)]}'
{
  "log": [
    {
      "commit": "d397712bcc6a759a560fd247e6053ecae091f958",
      "tree": "9da8daebb870d8b8b1843507c4621715e23dd31a",
      "parents": [
        "1f3c79a28c8837e8572b98f6d14142d9a6133c56"
      ],
      "author": {
        "name": "Chris Mason",
        "email": "chris.mason@oracle.com",
        "time": "Mon Jan 05 21:25:51 2009 -0500"
      },
      "committer": {
        "name": "Chris Mason",
        "email": "chris.mason@oracle.com",
        "time": "Mon Jan 05 21:25:51 2009 -0500"
      },
      "message": "Btrfs: Fix checkpatch.pl warnings\n\nThere were many, most are fixed now.  struct-funcs.c generates some warnings\nbut these are bogus.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n"
    },
    {
      "commit": "d352ac68148b69937d39ca5d48bcc4478e118dbf",
      "tree": "7951dd7311999d9e77766acdc7f8e93de97874d8",
      "parents": [
        "9a5e1ea1e1e539e244a54afffc330fc368376ab9"
      ],
      "author": {
        "name": "Chris Mason",
        "email": "chris.mason@oracle.com",
        "time": "Mon Sep 29 15:18:18 2008 -0400"
      },
      "committer": {
        "name": "Chris Mason",
        "email": "chris.mason@oracle.com",
        "time": "Mon Sep 29 15:18:18 2008 -0400"
      },
      "message": "Btrfs: add and improve comments\n\nThis improves the comments at the top of many functions.  It didn\u0027t\ndive into the guts of functions because I was trying to\navoid merging problems with the new allocator and back reference work.\n\nextent-tree.c and volumes.c were both skipped, and there is definitely\nmore work todo in cleaning and commenting the code.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n"
    },
    {
      "commit": "9a5e1ea1e1e539e244a54afffc330fc368376ab9",
      "tree": "87b48444ba411ff6d87a87190faf5a3d912765d1",
      "parents": [
        "8c8bee1d7ca47fc75b6bd24a8085c525a2394c02"
      ],
      "author": {
        "name": "Chris Mason",
        "email": "chris.mason@oracle.com",
        "time": "Mon Sep 29 11:24:41 2008 -0400"
      },
      "committer": {
        "name": "Chris Mason",
        "email": "chris.mason@oracle.com",
        "time": "Mon Sep 29 11:24:41 2008 -0400"
      },
      "message": "Btrfs: drop WARN_ON from btrfs_add_leaf_ref\n\nbtrfs_add_leaf_ref was doing checks on the objects it found in the\nrbtree to make sure they were properly linked into the tree.  But, the field\nit was checking can be safely changed outside of the tree spin lock.\n\nThe WARN_ON was for debugging the initial implementation and can be\nsafely removed.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n\n"
    },
    {
      "commit": "e465768938f95388723b0fd3c50a0ae48173edb9",
      "tree": "0f624a9a98dedfafae902e12b384d27e1100cd3a",
      "parents": [
        "e8569813849b5da394a195c7e76b4faa452b12d1"
      ],
      "author": {
        "name": "Zheng Yan",
        "email": "zheng.yan@oracle.com",
        "time": "Fri Sep 26 10:04:53 2008 -0400"
      },
      "committer": {
        "name": "Chris Mason",
        "email": "chris.mason@oracle.com",
        "time": "Fri Sep 26 10:04:53 2008 -0400"
      },
      "message": "Btrfs: Add shared reference cache\n\nBtrfs has a cache of reference counts in leaves, allowing it to\navoid reading tree leaves while deleting snapshots.  To reduce\ncontention with multiple subvolumes, this cache is private to each\nsubvolume.\n\nThis patch adds shared reference cache support. The new space\nbalancing code plays with multiple subvols at the same time, So\nthe old per-subvol reference cache is not well suited.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n"
    },
    {
      "commit": "bcc63abbf3e9bf948a1b0129b3e6120ec7d7f698",
      "tree": "1c66dc210f948f79c86786368d2c75b57482875d",
      "parents": [
        "33958dc6d38fb4ca7e62273855fcb2db7e616263"
      ],
      "author": {
        "name": "Yan",
        "email": "zheng.yan@oracle.com",
        "time": "Wed Jul 30 16:29:20 2008 -0400"
      },
      "committer": {
        "name": "Chris Mason",
        "email": "chris.mason@oracle.com",
        "time": "Thu Sep 25 11:04:05 2008 -0400"
      },
      "message": "Btrfs: implement memory reclaim for leaf reference cache\n\nThe memory reclaiming issue happens when snapshot exists. In that\ncase, some cache entries may not be used during old snapshot dropping,\nso they will remain in the cache until umount.\n\nThe patch adds a field to struct btrfs_leaf_ref to record create time. Besides,\nthe patch makes all dead roots of a given snapshot linked together in order of\ncreate time. After a old snapshot was completely dropped, we check the dead\nroot list and remove all cache entries created before the oldest dead root in\nthe list.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n"
    },
    {
      "commit": "017e5369eb353559d68a11d4a718faa634533821",
      "tree": "c339f2f4a59e403c7f9bfa8d137663c6bf260537",
      "parents": [
        "31153d81284934601d08110ac7698fd9a535e4c0"
      ],
      "author": {
        "name": "Chris Mason",
        "email": "chris.mason@oracle.com",
        "time": "Mon Jul 28 15:32:51 2008 -0400"
      },
      "committer": {
        "name": "Chris Mason",
        "email": "chris.mason@oracle.com",
        "time": "Thu Sep 25 11:04:05 2008 -0400"
      },
      "message": "Btrfs: Leaf reference cache update\n\nThis changes the reference cache to make a single cache per root\ninstead of one cache per transaction, and to key by the byte number\nof the disk block instead of the keys inside.\n\nThis makes it much less likely to have cache misses if a snapshot\nor something has an extra reference on a higher node or a leaf while\nthe first transaction that added the leaf into the cache is dropping.\n\nSome throttling is added to functions that free blocks heavily so they\nwait for old transactions to drop.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n"
    },
    {
      "commit": "31153d81284934601d08110ac7698fd9a535e4c0",
      "tree": "38f873fea3012a58d2a8f4d439a9546443617878",
      "parents": [
        "3a115f520f391b4ab14041bdd6eedb370d944fa6"
      ],
      "author": {
        "name": "Yan Zheng",
        "email": "zheng.yan@oracle.com",
        "time": "Mon Jul 28 15:32:19 2008 -0400"
      },
      "committer": {
        "name": "Chris Mason",
        "email": "chris.mason@oracle.com",
        "time": "Thu Sep 25 11:04:05 2008 -0400"
      },
      "message": "Btrfs: Add a leaf reference cache\n\nMuch of the IO done while dropping snapshots is done looking up\nleaves in the filesystem trees to see if they point to any extents and\nto drop the references on any extents found.\n\nThis creates a cache so that IO isn\u0027t required.\n\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n"
    }
  ]
}