)]}'
{
  "commit": "fd98496f467b3d26d05ab1498f41718b5ef13de5",
  "tree": "27e29934f5c2ee5ccc060de27dee261d31d6842c",
  "parents": [
    "0390131ba84fd3f726f9e24fc4553828125700bb"
  ],
  "author": {
    "name": "Theodore Ts\u0027o",
    "email": "tytso@mit.edu",
    "time": "Mon Jan 05 21:34:13 2009 -0500"
  },
  "committer": {
    "name": "Theodore Ts\u0027o",
    "email": "tytso@mit.edu",
    "time": "Mon Jan 05 21:34:13 2009 -0500"
  },
  "message": "jbd2: Add barrier not supported test to journal_wait_on_commit_record\n\nXen doesn\u0027t report that barriers are not supported until buffer I/O is\nreported as completed, instead of when the buffer I/O is submitted.\nAdd a check and a fallback codepath to journal_wait_on_commit_record()\nto detect this case, so that attempts to mount ext4 filesystems on\nLVM/devicemapper devices on Xen guests don\u0027t blow up with an \"Aborting\njournal on device XXX\"; \"Remounting filesystem read-only\" error.\n\nThanks to Andreas Sundstrom for reporting this issue.\n\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\nCc: stable@kernel.org\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "ebc667bc54a8e1ac3c28e8ab6a40ce83f5274ad9",
      "old_mode": 33188,
      "old_path": "fs/jbd2/commit.c",
      "new_id": "6393fd0d804e1e16764f2a70e2a47ba1e9ffce27",
      "new_mode": 33188,
      "new_path": "fs/jbd2/commit.c"
    }
  ]
}