)]}'
{
  "log": [
    {
      "commit": "5bf5683a33f3584da6eced480967c4f7e11515a8",
      "tree": "4986ba3932d9f259fa1bc674deff3e35f689b243",
      "parents": [
        "7ad7445f60fe4d46c4c9d2a9463db180d2a3b270"
      ],
      "author": {
        "name": "Hidehiro Kawai",
        "email": "hidehiro.kawai.ez@hitachi.com",
        "time": "Fri Oct 10 22:12:43 2008 -0400"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Fri Oct 10 22:12:43 2008 -0400"
      },
      "message": "ext4: add an option to control error handling on file data\n\nIf the journal doesn\u0027t abort when it gets an IO error in file data\nblocks, the file data corruption will spread silently.  Because\nmost of applications and commands do buffered writes without fsync(),\nthey don\u0027t notice the IO error.  It\u0027s scary for mission critical\nsystems.  On the other hand, if the journal aborts whenever it gets\nan IO error in file data blocks, the system will easily become\ninoperable.  So this patch introduces a filesystem option to\ndetermine whether it aborts the journal or just call printk() when\nit gets an IO error in file data.\n\nIf you mount an ext4 fs with data_err\u003dabort option, it aborts on file\ndata write error.  If you mount it with data_err\u003dignore, it doesn\u0027t\nabort, just call printk().  data_err\u003dignore is the default.\n\nHere is the corresponding patch of the ext3 version:\nhttp://kerneltrap.org/mailarchive/linux-kernel/2008/9/9/3239374\n\nSigned-off-by: Hidehiro Kawai \u003chidehiro.kawai.ez@hitachi.com\u003e\nSigned-off-by: Theodore Ts\u0027o \u003ctytso@mit.edu\u003e\n\n"
    },
    {
      "commit": "03010a3350301baac2154fa66de925ae2981b7e3",
      "tree": "b1af2cecbb540faab4bd67dc1a28ad3384341d72",
      "parents": [
        "39d80c33a068d9fa63a36c3b2c0d718d38440dd1"
      ],
      "author": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Fri Oct 10 20:02:48 2008 -0400"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Fri Oct 10 20:02:48 2008 -0400"
      },
      "message": "ext4: Rename ext4dev to ext4\n\nThe ext4 filesystem is getting stable enough that it\u0027s time to drop\nthe \"dev\" prefix.  Also remove the requirement for the TEST_FILESYS\nflag.\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n"
    },
    {
      "commit": "240799cdf22bd789ea6852653c3b879d35ad0a6c",
      "tree": "e696b60cc103f23838b5c14d8d397f692abffbc3",
      "parents": [
        "37515facd001942221d68171c81c1f46d54ffdd0"
      ],
      "author": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Thu Oct 09 23:53:47 2008 -0400"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Thu Oct 09 23:53:47 2008 -0400"
      },
      "message": "ext4: Use readahead when reading an inode from the inode table\n\nWith modern hard drives, reading 64k takes roughly the same time as\nreading a 4k block.  So request readahead for adjacent inode table\nblocks to reduce the time it takes when iterating over directories\n(especially when doing this in htree sort order) in a cold cache case.\nWith this patch, the time it takes to run \"git status\" on a kernel\ntree after flushing the caches via \"echo 3 \u003e /proc/sys/vm/drop_caches\"\nis reduced by 21%.\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n"
    },
    {
      "commit": "4537398d91e6e03811ba971d959b762137058c1a",
      "tree": "650408a7954dd8147ab2f4ab3f1170ab401f9a61",
      "parents": [
        "5e745b041f2ccad63077118b40468521306f3962"
      ],
      "author": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Sun Jul 27 19:59:21 2008 -0400"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Sun Jul 27 19:59:21 2008 -0400"
      },
      "message": "ext4: Update documentation to remind users to update mke2fs.conf\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n\n"
    },
    {
      "commit": "49f1487b2e41bd8439ea39a4f15b4064e823cc54",
      "tree": "03f6b923b8d1a2134b7049b199cce0244ce66fcf",
      "parents": [
        "e4079a11f5ed966b7d972cc69e8d337a0f095e32"
      ],
      "author": {
        "name": "Mingming Cao",
        "email": "cmm@us.ibm.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": "ext4: Documention update for new ordered mode and delayed allocation\n\nAdding some documentations for delayed allocation and new ordered mode.\n\nSigned-off-by: Mingming Cao \u003ccmm@us.ibm.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n"
    },
    {
      "commit": "93e3270c87549dc531a0b0e5d06362d998d810cb",
      "tree": "2eed9efa6734780d3adbe85dd12c4a470d93072a",
      "parents": [
        "5f21b0e642d7bf6fe4434c9ba12bc9cb96b17cf7"
      ],
      "author": {
        "name": "Jose R. Santos",
        "email": "jrs@us.ibm.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": "ext4: Documentation updates.\n\nSome of the information in Documentation/filesystems/ext4.txt is out\nof date and in need of an update.\n\nSigned-off-by: Jose R. Santos \u003cjrs@us.ibm.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n"
    },
    {
      "commit": "571640cad3fda6475da45d91cf86076f1f86bd9b",
      "tree": "a97ff3da9b60251c68358cd000c217cb37915ea2",
      "parents": [
        "034772b068be62a79470d6c1b81b01fbe27793ac"
      ],
      "author": {
        "name": "Eric Sandeen",
        "email": "sandeen@redhat.com",
        "time": "Mon May 26 12:29:46 2008 -0400"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Mon May 26 12:29:46 2008 -0400"
      },
      "message": "ext4: enable barriers by default\n\nI can\u0027t think of any valid reason for ext4 to not use barriers when\nthey are available;  I believe this is necessary for filesystem\nintegrity in the face of a volatile write cache on storage.\n\nAn administrator who trusts that the cache is sufficiently battery-\nbacked (and power supplies are sufficiently redundant, etc...)\ncan always turn it back off again.\n\nSuSE has carried such a patch for ext3 for quite some time now.\n\nAlso document the mount option while we\u0027re at it.\n\nSigned-off-by: Eric Sandeen \u003csandeen@redhat.com\u003e\nSigned-off-by: Mingming Cao \u003ccmm@us.ibm.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n"
    },
    {
      "commit": "c9de560ded61faa5b754137b7753da252391c55a",
      "tree": "2c4311377c4aa72450e27f531e198fe3e1c67db0",
      "parents": [
        "1988b51e476bd097d910c9245b53f2e38aedaf0d"
      ],
      "author": {
        "name": "Alex Tomas",
        "email": "alex@clusterfs.com",
        "time": "Tue Jan 29 00:19:52 2008 -0500"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Tue Jan 29 00:19:52 2008 -0500"
      },
      "message": "ext4: Add multi block allocator for ext4\n\nSigned-off-by: Alex Tomas \u003calex@clusterfs.com\u003e\nSigned-off-by: Andreas Dilger \u003cadilger@clusterfs.com\u003e\nSigned-off-by: Aneesh Kumar K.V \u003caneesh.kumar@linux.vnet.ibm.com\u003e\nSigned-off-by: Eric Sandeen \u003csandeen@redhat.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n"
    },
    {
      "commit": "818d276ceb83aa9fdebb5e0a53188290312de987",
      "tree": "de3fb4ffadd72caea2876c5232ce76cd14b3646e",
      "parents": [
        "8e85fb3f305b24b79c6d9cb7a56d22b062335ad3"
      ],
      "author": {
        "name": "Girish Shilamkar",
        "email": "girish@clusterfs.com",
        "time": "Mon Jan 28 23:58:27 2008 -0500"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Mon Jan 28 23:58:27 2008 -0500"
      },
      "message": "ext4: Add the journal checksum feature\n\nThe journal checksum feature adds two new flags i.e\nJBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and JBD2_FEATURE_COMPAT_CHECKSUM.\n\nJBD2_FEATURE_CHECKSUM flag indicates that the commit block contains the\nchecksum for the blocks described by the descriptor blocks.\nDue to checksums, writing of the commit record no longer needs to be\nsynchronous. Now commit record can be sent to disk without waiting for\ndescriptor blocks to be written to disk. This behavior is controlled\nusing JBD2_FEATURE_ASYNC_COMMIT flag. Older kernels/e2fsck should not be\nable to recover the journal with _ASYNC_COMMIT hence it is made\nincompat.\nThe commit header has been extended to hold the checksum along with the\ntype of the checksum.\n\nFor recovery in pass scan checksums are verified to ensure the sanity\nand completeness(in case of _ASYNC_COMMIT) of every transaction.\n\nSigned-off-by: Andreas Dilger \u003cadilger@clusterfs.com\u003e\nSigned-off-by: Girish Shilamkar \u003cgirish@clusterfs.com\u003e\nSigned-off-by: Dave Kleikamp \u003cshaggy@linux.vnet.ibm.com\u003e\nSigned-off-by: Mingming Cao \u003ccmm@us.ibm.com\u003e\n"
    },
    {
      "commit": "fc513a333b45f8913d40c8241a0cb61be79e1c60",
      "tree": "1abd23dd907da0ca29ff0511aeda238efbaa8662",
      "parents": [
        "63f5793351d821749979e36889f9c089c6028c83"
      ],
      "author": {
        "name": "Dave Kleikamp",
        "email": "shaggy@austin.ibm.com",
        "time": "Wed Oct 11 01:21:25 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Oct 11 11:14:19 2006 -0700"
      },
      "message": "[PATCH] Documentation/filesystems/ext4.txt\n\nThis file, ext4.txt, was put together with information from Andrew Morton,\nAndreas Dilger, Suparna Bhattacharya, and Ted Ts\u0027o.\n\nI copied the mount options, with the exception of \"extents\", from ext3.txt,\nso if anyone is aware of anything out-of-date, please let me know.\n\nSigned-off-by: Dave Kleikamp \u003cshaggy@austin.ibm.com\u003e\nCc: Theodore Ts\u0027o \u003ctytso@mit.edu\u003e\nCc: Suparna Bhattacharya \u003csuparna@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    }
  ]
}