)]}'
{
  "log": [
    {
      "commit": "8f19ccb2fd70deb1f278be5e75076074cfddee46",
      "tree": "59419e814d4d02dfdefaf6f5ef152c3468c890e8",
      "parents": [
        "301946364e0aa67c4cfaec82e94c389993c9f7c6"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Fri Dec 23 10:17:56 2011 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Fri Dec 23 10:17:56 2011 +1100"
      },
      "message": "md/raid1: Allocate spare to store replacement devices and their bios.\n\nIn RAID1, a replacement is much like a normal device, so we just\ndouble the size of the relevant arrays and look at all possible\ndevices for reads and writes.\n\nThis means that the array looks like it is now double the size in some\nway - we need to be careful about that.\nIn particular, we checking if the array is still degraded while\ncreating a recovery request we need to only consider the first \u0027half\u0027\n- i.e. the real (non-replacement) devices.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "34db0cd60f8a1f4ab73d118a8be3797c20388223",
      "tree": "45d1d629d6b9195d47d30980595686c9a3ee92f9",
      "parents": [
        "84fc4b56db85cb9e05326424049973a2036c9940"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Oct 11 16:50:01 2011 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Oct 11 16:50:01 2011 +1100"
      },
      "message": "md: add proper write-congestion reporting to RAID1 and RAID10.\n\nRAID1 and RAID10 handle write requests by queuing them for handling by\na separate thread.  This is because when a write-intent-bitmap is\nactive we might need to update the bitmap first, so it is good to\nqueue a lot of writes, then do one big bitmap update for them all.\n\nHowever writeback request devices to appear to be congested after a\nwhile so it can make some guesstimate of throughput.  The infinite\nqueue defeats that (note that RAID5 has already has a finite queue so\nit doesn\u0027t suffer from this problem).\n\nSo impose a limit on the number of pending write requests.  By default\nit is 1024 which seems to be generally suitable.  Make it configurable\nvia module option just in case someone finds a regression.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "e8096360476689898f038feebf5b352c9ec43a2a",
      "tree": "e7570a5fc3cb0e40f29c55470a2261e03c44a8d1",
      "parents": [
        "e879a8793f915aa7933364d962d2435bd71de462"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Oct 11 16:49:05 2011 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Oct 11 16:49:05 2011 +1100"
      },
      "message": "md/raid1: typedef removal: conf_t -\u003e struct r1conf\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "0f6d02d580ca77ee4be085c29c5fe5b879df24d9",
      "tree": "6ac3a0f3fba6cc6f8d66e9c413460ab5a740db8e",
      "parents": [
        "9f2c9d12bcc53fcb3b787023723754e84d1aef8b"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Oct 11 16:48:46 2011 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Oct 11 16:48:46 2011 +1100"
      },
      "message": "md: remove typedefs: mirror_info_t -\u003e struct mirror_info\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "9f2c9d12bcc53fcb3b787023723754e84d1aef8b",
      "tree": "85fbc63c6e480bdebe06529e1af4d3d483d70452",
      "parents": [
        "2b8bf3451d1e3133ebc3998721d14013a6c27114"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Oct 11 16:48:43 2011 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Oct 11 16:48:43 2011 +1100"
      },
      "message": "md: remove typedefs: r10bio_t -\u003e struct r10bio and r1bio_t -\u003e struct r1bio\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "2b8bf3451d1e3133ebc3998721d14013a6c27114",
      "tree": "6ad9afb9124d5eb865d513ec3f30259231075a8f",
      "parents": [
        "fd01b88c75a718020ff77e7f560d33835e9b58de"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Oct 11 16:48:23 2011 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Oct 11 16:48:23 2011 +1100"
      },
      "message": "md: remove typedefs: mdk_thread_t -\u003e struct md_thread\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "fd01b88c75a718020ff77e7f560d33835e9b58de",
      "tree": "c455d5adefd58f3263dcf265bb8ba2024523b106",
      "parents": [
        "3cb03002000f133f9f97269edefd73611eafc873"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Oct 11 16:47:53 2011 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Oct 11 16:47:53 2011 +1100"
      },
      "message": "md: remove typedefs: mddev_t -\u003e struct mddev\n\nHaving mddev_t and \u0027struct mddev_s\u0027 is ugly and not preferred\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "3cb03002000f133f9f97269edefd73611eafc873",
      "tree": "77fdb146666298b33aaeef0c05f082b6f82840fe",
      "parents": [
        "50de8df4abca1b27dbf7b2f81a56451bd8b5a7d8"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Oct 11 16:45:26 2011 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Oct 11 16:45:26 2011 +1100"
      },
      "message": "md: removing typedefs:  mdk_rdev_t -\u003e struct md_rdev\n\nThe typedefs are just annoying. \u0027mdk\u0027 probably refers to \u0027md_k.h\u0027\nwhich used to be an include file that defined this thing.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "ce550c2059a67ee7834fc6f64cf895391d36a58e",
      "tree": "55d73447b2d75597802955559706a17feda9ce68",
      "parents": [
        "2dba6a911c284603d2085fec1e2d3c142f58a010"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Fri Oct 07 14:22:33 2011 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Fri Oct 07 14:22:33 2011 +1100"
      },
      "message": "md/raid1:  add documentation to r1_private_data_s data structure.\n\nThere wasn\u0027t much and it is inconsistent.\nAlso rearrange fields to keep related fields together.\n\nReported-by: Aapo Laine \u003caapo.laine@shiftmail.org\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "cd5ff9a16f0831f68c1024d5d776075b5123b034",
      "tree": "490e297bde3d0c52b55d38b38ed1cdb5b5b6f43e",
      "parents": [
        "2ca68f5ed7383733102ee53cd8fa4021ecc3b275"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jul 28 11:32:41 2011 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jul 28 11:32:41 2011 +1000"
      },
      "message": "md/raid1:  Handle write errors by updating badblock log.\n\nWhen we get a write error (in the data area, not in metadata),\nupdate the badblock log rather than failing the whole device.\n\nAs the write may well be many blocks, we trying writing each\nblock individually and only log the ones which fail.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\nReviewed-by: Namhyung Kim \u003cnamhyung@gmail.com\u003e\n"
    },
    {
      "commit": "2ca68f5ed7383733102ee53cd8fa4021ecc3b275",
      "tree": "29543cff802770d90380b889cf8b0cc01e7d1814",
      "parents": [
        "4367af556133723d0f443e14ca8170d9447317cb"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jul 28 11:32:10 2011 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jul 28 11:32:10 2011 +1000"
      },
      "message": "md/raid1: store behind-write pages in bi_vecs.\n\nWhen performing write-behind we allocate pages to store the data\nduring write.\nPreviously we just keep a list of pages.  Now we keep a list of\nbi_vec which includes offset and size.\nThis means that the r1bio has complete information to create a new\nbio which will be needed for retrying after write errors.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\nReviewed-by: Namhyung Kim \u003cnamhyung@gmail.com\u003e\n"
    },
    {
      "commit": "4367af556133723d0f443e14ca8170d9447317cb",
      "tree": "d87bb40920f0f43cea586b7dd99b45f713ffd614",
      "parents": [
        "1f68f0c4b677ccd6935ff61e4e6888787505f8dc"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jul 28 11:31:49 2011 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jul 28 11:31:49 2011 +1000"
      },
      "message": "md/raid1: clear bad-block record when write succeeds.\n\nIf we succeed in writing to a block that was recorded as\nbeing bad, we clear the bad-block record.\n\nThis requires some delayed handling as the bad-block-list update has\nto happen in process-context.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\nReviewed-by: Namhyung Kim \u003cnamhyung@gmail.com\u003e\n"
    },
    {
      "commit": "d2eb35acfdccbe2a3622ed6cc441a5482148423b",
      "tree": "77600cab29fc9e1fd39d612773086a456fc32d88",
      "parents": [
        "9f2f3830789a4c9c1af2d1437d407c43e05136e6"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jul 28 11:31:48 2011 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jul 28 11:31:48 2011 +1000"
      },
      "message": "md/raid1: avoid reading from known bad blocks.\n\nNow that we have a bad block list, we should not read from those\nblocks.\nThere are several main parts to this:\n  1/ read_balance needs to check for bad blocks, and return not only\n     the chosen device, but also how many good blocks are available\n     there.\n  2/ fix_read_error needs to avoid trying to read from bad blocks.\n  3/ read submission must be ready to issue multiple reads to\n     different devices as different bad blocks on different devices\n     could mean that a single large read cannot be served by any one\n     device, but can still be served by the array.\n     This requires keeping count of the number of outstanding requests\n     per bio.  This count is stored in \u0027bi_phys_segments\u0027\n  4/ retrying a read needs to also be ready to submit a smaller read\n     and queue another request for the rest.\n\nThis does not yet handle bad blocks when reading to perform resync,\nrecovery, or check.\n\n\u0027md_trim_bio\u0027 will also be used for RAID10, so put it in md.c and\nexport it.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "5389042ffa36976caa45a79af16081d759001fa7",
      "tree": "eb303de141a50f41ccac438e734b65dbfe25825e",
      "parents": [
        "a478a069b6adf186373a6648c54fc5f1d3c2f8eb"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Wed Jul 27 11:00:36 2011 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Wed Jul 27 11:00:36 2011 +1000"
      },
      "message": "md: change managed of recovery_disabled.\n\nIf we hit a read error while recovering a mirror, we want to abort the\nrecovery without necessarily failing the disk - as having a disk this\na read error is better than not having an array at all.\n\nCurrently this is managed with a per-array flag \"recovery_disabled\"\nand is only implemented for RAID1.  For RAID10 we will need finer\ngrained control as we might want to disable recovery for individual\ndevices separately.\n\nSo push more of the decision making into the personality.\n\u0027recovery_disabled\u0027 is now a \u0027cookie\u0027 which is copied when the\npersonality want to disable recovery and is changed when a device is\nadded to the array as this is used as a trigger to \u0027try recovery\nagain\u0027.\n\nThis will allow RAID10 to get the control that it needs.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "1ed7242e591af7e233234d483f12d33818b189d9",
      "tree": "87d4a65cdb3510a97da7f2aefb9534839c49cfa4",
      "parents": [
        "0fd018af37dadbb7826850883ad8abfecdb1a00b"
      ],
      "author": {
        "name": "Jonathan Brassow",
        "email": "jbrassow@redhat.com",
        "time": "Tue Jun 07 17:50:35 2011 -0500"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Wed Jun 08 15:11:31 2011 +1000"
      },
      "message": "MD: raid1 changes to allow use by device mapper\n\nMD RAID1: Changes to allow RAID1 to be used by device-mapper (dm-raid.c)\n\nAdded the necessary congestion function and conditionalize calls requiring an\narray \u0027queue\u0027 or \u0027gendisk\u0027.\n\nSigned-off-by: Jonathan Brassow \u003cjbrassow@redhat.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "af6d7b760c7547c1a410a333bdb24daed24e1043",
      "tree": "5789fa005f94911bc6a92a6cb8700b8025a3adc4",
      "parents": [
        "7ca78d57d11a91bc93b35342fa58647b85bedeb1"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Wed May 11 14:51:19 2011 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Wed May 11 14:51:19 2011 +1000"
      },
      "message": "md/raid1: improve handling of pages allocated for write-behind.\n\nThe current handling and freeing of these pages is a bit fragile.\nWe only keep the list of allocated pages in each bio, so we need to\nstill have a valid bio when freeing the pages, which is a bit clumsy.\n\nSo simply store the allocated page list in the r1_bio so it can easily\nbe found and freed when we are finished with the r1_bio.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "9b19553e0bd342957846037c996861d280ed694d",
      "tree": "8275aadb773bf89a7f4a6c84ccd18412744ab8a7",
      "parents": [
        "be2a2656eef95c32ca73e7a6a8c85671aa92e3f1"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Wed Oct 27 15:39:14 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Fri Oct 29 16:40:33 2010 +1100"
      },
      "message": "md/raid1: discard unused variable.\n\nThis structure field (flushing_bio_list) is never used, so remove it.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "e9c7469bb4f502dafc092166201bea1ad5fc0fbf",
      "tree": "04202b0bb88623d3005c909eaafcb280778902da",
      "parents": [
        "7bc9fddab074d6bb630344e1969e28d20b140621"
      ],
      "author": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Fri Sep 03 11:56:18 2010 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jaxboe@fusionio.com",
        "time": "Fri Sep 10 12:35:38 2010 +0200"
      },
      "message": "md: implment REQ_FLUSH/FUA support\n\nThis patch converts md to support REQ_FLUSH/FUA instead of now\ndeprecated REQ_HARDBARRIER.  In the core part (md.c), the following\nchanges are notable.\n\n* Unlike REQ_HARDBARRIER, REQ_FLUSH/FUA don\u0027t interfere with\n  processing of other requests and thus there is no reason to mark the\n  queue congested while FLUSH/FUA is in progress.\n\n* REQ_FLUSH/FUA failures are final and its users don\u0027t need retry\n  logic.  Retry logic is removed.\n\n* Preflush needs to be issued to all member devices but FUA writes can\n  be handled the same way as other writes - their processing can be\n  deferred to request_queue of member devices.  md_barrier_request()\n  is renamed to md_flush_request() and simplified accordingly.\n\nFor linear, raid0 and multipath, the core changes are enough.  raid1,\n5 and 10 need the following conversions.\n\n* raid1: Handling of FLUSH/FUA bio\u0027s can simply be deferred to\n  request_queues of member devices.  Barrier related logic removed.\n\n* raid5: Queue draining logic dropped.  FUA bit is propagated through\n  biodrain and stripe resconstruction such that all the updated parts\n  of the stripe are written out with FUA writes if any of the dirtying\n  writes was FUA.  preread_active_stripes handling in make_request()\n  is updated as suggested by Neil Brown.\n\n* raid10: FUA bit needs to be propagated to write clones.\n\nlinear, raid0, 1, 5 and 10 tested.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nReviewed-by: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n"
    },
    {
      "commit": "709ae4879ae33628ded276ce7da8cd5acfec476b",
      "tree": "db9714769f0b7d9b764eaf26ca51185519ae07bc",
      "parents": [
        "6eef4b21ffc9207b78fdd718154f5b004644b97d"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Dec 14 12:49:51 2009 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Dec 14 12:51:41 2009 +1100"
      },
      "message": "md/raid1: add takeover support for raid5-\u003eraid1\n\nA 2-device raid5 array can now be converted to raid1.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "070ec55d07157a3041f92654135c3c6e2eaaf901",
      "tree": "10f24d859e669ba4a671204ce4176a2b43fdaae5",
      "parents": [
        "a6b3deafe0c50e3e873e8ed5cc8abfcb25c05eff"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 16 16:54:21 2009 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 16 16:54:21 2009 +1000"
      },
      "message": "md: remove mddev_to_conf \"helper\" macro\n\nHaving a macro just to cast a void* isn\u0027t really helpful.\nI would must rather see that we are simply de-referencing -\u003eprivate,\nthan have to know what the macro does.\n\nSo open code the macro everywhere and remove the pointless cast.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "bff61975b3d6c18ee31457cc5b4d73042f44915f",
      "tree": "3aff48088b35172e74f56ae54f0b53e76a0c2150",
      "parents": [
        "92022950c6b1bb3da90b2976b20271cdfd98b8a3"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Mar 31 14:33:13 2009 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Mar 31 14:33:13 2009 +1100"
      },
      "message": "md: move lots of #include lines out of .h files and into .c\n\nThis makes the includes more explicit, and is preparation for moving\nmd_k.h to drivers/md/md.h\n\nRemove include/raid/md.h as its only remaining use was to #include\nother files.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "ef740c372dfd80e706dbf955d4e4aedda6c0c148",
      "tree": "8d9ef9db346ee1ba319a125c9de83cdde049510d",
      "parents": [
        "2a40a8aed083d988df6822bb9b1b08fb7ce21e1d"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Tue Mar 31 14:27:03 2009 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Mar 31 14:27:03 2009 +1100"
      },
      "message": "md: move headers out of include/linux/raid/\n\nMove the headers with the local structures for the disciplines and\nbitmap.h into drivers/md/ so that they are more easily grepable for\nhacking and not far away.  md.h is left where it is for now as there\nare some uses from the outside.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "11ce99e625fe2718ad2682bfdd99070b337e6252",
      "tree": "48e40104a058f27e9cd717c42edcf6738fef2372",
      "parents": [
        "867868fb557eb2a2120b80779468fa372584ddb0"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Oct 03 01:15:52 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Tue Oct 03 08:04:17 2006 -0700"
      },
      "message": "[PATCH] md: Remove working_disks from raid1 state data\n\nIt is equivalent to conf-\u003eraid_disks - conf-\u003emddev-\u003edegraded.\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "9e71f9c848e669f003b1319da52f03cb8e7d7403",
      "tree": "3c873cce6b2d5da5237be20fe98124e8f4968d4d",
      "parents": [
        "e9028b0ff2bad1954568604dc17725692c8524d6"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Mar 23 02:59:22 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Thu Mar 23 07:38:03 2006 -0800"
      },
      "message": "[PATCH] DM: Fix bug: BIO_RW_BARRIER requests to md/raid1 hang.\n\nBoth R1BIO_Barrier and R1BIO_Returned are 4 !!!!\n\nThis means that barrier requests don\u0027t get returned (i.e.  b_endio called)\nbecause it looks like they already have been.\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "cf30a473a02901fe4db37abc0b0fa26dd5ba3f72",
      "tree": "3fa967963e174913826943f0f98e63c60032d07d",
      "parents": [
        "69382e85371c232df71524137a806b9c210ec021"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Fri Jan 06 00:20:23 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jan 06 08:34:04 2006 -0800"
      },
      "message": "[PATCH] md: handle errors when read-only\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "ddaf22abaa831763e75775e6d4c7693504237997",
      "tree": "4f6ba4cb056f8c7cea82c7d548769b879d0fb405",
      "parents": [
        "d69762e98456b71167865db9e33e732a28dd36ab"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Fri Jan 06 00:20:19 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jan 06 08:34:03 2006 -0800"
      },
      "message": "[PATCH] md: attempt to auto-correct read errors in raid1\n\nOn a read-error we suspend the array, then synchronously read the block from\nother arrays until we find one where we can read it.  Then we try writing the\ngood data back everywhere and make sure it works.  If any write or subsequent\nread fails, only then do we fail the device out of the array.\n\nTo be able to suspend the array, we need to also keep track of how many\nrequests are queued for handling by raid1d.\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "17999be4aa408e7ff3b9d32c735649676567a3cd",
      "tree": "14f9fd4ef0299f16274ce2980baef7b96f111bea",
      "parents": [
        "ac81b2ee45eb811fdb0aa1cfb71d468d944d00ce"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Fri Jan 06 00:20:12 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jan 06 08:34:01 2006 -0800"
      },
      "message": "[PATCH] md: improve raid1 \"IO Barrier\" concept\n\nraid1 needs to put up a barrier to new requests while it does resync or other\nbackground recovery.  The code for this is currently open-coded, slighty\nobscure by its use of two waitqueues, and not documented.\n\nThis patch gathers all the related code into 4 functions, and includes a\ncomment which (hopefully) explains what is happening.\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "a9701a30470856408d08657eb1bd7ae29a146190",
      "tree": "eb6ea8c82fdc1b50bf56abadeee63a935034cf27",
      "parents": [
        "bd926c63b7a6843d3ce2728396c0891e54fce5c4"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Nov 08 21:39:34 2005 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Nov 09 07:56:38 2005 -0800"
      },
      "message": "[PATCH] md: support BIO_RW_BARRIER for md/raid1\n\nWe can only accept BARRIER requests if all slaves handle\nbarriers, and that can, of course, change with time....\n\nSo we keep track of whether the whole array seems safe for barriers,\nand also whether each individual rdev handles barriers.\n\nWe initially assumes barriers are OK.\n\nWhen writing the superblock we try a barrier, and if that fails, we flag\nthings for no-barriers.  This will usually clear the flags fairly quickly.\n\nIf writing the superblock finds that BIO_RW_BARRIER is -ENOTSUPP, we need to\nresubmit, so introduce function \"md_super_wait\" which waits for requests to\nfinish, and retries ENOTSUPP requests without the barrier flag.\n\nWhen writing the real raid1, write requests which were BIO_RW_BARRIER but\nwhich aresn\u0027t supported need to be retried.  So raid1d is enhanced to do this,\nand when any bio write completes (i.e.  no retry needed) we remove it from the\nr1bio, so that devices needing retry are easy to find.\n\nWe should hardly ever get -ENOTSUPP errors when writing data to the raid.\nIt should only happen if:\n  1/ the device used to support BARRIER, but now doesn\u0027t.  Few devices\n     change like this, though raid1 can!\nor\n  2/ the array has no persistent superblock, so there was no opportunity to\n     pre-test for barriers when writing the superblock.\n\nSigned-off-by: Neil Brown \u003cneilb@cse.unsw.edu.au\u003e\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "4b6d287f627b5fb6a49f78f9e81649ff98c62bb7",
      "tree": "7b6cbc6a997e25a7fb6185da7129e539c4ffda8b",
      "parents": [
        "8ddf9efe6708f3674f0ddfeb6425fd27bea109a2"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@cse.unsw.edu.au",
        "time": "Fri Sep 09 16:23:47 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Sep 09 16:39:10 2005 -0700"
      },
      "message": "[PATCH] md: add write-behind support for md/raid1\n\nIf a device is flagged \u0027WriteMostly\u0027 and the array has a bitmap, and the\nbitmap superblock indicates that write_behind is allowed, then write_behind is\nenabled for WriteMostly devices.\n\nWrite requests will be acknowledges as complete to the caller (via b_end_io)\nwhen all non-WriteMostly devices have completed the write, but will not be\ncleared from the bitmap until all devices complete.\n\nThis requires memory allocation to make a local copy of the data being\nwritten.  If there is insufficient memory, then we fall-back on normal write\nsemantics.\n\nSigned-Off-By: Paul Clements \u003cpaul.clements@steeleye.com\u003e\nSigned-off-by: Neil Brown \u003cneilb@cse.unsw.edu.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "191ea9b2c7cc3ebbe0678834ab710d7d95ad3f9a",
      "tree": "25ccd0d191742f4e25f37784370520d254aacc12",
      "parents": [
        "aa3163f81654fa057039258e32a6811147bf0c14"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@cse.unsw.edu.au",
        "time": "Tue Jun 21 17:17:23 2005 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@ppc970.osdl.org",
        "time": "Tue Jun 21 19:07:46 2005 -0700"
      },
      "message": "[PATCH] md: raid1 support for bitmap intent logging\n\nSigned-off-by: Neil Brown \u003cneilb@cse.unsw.edu.au\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"
    }
  ]
}