)]}'
{
  "log": [
    {
      "commit": "3d61f75eefedf75914ab4453c67aaa2ee64bcf93",
      "tree": "7a6c2c461a05f36694466dac40f386b11d15dac2",
      "parents": [
        "8b91582500ae750db22bd515379616e5e9ad06ab"
      ],
      "author": {
        "name": "Hisashi Hifumi",
        "email": "hifumi.hisashi@oss.ntt.co.jp",
        "time": "Mon Apr 28 02:16:05 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 28 08:58:43 2008 -0700"
      },
      "message": "ext3: fdatasync should skip metadata writeout when overwriting\n\nCurrently fdatasync is identical to fsync in ext3.\n\nI think fdatasync should skip journal flush in data\u003dordered and\ndata\u003dwriteback mode when it overwrites to already-instantiated blocks on\nHDD.  When I_DIRTY_DATASYNC flag is not set, fdatasync should skip journal\nwriteout because this indicates only atime or/and mtime updates.\n\nFollowing patch is the same approach of ext2\u0027s fsync code(ext2_sync_file).\n\nI did a performance test using the sysbench.\n\n#sysbench --num-threads\u003d128 --max-requests\u003d50000 --test\u003dfileio --file-total-size\u003d128G\n--file-test-mode\u003drndwr --file-fsync-mode\u003dfdatasync run\n\nThe result on ext3 was:\n\n\t-2.6.24\n\tOperations performed:  0 Read, 50080 Write, 59600 Other \u003d 109680 Total\n\tRead 0b  Written 782.5Mb  Total transferred 782.5Mb  (12.116Mb/sec)\n\t  775.45 Requests/sec executed\n\n\tTest execution summary:\n\t    total time:                          64.5814s\n\t    total number of events:              50080\n\t    total time taken by event execution: 3713.9836\n\t    per-request statistics:\n\t         min:                            0.0000s\n\t         avg:                            0.0742s\n\t         max:                            0.9375s\n\t         approx.  95 percentile:         0.2901s\n\n\tThreads fairness:\n\t    events (avg/stddev):           391.2500/23.26\n\t    execution time (avg/stddev):   29.0155/1.99\n\n\t-2.6.24-patched\n\tOperations performed:  0 Read, 50009 Write, 61596 Other \u003d 111605 Total\n\tRead 0b  Written 781.39Mb  Total transferred 781.39Mb  (16.419Mb/sec)\n\t1050.83 Requests/sec executed\n\n\tTest execution summary:\n\t    total time:                          47.5900s\n\t    total number of events:              50009\n\t    total time taken by event execution: 2934.5768\n\t    per-request statistics:\n \t         min:                            0.0000s\n\t         avg:                            0.0587s\n \t         max:                            0.8938s\n\t         approx.  95 percentile:         0.1993s\n\n\tThreads fairness:\n\t    events (avg/stddev):           390.6953/22.64\n\t    execution time (avg/stddev):   22.9264/1.17\n\nFilesystem I/O throughput was improved.\n\nSigned-off-by :Hisashi Hifumi \u003chifumi.hisashi@oss.ntt.co.jp\u003e\nAcked-by: Jan Kara \u003cjack@suse.cz\u003e\nCc: \u003clinux-ext4@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "c80544dc0b87bb65038355e7aafdc30be16b26ab",
      "tree": "176349304bec88a9de16e650c9919462e0dd453c",
      "parents": [
        "0e9663ee452ffce0d429656ebbcfe69417a30e92"
      ],
      "author": {
        "name": "Stephen Hemminger",
        "email": "shemminger@linux-foundation.org",
        "time": "Thu Oct 18 03:07:05 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Oct 18 14:37:31 2007 -0700"
      },
      "message": "sparse pointer use of zero as null\n\nGet rid of sparse related warnings from places that use integer as NULL\npointer.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Stephen Hemminger \u003cshemminger@linux-foundation.org\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Jeff Garzik \u003cjeff@garzik.org\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\nCc: Ian Kent \u003craven@themaw.net\u003e\nCc: Arnd Bergmann \u003carnd@arndb.de\u003e\nCc: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nCc: Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ae6ddcc5f24d6b06ae9231dc128904750a4155e0",
      "tree": "93c6e20b513f39b616af101dabe9b756f7300d0d",
      "parents": [
        "e7ab8d65055e9b9dfc131d0467cfc5a8368d7ee4"
      ],
      "author": {
        "name": "Mingming Cao",
        "email": "cmm@us.ibm.com",
        "time": "Wed Sep 27 01:49:27 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Sep 27 08:26:09 2006 -0700"
      },
      "message": "[PATCH] ext3 and jbd cleanup: remove whitespace\n\nRemove whitespace from ext3 and jbd, before we clone ext4.\n\nSigned-off-by: Mingming Cao\u003ccmm@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
      "tree": "0bba044c4ce775e45a88a51686b5d9f90697ea9d",
      "parents": [],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@ppc970.osdl.org",
        "time": "Sat Apr 16 15:20:36 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@ppc970.osdl.org",
        "time": "Sat Apr 16 15:20:36 2005 -0700"
      },
      "message": "Linux-2.6.12-rc2\n\nInitial git repository build. I\u0027m not bothering with the full history,\neven though we have it. We can create a separate \"historical\" git\narchive of that later if we want to, and in the meantime it\u0027s about\n3.2GB when imported into git - space that would just make the early\ngit days unnecessarily complicated, when we don\u0027t have a lot of good\ninfrastructure for it.\n\nLet it rip!\n"
    }
  ]
}