": "fs/buffer.c: uninline __remove_assoc_queue()\n\nUninline the __remove_assoc_queue() function in fs/buffer.c, called at too\nmany places and too long to really be inlined.  Size results:\n\n   text\t   data\t    bss\t    dec\t    hex\tfilename\n1134606\t 118840\t 212992\t1466438\t 166046\tvmlinux.old\n1134303\t 118840\t 212992\t1466135\t 165f17\tvmlinux\n   -303       0       0    -303    -12F +/-\n\nThis patch is part of the Linux Tiny project and has been originally\nwritten by Matt Mackall \u003cmpm@selenic.com\u003e.\n\nSigned-off-by: Thomas Petazzoni \u003cthomas.petazzoni@free-electrons.com\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "8ab22b9abb5c55413802e4adc9aa6223324547c3",
      "tree": "cff3319e1275e8a7c083d492889ec6bd0c7712d3",
      "parents": [
        "d84a52f62f6a396ed77aa0052da74ca9e760b28a"
      ],
      "author": {
        "name": "Hisashi Hifumi",
        "email": "hifumi.hisashi@oss.ntt.co.jp",
        "time": "Mon Jul 28 15:46:36 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Jul 28 16:30:21 2008 -0700"
      },
      "message": "vfs: pagecache usage optimization for pagesize!\u003dblocksize\n\nWhen we read some part of a file through pagecache, if there is a\npagecache of corresponding index but this page is not uptodate, read IO\nis issued and this page will be uptodate.\n\nI think this is good for pagesize \u003d\u003d blocksize environment but there is\nroom for improvement on pagesize !\u003d blocksize environment.  Because in\nthis case a page can have multiple buffers and even if a page is not\nuptodate, some buffers can be uptodate.\n\nSo I suggest that when all buffers which correspond to a part of a file\nthat we want to read are uptodate, use this pagecache and copy data from\nthis pagecache to user buffer even if a page is not uptodate.  This can\nreduce read IO and improve system throughput.\n\nI wrote a benchmark program and got result number with this program.\n\nThis benchmark do:\n\n  1: mount and open a test file.\n\n  2: create a 512MB file.\n\n  3: close a file and umount.\n\n  4: mount and again open a test file.\n\n  5: pwrite randomly 300000 times on a test file.  offset is aligned\n     by IO size(1024bytes).\n\n  6: measure time of preading randomly 100000 times on a test file.\n\nThe result was:\n\t2.6.26\n        330 sec\n\n\t2.6.26-patched\n        226 sec\n\nArch:i386\nFilesystem:ext3\nBlocksize:1024 bytes\nMemory: 1GB\n\nOn ext3/4, a file is written through buffer/block.  So random read/write\nmixed workloads or random read after random write workloads are optimized\nwith this patch under pagesize !\u003d blocksize environment.  This test result\nshowed this.\n\nThe benchmark program is as follows:\n\n#include \u003cstdio.h\u003e\n#include \u003csys/types.h\u003e\n#include \u003csys/stat.h\u003e\n#include \u003cfcntl.h\u003e\n#include \u003cunistd.h\u003e\n#include \u003ctime.h\u003e\n#include \u003cstdlib.h\u003e\n#include \u003cstring.h\u003e\n#include \u003csys/mount.h\u003e\n\n#define LEN 1024\n#define LOOP 1024*512 /* 512MB */\n\nmain(void)\n{\n\tunsigned long i, offset, filesize;\n\tint fd;\n\tchar buf[LEN];\n\ttime_t t1, t2;\n\n\tif (mount(\"/dev/sda1\", \"/root/test1/\", \"ext3\", 0, 0) \u003c 0) {\n\t\tperror(\"cannot mount\\n\");\n\t\texit(1);\n\t}\n\tmemset(buf, 0, LEN);\n\tfd \u003d open(\"/root/test1/testfile\", O_CREAT|O_RDWR|O_TRUNC);\n\tif (fd \u003c 0) {\n\t\tperror(\"cannot open file\\n\");\n\t\texit(1);\n\t}\n\tfor (i \u003d 0; i \u003c LOOP; i++)\n\t\twrite(fd, buf, LEN);\n\tclose(fd);\n\tif (umount(\"/root/test1/\") \u003c 0) {\n\t\tperror(\"cannot umount\\n\");\n\t\texit(1);\n\t}\n\tif (mount(\"/dev/sda1\", \"/root/test1/\", \"ext3\", 0, 0) \u003c 0) {\n\t\tperror(\"cannot mount\\n\");\n\t\texit(1);\n\t}\n\tfd \u003d open(\"/root/test1/testfile\", O_RDWR);\n\tif (fd \u003c 0) {\n\t\tperror(\"cannot open file\\n\");\n\t\texit(1);\n\t}\n\n\tfilesize \u003d LEN * LOOP;\n\tfor (i \u003d 0; i \u003c 300000; i++){\n\t\toffset \u003d (random() % filesize) \u0026 (~(LEN - 1));\n\t\tpwrite(fd, buf, LEN, offset);\n\t}\n\tprintf(\"start test\\n\");\n\ttime(\u0026t1);\n\tfor (i \u003d 0; i \u003c 100000; i++){\n\t\toffset \u003d (random() % filesize) \u0026 (~(LEN - 1));\n\t\tpread(fd, buf, LEN, offset);\n\t}\n\ttime(\u0026t2);\n\tprintf(\"%ld sec\\n\", t2-t1);\n\tclose(fd);\n\tif (umount(\"/root/test1/\") \u003c 0) {\n\t\tperror(\"cannot umount\\n\");\n\t\texit(1);\n\t}\n}\n\nSigned-off-by: Hisashi Hifumi \u003chifumi.hisashi@oss.ntt.co.jp\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Jan Kara \u003cjack@ucw.cz\u003e\nCc: \u003clinux-ext4@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "5c752ad9f35910ff1912b3f3ae82878178ddc432",
      "tree": "4ac627f9cdd7f0e1b0557b9b5c4838587c1c0890",
      "parents": [
        "5cd2b459d326a424671dcd95f038649f7bf7cb96"
      ],
      "author": {
        "name": "Arjan van de Ven",
        "email": "arjan@linux.intel.com",
        "time": "Fri Jul 25 19:45:40 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Jul 26 12:00:07 2008 -0700"
      },
      "message": "Use WARN() in fs/\n\nUse WARN() instead of a printk+WARN_ON() pair; this way the message\nbecomes part of the warning section for better reporting/collection.\n\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "51cc50685a4275c6a02653670af9f108a64e01cf",
      "tree": "819d47bd2b0c8a9d1835d863853804b0a0242b97",
      "parents": [
        "d91958815d214ea365b98cbff6215383897edcb6"
      ],
      "author": {
        "name": "Alexey Dobriyan",
        "email": "adobriyan@gmail.com",
        "time": "Fri Jul 25 19:45:34 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Jul 26 12:00:07 2008 -0700"
      },
      "message": "SL*B: drop kmem cache argument from constructor\n\nKmem cache passed to constructor is only needed for constructors that are\nthemselves multiplexeres.  Nobody uses this \"feature\", nor does anybody uses\npassed kmem cache in non-trivial way, so pass only pointer to object.\n\nNon-trivial places are:\n\tarch/powerpc/mm/init_64.c\n\tarch/powerpc/mm/hugetlbpage.c\n\nThis is flag day, yes.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nAcked-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Jon Tollefson \u003ckniht@linux.vnet.ibm.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\n[akpm@linux-foundation.org: fix arch/powerpc/mm/hugetlbpage.c]\n[akpm@linux-foundation.org: fix mm/slab.c]\n[akpm@linux-foundation.org: fix ubifs]\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "19fd6231279be3c3bdd02ed99f9b0eb195978064",
      "tree": "ee09121054262d73c551b57114acd855b82a7a82",
      "parents": [
        "a60637c85893e7191faaafa6a72e197c24386727"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@suse.de",
        "time": "Fri Jul 25 19:45:32 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Jul 26 12:00:06 2008 -0700"
      },
      "message": "mm: spinlock tree_lock\n\nmapping-\u003etree_lock has no read lockers.  convert the lock from an rwlock\nto a spinlock.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: \"Paul E. McKenney\" \u003cpaulmck@us.ibm.com\u003e\nReviewed-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "1a781a777b2f6ac46523fe92396215762ced624d",
      "tree": "4f34bb4aade85c0eb364b53d664ec7f6ab959006",
      "parents": [
        "b9d2252c1e44fa83a4e65fdc9eb93db6297c55af",
        "42a2f217a5e324ed5f2373ab1b7a0a15187c4d6c"
      ],
      "author": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue Jul 15 21:55:59 2008 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue Jul 15 21:55:59 2008 +0200"
      },
      "message": "Merge branch \u0027generic-ipi\u0027 into generic-ipi-for-linus\n\nConflicts:\n\n\tarch/powerpc/Kconfig\n\tarch/s390/kernel/time.c\n\tarch/x86/kernel/apic_32.c\n\tarch/x86/kernel/cpu/perfctr-watchdog.c\n\tarch/x86/kernel/i8259_64.c\n\tarch/x86/kernel/ldt.c\n\tarch/x86/kernel/nmi_64.c\n\tarch/x86/kernel/smpboot.c\n\tarch/x86/xen/smp.c\n\tinclude/asm-x86/hw_irq_32.h\n\tinclude/asm-x86/hw_irq_64.h\n\tinclude/asm-x86/mach-default/irq_vectors.h\n\tinclude/asm-x86/mach-voyager/irq_vectors.h\n\tinclude/asm-x86/smp.h\n\tkernel/Makefile\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "29a814d2ee0e43c2980f33f91c1311ec06c0aa35",
      "tree": "dfc9d45fc3194237192b6cde1069faa70fe4c260",
      "parents": [
        "87c89c232c8f7b3820c33c3b9bc803e9358027da"
      ],
      "author": {
        "name": "Alex Tomas",
        "email": "alex@clusterfs.com",
        "time": "Fri Jul 11 19:27:31 2008 -0400"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Fri Jul 11 19:27:31 2008 -0400"
      },
      "message": "vfs: add hooks for ext4\u0027s delayed allocation support\n\nExport mpage_bio_submit() and __mpage_writepage() for the benefit of\next4\u0027s delayed allocation support.   Also change __block_write_full_page\nso that if buffers that have the BH_Delay flag set it will call\nget_block() to get the physical block allocated, just as in the\n!BH_Mapped case.\n\nSigned-off-by: Alex Tomas \u003calex@clusterfs.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n\n"
    },
    {
      "commit": "c7d206b3379f7d6462e778b74f475c470ee3dcaf",
      "tree": "71d11797c72e2e4ee04e6690c048fd26f25ae90d",
      "parents": [
        "2e9ee850355593e311d9a26542290fe51e152f74"
      ],
      "author": {
        "name": "Jan Kara",
        "email": "jack@suse.cz",
        "time": "Fri Jul 11 19:27:31 2008 -0400"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Fri Jul 11 19:27:31 2008 -0400"
      },
      "message": "vfs: Move mark_inode_dirty() from under page lock in generic_write_end()\n\nThere\u0027s no need to call mark_inode_dirty() under page lock in\ngeneric_write_end(). It unnecessarily makes hold time of page lock longer\nand more importantly it forces locking order of page lock and transaction\nstart for journaling filesystems.\n\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Aneesh Kumar K.V \u003caneesh.kumar@linux.vnet.ibm.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n\n"
    },
    {
      "commit": "18ce3751ccd488c78d3827e9f6bf54e6322676fb",
      "tree": "4bb83c2b963e8ebe918b79f61d1a440fb1d28f8d",
      "parents": [
        "d585d0b9d73ed999cc7b8cf3cac4a5b01abb544e"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Tue Jul 01 09:07:34 2008 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Tue Jul 01 09:07:34 2008 +0200"
      },
      "message": "Properly notify block layer of sync writes\n\nfsync_buffers_list() and sync_dirty_buffer() both issue async writes and\nthen immediately wait on them. Conceptually, that makes them sync writes\nand we should treat them as such so that the IO schedulers can handle\nthem appropriately.\n\nThis patch fixes a write starvation issue that Lin Ming reported, where\nxx is stuck for more than 2 minutes because of a large number of\nsynchronous IO in the system:\n\nINFO: task kjournald:20558 blocked for more than 120 seconds.\n\"echo 0 \u003e /proc/sys/kernel/hung_task_timeout_secs\" disables this\nmessage.\nkjournald     D ffff810010820978  6712 20558      2\nffff81022ddb1d10 0000000000000046 ffff81022e7baa10 ffffffff803ba6f2\nffff81022ecd0000 ffff8101e6dc9160 ffff81022ecd0348 000000008048b6cb\n0000000000000086 ffff81022c4e8d30 0000000000000000 ffffffff80247537\nCall Trace:\n[\u003cffffffff803ba6f2\u003e] kobject_get+0x12/0x17\n[\u003cffffffff80247537\u003e] getnstimeofday+0x2f/0x83\n[\u003cffffffff8029c1ac\u003e] sync_buffer+0x0/0x3f\n[\u003cffffffff8066d195\u003e] io_schedule+0x5d/0x9f\n[\u003cffffffff8029c1e7\u003e] sync_buffer+0x3b/0x3f\n[\u003cffffffff8066d3f0\u003e] __wait_on_bit+0x40/0x6f\n[\u003cffffffff8029c1ac\u003e] sync_buffer+0x0/0x3f\n[\u003cffffffff8066d48b\u003e] out_of_line_wait_on_bit+0x6c/0x78\n[\u003cffffffff80243909\u003e] wake_bit_function+0x0/0x23\n[\u003cffffffff8029e3ad\u003e] sync_dirty_buffer+0x98/0xcb\n[\u003cffffffff8030056b\u003e] journal_commit_transaction+0x97d/0xcb6\n[\u003cffffffff8023a676\u003e] lock_timer_base+0x26/0x4b\n[\u003cffffffff8030300a\u003e] kjournald+0xc1/0x1fb\n[\u003cffffffff802438db\u003e] autoremove_wake_function+0x0/0x2e\n[\u003cffffffff80302f49\u003e] kjournald+0x0/0x1fb\n[\u003cffffffff802437bb\u003e] kthread+0x47/0x74\n[\u003cffffffff8022de51\u003e] schedule_tail+0x28/0x5d\n[\u003cffffffff8020cac8\u003e] child_rip+0xa/0x12\n[\u003cffffffff80243774\u003e] kthread+0x0/0x74\n[\u003cffffffff8020cabe\u003e] child_rip+0x0/0x12\n\nLin Ming confirms that this patch fixes the issue. I\u0027ve run tests with\nit for the past week and no ill effects have been observed, so I\u0027m\nproposing it for inclusion into 2.6.26.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "15c8b6c1aaaf1c4edd67e2f02e4d8e1bd1a51c0d",
      "tree": "3658f893c2f89ea0be4c6cc08aa11fa54476d0f4",
      "parents": [
        "8691e5a8f691cc2a4fda0651e8d307aaba0e7d68"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Fri May 09 09:39:44 2008 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Thu Jun 26 11:24:38 2008 +0200"
      },
      "message": "on_each_cpu(): kill unused \u0027retry\u0027 parameter\n\nIt\u0027s not even passed on to smp_call_function() anymore, since that\nwas removed. So kill it.\n\nAcked-by: Jeremy Fitzhardinge \u003cjeremy.fitzhardinge@citrix.com\u003e\nReviewed-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "8e24eea728068bbeb6a3c500b848f883a20bf225",
      "tree": "93e79da649723e2766237505b22725fec395f139",
      "parents": [
        "530b6412786d7f83592c1a8e2445541ed73fca76"
      ],
      "author": {
        "name": "Harvey Harrison",
        "email": "harvey.harrison@gmail.com",
        "time": "Wed Apr 30 00:55:09 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 30 08:29:54 2008 -0700"
      },
      "message": "fs: replace remaining __FUNCTION__ occurrences\n\n__FUNCTION__ is gcc-specific, use __func__\n\nSigned-off-by: Harvey Harrison \u003charvey.harrison@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "f1e3af72c10ba74fb15864c354515ec1bd8bf2a5",
      "tree": "faf2d2f8b0264fd175acf8ed5623c74e0da908ec",
      "parents": [
        "946a57b526a16e5662235cb8f573337bc8ecdc48"
      ],
      "author": {
        "name": "Adrian Bunk",
        "email": "bunk@kernel.org",
        "time": "Tue Apr 29 00:59:01 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 29 08:06:01 2008 -0700"
      },
      "message": "make fs/buffer.c:cont_expand_zero() static\n\ncont_expand_zero() can become static.\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "946a57b526a16e5662235cb8f573337bc8ecdc48",
      "tree": "e7805833cf724d2bf2b5ebfe0fc7bb4d8cd2c321",
      "parents": [
        "45cc2b96f20fa27088a650587e5d9dc5fa5e32c0"
      ],
      "author": {
        "name": "Adrian Bunk",
        "email": "bunk@kernel.org",
        "time": "Tue Apr 29 00:59:00 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 29 08:06:01 2008 -0700"
      },
      "message": "remove generic_commit_write()\n\nRemove the obsolete and no longer used generic_commit_write().\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\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": "061e97469f46f924cf14bbf1dd4805b46986691a",
      "tree": "f89bae50777ff9d7a8dc917342f55218de132166",
      "parents": [
        "e69be4c9c4ac1b6bb6380512557da0afa6262e98"
      ],
      "author": {
        "name": "OGAWA Hirofumi",
        "email": "hirofumi@mail.parknet.co.jp",
        "time": "Mon Apr 28 02:16:28 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:47 2008 -0700"
      },
      "message": "Add balance_dirty_pages_ratelimited() to cont_expand_zero()\n\nOn the systems, ftruncate() which expand size for FAT became the cause\nof OOM.  The cont_expand_zero() filled all memory with dirty pages,\nand since disk is very slow, limit of page scanning was exceeded, then\nit triggered OOM.\n\nThis adds balance_dirty_pages_ratelimited() to avoid filling memory\nwith dirty pages.\n\nSigned-off-by: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "19770b32609b6bf97a3dece2529089494cbfc549",
      "tree": "3b5922d1b20aabdf929bde9309f323841717747a",
      "parents": [
        "dd1a239f6f2d4d3eedd318583ec319aa145b324c"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Mon Apr 28 02:12:18 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:19 2008 -0700"
      },
      "message": "mm: filter based on a nodemask as well as a gfp_mask\n\nThe MPOL_BIND policy creates a zonelist that is used for allocations\ncontrolled by that mempolicy.  As the per-node zonelist is already being\nfiltered based on a zone id, this patch adds a version of __alloc_pages() that\ntakes a nodemask for further filtering.  This eliminates the need for\nMPOL_BIND to create a custom zonelist.\n\nA positive benefit of this is that allocations using MPOL_BIND now use the\nlocal node\u0027s distance-ordered zonelist instead of a custom node-id-ordered\nzonelist.  I.e., pages will be allocated from the closest allowed node with\navailable memory.\n\n[Lee.Schermerhorn@hp.com: Mempolicy: update stale documentation and comments]\n[Lee.Schermerhorn@hp.com: Mempolicy: make dequeue_huge_page_vma() obey MPOL_BIND nodemask]\n[Lee.Schermerhorn@hp.com: Mempolicy: make dequeue_huge_page_vma() obey MPOL_BIND nodemask rework]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "dd1a239f6f2d4d3eedd318583ec319aa145b324c",
      "tree": "aff4224c96b5e2e67588c3946858a724863eeaf9",
      "parents": [
        "54a6eb5c4765aa573a030ceeba2c14e3d2ea5706"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Mon Apr 28 02:12:17 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:18 2008 -0700"
      },
      "message": "mm: have zonelist contains structs with both a zone pointer and zone_idx\n\nFiltering zonelists requires very frequent use of zone_idx().  This is costly\nas it involves a lookup of another structure and a substraction operation.  As\nthe zone_idx is often required, it should be quickly accessible.  The node idx\ncould also be stored here if it was found that accessing zone-\u003enode is\nsignificant which may be the case on workloads where nodemasks are heavily\nused.\n\nThis patch introduces a struct zoneref to store a zone pointer and a zone\nindex.  The zonelist then consists of an array of these struct zonerefs which\nare looked up as necessary.  Helpers are given for accessing the zone index as\nwell as the node index.\n\n[kamezawa.hiroyu@jp.fujitsu.com: Suggested struct zoneref instead of embedding information in pointers]\n[hugh@veritas.com: mm-have-zonelist: fix memcg ooms]\n[hugh@veritas.com: just return do_try_to_free_pages]\n[hugh@veritas.com: do_try_to_free_pages gfp_mask redundant]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "54a6eb5c4765aa573a030ceeba2c14e3d2ea5706",
      "tree": "547176a090beb787722a153cf2b8b942dc0e68db",
      "parents": [
        "18ea7e710d2452fa726814a406779188028cf1bf"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Mon Apr 28 02:12:16 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:18 2008 -0700"
      },
      "message": "mm: use two zonelist that are filtered by GFP mask\n\nCurrently a node has two sets of zonelists, one for each zone type in the\nsystem and a second set for GFP_THISNODE allocations.  Based on the zones\nallowed by a gfp mask, one of these zonelists is selected.  All of these\nzonelists consume memory and occupy cache lines.\n\nThis patch replaces the multiple zonelists per-node with two zonelists.  The\nfirst contains all populated zones in the system, ordered by distance, for\nfallback allocations when the target/preferred node has no free pages.  The\nsecond contains all populated zones in the node suitable for GFP_THISNODE\nallocations.\n\nAn iterator macro is introduced called for_each_zone_zonelist() that interates\nthrough each zone allowed by the GFP flags in the selected zonelist.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "0e88460da6ab7bb6a7ef83675412ed5b6315d741",
      "tree": "1feb4de2362e4998a0deeab66af1efb9c7b8bb34",
      "parents": [
        "dac1d27bc8d5ca636d3014ecfdf94407031d1970"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Mon Apr 28 02:12:14 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:18 2008 -0700"
      },
      "message": "mm: introduce node_zonelist() for accessing the zonelist for a GFP mask\n\nIntroduce a node_zonelist() helper function.  It is used to lookup the\nappropriate zonelist given a node and a GFP mask.  The patch on its own is a\ncleanup but it helps clarify parts of the two-zonelist-per-node patchset.  If\nnecessary, it can be merged with the next patch in this set without problems.\n\nReviewed-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    }
  ],
  "next": "dac1d27bc8d5ca636d3014ecfdf94407031d1970"
}