)]}'
{
  "log": [
    {
      "commit": "42dad7647aec49b3ad20dd0cb832b232a6ae514f",
      "tree": "b70d4cb7706f2647e65426e24f078ddf14d6e139",
      "parents": [
        "097102c2d04974bdfcfa16a5f3062d499842139c"
      ],
      "author": {
        "name": "Jerome Marchand",
        "email": "jmarchan@redhat.com",
        "time": "Wed Apr 22 14:01:49 2009 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Fri Apr 24 08:54:21 2009 +0200"
      },
      "message": "block: simplify I/O stat accounting\n\nThis simplifies I/O stat accounting switching code and separates it\ncompletely from I/O scheduler switch code.\n\nRequests are accounted according to the state of their request queue\nat the time of the request allocation. There is no need anymore to\nflush the request queue when switching I/O accounting state.\n\nSigned-off-by: Jerome Marchand \u003cjmarchan@redhat.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "f600abe2de81628c40effbb3f8eaf5af0d291e57",
      "tree": "db8e27854110b68bac454d8dc79c756800dc4afb",
      "parents": [
        "8f3d8ba20e67991b531e9c0227dcd1f99271a32c"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Wed Apr 08 14:22:01 2009 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Wed Apr 15 08:28:09 2009 +0200"
      },
      "message": "block: fix bad spelling of quiesce\n\nCredit goes to Andrew Morton for spotting this one.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "26308eab69aa193f7b3fb50764a64ae14544a39b",
      "tree": "758f6100395a23228d042c3a9d6f7dc1922d7530",
      "parents": [
        "6c7e8cee6a9128eeb7f83c3ad1cb243f77f5cb16"
      ],
      "author": {
        "name": "Jerome Marchand",
        "email": "jmarchan@redhat.com",
        "time": "Fri Mar 27 10:31:51 2009 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Tue Apr 07 08:12:38 2009 +0200"
      },
      "message": "block: fix inconsistency in I/O stat accounting code\n\nThis forces in_flight to be zero when turning off or on the I/O stat\naccounting and stops updating I/O stats in attempt_merge() when\naccounting is turned off.\n\nSigned-off-by: Jerome Marchand \u003cjmarchan@redhat.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "1faa16d22877f4839bd433547d770c676d1d964c",
      "tree": "9a0d50be1ef0358c1f53d7107413100904e7d526",
      "parents": [
        "0221c81b1b8eb0cbb6b30a0ced52ead32d2b4e4c"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Mon Apr 06 14:48:01 2009 +0200"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Apr 06 08:04:53 2009 -0700"
      },
      "message": "block: change the request allocation/congestion logic to be sync/async based\n\nThis makes sure that we never wait on async IO for sync requests, instead\nof doing the split on writes vs reads.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "bc58ba9468d94d62c56ab9b47173583ec140b165",
      "tree": "e31bee7a5001efdd40ed568151d5fdfa8b1a746a",
      "parents": [
        "7598909e3ee2a08726276d6415b69dadb52d0d76"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Fri Jan 23 10:54:44 2009 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Fri Jan 30 12:34:38 2009 +0100"
      },
      "message": "block: add sysfs file for controlling io stats accounting\n\nThis allows us to turn off disk stat accounting completely, for the cases\nwhere the 0.5-1% reduction in system time is important.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "1308835ffffe6d61ad1f48c5c381c9cc47f683ec",
      "tree": "5430cde36604537fdc3c597f53f65cba990f08fd",
      "parents": [
        "16642eb68216d8e0e136a99e514e9166e7125838"
      ],
      "author": {
        "name": "Bartlomiej Zolnierkiewicz",
        "email": "bzolnier@gmail.com",
        "time": "Wed Jan 07 12:22:39 2009 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Fri Jan 30 12:34:37 2009 +0100"
      },
      "message": "block: export SSD/non-rotational queue flag through sysfs\n\nFor some devices (i.e. CFA ATA) we can\u0027t reliably detect whether\nthe device is of rotational or non-rotational type so we need to\nleave the final decision about this setting to the user-space.\n\nAs a bonus do a minor CodingStyle fixup in queue_nomerges_store().\n\nSuggested-by: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nSigned-off-by: Bartlomiej Zolnierkiewicz \u003cbzolnier@gmail.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "7c239517d9f18427fc2e7ed259fb3b866595f5af",
      "tree": "cd2149cc2f2eb0faa83d38fe64e1228f7c703a85",
      "parents": [
        "42364690992e592c05f85c76fda4055820b48c1b"
      ],
      "author": {
        "name": "Wu Fengguang",
        "email": "fengguang.wu@intel.com",
        "time": "Tue Nov 25 09:08:39 2008 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Mon Dec 29 08:28:43 2008 +0100"
      },
      "message": "block: don\u0027t take lock on changing ra_pages\n\nThere\u0027s no need to take queue_lock or kernel_lock when modifying\nbdi-\u003era_pages. So remove them. Also remove out of date comment for\nqueue_max_sectors_store().\n\nSigned-off-by: Wu Fengguang \u003cwfg@linux.intel.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "c7c22e4d5c1fdebfac4dba76de7d0338c2b0d832",
      "tree": "ecc3d2517b3471ccc35d4cb4e3b48d4b57205061",
      "parents": [
        "18887ad910e56066233a07fd3cfb2fa11338b782"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Sat Sep 13 20:26:01 2008 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Thu Oct 09 08:56:09 2008 +0200"
      },
      "message": "block: add support for IO CPU affinity\n\nThis patch adds support for controlling the IO completion CPU of\neither all requests on a queue, or on a per-request basis. We export\na sysfs variable (rq_affinity) which, if set, migrates completions\nof requests to the CPU that originally submitted it. A bio helper\n(bio_set_completion_cpu()) is also added, so that queuers can ask\nfor completion on that specific CPU.\n\nIn testing, this has been show to cut the system time by as much\nas 20-40% on synthetic workloads where CPU affinity is desired.\n\nThis requires a little help from the architecture, so it\u0027ll only\nwork as designed for archs that are using the new generic smp\nhelper infrastructure.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "ed9e1982347b36573cd622ee5f4e2a7ccd79b3fd",
      "tree": "79d834094d655ec97cfc0a382a9207ebc8e711a5",
      "parents": [
        "870d6656126add8e383645732b03df2b7ccd4f94"
      ],
      "author": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Mon Aug 25 19:56:05 2008 +0900"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Thu Oct 09 08:56:07 2008 +0200"
      },
      "message": "block: implement and use {disk|part}_to_dev()\n\nImplement {disk|part}_to_dev() and use them to access generic device\ninstead of directly dereferencing {disk|part}-\u003edev.  To make sure no\nuser is left behind, rename generic devices fields to __dev.\n\nThis is in preparation of unifying partition 0 handling with other\npartitions.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "bf0f97025c7306870b86ccd63669aa278e7ec1c2",
      "tree": "d8988d1f6d817a1bb31563c9864f616a52c4c0b4",
      "parents": [
        "c0a18111e571138747a98af18b3a2124df56a0d1"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Wed May 07 09:09:39 2008 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Wed May 07 09:09:39 2008 +0200"
      },
      "message": "block: sysfs store function needs to grab queue_lock and use queue_flag_*()\n\nConcurrency isn\u0027t a big deal here since we have requests in flight\nat this point, but do the locked variant to set a better example.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "ac9fafa1243640349aa481adf473db283a695766",
      "tree": "155c2371cca8971638d781269f39fa015bc6509c",
      "parents": [
        "d7e3c3249ef23b4617393c69fe464765b4ff1645"
      ],
      "author": {
        "name": "Alan D. Brunelle",
        "email": "Alan.Brunelle@hp.com",
        "time": "Tue Apr 29 14:44:19 2008 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Tue Apr 29 14:48:55 2008 +0200"
      },
      "message": "block: Skip I/O merges when disabled\n\nThe block I/O + elevator + I/O scheduler code spend a lot of time trying\nto merge I/Os -- rightfully so under \"normal\" circumstances. However,\nif one were to know that the incoming I/O stream was /very/ random in\nnature, the cycles are wasted.\n\nThis patch adds a per-request_queue tunable that (when set) disables\nmerge attempts (beyond the simple one-hit cache check), thus freeing up\na non-trivial amount of CPU cycles.\n\nSigned-off-by: Alan D. Brunelle \u003calan.brunelle@hp.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "fb199746303a6bfd6121834ec9e810471185c530",
      "tree": "c50ed0dd313e7fcffddd021639473f001fcf8b05",
      "parents": [
        "2472892a3ce17b177cc0d8099a6391949c75abf2"
      ],
      "author": {
        "name": "Akinobu Mita",
        "email": "akinobu.mita@gmail.com",
        "time": "Mon Apr 21 09:51:06 2008 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Mon Apr 21 09:51:06 2008 +0200"
      },
      "message": "block: fix blk_register_queue() return value\n\nblk_register_queue() returns -ENXIO when queue-\u003erequest_fn is NULL.  But there\nare some block drivers that call blk_register_queue() via add_disk() with\nqueue-\u003erequest_fn \u003d\u003d NULL.  (For example, brd, loop)\n\nAlthough no one checks return value of blk_register_queue(), this patch makes\nit return 0 instead of -ENXIO when queue-\u003erequest_fn is NULL,\n\nAlso this patch adds warning when blk_register_queue() and\nblk_unregister_queue() are called with queue \u003d\u003d NULL rather than ignore\ninvalid usage silently.\n\nSigned-off-by: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nCc: Jens Axboe \u003caxboe@kernel.dk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "6728cb0e6343d4068ccec13f07212e6382d3ff33",
      "tree": "5a7826dc91cf2d9cf54e8c24b40aa3c4d892c797",
      "parents": [
        "22b132102f1540dd40f3e41df88796829b685f1a"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Thu Jan 31 13:03:55 2008 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Fri Feb 01 09:26:33 2008 +0100"
      },
      "message": "block: make core bits checkpatch compliant\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "e68b903c6b2b88c60050675b056648468f33ab54",
      "tree": "6622d232adae87af15a9e42e024b513012e59d2b",
      "parents": [
        "7da975a231ae8c11593fd79d1083215321be213a"
      ],
      "author": {
        "name": "Martin K. Petersen",
        "email": "martin.petersen@oracle.com",
        "time": "Tue Jan 29 19:14:08 2008 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Tue Jan 29 21:55:17 2008 +0100"
      },
      "message": "Expose hardware sector size\n\nExpose hardware sector size in sysfs queue directory.\n\nSigned-off-by: Martin K. Petersen \u003cmartin.petersen@oracle.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "8324aa91d1e11a1fc25f209687a0b2e6c2ed47d0",
      "tree": "c63753df94b741d328840edabde74462591ca0b3",
      "parents": [
        "a168ee84c90b39ece357da127ab388f2f64db19c"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Tue Jan 29 14:51:59 2008 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Tue Jan 29 21:55:07 2008 +0100"
      },
      "message": "block: split tag and sysfs handling from blk-core.c\n\nSeperates the tag and sysfs handling from ll_rw_blk.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    }
  ]
}