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Bart Van Assche 205fb5f5ba blk-mq: add blk_mq_unique_tag() 
The queuecommand() callback functions in SCSI low-level drivers
need to know which hardware context has been selected by the
block layer. Since this information is not available in the
request structure, and since passing the hctx pointer directly to
the queuecommand callback function would require modification of
all SCSI LLDs, add a function to the block layer that allows to
query the hardware context index.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 11:16:09 +01:00
..
partitions block: Replace strnicmp with strncasecmp 2014-09-27 16:48:55 -06:00
bio-integrity.c bio-integrity: remove the needless fail handle of bip_slab creating 2014-10-13 15:09:38 -06:00
bio.c block: add bioset_create_nobvec() 2014-10-03 15:28:18 -06:00
blk-cgroup.c blkcg: remove blkcg->id 2014-09-08 09:55:37 -06:00
blk-cgroup.h blkcg: remove blkcg->id 2014-09-08 09:55:37 -06:00
blk-core.c Merge branch 'for-3.18/core' of git://git.kernel.dk/linux-block 2014-10-18 11:53:51 -07:00
blk-exec.c blk-mq: avoid infinite recursion with the FUA flag 2014-09-22 11:55:19 -06:00
blk-flush.c blk-mq: support per-distpatch_queue flush machinery 2014-09-25 15:22:45 -06:00
blk-integrity.c block: Don't merge requests if integrity flags differ 2014-09-27 09:14:57 -06:00
blk-ioc.c block: Substitute rcu_access_pointer() for rcu_dereference_raw() 2014-02-18 12:21:26 -08:00
blk-iopoll.c Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next 2014-06-03 12:57:53 -07:00
blk-lib.c block/blk-lib.c: make __blkdev_issue_zeroout static 2014-05-26 17:39:09 -06:00
blk-map.c block: remove struct request buffer member 2014-04-15 14:03:02 -06:00
blk-merge.c blk-merge: recaculate segment if it isn't less than max segments 2014-10-21 19:00:32 -06:00
blk-mq-cpu.c blk-mq: add file comments and update copyright notices 2014-05-28 10:15:41 -06:00
blk-mq-cpumap.c blk-mq: add file comments and update copyright notices 2014-05-28 10:15:41 -06:00
blk-mq-sysfs.c blk-mq, percpu_ref: start q->mq_usage_counter in atomic mode 2014-09-24 13:37:21 -04:00
blk-mq-tag.c blk-mq: add blk_mq_unique_tag() 2014-11-12 11:16:09 +01:00
blk-mq-tag.h blk-mq: bitmap tag: fix races on shared ::wake_index fields 2014-06-17 22:12:35 -07:00
blk-mq.c blk-mq: add blk_mq_unique_tag() 2014-11-12 11:16:09 +01:00
blk-mq.h block: introduce blk_init_flush and its pair 2014-09-25 15:22:35 -06:00
blk-settings.c block: fix alignment_offset math that assumes io_min is a power-of-2 2014-10-09 09:41:40 -06:00
blk-softirq.c block: fix regression with block enabled tagging 2014-04-09 21:54:06 -06:00
blk-sysfs.c Merge branch 'for-3.18/core' of git://git.kernel.dk/linux-block 2014-10-18 11:53:51 -07:00
blk-tag.c block: don't assume last put of shared tags is for the host 2014-07-08 12:25:28 +02:00
blk-throttle.c cgroup: remove sane_behavior support on non-default hierarchies 2014-07-09 10:08:08 -04:00
blk-timeout.c block: fix blk_abort_request on blk-mq 2014-09-22 12:00:08 -06:00
blk.h blk-mq: support per-distpatch_queue flush machinery 2014-09-25 15:22:45 -06:00
bounce.c mm: convert some level-less printks to pr_* 2014-06-06 16:08:18 -07:00
bsg-lib.c
bsg.c bsg: fix potential error pointer dereference 2014-08-29 08:34:14 -06:00
cfq-iosched.c Merge branch 'for-linus' into for-3.18/core 2014-09-11 09:31:18 -06:00
cmdline-parser.c
compat_ioctl.c block, bdi: an active gendisk always has a request_queue associated with it 2014-09-08 10:00:35 -06:00
deadline-iosched.c block: Stop abusing csd.list for fifo_time 2014-02-24 14:46:32 -08:00
elevator.c block: fix wrong error return in elevator_init() 2014-10-23 12:35:42 -06:00
genhd.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2014-10-07 21:16:26 -04:00
ioctl.c block, bdi: an active gendisk always has a request_queue associated with it 2014-09-08 10:00:35 -06:00
ioprio.c block: move ioprio.c from fs/ to block/ 2014-05-19 11:02:18 -06:00
Kconfig block: Add T10 Protection Information functions 2014-09-27 09:14:59 -06:00
Kconfig.iosched
Makefile block: Add T10 Protection Information functions 2014-09-27 09:14:59 -06:00
noop-iosched.c
partition-generic.c block: Fix dev_t minor allocation lifetime 2014-09-03 15:01:02 -06:00
scsi_ioctl.c scsi: Fix error handling in SCSI_IOCTL_SEND_COMMAND 2014-10-22 20:13:39 -06:00
t10-pi.c block: Add T10 Protection Information functions 2014-09-27 09:14:59 -06:00