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Christoph Hellwig f4829a9b7a blk-mq: fix racy updates of rq->errors 
blk_mq_complete_request may be a no-op if the request has already
been completed by others means (e.g. a timeout or cancellation), but
currently drivers have to set rq->errors before calling
blk_mq_complete_request, which might leave us with the wrong error value.

Add an error parameter to blk_mq_complete_request so that we can
defer setting rq->errors until we known we won the race to complete the
request.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
 		2015-10-01 10:10:55 +02:00
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partitions
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Kconfig
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Kconfig.iosched
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Makefile
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bio-integrity.c block: Refuse adding appending a gapped integrity page to a bio 2015-09-11 09:03:45 -06:00
bio.c Merge branch 'for-4.3/blkcg' of git://git.kernel.dk/linux-block 2015-09-10 18:56:14 -07:00
blk-cgroup.c Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2015-09-19 18:57:09 -07:00
blk-core.c Merge branch 'for-4.3/blkcg' of git://git.kernel.dk/linux-block 2015-09-10 18:56:14 -07:00
blk-exec.c
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blk-flush.c blk-mq: fix race between timeout and freeing request 2015-08-15 09:45:21 -06:00
blk-integrity.c block: Refuse request/bio merges with gaps in the integrity payload 2015-09-11 09:03:04 -06:00
blk-ioc.c
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blk-iopoll.c
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blk-lib.c block: remove split code in blkdev_issue_{discard,write_same} 2015-08-13 12:31:47 -06:00
blk-map.c block: Copy a user iovec if it includes gaps 2015-09-11 09:03:50 -06:00
blk-merge.c block: blk-merge: fast-clone bio when splitting rw bios 2015-09-17 09:58:38 -06:00
blk-mq-cpu.c
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blk-mq-cpumap.c blk-mq: avoid inserting requests before establishing new mapping 2015-09-29 11:32:50 -06:00
blk-mq-sysfs.c blk-mq: fix deadlock when reading cpu_list 2015-09-29 11:32:51 -06:00
blk-mq-tag.c blk-mq: fix race between timeout and freeing request 2015-08-15 09:45:21 -06:00
blk-mq-tag.h blk-mq: fix race between timeout and freeing request 2015-08-15 09:45:21 -06:00
blk-mq.c blk-mq: fix racy updates of rq->errors 2015-10-01 10:10:55 +02:00
blk-mq.h blk-mq: avoid inserting requests before establishing new mapping 2015-09-29 11:32:50 -06:00
blk-settings.c Merge branch 'for-4.3/core' of git://git.kernel.dk/linux-block 2015-09-02 13:10:25 -07:00
blk-softirq.c
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blk-sysfs.c block: make generic_make_request handle arbitrarily sized bios 2015-08-13 12:31:33 -06:00
blk-tag.c
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blk-throttle.c blkcg: implement interface for the unified hierarchy 2015-08-18 15:49:35 -07:00
blk-timeout.c
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blk.h Merge branch 'for-4.3/blkcg' of git://git.kernel.dk/linux-block 2015-09-10 18:56:14 -07:00
bounce.c Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2015-09-19 18:57:09 -07:00
bsg-lib.c
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bsg.c
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cfq-iosched.c blkcg: use CGROUP_WEIGHT_* scale for io.weight on the unified hierarchy 2015-08-18 15:49:36 -07:00
cmdline-parser.c
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compat_ioctl.c
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deadline-iosched.c
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elevator.c Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block 2015-06-25 16:00:17 -07:00
genhd.c block: partition: convert percpu ref 2015-07-17 08:41:53 -06:00
ioctl.c block: replace trylock with mutex_lock in blkdev_reread_part() 2015-05-20 09:05:45 -06:00
ioprio.c
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noop-iosched.c
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partition-generic.c block: partition: convert percpu ref 2015-07-17 08:41:53 -06:00
scsi_ioctl.c block: fix bogus EFAULT error from SG_IO ioctl 2015-06-27 11:43:34 -06:00
t10-pi.c
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