)]}'
{
  "log": [
    {
      "commit": "7ac687d9e047b3fa335f04e18c7188db6a170334",
      "tree": "5f17ea504a2185070b75076ea0108d88b96309c3",
      "parents": [
        "e8e3c3d66fd9d1ee2250f68d778cc48c1346d228"
      ],
      "author": {
        "name": "Cong Wang",
        "email": "amwang@redhat.com",
        "time": "Fri Nov 25 23:14:28 2011 +0800"
      },
      "committer": {
        "name": "Cong Wang",
        "email": "xiyou.wangcong@gmail.com",
        "time": "Tue Mar 20 21:48:21 2012 +0800"
      },
      "message": "btrfs: remove the second argument of k[un]map_atomic()\n\nSigned-off-by: Cong Wang \u003camwang@redhat.com\u003e\n"
    },
    {
      "commit": "ca9b688c1c9a21635cfc8af8b68565b154185196",
      "tree": "bfc9eed8a9099503645b467733707246b246ed19",
      "parents": [
        "b4dc2b8c694ead005b828f5fb7fa1134db5b6275"
      ],
      "author": {
        "name": "Li Zefan",
        "email": "lizf@cn.fujitsu.com",
        "time": "Wed Feb 16 06:06:41 2011 +0000"
      },
      "committer": {
        "name": "Chris Mason",
        "email": "chris.mason@oracle.com",
        "time": "Wed Feb 16 15:37:58 2011 -0500"
      },
      "message": "Btrfs: Avoid accessing unmapped kernel address\n\nWhen decompressing a chunk of data, we\u0027ll copy the data out to\na working buffer if the data is stored in more than one page,\notherwise we\u0027ll use the mapped page directly to avoid memory\ncopy.\n\nIn the latter case, we\u0027ll end up accessing the kernel address\nafter we\u0027ve unmapped the page in a corner case.\n\nReported-by: Juan Francisco Cantero Hurtado \u003ciam@juanfra.info\u003e\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n"
    },
    {
      "commit": "3a39c18d63fec35f49df577d4b2a4e29c2212f22",
      "tree": "78b8c032e18e2231c18e89ac3f8f5746abdb119c",
      "parents": [
        "1a419d85a76853d7d04e9b6280a80e96770bf3e3"
      ],
      "author": {
        "name": "Li Zefan",
        "email": "lizf@cn.fujitsu.com",
        "time": "Mon Nov 08 15:22:19 2010 +0800"
      },
      "committer": {
        "name": "Li Zefan",
        "email": "lizf@cn.fujitsu.com",
        "time": "Wed Dec 22 23:15:50 2010 +0800"
      },
      "message": "btrfs: Extract duplicate decompress code\n\nAdd a common function to copy decompressed data from working buffer\nto bio pages.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\n"
    },
    {
      "commit": "a6fa6fae40ec336c7df6155255ae64ebef43a8bc",
      "tree": "6cda8aa6a60967206614a941f034249e3017913e",
      "parents": [
        "261507a02ccba9afda919852263b6bc1581ce1ef"
      ],
      "author": {
        "name": "Li Zefan",
        "email": "lizf@cn.fujitsu.com",
        "time": "Mon Oct 25 15:12:26 2010 +0800"
      },
      "committer": {
        "name": "Li Zefan",
        "email": "lizf@cn.fujitsu.com",
        "time": "Wed Dec 22 23:15:47 2010 +0800"
      },
      "message": "btrfs: Add lzo compression support\n\nLzo is a much faster compression algorithm than gzib, so would allow\nmore users to enable transparent compression, and some users can\nchoose from compression ratio and speed for different applications\n\nUsage:\n\n # mount -t btrfs -o compress[\u003d\u003czlib,lzo\u003e] dev /mnt\nor\n # mount -t btrfs -o compress-force[\u003d\u003czlib,lzo\u003e] dev /mnt\n\n\"-o compress\" without argument is still allowed for compatability.\n\nCompatibility:\n\nIf we mount a filesystem with lzo compression, it will not be able be\nmounted in old kernels. One reason is, otherwise btrfs will directly\ndump compressed data, which sits in inline extent, to user.\n\nPerformance:\n\nThe test copied a linux source tarball (~400M) from an ext4 partition\nto the btrfs partition, and then extracted it.\n\n(time in second)\n           lzo        zlib        nocompress\ncopy:      10.6       21.7        14.9\nextract:   70.1       94.4        66.6\n\n(data size in MB)\n           lzo        zlib        nocompress\ncopy:      185.87     108.69      394.49\nextract:   193.80     132.36      381.21\n\nChangelog:\n\nv1 -\u003e v2:\n- Select LZO_COMPRESS and LZO_DECOMPRESS in btrfs Kconfig.\n- Add incompability flag.\n- Fix error handling in compress code.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\n"
    }
  ]
}