)]}'
{
  "commit": "ffbd517d5a8c8e93ddd11046434fb029f3df73aa",
  "tree": "9ec7b7f2efbb8950ca2654235a899398e82a68b5",
  "parents": [
    "0882e8dd3aad33eca41696d463bb896e6c8817eb"
  ],
  "author": {
    "name": "Chris Mason",
    "email": "chris.mason@oracle.com",
    "time": "Mon Apr 20 15:50:09 2009 -0400"
  },
  "committer": {
    "name": "Chris Mason",
    "email": "chris.mason@oracle.com",
    "time": "Mon Apr 20 15:53:08 2009 -0400"
  },
  "message": "Btrfs: use WRITE_SYNC for synchronous writes\n\nPart of reducing fsync/O_SYNC/O_DIRECT latencies is using WRITE_SYNC for\nwrites we plan on waiting on in the near future.  This patch\nmirrors recent changes in other filesystems and the generic code to\nuse WRITE_SYNC when WB_SYNC_ALL is passed and to use WRITE_SYNC for\nother latency critical writes.\n\nBtrfs uses async worker threads for checksumming before the write is done,\nand then again to actually submit the bios.  The bio submission code just\nruns a per-device list of bios that need to be sent down the pipe.\n\nThis list is split into low priority and high priority lists so the\nWRITE_SYNC IO happens first.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n",
  "tree_diff": [
    {
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      "new_path": "fs/btrfs/disk-io.c"
    },
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      "new_path": "fs/btrfs/extent_io.c"
    },
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    },
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      "old_path": "fs/btrfs/volumes.c",
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      "new_path": "fs/btrfs/volumes.c"
    },
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}