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Jens Axboe 7fe311302f blk-mq: update hardware and software queues for sleeping alloc 
If we end up sleeping due to running out of requests, we should
update the hardware and software queues in the map ctx structure.
Otherwise we could end up having rq->mq_ctx point to the pre-sleep
context, and risk corrupting ctx->rq_list since we'll be
grabbing the wrong lock when inserting the request.

Reported-by: Dave Jones <davej@codemonkey.org.uk>
Reported-by: Chris Mason <clm@fb.com>
Tested-by: Chris Mason <clm@fb.com>
Fixes: 63581af3f3 ("blk-mq: remove non-blocking pass in blk_mq_map_request")
Signed-off-by: Jens Axboe <axboe@fb.com>
 		2016-10-27 09:56:03 -06:00
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partitions
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Kconfig Merge branch 'for-4.9/block-irq' of git://git.kernel.dk/linux-block 2016-10-09 17:29:33 -07:00
Kconfig.iosched
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Makefile Merge branch 'for-4.9/block-smp' of git://git.kernel.dk/linux-block 2016-10-09 17:32:20 -07:00
badblocks.c badblocks: badblocks_set/clear update unacked_exist 2016-10-21 15:45:47 -06:00
bio-integrity.c block: rename bio bi_rw to bi_opf 2016-08-07 14:41:02 -06:00
bio.c block: export bio_free_pages to other modules 2016-09-22 07:48:03 -06:00
blk-cgroup.c blkcg: Unlock blkcg_pol_mutex only once when cpd == NULL 2016-09-30 10:31:20 +02:00
blk-core.c block: add poll_considered statistic 2016-09-14 08:41:21 -06:00
blk-exec.c
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blk-flush.c block: flush: fix IO hang in case of flood fua req 2016-10-26 07:49:27 -06:00
blk-integrity.c
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blk-ioc.c
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blk-lib.c block: require write_same and discard requests align to logical block size 2016-10-11 15:06:30 -07:00
blk-map.c
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blk-merge.c block: make sure a big bio is split into at most 256 bvecs 2016-08-24 08:17:24 -06:00
blk-mq-cpumap.c blk-mq: allow the driver to pass in a queue mapping 2016-09-15 08:42:03 -06:00
blk-mq-pci.c blk_mq: linux/blk-mq.h does not include all the headers it depends on 2016-09-19 08:21:51 -06:00
blk-mq-sysfs.c blk-mq: register device instead of disk 2016-09-21 07:56:16 -06:00
blk-mq-tag.c Merge branch 'for-4.9/block-irq' of git://git.kernel.dk/linux-block 2016-10-09 17:29:33 -07:00
blk-mq-tag.h Merge branch 'for-4.9/block-irq' of git://git.kernel.dk/linux-block 2016-10-09 17:29:33 -07:00
blk-mq.c blk-mq: update hardware and software queues for sleeping alloc 2016-10-27 09:56:03 -06:00
blk-mq.h Merge branch 'for-4.9/block-smp' of git://git.kernel.dk/linux-block 2016-10-09 17:32:20 -07:00
blk-settings.c
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blk-softirq.c This adds a new gcc plugin named "latent_entropy". It is designed to 2016-10-15 10:03:15 -07:00
blk-sysfs.c blk-mq: register device instead of disk 2016-09-21 07:56:16 -06:00
blk-tag.c
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blk-throttle.c blk-throttle: Extend slice if throttle group is not empty 2016-09-19 15:12:41 -06:00
blk-timeout.c
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blk.h blk-mq: remove ->map_queue 2016-09-15 08:42:03 -06:00
bounce.c
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bsg-lib.c
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bsg.c
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cfq-iosched.c cfq: fix starvation of asynchronous writes 2016-09-23 10:01:24 -06:00
cmdline-parser.c
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compat_ioctl.c
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deadline-iosched.c
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elevator.c block: Fix secure erase 2016-08-16 09:16:51 -06:00
genhd.c block: fix bdi vs gendisk lifetime mismatch 2016-08-04 14:19:16 -06:00
ioctl.c block: invalidate the page cache when issuing BLKZEROOUT 2016-10-11 15:06:30 -07:00
ioprio.c
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noop-iosched.c
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partition-generic.c
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scsi_ioctl.c
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t10-pi.c
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