)]}'
{
  "log": [
    {
      "commit": "83982b6f47201c4c7767210d24d7d8c99567a0b3",
      "tree": "f1c19b1c6b5a34dd0c5de7519b78414b7a9267ee",
      "parents": [
        "4d783b093cd4f3e2738527365979cbd1c5101065"
      ],
      "author": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Tue Jan 06 14:53:16 2009 -0500"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Tue Jan 06 14:53:16 2009 -0500"
      },
      "message": "ext4: Remove \"extents\" mount option\n\nThis mount option is largely superfluous, and in fact the way it was\nimplemented was buggy; if a filesystem which did not have the extents\nfeature flag was mounted -o extents, the filesystem would attempt to\ncreate and use extents-based file even though the extents feature flag\nwas not eabled.  The simplest thing to do is to nuke the mount option\nentirely.  It\u0027s not all that useful to force the non-creation of new\nextent-based files if the filesystem can support it.\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n"
    },
    {
      "commit": "0390131ba84fd3f726f9e24fc4553828125700bb",
      "tree": "4c90afad4e8690e25aec0ce069fd450e92ab5f96",
      "parents": [
        "ff7ef329b268b603ea4a2303241ef1c3829fd574"
      ],
      "author": {
        "name": "Frank Mayhar",
        "email": "fmayhar@google.com",
        "time": "Wed Jan 07 00:06:22 2009 -0500"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Wed Jan 07 00:06:22 2009 -0500"
      },
      "message": "ext4: Allow ext4 to run without a journal\n\nA few weeks ago I posted a patch for discussion that allowed ext4 to run\nwithout a journal.  Since that time I\u0027ve integrated the excellent\ncomments from Andreas and fixed several serious bugs.  We\u0027re currently\nrunning with this patch and generating some performance numbers against\nboth ext2 (with backported reservations code) and ext4 with and without\na journal.  It just so happens that running without a journal is\nslightly faster for most everything.\n\nWe did\n\tiozone -T -t 4 s 2g -r 256k -T -I -i0 -i1 -i2\n\nwhich creates 4 threads, each of which create and do reads and writes on\na 2G file, with a buffer size of 256K, using O_DIRECT for all file opens\nto bypass the page cache.  Results:\n\n                     ext2        ext4, default   ext4, no journal\n  initial writes   13.0 MB/s        15.4 MB/s          15.7 MB/s\n  rewrites         13.1 MB/s        15.6 MB/s          15.9 MB/s\n  reads            15.2 MB/s        16.9 MB/s          17.2 MB/s\n  re-reads         15.3 MB/s        16.9 MB/s          17.2 MB/s\n  random readers    5.6 MB/s         5.6 MB/s           5.7 MB/s\n  random writers    5.1 MB/s         5.3 MB/s           5.4 MB/s \n\nSo it seems that, so far, this was a useful exercise.\n\nSigned-off-by: Frank Mayhar \u003cfmayhar@google.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n"
    },
    {
      "commit": "2a43a878001cc5cb7c3c7be2e8dad0a1aeb939b0",
      "tree": "a0653e45baefbbe3d4de74087525d1b86292a101",
      "parents": [
        "7ee1ec4ca30c6df8e989615cdaacb75f2af4fa6b"
      ],
      "author": {
        "name": "Aneesh Kumar K.V",
        "email": "aneesh.kumar@linux.vnet.ibm.com",
        "time": "Sat Sep 13 12:52:26 2008 -0400"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Sat Sep 13 12:52:26 2008 -0400"
      },
      "message": "ext4: elevate write count for migrate ioctl\n\nThe migrate ioctl writes to the filsystem, so we need to elevate the\nwrite count.\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\n"
    },
    {
      "commit": "ee12b630687d510f6f4b6d4acdc4e267fd4adeda",
      "tree": "8dd253073c5e811751bf1bb479fb03f772e42406",
      "parents": [
        "a02908f19c819aeec5e3dcf238adaa6deddd70b0"
      ],
      "author": {
        "name": "Mingming Cao",
        "email": "cmm@us.ibm.com",
        "time": "Tue Aug 19 22:16:05 2008 -0400"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Tue Aug 19 22:16:05 2008 -0400"
      },
      "message": "ext4: journal credits reservation fixes for extent file writepage\n\nThis patch modified the writepage/write_begin credit calculation for\nextent files, to use the credits caculation helper function.\n\nThe current calculation of how many index/leaf blocks should be\naccounted is too conservetive, it always considered the worse case,\nwhere the tree level is 5, and in the case of multiple chunk\nallocations, it always assumed no blocks were dirtied in common across\nthe allocations. This path uses the accurate depth of the inode with\nsome extras to calculate the index blocks, and also less conservative in\nthe case of multiple allocation accounting.\n\nSigned-off-by: Mingming Cao \u003ccmm@us.ibm.com\u003e\nReviewed-by: Aneesh Kumar K.V \u003caneesh.kumar@linux.vnet.ibm.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n"
    },
    {
      "commit": "3dcf54515aa4981a647ad74859199032965193a5",
      "tree": "b95d895bb2f6fa15be29411b15d538c21b0de930",
      "parents": [
        "216553c4b7f3e3e2beb4981cddca9b2027523928"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Tue Apr 29 18:13:32 2008 -0400"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Tue Apr 29 18:13:32 2008 -0400"
      },
      "message": "ext4: move headers out of include/linux\n\nMove ext4 headers out of include/linux.  This is just the trivial move,\nthere\u0027s some more thing that could be done later. \n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Mingming Cao \u003ccmm@us.ibm.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n\n"
    },
    {
      "commit": "267e4db9ac28a09973476e7ec2cb6807e609d35a",
      "tree": "54eae44c7c0086800901866424ef1526e0ce863e",
      "parents": [
        "3977c965ec35ce1a7eac988ad313f0fc9aee9660"
      ],
      "author": {
        "name": "Aneesh Kumar K.V",
        "email": "aneesh.kumar@linux.vnet.ibm.com",
        "time": "Tue Apr 29 08:11:12 2008 -0400"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Tue Apr 29 08:11:12 2008 -0400"
      },
      "message": "ext4: Fix race between migration and mmap write\n\nFail migrate if we allocated new blocks via mmap write.\n\nIf we write to holes in the file via mmap, we end up allocating\nnew blocks. This block allocation happens without taking inode-\u003ei_mutex.\nSince migrate is protected by i_mutex and migrate expects that no\nnew blocks get allocated during migrate, fail migrate if new blocks\nget allocated.\n\nWe can\u0027t take inode-\u003ei_mutex in the mmap write path because that\nwould result in a locking order violation between i_mutex and mmap_sem.\nAlso adding a separate rw_sempahore for protection is really high overhead\nfor a rare operation such as migrate.\n\nSigned-off-by: Aneesh Kumar K.V \u003caneesh.kumar@linux.vnet.ibm.com\u003e\nAcked-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n"
    },
    {
      "commit": "b35905c16ad6428551eb9e49525011bd2700cf56",
      "tree": "155ae1b76392b38a6079dcc5de15b123b3c20953",
      "parents": [
        "4cdeed861b5f797b3fa661eb331a6bd6ad669c6a"
      ],
      "author": {
        "name": "Aneesh Kumar K.V",
        "email": "aneesh.kumar@linux.vnet.ibm.com",
        "time": "Mon Feb 25 16:54:37 2008 -0500"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Mon Feb 25 16:54:37 2008 -0500"
      },
      "message": "ext4: Fix memory and buffer head leak in callers to ext4_ext_find_extent()\n\nThe path variable returned via ext4_ext_find_extent is a kmalloc\nvariable and needs to be freeded.  It also contains a reference to\nbuffer_head which needs to be dropped.\n\nSigned-off-by: Aneesh Kumar K.V \u003caneesh.kumar@linux.vnet.ibm.com\u003e\nSigned-off-by: Mingming Cao \u003ccmm@us.ibm.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n\n"
    },
    {
      "commit": "8009f9fb3067fef6c2ca0c16f6bac786ae28639d",
      "tree": "acf8bbfd2833a63baa9d2194ed30bf7e7dcb3075",
      "parents": [
        "0040d9875dcccfcb2131417b10fbd9841bc5f05b"
      ],
      "author": {
        "name": "Aneesh Kumar K.V",
        "email": "aneesh.kumar@linux.vnet.ibm.com",
        "time": "Sun Feb 10 01:20:05 2008 -0500"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Sun Feb 10 01:20:05 2008 -0500"
      },
      "message": "ext4: Fix circular locking dependency with migrate and rm.\n\nIn order to prevent a circular locking dependency when an unlink\noperation is racing with an ext4 migration, we delay taking i_data_sem\nuntil just before switch the inode format, and use i_mutex to prevent\nwrites and truncates during the first part of the migration operation.\n\nAcked-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Aneesh Kumar K.V \u003caneesh.kumar@linux.vnet.ibm.com\u003e\nSigned-off-by: Mingming Cao \u003ccmm@us.ibm.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n\n"
    },
    {
      "commit": "b8356c465b42c162f34b5fd4102a6c27cec36f43",
      "tree": "806034b9694b04341888f7bfcaf118fe73e75b71",
      "parents": [
        "4d605179723a3fb8ba594d9516897426e6629a5b"
      ],
      "author": {
        "name": "Valerie Clement",
        "email": "valerie.clement@bull.net",
        "time": "Tue Feb 05 10:56:37 2008 -0500"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Tue Feb 05 10:56:37 2008 -0500"
      },
      "message": "ext4: Don\u0027t set EXTENTS_FL flag for fast symlinks\n\nFor fast symbolic links, the file content is stored in the i_block[]\narray, which is not compatible with the new file extents format.\ne2fsck reports error on such files because EXTENTS_FL is set.\nDon\u0027t set the EXTENTS_FL flag when creating fast symlinks.\n\nIn the case of file migration, skip fast symbolic links.\n\nSigned-off-by: Valerie Clement \u003cvalerie.clement@bull.net\u003e\nSigned-off-by: Mingming Cao \u003ccmm@us.ibm.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n\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": "c14c6fd5c56a0d0495d8a7c0f2bc330be658663e",
      "tree": "6ca056c1cff1103739170d7a19c66a9966c59eb2",
      "parents": [
        "25ec56b518257a56d2ff41a941d288e4b5ff9488"
      ],
      "author": {
        "name": "Aneesh Kumar K.V",
        "email": "aneesh.kumar@linux.vnet.ibm.com",
        "time": "Mon Jan 28 23:58:26 2008 -0500"
      },
      "committer": {
        "name": "Theodore Ts\u0027o",
        "email": "tytso@mit.edu",
        "time": "Mon Jan 28 23:58:26 2008 -0500"
      },
      "message": "ext4: Add EXT4_IOC_MIGRATE ioctl\n\nThe below patch add ioctl for migrating ext3 indirect block mapped inode\nto ext4 extent mapped inode.\n\nSigned-off-by: Aneesh Kumar K.V \u003caneesh.kumar@linux.vnet.ibm.com\u003e\n"
    }
  ]
}