)]}'
{
  "log": [
    {
      "commit": "c6e49e3f266dbe62773941dca8afa65f53b5415f",
      "tree": "d16592189d8ea9fafb15d5dcbfc1a18d3bbf8d97",
      "parents": [
        "64f1426f3c4f8dde9ac9bf3f3b19b88d17f2bae6"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Tue Jul 26 03:07:14 2011 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Tue Jan 03 22:55:04 2012 -0500"
      },
      "message": "nilfs: propagate umode_t\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "b9075fa968a0a4347aef35e235e2995c0e57dddd",
      "tree": "cf9f9716784e790d8a43339653256d9cf9178ff3",
      "parents": [
        "ae29bc92da01a2e9d278a9a58c3b307d41cc0254"
      ],
      "author": {
        "name": "Joe Perches",
        "email": "joe@perches.com",
        "time": "Mon Oct 31 17:11:33 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Oct 31 17:30:54 2011 -0700"
      },
      "message": "treewide: use __printf not __attribute__((format(printf,...)))\n\nStandardize the style for compiler based printf format verification.\nStandardized the location of __printf too.\n\nDone via script and a little typing.\n\n$ grep -rPl --include\u003d*.[ch] -w \"__attribute__\" * | \\\n  grep -vP \"^(tools|scripts|include/linux/compiler-gcc.h)\" | \\\n  xargs perl -n -i -e \u0027local $/; while (\u003c\u003e) { s/\\b__attribute__\\s*\\(\\s*\\(\\s*format\\s*\\(\\s*printf\\s*,\\s*(.+)\\s*,\\s*(.+)\\s*\\)\\s*\\)\\s*\\)/__printf($1, $2)/g ; print; }\u0027\n\n[akpm@linux-foundation.org: revert arch bits]\nSigned-off-by: Joe Perches \u003cjoe@perches.com\u003e\nCc: \"Kirill A. Shutemov\" \u003ckirill@shutemov.name\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "02c24a82187d5a628c68edfe71ae60dc135cd178",
      "tree": "c8dbaba4d82e2b20ed4335910a564a1f7d90fcf6",
      "parents": [
        "22735068d53c7115e384bc88dea95b17e76a6839"
      ],
      "author": {
        "name": "Josef Bacik",
        "email": "josef@redhat.com",
        "time": "Sat Jul 16 20:44:56 2011 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Jul 20 20:47:59 2011 -0400"
      },
      "message": "fs: push i_mutex and filemap_write_and_wait down into -\u003efsync() handlers\n\nBtrfs needs to be able to control how filemap_write_and_wait_range() is called\nin fsync to make it less of a painful operation, so push down taking i_mutex and\nthe calling of filemap_write_and_wait() down into the -\u003efsync() handlers.  Some\nfile systems can drop taking the i_mutex altogether it seems, like ext3 and\nocfs2.  For correctness sake I just pushed everything down in all cases to make\nsure that we keep the current behavior the same for everybody, and then each\nindividual fs maintainer can make up their mind about what to do from there.\nThanks,\n\nAcked-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "10556cb21a0d0b24d95f00ea6df16f599a3345b2",
      "tree": "3d7d8dfba807805a55c154f1850717bf3b49f343",
      "parents": [
        "2830ba7f34ebb27c4e5b8b6ef408cd6d74860890"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Jun 20 19:28:19 2011 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Jul 20 01:43:24 2011 -0400"
      },
      "message": "-\u003epermission() sanitizing: don\u0027t pass flags to -\u003epermission()\n\nnot used by the instances anymore.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "aa38572954ade525817fe88c54faebf85e5a61c0",
      "tree": "ef398ec06c97134592f62a49c99f3f80041b427c",
      "parents": [
        "d6e9bd256c88ce5f4b668249e363a74f51393daa"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@infradead.org",
        "time": "Fri May 27 06:53:02 2011 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Fri May 27 07:04:40 2011 -0400"
      },
      "message": "fs: pass exact type of data dirties to -\u003edirty_inode\n\nTell the filesystem if we just updated timestamp (I_DIRTY_SYNC) or\nanything else, so that the filesystem can track internally if it\nneeds to push out a transaction for fdatasync or not.\n\nThis is just the prototype change with no user for it yet.  I plan\nto push large XFS changes for the next merge window, and getting\nthis trivial infrastructure in this window would help a lot to avoid\ntree interdependencies.\n\nAlso remove incorrect comments that -\u003edirty_inode can\u0027t block.  That\nhas been changed a long time ago, and many implementations rely on it.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "aa405b1f4238401616e7d98620170b424b2dbefc",
      "tree": "c42986a31c3383490d010ae55a97c37f5095220c",
      "parents": [
        "0ef28f9aec4dccfba33cef74412f601c1b48b658"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Thu May 05 12:56:51 2011 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Tue May 10 22:21:57 2011 +0900"
      },
      "message": "nilfs2: always set back pointer to host inode in mapping-\u003ehost\n\nIn the current nilfs, page cache for btree nodes and meta data files\ndo not set a valid back pointer to the host inode in mapping-\u003ehost.\n\nThis will change it so that every address space in nilfs uses\nmapping-\u003ehost to hold its host inode.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "4e33f9eab07e985282fece4121066c2db1d332ed",
      "tree": "08161cabc013f0543d65d9c9ed63689f9f68803d",
      "parents": [
        "78eb64c2479e0f408b725c3c8e1cdf557857af48"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Thu May 05 01:23:58 2011 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Tue May 10 22:21:46 2011 +0900"
      },
      "message": "nilfs2: implement resize ioctl\n\nThis adds resize ioctl which makes online resize possible.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "af71dda0b8e667d03eec21d25f90265eec5efea1",
      "tree": "fe070073c86352f4ffd30381b8f7ba3a158d4619",
      "parents": [
        "d611b22f1a5ddd0823e9d6a30bac91219f800e41"
      ],
      "author": {
        "name": "Nicolas Kaiser",
        "email": "nikai@nikai.net",
        "time": "Sat Mar 19 16:47:54 2011 +0100"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Wed Mar 30 17:39:54 2011 +0900"
      },
      "message": "nilfs2: fix whitespace coding style issues\n\nFixes whitespace coding style issues.\n\nSigned-off-by: Nicolas Kaiser \u003cnikai@nikai.net\u003e\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "e3154e9748f0f337e9f6ff9dc7d7bf24d426bd1a",
      "tree": "ac2a3f3dca6189b8a608571c49da66386fd1bdec",
      "parents": [
        "f7545144c2e3d280139260df934043e0a6ccce6f"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Wed Mar 09 11:05:08 2011 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Wed Mar 09 11:54:26 2011 +0900"
      },
      "message": "nilfs2: get rid of nilfs_sb_info structure\n\nThis directly uses sb-\u003es_fs_info to keep a nilfs filesystem object and\nfully removes the intermediate nilfs_sb_info structure.  With this\nchange, the hierarchy of on-memory structures of nilfs will be\nsimplified as follows:\n\nBefore:\n  super_block\n       -\u003e nilfs_sb_info\n             -\u003e the_nilfs\n                   -\u003e cptree --+-\u003e nilfs_root (current file system)\n                               +-\u003e nilfs_root (snapshot A)\n                               +-\u003e nilfs_root (snapshot B)\n                               :\n             -\u003e nilfs_sc_info (log writer structure)\nAfter:\n  super_block\n       -\u003e the_nilfs\n             -\u003e cptree --+-\u003e nilfs_root (current file system)\n                         +-\u003e nilfs_root (snapshot A)\n                         +-\u003e nilfs_root (snapshot B)\n                         :\n             -\u003e nilfs_sc_info (log writer structure)\n\nThe reason why we didn\u0027t design so from the beginning is because the\ninitial shape also differed from the above.  The early hierachy was\ncomposed of \"per-mount-point\" super_block -\u003e nilfs_sb_info pairs and a\nshared nilfs object.  On the kernel 2.6.37, it was changed to the\ncurrent shape in order to unify super block instances into one per\ndevice, and this cleanup became applicable as the result.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "f7545144c2e3d280139260df934043e0a6ccce6f",
      "tree": "4e0930f2d4c45a71e300c7ac45c6e55a6d1c6675",
      "parents": [
        "d96bbfa28aa7a1d5a5bf549026a594d7a273c5d7"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Wed Mar 09 11:05:08 2011 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Wed Mar 09 11:05:08 2011 +0900"
      },
      "message": "nilfs2: use sb instance instead of nilfs_sb_info struct\n\nThis replaces sbi uses with direct reference to sb instance.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "be667377a8b8cd73e1b923f33fb5be4034aa4bfa",
      "tree": "8baee2f9155728331eeade85ec93547402f4e606",
      "parents": [
        "ae191838b0251d73b9d0a7254c6938406f5f6320"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sat Mar 05 00:19:32 2011 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Tue Mar 08 14:58:31 2011 +0900"
      },
      "message": "nilfs2: record used amount of each checkpoint in checkpoint list\n\nThis records the number of used blocks per checkpoint in each\ncheckpoint entry of cpfile.  Even though userland tools can get the\nblock count via nilfs_get_cpinfo ioctl, it was not updated by the\nnilfs2 kernel code.  This fixes the issue and makes it available for\nuserland tools to calculate used amount per checkpoint.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\nCc: Jiro SEKIBA \u003cjir@unicus.jp\u003e\n"
    },
    {
      "commit": "828b1c50ae11e6dda68f8dfefe43b74c7182b157",
      "tree": "9c258f65382865edb71e06bf11007071fb058806",
      "parents": [
        "cde98f0f84ccff78e87235cb7b551747d6ad00de"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Thu Feb 03 21:26:17 2011 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Tue Mar 08 14:58:30 2011 +0900"
      },
      "message": "nilfs2: add compat ioctl\n\nThe current FS_IOC_GETFLAGS/SETFLAGS/GETVERSION will fail if\napplication is 32 bit and kernel is 64 bit.\n\nThis issue is avoidable by adding compat_ioctl method.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "b253a3e4f2b8eed69b804952ef926df0ac788595",
      "tree": "fc111c5401f15cd5421fc73372d3f4589716af4f",
      "parents": [
        "32f4aeb31583a85c1e9a5d6d485055c090cebbfb"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Thu Jan 20 02:09:53 2011 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Tue Mar 08 14:58:29 2011 +0900"
      },
      "message": "nilfs2: tighten restrictions on inode flags\n\nNilfs has few rectrictions on which flags may be set on which inodes\nlike ext2/3/4 filesystems used to be.  Specifically DIRSYNC may only\nbe set on directories and IMMUTABLE and APPEND may not be set on\nlinks.  Tighten that to disallow TOPDIR being set on non-directories\nand only NODUMP and NOATIME to be set on non-regular file,\nnon-directories.\n\nThis introduces a flags masking function like those of extN and uses\nit during inode creation.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "365e215ce1f154e288ff0f7c9acbdf5421f57949",
      "tree": "864a8cadeb2c373a0fbbbd90464cf745ac7616f7",
      "parents": [
        "bcbc8c648d6cc88f771435d8031c1a13e00945ed"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Dec 27 00:07:30 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Jan 10 14:38:39 2011 +0900"
      },
      "message": "nilfs2: unfold nilfs_dat_inode function\n\nnilfs_dat_inode function was a wrapper to switch between normal dat\ninode and gcdat, a clone of the dat inode for garbage collection.\n\nThis function got obsolete when the gcdat inode was removed, and now\nwe can access the dat inode directly from a nilfs object.  So, we will\nunfold the wrapper and remove it.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "bcbc8c648d6cc88f771435d8031c1a13e00945ed",
      "tree": "f74a2e7fffb5669823066f8fb875fff535ab8529",
      "parents": [
        "06df0f999247a3153c3ec284c7ada36ef785eb97"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Dec 27 00:05:49 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Jan 10 14:37:54 2011 +0900"
      },
      "message": "nilfs2: do not pass sbi to functions which can get it from inode\n\nThis removes argument for passing nilfs_sb_info structure from\nnilfs_set_file_dirty and nilfs_load_inode_block functions.  We can get\na pointer to the structure from inodes.\n\n[Stephen Rothwell \u003csfr@canb.auug.org.au\u003e: fix conflict with commit\n b74c79e99389cd79b31fcc08f82c24e492e63c7e]\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "622daaff0a8975fb5c5b95f24f3234550ba32e92",
      "tree": "5ae5de9044f962471fa2694654134f5b58f73ace",
      "parents": [
        "27e6c7a3ce29ae5fa5bec4ed5917f8508bfac120"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sun Dec 26 16:38:43 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Jan 10 14:05:46 2011 +0900"
      },
      "message": "nilfs2: fiemap support\n\nThis adds fiemap to nilfs.  Two new functions, nilfs_fiemap and\nnilfs_find_uncommitted_extent are added.\n\nnilfs_fiemap() implements the fiemap inode operation, and\nnilfs_find_uncommitted_extent() helps to get a range of data blocks\nwhose physical location has not been determined.\n\nnilfs_fiemap() collects extent information by looping through\nnilfs_bmap_lookup_contig and nilfs_find_uncommitted_extent routines.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "b74c79e99389cd79b31fcc08f82c24e492e63c7e",
      "tree": "763c6b412517306670bc625e90035f2d16bb739f",
      "parents": [
        "34286d6662308d82aed891852d04c7c3a2649b16"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@kernel.dk",
        "time": "Fri Jan 07 17:49:58 2011 +1100"
      },
      "committer": {
        "name": "Nick Piggin",
        "email": "npiggin@kernel.dk",
        "time": "Fri Jan 07 17:50:29 2011 +1100"
      },
      "message": "fs: provide rcu-walk aware permission i_ops\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n"
    },
    {
      "commit": "2879ed66e4c6da1dfc6bb0bd04566b61824f9256",
      "tree": "f6d5b47abac374fb9ecd516eaea424d990821d83",
      "parents": [
        "090fd5b10165033d7c30afde0a7e59141d820602"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sun Sep 05 13:35:53 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sat Oct 23 09:24:39 2010 +0900"
      },
      "message": "nilfs2: remove own inode allocator and destructor for metadata files\n\nThis finally removes own inode allocator and destructor functions for\nmetadata files.  Several routines, nilfs_mdt_new(),\nnilfs_mdt_new_common(), nilfs_mdt_clear(), nilfs_mdt_destroy(), and\nnilfs_alloc_inode_common() will be gone.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "032dbb3b503a30fce732ec4c05525d0abed1f1d6",
      "tree": "462696abcf0783d50efe97a3ca2641beecc91a3e",
      "parents": [
        "f1e89c86fdd0f5e59f6768146c86437934202033"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Sep 13 11:16:34 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sat Oct 23 09:24:38 2010 +0900"
      },
      "message": "nilfs2: see state of root dentry for mount check of snapshots\n\nAfter applied the patch that unified sb instances, root dentry of\nsnapshots can be left in dcache even after their trees are unmounted.\n\nThe orphan root dentry/inode keeps a root object, and this causes\nfalse positive of nilfs_checkpoint_is_mounted function.\n\nThis resolves the issue by having nilfs_checkpoint_is_mounted test\nwhether the root dentry is busy or not.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "f1e89c86fdd0f5e59f6768146c86437934202033",
      "tree": "c5ba8766a3a029f0c10d6d0d09a57a7e28b7a51b",
      "parents": [
        "c1c1d7092072093ad960db2f6c08f06705c57fa4"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sun Sep 05 12:20:59 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sat Oct 23 09:24:38 2010 +0900"
      },
      "message": "nilfs2: use iget for all metadata files\n\nThis makes use of iget5_locked to allocate or get inode for metadata\nfiles to stop using own inode allocator.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "c1c1d7092072093ad960db2f6c08f06705c57fa4",
      "tree": "115796528882ed5d8d21258ad8cf481765a5035a",
      "parents": [
        "b1f6a4f294088b3fcf9ae67915ca550a1ded2819"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sun Aug 29 12:44:56 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sat Oct 23 09:24:38 2010 +0900"
      },
      "message": "nilfs2: get rid of GCDAT inode\n\nThis applies prepared rollback function and redirect function of\nmetadata file to DAT file, and eliminates GCDAT inode.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "dc3d3b810a644dfa329efaa230cd514226f8981d",
      "tree": "e0a2c2bfb3edb6b1fa4383cb2d1f52adb653c9e2",
      "parents": [
        "fd52202930b7e8db48bee5a6fc6b1f438e822a23"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sun Aug 15 23:33:57 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sat Oct 23 09:24:35 2010 +0900"
      },
      "message": "nilfs2: deny write access to inodes in snapshots\n\nSnapshots of nilfs are read-only.\n\nAfter super block instances (sb) will be unified, nilfs will need to\ncheck write access by a way other than implicit test with\nIS_RDONLY(inode).  This is because IS_RDONLY() refers to MS_RDONLY bit\nof inode-\u003ei_sb-\u003es_flags and it will become inaccurate after the\nunification of sb.\n\nTo prepare for the issue, this uses i_op-\u003epermission to deny write\naccess to inodes in snapshots.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "e912a5b66837ee89fb025e67b5efeaa11930c2ce",
      "tree": "46209cdf7417863024131ff54f56120e43ae7a7b",
      "parents": [
        "8e656fd518784b49453f60c5f78b78703bc85cb2"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sat Aug 14 13:07:15 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sat Oct 23 09:24:35 2010 +0900"
      },
      "message": "nilfs2: use root object to get ifile\n\nThis rewrites functions using ifile so that they get ifile from\nnilfs_root object, and will remove sbi-\u003es_ifile.  Some functions that\ndon\u0027t know the root object are extended to receive it from caller.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "8e656fd518784b49453f60c5f78b78703bc85cb2",
      "tree": "7adf4b71aba4bdf31dc05489a06933c48a0ea6f2",
      "parents": [
        "4d8d9293dce503eb0e083e17a02a328d397e7f00"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Fri Aug 27 00:23:02 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sat Oct 23 09:24:34 2010 +0900"
      },
      "message": "nilfs2: make snapshots in checkpoint tree exportable\n\nThe previous export operations cannot handle multiple versions of\na filesystem if they belong to the same sb instance.\n\nThis adds a new type of file handle and extends export operations so\nthat they can get the inode specified by a checkpoint number as well\nas an inode number and a generation number.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "4d8d9293dce503eb0e083e17a02a328d397e7f00",
      "tree": "ffa2dce7f100b1346131adc01cf93e280b225509",
      "parents": [
        "ba65ae4729bf81c58d9fc847f67d57eec525b042"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Wed Aug 25 17:45:44 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sat Oct 23 09:24:34 2010 +0900"
      },
      "message": "nilfs2: set pointer to root object in inodes\n\nThis puts a pointer to nilfs_root object in the private part of\non-memory inode, and makes nilfs_iget function pick up the inode with\nthe same root object.\n\nNon-root inodes inherit its nilfs_root object from parent inode.  That\nof the root inode is allocated through nilfs_attach_checkpoint()\nfunction.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "263d90cefc7d82a01c296c59532ff59d67c63509",
      "tree": "df289cc3bbb8681b3a42e3c0a25202b085fc9362",
      "parents": [
        "5e19a995f4ad8a8f20749a396bb01ebb6d4df96c"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Fri Aug 20 19:06:11 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sat Oct 23 09:24:34 2010 +0900"
      },
      "message": "nilfs2: remove own inode hash used for GC\n\nThis uses inode hash function that vfs provides instead of the own\nhash table for caching gc inodes.  This finally removes the own inode\nhash from nilfs.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "5f248c9c251c60af3403902b26e08de43964ea0b",
      "tree": "6d3328e72a7e4015a64017eb30be18095c6a3c64",
      "parents": [
        "f6cec0ae58c17522a7bc4e2f39dae19f199ab534",
        "dca332528bc69e05f67161e1ed59929633d5e63d"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Aug 10 11:26:52 2010 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Aug 10 11:26:52 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: (96 commits)\n  no need for list_for_each_entry_safe()/resetting with superblock list\n  Fix sget() race with failing mount\n  vfs: don\u0027t hold s_umount over close_bdev_exclusive() call\n  sysv: do not mark superblock dirty on remount\n  sysv: do not mark superblock dirty on mount\n  btrfs: remove junk sb_dirt change\n  BFS: clean up the superblock usage\n  AFFS: wait for sb synchronization when needed\n  AFFS: clean up dirty flag usage\n  cifs: truncate fallout\n  mbcache: fix shrinker function return value\n  mbcache: Remove unused features\n  add f_flags to struct statfs(64)\n  pass a struct path to vfs_statfs\n  update VFS documentation for method changes.\n  All filesystems that need invalidate_inode_buffers() are doing that explicitly\n  convert remaining -\u003eclear_inode() to -\u003eevict_inode()\n  Make -\u003edrop_inode() just return whether inode needs to be dropped\n  fs/inode.c:clear_inode() is gone\n  fs/inode.c:evict() doesn\u0027t care about delete vs. non-delete paths now\n  ...\n\nFix up trivial conflicts in fs/nilfs2/super.c\n"
    },
    {
      "commit": "6fd1e5c994c392ebdbe45600051b2a32ec4860f1",
      "tree": "672de56405c3a7dd4ffb079304661e4ef14401b7",
      "parents": [
        "4ec70c9b46b032e7f1b41b543c607d6a33b78a1a"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Jun 07 11:55:00 2010 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Aug 09 16:48:25 2010 -0400"
      },
      "message": "convert nilfs2 to -\u003eevict_inode()\n\n[folded build fix from sfr]\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "c5ca48aabe8b11674bf1102abe52d17ecc053f9c",
      "tree": "18c7647b42981d457c59cd4a842ca342a239770d",
      "parents": [
        "1a80a1763fb760b3a84a28df87515f7cdc07a4f4"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Thu Jul 22 03:22:20 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Fri Jul 23 10:02:16 2010 +0900"
      },
      "message": "nilfs2: reject incompatible filesystem\n\nThis forces nilfs to check compatibility of feature flags so as to\nreject a filesystem with unknown features when it mounts or remounts\nthe filesystem.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "05d0e94b66dbdf9d90371b39dc7a6b390ba74d41",
      "tree": "10476599c8102fc58f635d63e4e9a7aa58bf905e",
      "parents": [
        "dc935be2a094087bc561d80f8cf9e66bbc1f7b18"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sat Jul 10 20:52:09 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Fri Jul 23 10:02:14 2010 +0900"
      },
      "message": "nilfs2: get rid of nilfs_bmap_union\n\nThis removes nilfs_bmap_union and finally unifies three structures and\nthe union in bmap/btree code into one.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "b2ac86e1a8e3a3b0ab4449d062c582f07a078e7b",
      "tree": "b681ea820685a278e06995ff23b58f7a85904b70",
      "parents": [
        "d26493b6f017c0b0063a15bf893411ddae85eee4"
      ],
      "author": {
        "name": "Jiro SEKIBA",
        "email": "jir@unicus.jp",
        "time": "Mon Jun 28 17:49:33 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Fri Jul 23 10:02:11 2010 +0900"
      },
      "message": "nilfs2: sync super blocks in turns\n\nThis will sync super blocks in turns instead of syncing duplicate\nsuper blocks at the time.  This will help searching valid super root\nwhen super block is written into disk before log is written, which is\nhappen when barrier-less block devices are unmounted uncleanly.  In\nthe situation, old super block likely points to valid log.\n\nThis patch introduces ns_sbwcount member to the nilfs object and adds\nnilfs_sb_will_flip() function; ns_sbwcount counts how many times super\nblocks write back to the disk.  And, nilfs_sb_will_flip() decides\nwhether flipping required or not based on the count of ns_sbwcount to\nsync super blocks asymmetrically.\n\nThe following functions are also changed:\n\n - nilfs_prepare_super(): flips super blocks according to the\n   argument.  The argument is calculated by nilfs_sb_will_flip()\n   function.\n\n - nilfs_cleanup_super(): sets \"clean\" flag to both super blocks if\n   they point to the same checkpoint.\n\nTo update both of super block information, caller of\nnilfs_commit_super must set the information on both super blocks.\n\nSigned-off-by: Jiro SEKIBA \u003cjir@unicus.jp\u003e\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "d26493b6f017c0b0063a15bf893411ddae85eee4",
      "tree": "994de3e7c0383f0e30e5e9c88c0c5d0261a834bc",
      "parents": [
        "60f46b7efc1d6b980511c2644cb89903062f6e98"
      ],
      "author": {
        "name": "Jiro SEKIBA",
        "email": "jir@unicus.jp",
        "time": "Mon Jun 28 17:49:32 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Fri Jul 23 10:02:10 2010 +0900"
      },
      "message": "nilfs2: introduce nilfs_prepare_super\n\nThis function checks validity of super block pointers.\nIf first super block is invalid, it will swap the super blocks.\nThe function should be called before any super block information updates.\nCaller must obtain nilfs-\u003ens_sem.\n\nSigned-off-by: Jiro SEKIBA \u003cjir@unicus.jp\u003e\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "60f46b7efc1d6b980511c2644cb89903062f6e98",
      "tree": "6a0093650f858279db262c3b39de721bf3b20098",
      "parents": [
        "c8a11c8a1455c380286cfd3d3442e2b60edee49a"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Jun 28 17:49:31 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Fri Jul 23 10:02:10 2010 +0900"
      },
      "message": "nilfs2: separate function that updates log position\n\nThis moves out section that updates information of the recent log\nposition stored in super blocks from nilfs_commit_super to a new\nroutine named nilfs_set_log_cursor.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "7ecaa46cfea453238a369b3019739d50ff5d7c37",
      "tree": "c69911a31c3a2cd4966979de2d34764e08471f2a",
      "parents": [
        "bde4e696e4a527c3cc579ed77e4844d11ca17e12"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Jun 28 17:49:29 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Fri Jul 23 10:02:10 2010 +0900"
      },
      "message": "nilfs2: add nilfs_cleanup_super\n\nThis function write out filesystem state to super blocks in order to\nshare the same cleanup work.  This is a preparation for making super\nblock writeback alternately.\n\nCc: Jiro SEKIBA \u003cjir@unicus.jp\u003e\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "7ea8085910ef3dd4f3cad6845aaa2b580d39b115",
      "tree": "d9c1edb5906f943f7d70bfb4b65106e29772d379",
      "parents": [
        "cc967be54710d97c05229b2e5ba2d00df84ddd64"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Wed May 26 17:53:25 2010 +0200"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Thu May 27 22:05:02 2010 -0400"
      },
      "message": "drop unused dentry argument to -\u003efsync\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "0319003d0d229735770c185ddf132c666e9cd01a",
      "tree": "b6c7e8d10bc09816ae20711fac24fd5b9f63a4ca",
      "parents": [
        "89031bc79782a93fc65adabd0e123c89645bee6e"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sun Jan 31 21:02:09 2010 -0500"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Mar 03 14:07:58 2010 -0500"
      },
      "message": "nilfs really shouldn\u0027t slap struct dentry on stack...\n\n... especially when it only needs (and initializes) .d_name of it\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "828c09509b9695271bcbdc53e9fc9a6a737148d2",
      "tree": "072ffad6f02db7bf4095e07e2b90247cfa042998",
      "parents": [
        "1c4115e595dec42aa0e81ba47ef46e35b34ed428"
      ],
      "author": {
        "name": "Alexey Dobriyan",
        "email": "adobriyan@gmail.com",
        "time": "Thu Oct 01 15:43:56 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Oct 01 16:11:11 2009 -0700"
      },
      "message": "const: constify remaining file_operations\n\n[akpm@linux-foundation.org: fix KVM]\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nAcked-by: Mike Frysinger \u003cvapier@gentoo.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "6e1d5dcc2bbbe71dbf010c747e15739bef6b7218",
      "tree": "2edb0f6cc65acbae95e42df1bc763ec048e6c2e0",
      "parents": [
        "7f09410bbc4306f592cfb43812389ea1c7905a20"
      ],
      "author": {
        "name": "Alexey Dobriyan",
        "email": "adobriyan@gmail.com",
        "time": "Mon Sep 21 17:01:11 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Sep 22 07:17:24 2009 -0700"
      },
      "message": "const: mark remaining inode_operations as const\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@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": "7f09410bbc4306f592cfb43812389ea1c7905a20",
      "tree": "18f179435f70c4ec9231883501062d5ea0357af5",
      "parents": [
        "ac4cfdd6d141c319a7af8655f750ed504c187a74"
      ],
      "author": {
        "name": "Alexey Dobriyan",
        "email": "adobriyan@gmail.com",
        "time": "Mon Sep 21 17:01:10 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Sep 22 07:17:24 2009 -0700"
      },
      "message": "const: mark remaining address_space_operations const\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@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": "d441b1c293149212045de00f346c8ea6cd41cce4",
      "tree": "cbc7aa520feeabaa90ff4b8ff83e6e8fade216c7",
      "parents": [
        "5affd88a104af43f0063a12ad1ee4c7a587945dc"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Jun 08 19:56:34 2009 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Jun 24 08:17:05 2009 -0400"
      },
      "message": "switch nilfs2 to inode-\u003ei_acl\n\nActually, get rid of private analog, since nothing in there is\nusing ACLs at all so far.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "a53b4751ae92adb372017222887f3ec625cba60b",
      "tree": "454c0876bb532ee44ad07485e6d40c60e157ca34",
      "parents": [
        "30c25be71fcbd87fd33518045cc014e69bff3d6f"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Wed May 27 22:11:46 2009 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Wed Jun 10 23:41:12 2009 +0900"
      },
      "message": "nilfs2: use device\u0027s backing_dev_info for btree node caches\n\nPreviously, default_backing_dev_info was used for the mapping of btree\nnode caches.  This uses device dependent backing_dev_info to allow\ndetailed control of the device for the btree node pages.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "4f6b828837b4e3836f2c9ac2f0eab9773b6c1327",
      "tree": "9baa69b0ef44a0c604be831300fd5215c0355be0",
      "parents": [
        "47eb6b9c8fa963c9f49967ad1d9d7ec947d15b68"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sun May 10 22:41:43 2009 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon May 11 14:54:41 2009 +0900"
      },
      "message": "nilfs2: fix lock order reversal in nilfs_clean_segments ioctl\n\nThis is a companion patch to (\"nilfs2: fix possible circular locking\nfor get information ioctls\").\n\nThis corrects lock order reversal between mm-\u003emmap_sem and\nnilfs-\u003ens_segctor_sem in nilfs_clean_segments() which was detected by\nlockdep check:\n\n \u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n [ INFO: possible circular locking dependency detected ]\n 2.6.30-rc3-nilfs-00003-g360bdc1 #7\n -------------------------------------------------------\n mmap/5294 is trying to acquire lock:\n  (\u0026nilfs-\u003ens_segctor_sem){++++.+}, at: [\u003cd0d0e846\u003e] nilfs_transaction_begin+0xb6/0x10c [nilfs2]\n\n but task is already holding lock:\n  (\u0026mm-\u003emmap_sem){++++++}, at: [\u003cc043700a\u003e] do_page_fault+0x1d8/0x30a\n\n which lock already depends on the new lock.\n\n the existing dependency chain (in reverse order) is:\n\n -\u003e #1 (\u0026mm-\u003emmap_sem){++++++}:\n        [\u003cc01470a5\u003e] __lock_acquire+0x1066/0x13b0\n        [\u003cc01474a9\u003e] lock_acquire+0xba/0xdd\n        [\u003cc01836bc\u003e] might_fault+0x68/0x88\n        [\u003cc023c61d\u003e] copy_from_user+0x2a/0x111\n        [\u003cd0d120d0\u003e] nilfs_ioctl_prepare_clean_segments+0x1d/0xf1 [nilfs2]\n        [\u003cd0d0e2aa\u003e] nilfs_clean_segments+0x6d/0x1b9 [nilfs2]\n        [\u003cd0d11f68\u003e] nilfs_ioctl+0x2ad/0x318 [nilfs2]\n        [\u003cc01a3be7\u003e] vfs_ioctl+0x22/0x69\n        [\u003cc01a408e\u003e] do_vfs_ioctl+0x460/0x499\n        [\u003cc01a4107\u003e] sys_ioctl+0x40/0x5a\n        [\u003cc01031a4\u003e] sysenter_do_call+0x12/0x38\n        [\u003cffffffff\u003e] 0xffffffff\n\n -\u003e #0 (\u0026nilfs-\u003ens_segctor_sem){++++.+}:\n        [\u003cc0146e0b\u003e] __lock_acquire+0xdcc/0x13b0\n        [\u003cc01474a9\u003e] lock_acquire+0xba/0xdd\n        [\u003cc0433f1d\u003e] down_read+0x2a/0x3e\n        [\u003cd0d0e846\u003e] nilfs_transaction_begin+0xb6/0x10c [nilfs2]\n        [\u003cd0cfe0e5\u003e] nilfs_page_mkwrite+0xe7/0x154 [nilfs2]\n        [\u003cc0183b0b\u003e] __do_fault+0x165/0x376\n        [\u003cc01855cd\u003e] handle_mm_fault+0x287/0x5d1\n        [\u003cc043712d\u003e] do_page_fault+0x2fb/0x30a\n        [\u003cc0435462\u003e] error_code+0x72/0x78\n        [\u003cffffffff\u003e] 0xffffffff\n\nwhere nilfs_clean_segments() holds:\n\n  nilfs-\u003ens_segctor_sem -\u003e copy_from_user()\n                             --\u003e page fault -\u003e mm-\u003emmap_sem\n\nAnd, page fault path may hold:\n\n  page fault -\u003e mm-\u003emmap_sem\n         --\u003e nilfs_page_mkwrite() -\u003e nilfs-\u003ens_segctor_sem\n\nEven though nilfs_clean_segments() does not perform write access on\ngiven user pages, it may cause deadlock because nilfs-\u003ens_segctor_sem\nis shared per device and mm-\u003emmap_sem can be shared with other tasks.\n\nTo avoid this problem, this patch moves all calls of copy_from_user()\noutside the nilfs-\u003ens_segctor_sem lock in the ioctl.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "e7a7402c0d392dcadc74cae8922f8fae4667605a",
      "tree": "cb0023291a09eb7689fb47a3d8cc1ead46465605",
      "parents": [
        "c2698e50e304cd29a7836f05452359a3306a405e"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Fri Mar 27 10:49:11 2009 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Apr 13 09:53:50 2009 +0900"
      },
      "message": "nilfs2: remove module version\n\nA MODULE_VERSION() macro has been used in out-of-tree nilfs modules,\nbut it\u0027s needless and not updated in tree.  So, this removes it along\nwith the version declaration.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "612392307cb09e49051225092cbbd7049bd8db93",
      "tree": "401a227d0fae219aae7b682bb613bb388b4a7682",
      "parents": [
        "e339ad31f59925b48a92ee3947692fdf9758b8c7"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Apr 06 19:02:00 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 07 08:31:20 2009 -0700"
      },
      "message": "nilfs2: support nanosecond timestamp\n\nAfter a review of user\u0027s feedback for finding out other compatibility\nissues, I found nilfs improperly initializes timestamps in inode;\nCURRENT_TIME was used there instead of CURRENT_TIME_SEC even though nilfs\ndidn\u0027t have nanosecond timestamps on disk.  A few users gave us the report\nthat the tar program sometimes failed to expand symbolic links on nilfs,\nand it turned out to be the cause.\n\nInstead of applying the above displacement, I\u0027ve decided to support\nnanosecond timestamps on this occation.  Fortunetaly, a needless 64-bit\nfield was in the nilfs_inode struct, and I found it\u0027s available for this\npurpose without impact for the users.\n\nSo, this will do the enhancement and resolve the tar problem.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.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": "e339ad31f59925b48a92ee3947692fdf9758b8c7",
      "tree": "6bb85c43bfd100b0a220c788c654f2f74ca553e4",
      "parents": [
        "cece552074c591970353ad48308d65f110aeaf28"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Apr 06 19:01:59 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 07 08:31:20 2009 -0700"
      },
      "message": "nilfs2: introduce secondary super block\n\nThe former versions didn\u0027t have extra super blocks.  This improves the\nweak point by introducing another super block at unused region in tail of\nthe partition.\n\nThis doesn\u0027t break disk format compatibility; older versions just ingore\nthe secondary super block, and new versions just recover it if it doesn\u0027t\nexist.  The partition created by an old mkfs may not have unused region,\nbut in that case, the secondary super block will not be added.\n\nThis doesn\u0027t make more redundant copies of the super block; it is a future\nwork.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.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": "1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b",
      "tree": "f80e97297d5badebd31bbb17003d76a4ea30453a",
      "parents": [
        "2c2e52fc4fca251e68f90821c9ff5cb18be4df58"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Apr 06 19:01:55 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 07 08:31:19 2009 -0700"
      },
      "message": "nilfs2: replace BUG_ON and BUG calls triggerable from ioctl\n\nPekka Enberg advised me:\n\u003e It would be nice if BUG(), BUG_ON(), and panic() calls would be\n\u003e converted to proper error handling using WARN_ON() calls. The BUG()\n\u003e call in nilfs_cpfile_delete_checkpoints(), for example, looks to be\n\u003e triggerable from user-space via the ioctl() system call.\n\nThis will follow the comment and keep them to a minimum.\n\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.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": "7a9461939a46345860622ea36ff267ee4446f00f",
      "tree": "5607ba81b9580e2979bcfb806d5b04f5fbfd53d9",
      "parents": [
        "8082d36aed26c4fb6ed43e4008303682eabf839e"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Apr 06 19:01:53 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 07 08:31:19 2009 -0700"
      },
      "message": "nilfs2: use unlocked_ioctl\n\nPekka Enberg suggested converting -\u003eioctl operations to use\n-\u003eunlocked_ioctl to avoid BKL.\n\nThe conversion was verified to be safe, so I will take it on this\noccasion.\n\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.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": "8082d36aed26c4fb6ed43e4008303682eabf839e",
      "tree": "d51eff46a3ebe29e0a445597570599b5b7c4a037",
      "parents": [
        "dc498d09be28172846cacded35ca2378222a8c7b"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Apr 06 19:01:53 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 07 08:31:18 2009 -0700"
      },
      "message": "nilfs2: remove compat ioctl code\n\nThis removes compat code from the nilfs ioctls and applies the same\nfunction for both .ioctl and .compat_ioctl file operations.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.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": "47420c799830d4676e544dbec56b2a7f787528f5",
      "tree": "dd61f6c96942b07f762129c893d9cbbbeff60735",
      "parents": [
        "a2e7d2df82cafb76f76809ddf6e2caa8afe4f75e"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Apr 06 19:01:45 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 07 08:31:17 2009 -0700"
      },
      "message": "nilfs2: avoid double error caused by nilfs_transaction_end\n\nPekka Enberg pointed out that double error handlings found after\nnilfs_transaction_end() can be avoided by separating abort operation:\n\n OK, I don\u0027t understand this. The only way nilfs_transaction_end() can\n fail is if we have NILFS_TI_SYNC set and we fail to construct the\n segment. But why do we want to construct a segment if we don\u0027t commit?\n\n I guess what I\u0027m asking is why don\u0027t we have a separate\n nilfs_transaction_abort() function that can\u0027t fail for the erroneous\n case to avoid this double error value tracking thing?\n\nThis does the separation and renames nilfs_transaction_end() to\nnilfs_transaction_commit() for clarification.\n\nSince, some calls of these functions were used just for exclusion control\nagainst the segment constructor, they are replaced with semaphore\noperations.\n\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.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": "65b4643d3babeb203fa9571d12fd5e1bf74d27b0",
      "tree": "b9371b765ca1f52c8c7ba046f7cffea92e2bc722",
      "parents": [
        "eed10e39b142eb4d284c8e4c751c0eaaa0bcd707"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Apr 06 19:01:23 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 07 08:31:12 2009 -0700"
      },
      "message": "nilfs2: add inode and other major structures\n\nThis adds the following common structures of the NILFS2 file system.\n\n* nilfs_inode_info structure:\n  gives on-memory inode.\n\n* nilfs_sb_info structure:\n  keeps per-mount state and a special inode for the ifile.\n  This structure is attached to the super_block structure.\n\n* the_nilfs structure:\n  keeps shared state and locks among a read/write mount and snapshot\n  mounts.  This keeps special inodes for the sufile, cpfile, dat, and\n  another dat inode used during GC (gcdat).  This also has a hash table\n  of dummy inodes to cache disk blocks during GC (gcinodes).\n\n* nilfs_transaction_info structure:\n  keeps per task state while nilfs is writing logs or doing indivisible\n  inode or namespace operations.  This structure is used to identify\n  context during log making and store nest level of the lock which\n  ensures atomicity of file system operations.\n\nSigned-off-by: Koji Sato \u003csato.koji@lab.ntt.co.jp\u003e\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    }
  ]
}
