)]}'
{
  "log": [
    {
      "commit": "3d30701b58970425e1d45994d6cb82f828924fdd",
      "tree": "8b14cf462628bebf8548c1b8c205a674564052d1",
      "parents": [
        "8cbd84f2dd4e52a8771b191030c374ba3e56d291",
        "fd8aa2c1811bf60ccb2d5de0579c6f62aec1772d"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Aug 10 15:38:19 2010 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Aug 10 15:38:19 2010 -0700"
      },
      "message": "Merge branch \u0027for-linus\u0027 of git://neil.brown.name/md\n\n* \u0027for-linus\u0027 of git://neil.brown.name/md: (24 commits)\n  md: clean up do_md_stop\n  md: fix another deadlock with removing sysfs attributes.\n  md: move revalidate_disk() back outside open_mutex\n  md/raid10: fix deadlock with unaligned read during resync\n  md/bitmap:  separate out loading a bitmap from initialising the structures.\n  md/bitmap: prepare for storing write-intent-bitmap via dm-dirty-log.\n  md/bitmap: optimise scanning of empty bitmaps.\n  md/bitmap: clean up plugging calls.\n  md/bitmap: reduce dependence on sysfs.\n  md/bitmap: white space clean up and similar.\n  md/raid5: export raid5 unplugging interface.\n  md/plug: optionally use plugger to unplug an array during resync/recovery.\n  md/raid5: add simple plugging infrastructure.\n  md/raid5: export is_congested test\n  raid5: Don\u0027t set read-ahead when there is no queue\n  md: add support for raising dm events.\n  md: export various start/stop interfaces\n  md: split out md_rdev_init\n  md: be more careful setting MD_CHANGE_CLEAN\n  md/raid5: ensure we create a unique name for kmem_cache when mddev has no gendisk\n  ...\n"
    },
    {
      "commit": "fd8aa2c1811bf60ccb2d5de0579c6f62aec1772d",
      "tree": "311567d03758afc3a93b4273fe172836e89bb01d",
      "parents": [
        "6e17b0276452912cb13445e5ea552b599984675f",
        "2144381da478cc4aa3a29ee29b0c5e6ddaaced14"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Aug 10 10:02:33 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Aug 10 10:02:33 2010 +1000"
      },
      "message": "Merge git://git.infradead.org/users/dwmw2/libraid-2.6 into for-linus\n"
    },
    {
      "commit": "2144381da478cc4aa3a29ee29b0c5e6ddaaced14",
      "tree": "380a29fec86b537ed602d12f4050654b1c66c27c",
      "parents": [
        "45d7f32c7a43cbb9592886d38190e379e2eb2226",
        "e5d84970a554d5c0072043a7b9f0f5b88b5fdfe1"
      ],
      "author": {
        "name": "David Woodhouse",
        "email": "David.Woodhouse@intel.com",
        "time": "Mon Aug 09 10:36:44 2010 +0100"
      },
      "committer": {
        "name": "David Woodhouse",
        "email": "David.Woodhouse@intel.com",
        "time": "Mon Aug 09 10:36:44 2010 +0100"
      },
      "message": "Merge branch \u0027async\u0027 of macbook:git/btrfs-unstable\n\nConflicts:\n\tdrivers/md/Makefile\n\tlib/raid6/unroll.pl\n"
    },
    {
      "commit": "6e17b0276452912cb13445e5ea552b599984675f",
      "tree": "1ccac9c3d01f7ea8c6c0061948b92c901253e676",
      "parents": [
        "bb4f1e9d0e2ef93de8e36ca0f5f26625fcd70b7d"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Sat Aug 07 21:41:19 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Sun Aug 08 21:22:45 2010 +1000"
      },
      "message": "md: clean up do_md_stop\n\nThere is only one error exit from do_md_stop, so make that more\nexplicit and discard the \u0027err\u0027 variable.\nAlso drop the \u0027revalidate\u0027 variable by moving the unlock calls around.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "bb4f1e9d0e2ef93de8e36ca0f5f26625fcd70b7d",
      "tree": "7c7edc0d5fa2b5702358f11396d52d07183708c0",
      "parents": [
        "147e0b6a639ac581ca3bf627bedc3f4a6d3eca66"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Sun Aug 08 21:18:03 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Sun Aug 08 21:21:27 2010 +1000"
      },
      "message": "md: fix another deadlock with removing sysfs attributes.\n\nMove the deletion of sysfs attributes from reconfig_mutex to\nopen_mutex didn\u0027t really help as a process can try to take\nopen_mutex while holding reconfig_mutex, so the same deadlock can\nhappen, just requiring one more process to be involved in the chain.\n\nI looks like I cannot easily use locking to wait for the sysfs\ndeletion to complete, so don\u0027t.\n\nThe only things that we cannot do while the deletions are still\npending is other things which can change the sysfs namespace: run,\ntakeover, stop.  Each of these can fail with -EBUSY.\nSo set a flag while doing a sysfs deletion, and fail run, takeover,\nstop if that flag is set.\n\nThis is suitable for 2.6.35.x\n\nCc: stable@kernel.org\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "147e0b6a639ac581ca3bf627bedc3f4a6d3eca66",
      "tree": "95ca7cb3b2f06586d678ec33c0e9910d11f3af42",
      "parents": [
        "51e9ac77035a3dfcb6fc0a88a0d80b6f99b5edb1"
      ],
      "author": {
        "name": "Dan Williams",
        "email": "dan.j.williams@intel.com",
        "time": "Fri Aug 06 18:01:59 2010 -0700"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Sun Aug 08 21:20:17 2010 +1000"
      },
      "message": "md: move revalidate_disk() back outside open_mutex\n\nCommit b821eaa5 \"md: remove -\u003echanged and related code\" moved\nrevalidate_disk() under open_mutex, and lockdep noticed.\n\n[ INFO: possible circular locking dependency detected ]\n2.6.32-mdadm-locking #1\n-------------------------------------------------------\nmdadm/3640 is trying to acquire lock:\n (\u0026bdev-\u003ebd_mutex){+.+.+.}, at: [\u003cffffffff811acecb\u003e] revalidate_disk+0x5b/0x90\n\nbut task is already holding lock:\n (\u0026mddev-\u003eopen_mutex){+.+...}, at: [\u003cffffffffa055e07a\u003e] do_md_stop+0x4a/0x4d0 [md_mod]\n\nwhich lock already depends on the new lock.\n\nIt is suitable for 2.6.35.x\n\nCc: \u003cstable@kernel.org\u003e\nReported-by: Przemyslaw Czarnowski \u003cprzemyslaw.hawrylewicz.czarnowski@intel.com\u003e\nSigned-off-by: Dan Williams \u003cdan.j.williams@intel.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "6e9624b8caec290d28b4c6d9ec75749df6372b87",
      "tree": "47225b544e1da82742795553dc4e8aa70c17afdc",
      "parents": [
        "8a6cfeb6deca3a8fefd639d898b0d163c0b5d368"
      ],
      "author": {
        "name": "Arnd Bergmann",
        "email": "arnd@arndb.de",
        "time": "Sat Aug 07 18:25:34 2010 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jaxboe@fusionio.com",
        "time": "Sat Aug 07 18:25:34 2010 +0200"
      },
      "message": "block: push down BKL into .open and .release\n\nThe open and release block_device_operations are currently\ncalled with the BKL held. In order to change that, we must\nfirst make sure that all drivers that currently rely\non this have no regressions.\n\nThis blindly pushes the BKL into all .open and .release\noperations for all block drivers to prepare for the\nnext step. The drivers can subsequently replace the BKL\nwith their own locks or remove it completely when it can\nbe shown that it is not needed.\n\nThe functions blkdev_get and blkdev_put are the only\nremaining users of the big kernel lock in the block\nlayer, besides a few uses in the ioctl code, none\nof which need to serialize with blkdev_{get,put}.\n\nMost of these two functions is also under the protection\nof bdev-\u003ebd_mutex, including the actual calls to\n-\u003eopen and -\u003erelease, and the common code does not\naccess any global data structures that need the BKL.\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nAcked-by: Christoph Hellwig \u003chch@infradead.org\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n"
    },
    {
      "commit": "00fff26539bfe3fad21c164fc4002d9ede056fb0",
      "tree": "4909c8eed03133b1d46f689e465ed1f579b8e282",
      "parents": [
        "afc23068103ccfbf1917eb2a007bc15ab5418cc9"
      ],
      "author": {
        "name": "FUJITA Tomonori",
        "email": "fujita.tomonori@lab.ntt.co.jp",
        "time": "Sat Jul 03 17:45:40 2010 +0900"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jaxboe@fusionio.com",
        "time": "Sat Aug 07 18:24:15 2010 +0200"
      },
      "message": "block: remove q-\u003eprepare_flush_fn completely\n\nThis removes q-\u003eprepare_flush_fn completely (changes the\nblk_queue_ordered API).\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nReviewed-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n"
    },
    {
      "commit": "144d6ed551ce430084489b198826c89bac5680dc",
      "tree": "78b59ca5c4487784bfc2a16bcd91c0cb41631f8a",
      "parents": [
        "98d8c8f40ed72d997e50bc107a5cc1a6cee19e76"
      ],
      "author": {
        "name": "FUJITA Tomonori",
        "email": "fujita.tomonori@lab.ntt.co.jp",
        "time": "Sat Jul 03 17:45:37 2010 +0900"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jaxboe@fusionio.com",
        "time": "Sat Aug 07 18:24:14 2010 +0200"
      },
      "message": "dm: stop using q-\u003eprepare_flush_fn\n\nuse REQ_FLUSH flag instead.\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nCc: Alasdair G Kergon \u003cagk@redhat.com\u003e\nReviewed-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n"
    },
    {
      "commit": "7b6d91daee5cac6402186ff224c3af39d79f4a0e",
      "tree": "b1518cf0b6c301178e0a320f80610cd5b3aa7625",
      "parents": [
        "33659ebbae262228eef4e0fe990f393d1f0ed941"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Sat Aug 07 18:20:39 2010 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jaxboe@fusionio.com",
        "time": "Sat Aug 07 18:20:39 2010 +0200"
      },
      "message": "block: unify flags for struct bio and struct request\n\nRemove the current bio flags and reuse the request flags for the bio, too.\nThis allows to more easily trace the type of I/O from the filesystem\ndown to the block driver.  There were two flags in the bio that were\nmissing in the requests:  BIO_RW_UNPLUG and BIO_RW_AHEAD.  Also I\u0027ve\nrenamed two request flags that had a superflous RW in them.\n\nNote that the flags are in bio.h despite having the REQ_ name - as\nblkdev.h includes bio.h that is the only way to go for now.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n"
    },
    {
      "commit": "33659ebbae262228eef4e0fe990f393d1f0ed941",
      "tree": "fcb537f09359c8dad3a6f6e16dc4319562dc42cc",
      "parents": [
        "7e005f79791dcd58436c88ded4a7f5aed1b82147"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Sat Aug 07 18:17:56 2010 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jaxboe@fusionio.com",
        "time": "Sat Aug 07 18:17:56 2010 +0200"
      },
      "message": "block: remove wrappers for request type/flags\n\nRemove all the trivial wrappers for the cmd_type and cmd_flags fields in\nstruct requests.  This allows much easier grepping for different request\ntypes instead of unwinding through macros.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n"
    },
    {
      "commit": "51e9ac77035a3dfcb6fc0a88a0d80b6f99b5edb1",
      "tree": "94167223c5711c47169db672a0ec0d23a36208b9",
      "parents": [
        "69e51b449d383e97b1b9f890f8378c96e9e17346"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Sat Aug 07 21:17:00 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Sat Aug 07 21:17:00 2010 +1000"
      },
      "message": "md/raid10: fix deadlock with unaligned read during resync\n\nIf the \u0027bio_split\u0027 path in raid10-read is used while\nresync/recovery is happening it is possible to deadlock.\nFix this be elevating -\u003enr_waiting for the duration of both\nparts of the split request.\n\nThis fixes a bug that has been present since 2.6.22\nbut has only started manifesting recently for unknown reasons.\nIt is suitable for and -stable since then.\n\nReported-by:  Justin Bronder \u003cjsbronder@gentoo.org\u003e\nTested-by:  Justin Bronder \u003cjsbronder@gentoo.org\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\nCc: stable@kernel.org\n"
    },
    {
      "commit": "69e51b449d383e97b1b9f890f8378c96e9e17346",
      "tree": "650123fa4f08e8fa7f348a4ca875c59c129e5d84",
      "parents": [
        "e384e58549a2e9a83071ad80280c1a9053cfd84c"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 01 19:37:35 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 13:21:34 2010 +1000"
      },
      "message": "md/bitmap:  separate out loading a bitmap from initialising the structures.\n\ndm makes this distinction between -\u003ectr and -\u003eresume, so we need to\ntoo.\n\nAlso get the new bitmap_load to clear out the bitmap first, as this is\nmost consistent with the dm suspend/resume approach\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "e384e58549a2e9a83071ad80280c1a9053cfd84c",
      "tree": "805619143612ddc8cc71a45dd4522393c23a576f",
      "parents": [
        "ef4256733506f2459a0c436b62267d22a3f0cec6"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 01 19:37:34 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 13:21:34 2010 +1000"
      },
      "message": "md/bitmap: prepare for storing write-intent-bitmap via dm-dirty-log.\n\nThis allows md/raid5 to fully work as a dm target.\n\nNormally md uses a \u0027filemap\u0027 which contains a list of pages of bits\neach of which may be written separately.\ndm-log uses and all-or-nothing approach to writing the log, so\nwhen using a dm-log, -\u003efilemap is NULL and the flags normally stored\nin filemap_attr are stored in -\u003elogattrs instead.\n\n\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "ef4256733506f2459a0c436b62267d22a3f0cec6",
      "tree": "c73e1849052f56a8f6033498f7fbd65c6259c776",
      "parents": [
        "b63d7c2e29bf9cc94989806f2df0cfca4976b830"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 01 19:37:33 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 13:21:32 2010 +1000"
      },
      "message": "md/bitmap: optimise scanning of empty bitmaps.\n\nA bitmap is stored as one page per 2048 bits.\nIf none of the bits are set, the page is not allocated.\n\nWhen bitmap_get_counter finds that a page isn\u0027t allocate,\nit just reports that one bit work of space isn\u0027t flagged,\nrather than reporting that 2048 bits worth of space are\nunflagged.\nThis can cause searches for flagged bits (e.g. bitmap_close_sync)\nto do more work than is really necessary.\n\nSo change bitmap_get_counter (when creating) to report a number of\nblocks that more accurately reports the range of the device for which\nno counter currently exists.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "b63d7c2e29bf9cc94989806f2df0cfca4976b830",
      "tree": "fdb82527ca458769d3c7381375873931bfb23b19",
      "parents": [
        "5ff5afffe6527543866a47ffab12769427283917"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 01 19:37:33 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 13:21:32 2010 +1000"
      },
      "message": "md/bitmap: clean up plugging calls.\n\n1/ use md_unplug in bitmap.c as we will soon be using bitmaps under\n  arrays with no queue attached.\n\n2/ Don\u0027t bother plugging the queue when we set a bit in the bitmap.\n   The reason for this was to encourage as many bits as possible to\n   get set before we unplug and write stuff out.\n   However every personality already plugs the queue after\n   bitmap_startwrite either directly (raid1/raid10) or be setting\n   STRIPE_BIT_DELAY which causes the queue to be plugged later\n   (raid5).\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "5ff5afffe6527543866a47ffab12769427283917",
      "tree": "b37cf6ad3557ffada21aa05174bb055ea8e6c173",
      "parents": [
        "ac2f40be46ce6ab3bec4c8c297d6923f941741ce"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 01 19:37:32 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 13:21:31 2010 +1000"
      },
      "message": "md/bitmap: reduce dependence on sysfs.\n\nFor dm-raid45 we will want to use bitmaps in dm-targets which don\u0027t\nhave entries in sysfs, so cope with the mddev not living in sysfs.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "ac2f40be46ce6ab3bec4c8c297d6923f941741ce",
      "tree": "f1abc7d627edaaf450dbff3e68a902ff667a3c92",
      "parents": [
        "9f7c2220017771253d7d10b3cc017cb79eeac0fb"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 01 19:37:31 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 13:07:22 2010 +1000"
      },
      "message": "md/bitmap: white space clean up and similar.\n\nFixes some whitespace problems\nFixed some checkpatch.pl complaints.\nReplaced kmalloc ... memset(0), with kzalloc\nFixed an unlikely memory leak on an error path.\nReformatted a number of \u0027if/else\u0027 sets, sometimes\nreplacing goto with an else clause.\nRemoved some old comments and commented-out code.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "9f7c2220017771253d7d10b3cc017cb79eeac0fb",
      "tree": "91e387cc225d59ac975b53590c4a75e20770b5ce",
      "parents": [
        "252ac5221a71be72b7e7c7b7482af91e9c962e8c"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 12:04:13 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 12:53:10 2010 +1000"
      },
      "message": "md/raid5: export raid5 unplugging interface.\n\nAlso remove remaining accesses to -\u003equeue and -\u003egendisk when -\u003equeue\nis NULL (As it is in a DM target).\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "252ac5221a71be72b7e7c7b7482af91e9c962e8c",
      "tree": "cb9542b1391dabc136ce0052eb28948e77a6e2e5",
      "parents": [
        "2ac8740151b082f045e58010eb92560c3a23a0e9"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 01 19:37:29 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 12:53:08 2010 +1000"
      },
      "message": "md/plug: optionally use plugger to unplug an array during resync/recovery.\n\nIf an array doesn\u0027t have a \u0027queue\u0027 then md_do_sync cannot\nunplug it.\nIn that case it will have a \u0027plugger\u0027, so make that available\nto the mddev, and use it to unplug the array if needed.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "2ac8740151b082f045e58010eb92560c3a23a0e9",
      "tree": "39bff686e28f033339c6d1cf47042b6dc1586c2f",
      "parents": [
        "11d8a6e3719519fbc0e2c9d61b6fa931b84bf813"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 01 19:37:29 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 12:53:08 2010 +1000"
      },
      "message": "md/raid5: add simple plugging infrastructure.\n\nmd/raid5 uses the plugging infrastructure provided by the block layer\nand \u0027struct request_queue\u0027.  However when we plug raid5 under dm there\nis no request queue so we cannot use that.\n\nSo create a similar infrastructure that is much lighter weight and use\nit for raid5.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "11d8a6e3719519fbc0e2c9d61b6fa931b84bf813",
      "tree": "13a075d1423b2caa3d3264db0cf8cd378c545623",
      "parents": [
        "4a5add49951e698073011855d1a8a7306bc9308d"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 11:57:07 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 12:52:29 2010 +1000"
      },
      "message": "md/raid5: export is_congested test\n\nthe dm module will need this for dm-raid45.\n\nAlso only access -\u003equeue-\u003ebacking_dev_info-\u003econgested_fn\nif -\u003equeue actually exists.  It won\u0027t in a dm target.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "4a5add49951e698073011855d1a8a7306bc9308d",
      "tree": "91c098468b96b959f88e1e2a386c6e8911db7c09",
      "parents": [
        "768a418db102bb6aa6064e6090892b5c21ff1f9e"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 01 19:37:28 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 12:52:27 2010 +1000"
      },
      "message": "raid5: Don\u0027t set read-ahead when there is no queue\n\ndm-raid456 does not provide a \u0027queue\u0027 for raid5 to use,\nso we must make raid5 stop depending on the queue.\n\nFirst: read_ahead\ndm handles read-ahead adjustment fully in userspace, so\nsimply don\u0027t do any readahead adjustments if there is\nno queue.\n\nAlso re-arrange code slightly so all the accesses to -\u003equeue are\ntogether.\n\nFinally, move the blk_queue_merge_bvec function into the \u0027if\u0027 as\nthe -\u003esplit_io setting in dm-raid456 has the same effect.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "768a418db102bb6aa6064e6090892b5c21ff1f9e",
      "tree": "2f33acbf0ca542f43c8014201b539ae8f461ee5c",
      "parents": [
        "390ee602a142a93f2c7eb7bffee8e277058b8e0a"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 11:49:55 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 12:52:27 2010 +1000"
      },
      "message": "md: add support for raising dm events.\n\ndm uses scheduled work to raise events to user-space.\nSo allow md device to have work_structs and schedule them on an error.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "390ee602a142a93f2c7eb7bffee8e277058b8e0a",
      "tree": "33a23748dd5ff4ea76b34ed3e458c6da91185376",
      "parents": [
        "e8bb9a839a26f076379e9cb9f46a879d210156f1"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 01 19:37:27 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 12:52:27 2010 +1000"
      },
      "message": "md: export various start/stop interfaces\n\nexport entry points for starting and stopping md arrays.\nThis will be used by a module to make md/raid5 work under\ndm.\nAlso stop calling md_stop_writes from md_stop, as that won\u0027t\nwork well with dm - it will want to call the two separately.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "e8bb9a839a26f076379e9cb9f46a879d210156f1",
      "tree": "4da184e861cc5fea4967089711dfdc4fbb175f43",
      "parents": [
        "676e42d896ab6967859fabbb06f4e11b9615cbcf"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 01 19:37:26 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 12:52:27 2010 +1000"
      },
      "message": "md: split out md_rdev_init\n\nThis functionality will be needed separately in a subsequent patch, so\nsplit it into it\u0027s own exported function.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "676e42d896ab6967859fabbb06f4e11b9615cbcf",
      "tree": "efab4dffe8e930ec9ef51a5a4d4fd04ffe3749b1",
      "parents": [
        "f4be6b43f1ac60dff00ef0923ee43b0e08872947"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 01 19:37:26 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 12:52:27 2010 +1000"
      },
      "message": "md: be more careful setting MD_CHANGE_CLEAN\n\nWhen MD_CHANGE_CLEAN is set we might block in md_write_start.\nSo we should only set it when fairly sure that something will clear\nit.\n\nThere are two places where it is set so as to encourage a metadata\nupdate to record the progress of resync/recovery.  This should only\nbe done if the internal metadata update mechanisms are in use, which\ncan be tested by by inspecting \u0027-\u003epersistent\u0027.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "f4be6b43f1ac60dff00ef0923ee43b0e08872947",
      "tree": "b4fbfed60c0614d97a91638483058a133ddfcbf4",
      "parents": [
        "c41d4ac40df0d01bf9c383ff28f194d1df2d4fd9"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 01 19:37:25 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Jul 26 12:52:26 2010 +1000"
      },
      "message": "md/raid5: ensure we create a unique name for kmem_cache when mddev has no gendisk\n\nWe will shortly allow md devices with no gendisk (they are attached to\na dm-target instead).  That will cause mdname() to return \u0027mdX\u0027.\nThere is one place where mdname really needs to be unique: when\ncreating the name for a slab cache.\nSo in that case, if there is no gendisk, you the address of the mddev\nformatted in HEX to provide a unique name.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "c41d4ac40df0d01bf9c383ff28f194d1df2d4fd9",
      "tree": "0e22b3cc5e211a3f7dd4b6dea69d2afc1a173543",
      "parents": [
        "00bcb4ac7ee7e557a491b614219142cea0ef16f4"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 01 19:37:24 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Wed Jul 21 13:28:15 2010 +1000"
      },
      "message": "md/raid5: factor out code for changing size of stripe cache.\n\nSeparate the actual \u0027change\u0027 code from the sysfs interface\nso that it can eventually be called internally.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "00bcb4ac7ee7e557a491b614219142cea0ef16f4",
      "tree": "992cfa1d0e653aa3de8f0865c5e1a5a0fee4f935",
      "parents": [
        "d0c6f6258478e1dba532bf7c28e2cd6e1047d3a4"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 01 19:37:23 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Wed Jul 21 13:27:53 2010 +1000"
      },
      "message": "md: reduce dependence on sysfs.\n\nWe will want md devices to live as dm targets where sysfs is not\nvisible.  So allow md to not connect to sysfs.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "3424bf6a772cff606fc4bc24a3639c937afb547f",
      "tree": "be299de834e0f939d19665efec4cacadd74c4914",
      "parents": [
        "2f115882499f3e5eca33d1df07b8876cc752a1ff"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jun 17 17:48:26 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jun 24 13:36:04 2010 +1000"
      },
      "message": "md/raid5: don\u0027t include \u0027spare\u0027 drives when reshaping to fewer devices.\n\nThere are few situations where it would make any sense to add a spare\nwhen reducing the number of devices in an array, but it is\nconceivable:  A 6 drive RAID6 with two missing devices could be\nreshaped to a 5 drive RAID6, and a spare could become available\njust in time for the reshape, but not early enough to have been\nrecovered first.  \u0027freezing\u0027 recovery can make this easy to\ndo without any races.\n\nHowever doing such a thing is a bad idea.  md will not record the\npartially-recovered state of the \u0027spare\u0027 and when the reshape\nfinished it will think that the spare is still spare.\nEasiest way to avoid this confusion is to simply disallow it.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "2f115882499f3e5eca33d1df07b8876cc752a1ff",
      "tree": "8f9f1e723be1b4dd0e5fa7592a69245a704d8440",
      "parents": [
        "415e72d034c50520ddb7ff79e7d1792c1306f0c9"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jun 17 17:41:03 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jun 24 13:35:49 2010 +1000"
      },
      "message": "md/raid5: add a missing \u0027continue\u0027 in a loop.\n\nAs the comment says, the tail of this loop only applies to devices\nthat are not fully in sync, so if In_sync was set, we should avoid\nthe rest of the loop.\n\nThis bug will hardly ever cause an actual problem.  The worst it\ncan do is allow an array to be assembled that is dirty and degraded,\nwhich is not generally a good idea (without warning the sysadmin\nfirst).\n\nThis will only happen if the array is RAID4 or a RAID5/6 in an\nintermediate state during a reshape and so has one drive that is\nall \u0027parity\u0027 - no data - while some other device has failed.\n\nThis is certainly possible, but not at all common.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "415e72d034c50520ddb7ff79e7d1792c1306f0c9",
      "tree": "4558df940a15693e477af206b54423d98d9a04b1",
      "parents": [
        "674806d62fb02a22eea948c9f1b5e58e0947b728"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jun 17 17:25:21 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jun 24 13:35:39 2010 +1000"
      },
      "message": "md/raid5: Allow recovered part of partially recovered devices to be in-sync\n\nDuring a recovery of reshape the early part of some devices might be\nin-sync while the later parts are not.\nWe we know we are looking at an early part it is good to treat that\npart as in-sync for stripe calculations.\n\nThis is particularly important for a reshape which suffers device\nfailure.  Treating the data as in-sync can mean the difference between\ndata-safety and data-loss.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "674806d62fb02a22eea948c9f1b5e58e0947b728",
      "tree": "3367850a95d62713aa96acd2aecc493b66779398",
      "parents": [
        "70fffd0bfab1558a8c64c5e903dea1fb84cd9f6b"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Wed Jun 16 17:17:53 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jun 24 13:35:27 2010 +1000"
      },
      "message": "md/raid5: More careful check for \"has array failed\".\n\nWhen we are reshaping an array, the device failure combinations\nthat cause us to decide that the array as failed are more subtle.\n\nIn particular, any \u0027spare\u0027 will be fully in-sync in the section\nof the array that has already been reshaped, thus failures that\naffect only that section are less critical.\n\nSo encode this subtlety in a new function and call it as appropriate.\n\nThe case that showed this problem was a 4 drive RAID5 to 8 drive RAID6\nconversion where the last two devices failed.\nThis resulted in:\n\n  good good good good incomplete good good failed failed\n\nwhile converting a 5-drive RAID6 to 8 drive RAID5\nThe incomplete device causes the whole array to look bad,\nbad as it was actually good for the section that had been\nconverted to 8-drives, all the data was actually safe.\n\nReported-by: Terry Morris \u003ctbmorris@tbmorris.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "70fffd0bfab1558a8c64c5e903dea1fb84cd9f6b",
      "tree": "126f2ae8faa2cff8f9dde91cc7a07569ff9851cb",
      "parents": [
        "e4e11e385d1e5516ac76c956d6c25e6c2fa1b8d0"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Wed Jun 16 17:01:25 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jun 24 13:35:18 2010 +1000"
      },
      "message": "md: Don\u0027t update -\u003erecovery_offset when reshaping an array to fewer devices.\n\nWhen an array is reshaped to have fewer devices, the reshape proceeds\nfrom the end of the devices to the beginning.\n\nIf a device happens to be non-In_sync (which is possible but rare)\nwe would normally update the -\u003erecovery_offset as the reshape\nprogresses. However that would be wrong as the recover_offset records\nthat the early part of the device is in_sync, while in fact it would\nonly be the later part that is in_sync, and in any case the offset\nnumber would be measured from the wrong end of the device.\n\nRelatedly, if after a reshape a spare is discovered to not be\nrecoverred all the way to the end, not allow spare_active\nto incorporate it in the array.\n\nThis becomes relevant in the following sample scenario:\n\nA 4 drive RAID5 is converted to a 6 drive RAID6 in a combined\noperation.\nThe RAID5-\u003eRAID6 conversion will cause a 5 drive to be included as a\nspare, then the 5drive -\u003e 6drive reshape will effectively rebuild that\nspare as it progresses.  The 6th drive is treated as in_sync the whole\ntime as there is never any case that we might consider reading from\nit, but must not because there is no valid data.\n\nIf we interrupt this reshape part-way through and reverse it to return\nto a 5-drive RAID6 (or event a 4-drive RAID5), we don\u0027t want to update\nthe recovery_offset - as that would be wrong - and we don\u0027t want to\ninclude that spare as active in the 5-drive RAID6 when the reversed\nreshape completed and it will be mostly out-of-sync still.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "e4e11e385d1e5516ac76c956d6c25e6c2fa1b8d0",
      "tree": "978807084ae3136b20a12efab3720ecec861d0ff",
      "parents": [
        "049d6c1ef983c9ac43aa423dfd752071a5b0002d"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Wed Jun 16 16:45:16 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jun 24 13:35:02 2010 +1000"
      },
      "message": "md/raid5: avoid oops when number of devices is reduced then increased.\n\nThe entries in the stripe_cache maintained by raid5 are enlarged\nwhen we increased the number of devices in the array, but not\nshrunk when we reduce the number of devices.\nSo if entries are added after reducing the number of devices, we\nmuch ensure to initialise the whole entry, not just the part that\nis currently relevant.  Otherwise if we enlarge the array again,\nwe will reference uninitialised values.\n\nAs grow_buffers/shrink_buffer now want to use a count that is stored\nexplicity in the raid_conf, they should get it from there rather than\nbeing passed it as a parameter.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "049d6c1ef983c9ac43aa423dfd752071a5b0002d",
      "tree": "909db6119d7b96991fa724b633c2ee185474836d",
      "parents": [
        "001048a318d48e93cb6a1246f3b20335b2a7c855"
      ],
      "author": {
        "name": "Maciej Trela",
        "email": "maciej.trela@intel.com",
        "time": "Wed Jun 16 11:56:12 2010 +0100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jun 24 13:34:57 2010 +1000"
      },
      "message": "md: enable raid4-\u003eraid0 takeover\n\nOnly level 5 with layout\u003dPARITY_N can be taken over to raid0 now.\nLets allow level 4 either.\n\nSigned-off-by: Maciej Trela \u003cmaciej.trela@intel.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "001048a318d48e93cb6a1246f3b20335b2a7c855",
      "tree": "82a90465d46b9f495ceee52ef24dee9ada3a9827",
      "parents": [
        "f73ea87375a1b2bf6c0be82bb9a3cb9d5ee7a407"
      ],
      "author": {
        "name": "Maciej Trela",
        "email": "maciej.trela@intel.com",
        "time": "Wed Jun 16 11:55:14 2010 +0100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jun 24 13:34:45 2010 +1000"
      },
      "message": "md: clear layout after -\u003eraid0 takeover\n\nAfter takeover from raid5/10 -\u003e raid0 mddev-\u003elayout is not cleared.\n\nSigned-off-by: Maciej Trela \u003cmaciej.trela@intel.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "f73ea87375a1b2bf6c0be82bb9a3cb9d5ee7a407",
      "tree": "c6353ca45235a258cf7d72ecb1b29d6babfcd2fc",
      "parents": [
        "e93f68a1fc6244c05ad8fae28e75835ec74ab34e"
      ],
      "author": {
        "name": "Maciej Trela",
        "email": "maciej.trela@intel.com",
        "time": "Wed Jun 16 11:46:29 2010 +0100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jun 24 13:33:51 2010 +1000"
      },
      "message": "md: fix raid10 takeover: use new_layout for setup_conf\n\nUse mddev-\u003enew_layout in setup_conf.\nAlso use new_chunk, and don\u0027t set -\u003edegraded in takeover().  That\ngets set in run()\n\nSigned-off-by: Maciej Trela \u003cmaciej.trela@intel.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "e93f68a1fc6244c05ad8fae28e75835ec74ab34e",
      "tree": "d282978aac8f6fcec512be2a6e61287bbb6241b1",
      "parents": [
        "0544a21db02c1d8883158fd6f323364f830a120a"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Jun 15 09:36:03 2010 +0100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jun 24 13:33:24 2010 +1000"
      },
      "message": "md: fix handling of array level takeover that re-arranges devices.\n\nMost array level changes leave the list of devices largely unchanged,\npossibly causing one at the end to become redundant.\nHowever conversions between RAID0 and RAID10 need to renumber\nall devices (except 0).\n\nThis renumbering is currently being done in the -\u003erun method when the\nnew personality takes over.  However this is too late as the common\ncode in md.c might already have invalidated some of the devices if\nthey had a -\u003eraid_disk number that appeared to high.\n\nMoving it into the -\u003etakeover method is too early as the array is\nstill active at that time and wrong -\u003eraid_disk numbers could cause\nconfusion.\n\nSo add a -\u003enew_raid_disk field to mdk_rdev_s and use it to communicate\nthe new raid_disk number.\nNow the common code knows exactly which devices need to be renumbered,\nand which can be invalidated, and can do it all at a convenient time\nwhen the array is suspend.\nIt can also update some symlinks in sysfs which previously were not be\nupdated correctly.\n\nReported-by: Maciej Trela \u003cmaciej.trela@intel.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "0544a21db02c1d8883158fd6f323364f830a120a",
      "tree": "086c38e3c9132a8ecdee0ccbdd845ce2604caad9",
      "parents": [
        "f3b99be19ded511a1bf05a148276239d9f13eefa"
      ],
      "author": {
        "name": "Prasanna S. Panchamukhi",
        "email": "prasanna.panchamukhi@riverbed.com",
        "time": "Thu Jun 24 13:31:03 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jun 24 13:31:03 2010 +1000"
      },
      "message": "md: raid10: Fix null pointer dereference in fix_read_error()\n\nSuch NULL pointer dereference can occur when the driver was fixing the\nread errors/bad blocks and the disk was physically removed\ncausing a system crash. This patch check if the\nrcu_dereference() returns valid rdev before accessing it in fix_read_error().\n\nCc: stable@kernel.org\nSigned-off-by: Prasanna S. Panchamukhi \u003cprasanna.panchamukhi@riverbed.com\u003e\nSigned-off-by: Rob Becker \u003crbecker@riverbed.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "f3b99be19ded511a1bf05a148276239d9f13eefa",
      "tree": "c9e59617e67e7a43e38b5c41f3307d54f4279c13",
      "parents": [
        "7e27d6e778cd87b6f2415515d7127eba53fe5d02"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jun 24 13:31:03 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Jun 24 13:31:03 2010 +1000"
      },
      "message": "Restore partition detection of newly created md arrays.\n\nCommit  b821eaa572fd737faaf6928ba046e571526c36c6 broke partition\ndetection for md arrays.\n\nThe logic was almost right.  However if revalidate_disk is called\nwhen the device is not yet open, bdev-\u003ebd_disk won\u0027t be set, so the\nflush_disk() Call will not set bd_invalidated.\n\nSo when md_open is called we still need to ensure that\n-\u003ebd_invalidated gets set.  This is easily done with a call to\ncheck_disk_size_change in the place where the offending commit removed\ncheck_disk_change.  At the important times, the size will have changed\nfrom 0 to non-zero, so check_disk_size_change will set bd_invalidated.\n\nTested-by: Duncan \u003c1i5t5.duncan@cox.net\u003e\nReported-by: Duncan \u003c1i5t5.duncan@cox.net\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "55af6bb509d3ef2696faddd4a734bf024794b337",
      "tree": "4a5f3493957c5c7504b91bf90bedd828a26106c0",
      "parents": [
        "d882ba699dbdd2156891290c31c22dc13d6530e4"
      ],
      "author": {
        "name": "Akinobu Mita",
        "email": "akinobu.mita@gmail.com",
        "time": "Wed May 26 14:43:35 2010 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu May 27 09:12:48 2010 -0700"
      },
      "message": "md: convert cpu notifier to return encapsulate errno value\n\nBy the previous modification, the cpu notifier can return encapsulate\nerrno value.  This converts the cpu notifiers for raid5.\n\nSigned-off-by: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nCc: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e8bebe2f71d26871b0970ae1d9cf0ed3cdd9569d",
      "tree": "c0d82cbd11daaf579b74121c6641d58947091094",
      "parents": [
        "6109e2ce2600e2db26cd0424bb9c6ed019723288",
        "82f3952c02add60b15eea9151d4d99b6b82066c6"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri May 21 19:37:45 2010 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri May 21 19:37:45 2010 -0700"
      },
      "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (69 commits)\n  fix handling of offsets in cris eeprom.c, get rid of fake on-stack files\n  get rid of home-grown mutex in cris eeprom.c\n  switch ecryptfs_write() to struct inode *, kill on-stack fake files\n  switch ecryptfs_get_locked_page() to struct inode *\n  simplify access to ecryptfs inodes in -\u003ereadpage() and friends\n  AFS: Don\u0027t put struct file on the stack\n  Ban ecryptfs over ecryptfs\n  logfs: replace inode uid,gid,mode initialization with helper function\n  ufs: replace inode uid,gid,mode initialization with helper function\n  udf: replace inode uid,gid,mode init with helper\n  ubifs: replace inode uid,gid,mode initialization with helper function\n  sysv: replace inode uid,gid,mode initialization with helper function\n  reiserfs: replace inode uid,gid,mode initialization with helper function\n  ramfs: replace inode uid,gid,mode initialization with helper function\n  omfs: replace inode uid,gid,mode initialization with helper function\n  bfs: replace inode uid,gid,mode initialization with helper function\n  ocfs2: replace inode uid,gid,mode initialization with helper function\n  nilfs2: replace inode uid,gid,mode initialization with helper function\n  minix: replace inode uid,gid,mode init with helper\n  ext4: replace inode uid,gid,mode init with helper\n  ...\n\nTrivial conflict in fs/fs-writeback.c (mark bitfields unsigned)\n"
    },
    {
      "commit": "19fdb9eefb21b72edbc365b838502780c392bad6",
      "tree": "deae04c48532d6eab64ed4b0396737bb854b5506",
      "parents": [
        "be6800a73aa2f3dc14744c3b80e676d189789f04",
        "3ff195b011d7decf501a4d55aeed312731094796"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Sat May 22 08:31:36 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Sat May 22 08:31:36 2010 +1000"
      },
      "message": "Merge commit \u00273ff195b011d7decf501a4d55aeed312731094796\u0027 into for-linus\n\nConflicts:\n\tdrivers/md/md.c\n\n- Resolved conflict in md_update_sb\n- Added extra \u0027NULL\u0027 arg to new instance of sysfs_get_dirent.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "8018ab057480974e7f26a387bf4ce040e9a5f6f1",
      "tree": "98298180bf60797a028eca4f24234dc67d38a9d4",
      "parents": [
        "e970a573ce30a3976234dcfb67906c164b0df9ee"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Mon Mar 22 17:32:25 2010 +0100"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Fri May 21 18:31:21 2010 -0400"
      },
      "message": "sanitize vfs_fsync calling conventions\n\nNow that the last user passing a NULL file pointer is gone we can remove\nthe redundant dentry argument and associated hacks inside vfs_fsynmc_range.\n\nThe next step will be removig the dentry argument from -\u003efsync, but given\nthe luck with the last round of method prototype changes I\u0027d rather\ndefer this until after the main merge window.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "3ff195b011d7decf501a4d55aeed312731094796",
      "tree": "8cfdc330abbf82893955f2d7d6e96efee81bfd7c",
      "parents": [
        "bc451f2058238013e1cdf4acd443c01734d332f0"
      ],
      "author": {
        "name": "Eric W. Biederman",
        "email": "ebiederm@xmission.com",
        "time": "Tue Mar 30 11:31:26 2010 -0700"
      },
      "committer": {
        "name": "Greg Kroah-Hartman",
        "email": "gregkh@suse.de",
        "time": "Fri May 21 09:37:31 2010 -0700"
      },
      "message": "sysfs: Implement sysfs tagged directory support.\n\nThe problem.  When implementing a network namespace I need to be able\nto have multiple network devices with the same name.  Currently this\nis a problem for /sys/class/net/*, /sys/devices/virtual/net/*, and\npotentially a few other directories of the form /sys/ ... /net/*.\n\nWhat this patch does is to add an additional tag field to the\nsysfs dirent structure.  For directories that should show different\ncontents depending on the context such as /sys/class/net/, and\n/sys/devices/virtual/net/ this tag field is used to specify the\ncontext in which those directories should be visible.  Effectively\nthis is the same as creating multiple distinct directories with\nthe same name but internally to sysfs the result is nicer.\n\nI am calling the concept of a single directory that looks like multiple\ndirectories all at the same path in the filesystem tagged directories.\n\nFor the networking namespace the set of directories whose contents I need\nto filter with tags can depend on the presence or absence of hotplug\nhardware or which modules are currently loaded.  Which means I need\na simple race free way to setup those directories as tagged.\n\nTo achieve a reace free design all tagged directories are created\nand managed by sysfs itself.\n\nUsers of this interface:\n- define a type in the sysfs_tag_type enumeration.\n- call sysfs_register_ns_types with the type and it\u0027s operations\n- sysfs_exit_ns when an individual tag is no longer valid\n\n- Implement mount_ns() which returns the ns of the calling process\n  so we can attach it to a sysfs superblock.\n- Implement ktype.namespace() which returns the ns of a syfs kobject.\n\nEverything else is left up to sysfs and the driver layer.\n\nFor the network namespace mount_ns and namespace() are essentially\none line functions, and look to remain that.\n\nTags are currently represented a const void * pointers as that is\nboth generic, prevides enough information for equality comparisons,\nand is trivial to create for current users, as it is just the\nexisting namespace pointer.\n\nThe work needed in sysfs is more extensive.  At each directory\nor symlink creating I need to check if the directory it is being\ncreated in is a tagged directory and if so generate the appropriate\ntag to place on the sysfs_dirent.  Likewise at each symlink or\ndirectory removal I need to check if the sysfs directory it is\nbeing removed from is a tagged directory and if so figure out\nwhich tag goes along with the name I am deleting.\n\nCurrently only directories which hold kobjects, and\nsymlinks are supported.  There is not enough information\nin the current file attribute interfaces to give us anything\nto discriminate on which makes it useless, and there are\nno potential users which makes it an uninteresting problem\nto solve.\n\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nSigned-off-by: Benjamin Thery \u003cbenjamin.thery@bull.net\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n\n"
    },
    {
      "commit": "be6800a73aa2f3dc14744c3b80e676d189789f04",
      "tree": "7db76b4488ad45e923223748c41fa8a61a09aa25",
      "parents": [
        "a8707c08f4f718bb0ed65499d3f43201f6e41455"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 10:17:09 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:28:01 2010 +1000"
      },
      "message": "md: don\u0027t insist on valid event count for spare devices.\n\nDevices which know that they are spares do not really need to have\nan event count that matches the rest of the array, so there are no\ndata-in-sync issues. It is enough that the uuid matches.\nSo remove the requirement that the event count is up-to-date.\n\nWe currently still write out and event count on spares, but this\nallows us in a year or 3 to stop doing that completely.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "a8707c08f4f718bb0ed65499d3f43201f6e41455",
      "tree": "8fc3ea9ea924ebc4f28012c11f3c1e70ad60bcb2",
      "parents": [
        "7b0bb5368a7195606eca475d9f4e291ab7227052"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 09:28:43 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:28:01 2010 +1000"
      },
      "message": "md: simplify updating of event count to sometimes avoid updating spares.\n\nWhen updating the event count for a simple clean \u003c-\u003e dirty transition,\nwe try to avoid updating the spares so they can safely spin-down.\nAs the event_counts across an array must be +/- 1, this means\ndecrementing the event_count on a dirty-\u003eclean transition.\nThis is not always safe and we have to avoid the unsafe time.\nWe current do this with a misguided idea about it being safe or\nnot depending on whether the event_count is odd or even.  This\napproach only works reliably in a few common instances, but easily\nfalls down.\n\nSo instead, simply keep internal state concerning whether it is safe\nor not, and always assume it is not safe when an array is first\nassembled.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "7b0bb5368a7195606eca475d9f4e291ab7227052",
      "tree": "2c5b9e5269fb585d0386cf931a0d154bee5d875f",
      "parents": [
        "75a73a29e520a6ce982b0da6dd8b7560ae3faa90"
      ],
      "author": {
        "name": "Gabriele A. Trombetti",
        "email": "g.trombetti.lkrnl1213@logicschema.com",
        "time": "Wed Apr 28 11:51:17 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:28:00 2010 +1000"
      },
      "message": "md/raid6: Fix raid-6 read-error correction in degraded state\n\nFix: Raid-6 was not trying to correct a read-error when in\nsingly-degraded state and was instead dropping one more device, going to\ndoubly-degraded state. This patch fixes this behaviour.\n\nTested-by: Janos Haar \u003cjanos.haar@netcenter.hu\u003e\nSigned-off-by: Gabriele A. Trombetti \u003cg.trombetti.lkrnl1213@logicschema.com\u003e\nReported-by: Janos Haar \u003cjanos.haar@netcenter.hu\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\nCc: stable@kernel.org\n"
    },
    {
      "commit": "75a73a29e520a6ce982b0da6dd8b7560ae3faa90",
      "tree": "1bcb14b69e2ae7673bf29be6b3f27aee6e896070",
      "parents": [
        "af3a2cd6b8a479345786e7fe5e199ad2f6240e56"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Fri May 07 19:44:26 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:28:00 2010 +1000"
      },
      "message": "md: restore ability of spare drives to spin down.\n\nSome time ago we stopped the clean/active metadata updates\nfrom being written to a \u0027spare\u0027 device in most cases so that\nit could spin down and say spun down.  Device failure/removal\netc are still recorded on spares.\n\nHowever commit 51d5668cb2e3fd1827a55 broke this 50% of the time,\ndepending on whether the event count is even or odd.\nThe change log entry said:\n\n   This means that the alignment between \u0027odd/even\u0027 and\n    \u0027clean/dirty\u0027 might take a little longer to attain,\n\nhow ever the code makes no attempt to create that alignment, so it\ncould take arbitrarily long.\n\nSo when we find that clean/dirty is not aligned with odd/even,\nforce a second metadata-update immediately.  There are already cases\nwhere a second metadata-update is needed immediately (e.g. when a\ndevice fails during the metadata update).  We just piggy-back on that.\n\nReported-by: Joe Bryant \u003ctenminjoe@yahoo.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\nCc: stable@kernel.org\n"
    },
    {
      "commit": "af3a2cd6b8a479345786e7fe5e199ad2f6240e56",
      "tree": "10690853d80455e69bcc0d027ad6c8b9c7951332",
      "parents": [
        "2dc40f80945ac3e5ec05c3a6c75baf09b13cee51"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Sat May 08 08:20:17 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:28:00 2010 +1000"
      },
      "message": "md: Fix read balancing in RAID1 and RAID10 on drives \u003e 2TB\n\nread_balance uses a \"unsigned long\" for a sector number which\nwill get truncated beyond 2TB.\nThis will cause read-balancing to be non-optimal, and can cause\ndata to be read from the \u0027wrong\u0027 branch during a resync.  This has a\nvery small chance of returning wrong data.\n\nReported-by: Jordan Russell \u003cjr-list-2010@quo.to\u003e\nCc: stable@kernel.org\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "2dc40f80945ac3e5ec05c3a6c75baf09b13cee51",
      "tree": "b1f171090517f548e7c17302cef12a77aa9563b9",
      "parents": [
        "b5a20961f3479dda48bdc340354ee5469997839d"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon May 03 15:12:04 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:59 2010 +1000"
      },
      "message": "md/linear: standardise all printk messages\n\n  md/linear:mdname:\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "b5a20961f3479dda48bdc340354ee5469997839d",
      "tree": "19eb94b00531621512364a544108016ab533f47d",
      "parents": [
        "128595ed6ff2c7358ae253a560d47a0af463bc99"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon May 03 15:06:27 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:59 2010 +1000"
      },
      "message": "md/raid0: tidy up printk messages.\n\nAll messages now start\n   md/raid0:md-device-name:\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "128595ed6ff2c7358ae253a560d47a0af463bc99",
      "tree": "6cadab1e71eb7e9881e33fcfd63556364ccd7517",
      "parents": [
        "9dd1e2faf72f79a2af9dcbd059473c06648726c2"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon May 03 14:47:14 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:59 2010 +1000"
      },
      "message": "md/raid10: tidy up printk messages.\n\nAll raid10 printk messages now start\n   md/raid10:md-device-name:\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "9dd1e2faf72f79a2af9dcbd059473c06648726c2",
      "tree": "a3b400d49671930f6d6ff0b9d5890e598af7a94f",
      "parents": [
        "0c55e02259115c151e4835dd417cf41467bb02e2"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon May 03 14:30:35 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:59 2010 +1000"
      },
      "message": "md/raid1: improve printk messages\n\nMake sure the array name is included in a uniform way in all printk\nmessages.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "0c55e02259115c151e4835dd417cf41467bb02e2",
      "tree": "bcc12cd6c9b2d40b8bc31a4d85cae13103168493",
      "parents": [
        "08fb730ca346ff16598ef31911c88fbca6133bf5"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon May 03 14:09:02 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:58 2010 +1000"
      },
      "message": "md/raid5: improve consistency of error messages.\n\nMany \u0027printk\u0027 messages from the raid456 module mention \u0027raid5\u0027 even\nthough it may be a \u0027raid6\u0027 or even \u0027raid4\u0027 array.  This can cause\nconfusion.\nAlso the actual array name is not always reported and when it is\nit is not reported consistently.\n\nSo change all the messages to start:\n    md/raid:%s:\nwhere \u0027%s\u0027 becomes e.g. md3 to identify the particular array.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "08fb730ca346ff16598ef31911c88fbca6133bf5",
      "tree": "a567e87dc6a13bcc5708e1ed4909738ba9d642db",
      "parents": [
        "f2859af6716ce99cac7f35c5a0c6b7fed346312f"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon May 03 13:16:56 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:58 2010 +1000"
      },
      "message": "md: remove EXPERIMENTAL designation from RAID10\n\nRAID10 has been available for quite a while now and is quite well\ntested, so we can remove the EXPERIMENTAL designation.\n\nReported-by: Eric MSP Veith \u003ceveith@wwweb-library.net\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "f2859af6716ce99cac7f35c5a0c6b7fed346312f",
      "tree": "37d1af49ce710098bc35d45c7a9aec6e6f8eb5d9",
      "parents": [
        "bb7f8d2217d8753ab5008c78f16697d9e697d570"
      ],
      "author": {
        "name": "Dan Williams",
        "email": "dan.j.williams@intel.com",
        "time": "Sun May 02 10:04:16 2010 -0700"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:58 2010 +1000"
      },
      "message": "md: allow integers to be passed to md/level\n\ne.g. allow md to interpret \u0027echo 4 \u003e md/level\u0027 as a request for raid4.\n\nSigned-off-by: Dan Williams \u003cdan.j.williams@intel.com\u003e\n"
    },
    {
      "commit": "bb7f8d2217d8753ab5008c78f16697d9e697d570",
      "tree": "5717c254192b171215bbb8358f68646c3b2e1326",
      "parents": [
        "f1b29bcae116409db5e543622aadab43041c9ae9"
      ],
      "author": {
        "name": "Dan Williams",
        "email": "dan.j.williams@intel.com",
        "time": "Sat May 01 18:14:57 2010 -0700"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:57 2010 +1000"
      },
      "message": "md: notify mdstat waiters of level change\n\nLevel modifications change the output of mdstat.  The mdmon manager\nthread is interested in these events for external metadata management.\n\nSigned-off-by: Dan Williams \u003cdan.j.williams@intel.com\u003e\n"
    },
    {
      "commit": "f1b29bcae116409db5e543622aadab43041c9ae9",
      "tree": "05dff62e747d8f0c91d6bd38ce900c0083dcbc98",
      "parents": [
        "e555190d82c0f58e825e3cbd9e6ebe2e7ac713bd"
      ],
      "author": {
        "name": "Dan Williams",
        "email": "dan.j.williams@intel.com",
        "time": "Sat May 01 18:09:05 2010 -0700"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:57 2010 +1000"
      },
      "message": "md/raid4: permit raid0 takeover\n\nFor consistency allow raid4 to takeover raid0 in addition to raid5 (with a\nraid4 layout).\n\nSigned-off-by: Dan Williams \u003cdan.j.williams@intel.com\u003e\n"
    },
    {
      "commit": "e555190d82c0f58e825e3cbd9e6ebe2e7ac713bd",
      "tree": "ea9c8e548c4d5eb5fc903bab05af3bda4192ed00",
      "parents": [
        "d754c5ae1ff76b20d3ecde8ad666d7865eada8ae"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Wed Mar 31 11:21:44 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:57 2010 +1000"
      },
      "message": "md/raid1: delay reads that could overtake behind-writes.\n\nWhen a raid1 array is configured to support write-behind\non some devices, it normally only reads from other devices.\nIf all devices are write-behind (because the rest have failed)\nit is possible for a read request to be serviced before a\nbehind-write request, which would appear as data corruption.\n\nSo when forced to read from a WriteMostly device, wait for any\nwrite-behind to complete, and don\u0027t start any more behind-writes.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "d754c5ae1ff76b20d3ecde8ad666d7865eada8ae",
      "tree": "60523d76c5e437ea39ce158295d75ea4247f70e1",
      "parents": [
        "9e35b99c7efacfddc748c89a0c53b1122b0ee72c"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Wed Apr 07 12:14:43 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:56 2010 +1000"
      },
      "message": "md/raid1: fix confusing \u0027redirect sector\u0027 message.\n\nThis message seems to suggest the named device is the one on which a\nread failed, however it is actually the device that the read will be\nredirected to.\nSo make the message a little clearer.\n\nReported-by: Tim Burgess \u003cozburgess@gmail.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n\n"
    },
    {
      "commit": "9e35b99c7efacfddc748c89a0c53b1122b0ee72c",
      "tree": "5ef48fad2c5de4269cdacdb83a01e41e64683ae5",
      "parents": [
        "fafd7fb052182e087b5a3c6c408e4ac8c2b5fa14"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Apr 06 14:23:02 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:56 2010 +1000"
      },
      "message": "md: don\u0027t unregister the thread in mddev_suspend\n\nThis is\n - unnecessary because mddev_suspend is always followed by a call to\n   -\u003estop, and each -\u003estop unregisters the thread, and\n - a problem as it makes it awkwards to suspend and then resume a\n   device as we will want later.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "fafd7fb052182e087b5a3c6c408e4ac8c2b5fa14",
      "tree": "0071eab25a38b69a792fb25c3efffbd98609fc18",
      "parents": [
        "21a52c6d05c15f862797736393915bfa8cd40ee9"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Apr 01 15:55:30 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:55 2010 +1000"
      },
      "message": "md: factor out init code for an mddev\n\nThis is a simple factorisation that makes mddev_find easier to read.\n\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "21a52c6d05c15f862797736393915bfa8cd40ee9",
      "tree": "44ffb633d209457979177a52132761a368fcb976",
      "parents": [
        "cca9cf90c504d98644ace52c474770970729f0eb"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Apr 01 15:02:13 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:55 2010 +1000"
      },
      "message": "md: pass mddev to make_request functions rather than request_queue\n\nWe used to pass the personality make_request function direct\nto the block layer so the first argument had to be a queue.\nBut now we have the intermediary md_make_request so it makes\nat lot more sense to pass a struct mddev_s.\nIt makes it possible to have an mddev without its own queue too.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "cca9cf90c504d98644ace52c474770970729f0eb",
      "tree": "d825b55dc2f8742b210479d2af1804b5b31dd791",
      "parents": [
        "a4bd82d0d03b1485975579f131ccfd0aad6b7d6e"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Apr 01 12:08:16 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:54 2010 +1000"
      },
      "message": "md: call md_stop_writes from md_stop\n\nThis moves the call to the other side of set_readonly, but that should\nnot be an issue.\nThis encapsulates in \u0027md_stop\u0027 all of the functionality for internally\nstopping the array, leaving all the interactions with externalities\n(sysfs, request_queue, gendisk) in do_md_stop.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "a4bd82d0d03b1485975579f131ccfd0aad6b7d6e",
      "tree": "7e560963b71f26fc487a1cd932f4b684bd3b3e62",
      "parents": [
        "a047e125403112ceb4d41e68307a2e7498ddba4e"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Mar 29 13:23:10 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:54 2010 +1000"
      },
      "message": "md: split md_set_readonly out of do_md_stop\n\nUsing do_md_stop to set an array to read-only is a little confusing.\nNow most of the common code has been factored out, split\nmd_set_readonly off in to a separate function.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "a047e125403112ceb4d41e68307a2e7498ddba4e",
      "tree": "392928f408e3a6a2d40a7c3b6a178fbb3c411e06",
      "parents": [
        "6177b472ab14e1ac88896960370dd54ba577d926"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Mar 29 12:07:53 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:54 2010 +1000"
      },
      "message": "md: factor md_stop_writes out of do_md_stop.\n\nFurther refactoring of do_md_stop.\nThis one requires some explanation as it takes code from different\nplaces in do_md_stop, so some re-ordering happens.\n\nWe only get into this part of do_md_stop if there are no active opens\nof the device, so no writes can be happening and the device must have\nbeen flushed.  In md_stop_writes we want to stop any internal sources\nof writes - i.e. resync - and flush out the metadata.\n\nThe only code that was previously before some of this code is\ncode to clean up the queue, the mddev, the gendisk, or sysfs, all\nof which is probably better after code that makes active changes (i.e.\ntriggers writes).\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "6177b472ab14e1ac88896960370dd54ba577d926",
      "tree": "387eec24b0ac82e028edfdd77d8b425077ca0bfb",
      "parents": [
        "fe60b0142813002be16dfae28780d9779ee22473"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Mar 29 11:37:13 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:53 2010 +1000"
      },
      "message": "md: start to refactor do_md_stop\n\ndo_md_stop is large and clunky, so hard to understand.\n\nThis is a first step of refactoring, pulling two simple\nsub-functions out.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "fe60b0142813002be16dfae28780d9779ee22473",
      "tree": "1b2337036bbb30857531cd2d54729d38fdd75a3a",
      "parents": [
        "b821eaa572fd737faaf6928ba046e571526c36c6"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Mar 29 11:10:42 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:53 2010 +1000"
      },
      "message": "md: factor do_md_run to separate accesses to -\u003egendisk\n\nAs part of relaxing the binding between an mddev and gendisk,\nwe separate do_md_run into two functions.\n  md_run does all the work internal to md\n  do_md_run calls md_run and makes and changes to gendisk\n     that are required.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "b821eaa572fd737faaf6928ba046e571526c36c6",
      "tree": "0db462a3c7da3dbf42d28e2483a27d78839b4589",
      "parents": [
        "49ce6cea85fb8d25ee59486c919406e9cecf1762"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Mar 29 11:18:15 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:53 2010 +1000"
      },
      "message": "md: remove -\u003echanged and related code.\n\nWe set -\u003echanged to 1 and call check_disk_change at the end\nof md_open so that bd_invalidated would be set and thus\npartition rescan would happen appropriately.\n\nNow that we call revalidate_disk directly, which sets bd_invalidates,\nthat indirection is no longer needed and can be removed.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "49ce6cea85fb8d25ee59486c919406e9cecf1762",
      "tree": "36ff1804090759c0b43593feb8880b15121d13e9",
      "parents": [
        "490773268cf64f68da2470e07b52c7944da6312d"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Mar 29 10:51:42 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:52 2010 +1000"
      },
      "message": "md: don\u0027t reference gendisk in getgeo\n\nUsing -\u003earray_sectors rather than get_capacity() is more\ndirect and is a step towards relaxing the tight connection\nbetween mddev and gendisk.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "490773268cf64f68da2470e07b52c7944da6312d",
      "tree": "d394aafa7203c316db6b63f128b8894e18993fca",
      "parents": [
        "2b7f22284d71975e37a82db154386348eec0e52c"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Mar 25 16:20:56 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:52 2010 +1000"
      },
      "message": "md: move io accounting out of personalities into md_make_request\n\nWhile I generally prefer letting personalities do as much as possible,\ngiven that we have a central md_make_request anyway we may as well use\nit to simplify code.\nAlso this centralises knowledge of -\u003egendisk which will help later.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "2b7f22284d71975e37a82db154386348eec0e52c",
      "tree": "761ac50d75348c43e38745f10b824efa5c3388cd",
      "parents": [
        "a78d38a1a16c8e009aa512caa71d483757fefc1c"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Mar 25 16:06:03 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:50 2010 +1000"
      },
      "message": "md/raid5: small tidyup in raid5_align_endio\n\nDiving through -\u003equeue to find mddev is unnecessarily complex - there\nis an easier path to finding mddev, so use that.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "a78d38a1a16c8e009aa512caa71d483757fefc1c",
      "tree": "028ba0f1d0d6a18b2710ece1f24639f9ff72e3d2",
      "parents": [
        "5cac7861b2de95a1f714ebdc652813abd0afcc73"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Mar 22 16:53:49 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:49 2010 +1000"
      },
      "message": "md: add support for raid5 to raid4 conversion\n\nThis is unlikely to be wanted, but we may as well provide it\nfor completeness.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n\n"
    },
    {
      "commit": "5cac7861b2de95a1f714ebdc652813abd0afcc73",
      "tree": "552bc6200817c6872f403ab54a50e8c5f7a594fa",
      "parents": [
        "233fca36bb439eadcad28500b5139fed7c64a0ae"
      ],
      "author": {
        "name": "Maciej Trela",
        "email": "Maciej.Trela@intel.com",
        "time": "Wed Apr 14 17:17:39 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:49 2010 +1000"
      },
      "message": "md: notify level changes through sysfs.\n\nLevel changes can be very significant, so make sure\nto notify them via sysfs.\n\nSigned-off-by: Maciej Trela \u003cmaciej.trela@intel.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "233fca36bb439eadcad28500b5139fed7c64a0ae",
      "tree": "dfaec050a24564da4d05ec0e21cd814375eae1e8",
      "parents": [
        "b71031076e1169e89bdac1b245ad1488587e4730"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Wed Apr 14 17:02:09 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:49 2010 +1000"
      },
      "message": "md: Relax checks on -\u003emax_disks when external metadata handling is used.\n\nWhen metadata is being managed by user-space, md doesn\u0027t know\nwhat the maximum number of devices allowed in an array is\nso -\u003emax_disks is 0.  In this case we should allow any (+ve)\nnumber of disks.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "b71031076e1169e89bdac1b245ad1488587e4730",
      "tree": "b67a3ffc0263a7e380a9545ca066aea7cc46003b",
      "parents": [
        "dab8b29248b3f14f456651a2a6ee9b8fd16d1b3c"
      ],
      "author": {
        "name": "Maciej Trela",
        "email": "Maciej.Trela@intel.com",
        "time": "Wed Apr 14 16:58:16 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:48 2010 +1000"
      },
      "message": "md: Correctly handle device removal via sysfs\n\nWriting \"none\" to \"../md/dev-xx/slot\" removes that device\nfrom being an active part of the array, but it didn\u0027t\nset -\u003eraid_disk to -1 to record this fact.\n\n\nSigned-off-by: Maciej Trela \u003cMaciej.Trela@intel.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "dab8b29248b3f14f456651a2a6ee9b8fd16d1b3c",
      "tree": "ced1c7cd74f2e0efc5a48819aa4711047960e2d5",
      "parents": [
        "9af204cf720cedf369cf823bbd806c350201f7ea"
      ],
      "author": {
        "name": "Trela, Maciej",
        "email": "Maciej.Trela@intel.com",
        "time": "Mon Mar 08 16:02:45 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:48 2010 +1000"
      },
      "message": "md: Add support for Raid0-\u003eRaid10 takeover\n\n\nSigned-off-by: Maciej Trela \u003cmaciej.trela@intel.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "9af204cf720cedf369cf823bbd806c350201f7ea",
      "tree": "6aa684772cc1ba978e9dd0f67c3e0d5592588ca3",
      "parents": [
        "54071b3808ee3dc8624d9d6f1b06c4fd5308fa3b"
      ],
      "author": {
        "name": "Trela, Maciej",
        "email": "Maciej.Trela@intel.com",
        "time": "Mon Mar 08 16:02:44 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:48 2010 +1000"
      },
      "message": "md: Add support for Raid5-\u003eRaid0 and Raid10-\u003eRaid0 takeover\n\n\nSigned-off-by: Maciej Trela \u003cmaciej.trela@intel.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "54071b3808ee3dc8624d9d6f1b06c4fd5308fa3b",
      "tree": "b254ce6625ce3dd472faac0d59edeb9589b30f2b",
      "parents": [
        "84707f38e767ac470fd82af6c45a8cafe2bd1b9a"
      ],
      "author": {
        "name": "Trela Maciej",
        "email": "Maciej.Trela@intel.com",
        "time": "Mon Mar 08 16:02:42 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:47 2010 +1000"
      },
      "message": "md:Add support for Raid0-\u003eRaid5 takeover\n\nSigned-off-by: Maciej Trela \u003cmaciej.trela@intel.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "84707f38e767ac470fd82af6c45a8cafe2bd1b9a",
      "tree": "bc480c9aeedccd735e144576284523da1406cb98",
      "parents": [
        "c0cc75f84e0e413bce2dcabea74ef418da45c7c1"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Mar 16 17:23:35 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:47 2010 +1000"
      },
      "message": "md: don\u0027t use mddev-\u003eraid_disks in raid0 or raid10 while array is active.\n\nIn a subsequent patch we will make it possible to change\nmddev-\u003eraid_disks while a RAID0 or RAID10 array is active.  This is\npart of the process of reshaping such an array.\n\nThis means that we cannot use this value while processes requests\n(it is OK to use it during initialisation as we are locked against\nchanges then).\nBoth RAID0 and RAID10 have the same value stored in the private data\nstructure, so use that value instead.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "c0cc75f84e0e413bce2dcabea74ef418da45c7c1",
      "tree": "f5723fbd0f5828cadaeec650abb8066ad52fad71",
      "parents": [
        "7b92813c3c0b6990f14838e3985fb385d2655d0c"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Mar 22 10:28:51 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:47 2010 +1000"
      },
      "message": "md: discard StateChanged device flag.\n\nThis was needed when sysfs files could only be \u0027notified\u0027\nfrom process context.  Now that we have sys_notify_direct,\nwe can call it directly from an interrupt.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "7b92813c3c0b6990f14838e3985fb385d2655d0c",
      "tree": "c072a6684185f2c18734e704c488953250e8353a",
      "parents": [
        "696fcd535b5a8cfc0617e9cf1d9d69a13895cc1e"
      ],
      "author": {
        "name": "H Hartley Sweeten",
        "email": "hartleys@visionengravers.com",
        "time": "Mon Mar 08 16:02:40 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:46 2010 +1000"
      },
      "message": "drivers/md: Remove unnecessary casts of void *\n\nvoid pointers do not need to be cast to other pointer types.\n\nSigned-off-by: H Hartley Sweeten \u003chsweeten@visionengravers.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "696fcd535b5a8cfc0617e9cf1d9d69a13895cc1e",
      "tree": "b9f55833c83a41a6e047f0de82b17d9753ad0542",
      "parents": [
        "ee8b81b03dffa1c0075553d01c557714aedb85a1"
      ],
      "author": {
        "name": "Paul Clements",
        "email": "paul.clements@steeleye.com",
        "time": "Mon Mar 08 16:02:37 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:46 2010 +1000"
      },
      "message": "md: expose max value of behind writes counter\n\nKeep track of the maximum number of concurrent write-behind requests\nfor an md array and exposed this number in sysfs at\n   md/bitmap/max_backlog_used\n\nWriting any value to this file will clear it.\n\nThis allows userspace to be involved in tuning bitmap/backlog.\n\nSigned-off-by: Paul Clements \u003cpaul.clements@steeleye.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "ee8b81b03dffa1c0075553d01c557714aedb85a1",
      "tree": "95ba42aad6fb632699cd9e60d700d05ff96bc889",
      "parents": [
        "964147d5c86d63be79b442c30f3783d49860c078"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Mar 08 16:02:36 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:45 2010 +1000"
      },
      "message": "md: remove some dead fields from mddev_s\n\nThese fields have never been used.\ncommit 4b6d287f627b5fb6a49f78f9e81649ff98c62bb7\nadded them, but also added identical files to bitmap_super_s,\nand only used the latter.\n\nSo remove these unused fields.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "964147d5c86d63be79b442c30f3783d49860c078",
      "tree": "5c1eab8814cab3511c85037dec5220c5c24f91af",
      "parents": [
        "a64c876fd357906a1f7193723866562ad290654c"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:13 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue May 18 15:27:13 2010 +1000"
      },
      "message": "md/raid1: fix counting of write targets.\n\nThere is a very small race window when writing to a\nRAID1 such that if a device is marked faulty at exactly the wrong\ntime, the write-in-progress will not be sent to the device,\nbut the bitmap (if present) will be updated to say that\nthe write was sent.\n\nThen if the device turned out to still be usable as was re-added\nto the array, the bitmap-based-resync would skip resyncing that\nblock, possibly leading to corruption.  This would only be a problem\nif no further writes were issued to that area of the device (i.e.\nthat bitmap chunk).\n\nSuitable for any pending -stable kernel.\n\nCc: stable@kernel.org\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "a64c876fd357906a1f7193723866562ad290654c",
      "tree": "077fcdab730d40227585025bf15bf8e027949a29",
      "parents": [
        "b6eb127d274385d81ce8dd45c98190f097bce1b4"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Wed Apr 14 17:15:37 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon May 17 14:45:40 2010 +1000"
      },
      "message": "md: manage redundancy group in sysfs when changing level.\n\nSome levels expect the \u0027redundancy group\u0027 to be present,\nothers don\u0027t.\nSo when we change level of an array we might need to\nadd or remove this group.\n\nThis requires fixing up the current practice of overloading -\u003eprivate\nto indicate (when -\u003epers \u003d\u003d NULL) that something needs to be removed.\nSo create a new -\u003eto_remove to fill that role.\n\nWhen changing levels, we may need to add or remove attributes.  When\nchanging RAID5 -\u003e RAID6, we both add and remove the same thing.  It is\nimportant to catch this and optimise it out as the removal is delayed\nuntil a lock is released, so trying to add immediately would cause\nproblems.\n\n\nCc: stable@kernel.org\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "b6eb127d274385d81ce8dd45c98190f097bce1b4",
      "tree": "a78eb14056ade77c0026b1106e9a2cd486a762e6",
      "parents": [
        "ef2f80ff7325b2c1888ff02ead28957b5840bf51"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Thu Apr 15 10:13:47 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon May 17 14:40:07 2010 +1000"
      },
      "message": "md: remove unneeded sysfs files more promptly\n\nWhen an array is stopped we need to remove some\nsysfs files which are dependent on the type of array.\n\nWe need to delay that deletion as deleting them while holding\nreconfig_mutex can lead to deadlocks.\n\nWe currently delay them until the array is completely destroyed.\nHowever it is possible to deactivate and then reactivate the array.\nIt is also possible to need to remove sysfs files when changing level,\nwhich can potentially happen several times before an array is\ndestroyed.\n\nSo we need to delete these files more promptly: as soon as\nreconfig_mutex is dropped.\n\nWe need to ensure this happens before do_md_run can restart the array,\nso we use open_mutex for some extra locking.  This is not deadlock\nprone.\n\nCc: stable@kernel.org\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "ef2f80ff7325b2c1888ff02ead28957b5840bf51",
      "tree": "f7d4eb0a1816c8a608ba61a9368203d7b0ac4978",
      "parents": [
        "e2218350465e7e0931676b4849b594c978437bce"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon May 17 11:27:00 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon May 17 14:38:18 2010 +1000"
      },
      "message": "md/linear: avoid possible oops and array stop\n\nSince commit ef286f6fa673cd7fb367e1b145069d8dbfcc6081\nit has been important that each personality clears\n-\u003eprivate in the -\u003estop() function, or sets it to a\nattribute group to be removed.\nlinear.c doesn\u0027t.  This can sometimes lead to an oops,\nthough it doesn\u0027t always.\n\nSuitable for 2.6.33-stable and 2.6.34.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\nCc: stable@kernel.org\n"
    },
    {
      "commit": "e2218350465e7e0931676b4849b594c978437bce",
      "tree": "395398081c277c533d28edd70d08a9394e7d8597",
      "parents": [
        "627a2d3c29427637f4c5d31ccc7fcbd8d312cd71"
      ],
      "author": {
        "name": "Dan Williams",
        "email": "dan.j.williams@intel.com",
        "time": "Wed May 12 08:25:37 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Wed May 12 08:25:37 2010 +1000"
      },
      "message": "md: set mddev readonly flag on blkdev BLKROSET ioctl\n\nWhen the user sets the block device to readwrite then the mddev should\nfollow suit.  Otherwise, the BUG_ON in md_write_start() will be set to\ntrigger.\n\nThe reverse direction, setting mddev-\u003ero to match a set readonly\nrequest, can be ignored because the blkdev level readonly flag precludes\nthe need to have mddev-\u003ero set correctly.  Nevermind the fact that\nsetting mddev-\u003ero to 1 may fail if the array is in use.\n\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Dan Williams \u003cdan.j.williams@intel.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\n"
    },
    {
      "commit": "1176568de7e066c0be9e46c37503b9fd4730edcf",
      "tree": "8af6ab7cd59ef6a615048ef31d922aee76cadd57",
      "parents": [
        "87aa63000c484bfb9909989316f615240dfee018"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Fri May 07 19:44:26 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Fri May 07 21:10:57 2010 +1000"
      },
      "message": "md: restore ability of spare drives to spin down.\n\nSome time ago we stopped the clean/active metadata updates\nfrom being written to a \u0027spare\u0027 device in most cases so that\nit could spin down and say spun down.  Device failure/removal\netc are still recorded on spares.\n\nHowever commit 51d5668cb2e3fd1827a55 broke this 50% of the time,\ndepending on whether the event count is even or odd.\nThe change log entry said:\n\n   This means that the alignment between \u0027odd/even\u0027 and\n    \u0027clean/dirty\u0027 might take a little longer to attain,\n\nhow ever the code makes no attempt to create that alignment, so it\ncould take arbitrarily long.\n\nSo when we find that clean/dirty is not aligned with odd/even,\nforce a second metadata-update immediately.  There are already cases\nwhere a second metadata-update is needed immediately (e.g. when a\ndevice fails during the metadata update).  We just piggy-back on that.\n\nReported-by: Joe Bryant \u003ctenminjoe@yahoo.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\nCc: stable@kernel.org\n"
    },
    {
      "commit": "87aa63000c484bfb9909989316f615240dfee018",
      "tree": "ebadeba1c1c03b28e8c2c9036542bd6b75bb9837",
      "parents": [
        "722154e4cacf015161efe60009ae9be23d492296"
      ],
      "author": {
        "name": "Gabriele A. Trombetti",
        "email": "g.trombetti.lkrnl1213@logicschema.com",
        "time": "Wed Apr 28 11:51:17 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Fri May 07 21:10:35 2010 +1000"
      },
      "message": "md/raid6: Fix raid-6 read-error correction in degraded state\n\nFix: Raid-6 was not trying to correct a read-error when in\nsingly-degraded state and was instead dropping one more device, going to\ndoubly-degraded state. This patch fixes this behaviour.\n\nTested-by: Janos Haar \u003cjanos.haar@netcenter.hu\u003e\nSigned-off-by: Gabriele A. Trombetti \u003cg.trombetti.lkrnl1213@logicschema.com\u003e\nReported-by: Janos Haar \u003cjanos.haar@netcenter.hu\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\nCc: stable@kernel.org\n"
    },
    {
      "commit": "6e3b96ed610e5a1838e62ddae9fa0c3463f235fa",
      "tree": "c0c3f0d3e5f16c04d417160e5bca1d4abf562651",
      "parents": [
        "35f2a591192d0a5d9f7fc696869c76f0b8e49c3d"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Fri Apr 23 07:08:28 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Fri Apr 23 07:08:28 2010 +1000"
      },
      "message": "md/raid5: fix previous patch.\n\nPrevious patch changes stripe and chunk_number to sector_t but\nmistakenly did not update all of the divisions to use sector_dev().\n\nThis patch changes all the those divisions (actually the \u0027%\u0027 operator)\nto sector_div.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\nCc: stable@kernel.org\nTested-by: Stefan Lippers-Hollmann \u003cs.l-h@gmx.de\u003e\n"
    },
    {
      "commit": "35f2a591192d0a5d9f7fc696869c76f0b8e49c3d",
      "tree": "2b4cdbe2824a936f136fa0eb0dbd2db84927b057",
      "parents": [
        "85341c61361cc45a9cc0e11c01e8f4479ef460ac"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Apr 20 14:13:34 2010 +1000"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Apr 20 14:13:34 2010 +1000"
      },
      "message": "md/raid5: allow for more than 2^31 chunks.\n\nWith many large drives and small chunk sizes it is possible\nto create a RAID5 with more than 2^31 chunks.  Make sure this\nworks.\n\nReported-by: Brett King \u003cking.br@gmail.com\u003e\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\nCc: stable@kernel.org\n"
    },
    {
      "commit": "5a0e3ad6af8660be21ca98a971cd00f331318c05",
      "tree": "5bfb7be11a03176a87296a43ac6647975c00a1d1",
      "parents": [
        "ed391f4ebf8f701d3566423ce8f17e614cde9806"
      ],
      "author": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Wed Mar 24 17:04:11 2010 +0900"
      },
      "committer": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Tue Mar 30 22:02:32 2010 +0900"
      },
      "message": "include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h\n\npercpu.h is included by sched.h and module.h and thus ends up being\nincluded when building most .c files.  percpu.h includes slab.h which\nin turn includes gfp.h making everything defined by the two files\nuniversally available and complicating inclusion dependencies.\n\npercpu.h -\u003e slab.h dependency is about to be removed.  Prepare for\nthis change by updating users of gfp and slab facilities include those\nheaders directly instead of assuming availability.  As this conversion\nneeds to touch large number of source files, the following script is\nused as the basis of conversion.\n\n  http://userweb.kernel.org/~tj/misc/slabh-sweep.py\n\nThe script does the followings.\n\n* Scan files for gfp and slab usages and update includes such that\n  only the necessary includes are there.  ie. if only gfp is used,\n  gfp.h, if slab is used, slab.h.\n\n* When the script inserts a new include, it looks at the include\n  blocks and try to put the new include such that its order conforms\n  to its surrounding.  It\u0027s put in the include block which contains\n  core kernel includes, in the same order that the rest are ordered -\n  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there\n  doesn\u0027t seem to be any matching order.\n\n* If the script can\u0027t find a place to put a new include (mostly\n  because the file doesn\u0027t have fitting include block), it prints out\n  an error message indicating which .h file needs to be added to the\n  file.\n\nThe conversion was done in the following steps.\n\n1. The initial automatic conversion of all .c files updated slightly\n   over 4000 files, deleting around 700 includes and adding ~480 gfp.h\n   and ~3000 slab.h inclusions.  The script emitted errors for ~400\n   files.\n\n2. Each error was manually checked.  Some didn\u0027t need the inclusion,\n   some needed manual addition while adding it to implementation .h or\n   embedding .c file was more appropriate for others.  This step added\n   inclusions to around 150 files.\n\n3. The script was run again and the output was compared to the edits\n   from #2 to make sure no file was left behind.\n\n4. Several build tests were done and a couple of problems were fixed.\n   e.g. lib/decompress_*.c used malloc/free() wrappers around slab\n   APIs requiring slab.h to be added manually.\n\n5. The script was run on all .h files but without automatically\n   editing them as sprinkling gfp.h and slab.h inclusions around .h\n   files could easily lead to inclusion dependency hell.  Most gfp.h\n   inclusion directives were ignored as stuff from gfp.h was usually\n   wildly available and often used in preprocessor macros.  Each\n   slab.h inclusion directive was examined and added manually as\n   necessary.\n\n6. percpu.h was updated not to include slab.h.\n\n7. Build test were done on the following configurations and failures\n   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my\n   distributed build env didn\u0027t work with gcov compiles) and a few\n   more options had to be turned off depending on archs to make things\n   build (like ipr on powerpc/64 which failed due to missing writeq).\n\n   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.\n   * powerpc and powerpc64 SMP allmodconfig\n   * sparc and sparc64 SMP allmodconfig\n   * ia64 SMP allmodconfig\n   * s390 SMP allmodconfig\n   * alpha SMP allmodconfig\n   * um on x86_64 SMP allmodconfig\n\n8. percpu.h modifications were reverted so that it could be applied as\n   a separate patch and serve as bisection point.\n\nGiven the fact that I had only a couple of failures from tests on step\n6, I\u0027m fairly confident about the coverage of this conversion patch.\nIf there is a breakage, it\u0027s likely to be something in one of the arch\nheaders which should be easily discoverable easily on most builds of\nthe specific arch.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nGuess-its-ok-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\n"
    },
    {
      "commit": "31cc1dd344d941358345bd02f24c629dada9b08c",
      "tree": "9a8cd10e2e633cb83e1c7984adc85f58006dc2ec",
      "parents": [
        "961cde93dee2658000ead32abffb8ddf0727abe0",
        "627a2d3c29427637f4c5d31ccc7fcbd8d312cd71"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Mar 18 16:55:24 2010 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Mar 18 16:55:24 2010 -0700"
      },
      "message": "Merge branch \u0027for-linus\u0027 of git://neil.brown.name/md\n\n* \u0027for-linus\u0027 of git://neil.brown.name/md:\n  md: deal with merge_bvec_fn in component devices better.\n"
    },
    {
      "commit": "627a2d3c29427637f4c5d31ccc7fcbd8d312cd71",
      "tree": "f0de68842ca3b47d0152254e60d31cc561009119",
      "parents": [
        "25cf84cf377c0aae5dbcf937ea89bc7893db5176"
      ],
      "author": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Mon Mar 08 16:44:38 2010 +1100"
      },
      "committer": {
        "name": "NeilBrown",
        "email": "neilb@suse.de",
        "time": "Tue Mar 16 17:04:24 2010 +1100"
      },
      "message": "md: deal with merge_bvec_fn in component devices better.\n\nIf a component device has a merge_bvec_fn then as we never call it\nwe must ensure we never need to.  Currently this is done by setting\nmax_sector to 1 PAGE, however this does not stop a bio being created\nwith several sub-page iovecs that would violate the merge_bvec_fn.\n\nSo instead set max_segments to 1 and set the segment boundary to the\nsame as a page boundary to ensure there is only ever one single-page\nsegment of IO requested at a time.\n\nThis can particularly be an issue when \u0027xen\u0027 is used as it is\nknown to submit multiple small buffers in a single bio.\n\nSigned-off-by: NeilBrown \u003cneilb@suse.de\u003e\nCc: stable@kernel.org\n"
    },
    {
      "commit": "52cf25d0ab7f78eeecc59ac652ed5090f69b619e",
      "tree": "031d1ffb3890bd69c0260c864c512e0be62ac05c",
      "parents": [
        "6c1733aca0b48db4d0e660d54976a1cca25b5eaf"
      ],
      "author": {
        "name": "Emese Revfy",
        "email": "re.emese@gmail.com",
        "time": "Tue Jan 19 02:58:23 2010 +0100"
      },
      "committer": {
        "name": "Greg Kroah-Hartman",
        "email": "gregkh@suse.de",
        "time": "Sun Mar 07 17:04:49 2010 -0800"
      },
      "message": "Driver core: Constify struct sysfs_ops in struct kobj_type\n\nConstify struct sysfs_ops.\n\nThis is part of the ops structure constification\neffort started by Arjan van de Ven et al.\n\nBenefits of this constification:\n\n * prevents modification of data that is shared\n   (referenced) by many other structure instances\n   at runtime\n\n * detects/prevents accidental (but not intentional)\n   modification attempts on archs that enforce\n   read-only kernel data at runtime\n\n * potentially better optimized code as the compiler\n   can assume that the const data cannot be changed\n\n * the compiler/linker move const data into .rodata\n   and therefore exclude them from false sharing\n\nSigned-off-by: Emese Revfy \u003cre.emese@gmail.com\u003e\nAcked-by: David Teigland \u003cteigland@redhat.com\u003e\nAcked-by: Matt Domsch \u003cMatt_Domsch@dell.com\u003e\nAcked-by: Maciej Sosnowski \u003cmaciej.sosnowski@intel.com\u003e\nAcked-by: Hans J. Koch \u003chjk@linutronix.de\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nAcked-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nAcked-by: Stephen Hemminger \u003cshemminger@vyatta.com\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n\n"
    }
  ],
  "next": "f070304094edb8d516423e79edd27c97ec2020b0"
}