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d416c92c5d
kernel_optimize_test/block
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huhai d416c92c5d blk-mq: clear hctx->dispatch_from when mappings change 
When the number of hardware queues is changed, the drivers will call
blk_mq_update_nr_hw_queues() to remap hardware queues. This changes
the ctx mappings, but the current code doesn't clear the
->dispatch_from hint. This can result in dispatch_from pointing to
a ctx that isn't mapped to the hctx anymore.

Fixes: b347689ffb ("blk-mq-sched: improve dispatching from sw queue")
Signed-off-by: huhai <huhai@kylinos.cn>
Reviewed-by: Ming Lei <ming.lei@redhat.com>

Moved the placement of the clearing to where we clear other items
pertaining to the existing mapping, added Fixes line, and reworded
the commit message.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-18 08:35:38 -06:00
..
partitions partitions/msdos: Unable to mount UFS 44bsd partitions 2018-01-10 09:12:16 -07:00
badblocks.c badblocks: fix wrong return value in badblocks_set if badblocks are disabled 2017-11-03 11:29:50 -07:00
bfq-cgroup.c block: use ktime_get_ns() instead of sched_clock() for cfq and bfq 2018-05-09 08:33:06 -06:00
bfq-iosched.c bfq-iosched: update shallow depth to smallest one used 2018-05-10 11:27:41 -06:00
bfq-iosched.h bfq-iosched: remove unused variable 2018-05-10 11:27:31 -06:00
bfq-wf2q.c block, bfq: limit sectors served with interactive weight raising 2018-01-18 08:21:37 -07:00
bio-integrity.c block: Convert bio_set to mempool_init() 2018-05-14 13:16:03 -06:00
bio.c block: Export bio check/set pages_dirty 2018-05-14 13:16:15 -06:00
blk-cgroup.c blkcg: init root blkcg_gq under lock 2018-04-19 08:51:59 -06:00
blk-core.c block: Add warning for bi_next not NULL in bio_endio() 2018-05-14 13:16:13 -06:00
blk-exec.c blk-mq-sched: remove unused 'can_block' arg from blk_mq_sched_insert_request 2018-01-17 09:49:21 -07:00
blk-flush.c blk-mq: don't allocate driver tag upfront for flush rq 2017-11-04 12:40:13 -06:00
blk-integrity.c block: switch bios to blk_status_t 2017-06-09 09:27:32 -06:00
blk-ioc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
blk-lib.c block: break discard submissions into the user defined size 2018-05-08 15:10:44 -06:00
blk-map.c Merge branch 'for-4.16/block' of git://git.kernel.dk/linux-block 2018-01-29 11:51:49 -08:00
blk-merge.c block: consolidate struct request timestamp fields 2018-05-09 08:33:09 -06:00
blk-mq-cpumap.c blk-mq: don't keep offline CPUs mapped to hctx 0 2018-04-10 08:38:46 -06:00
blk-mq-debugfs.c blk-mq: remove blk_mq_delay_queue() 2018-04-10 08:38:46 -06:00
blk-mq-debugfs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
blk-mq-pci.c blk-mq: Allow PCI vector offset for mapping queues 2018-03-27 21:25:36 -06:00
blk-mq-rdma.c block: Add rdma affinity based queue mapping helper 2017-08-08 14:58:03 -04:00
blk-mq-sched.c blk-mq-sched: Enable merging discard bio into request 2018-02-01 14:45:11 -07:00
blk-mq-sched.h blk-mq-sched: remove unused 'can_block' arg from blk_mq_sched_insert_request 2018-01-17 09:49:21 -07:00
blk-mq-sysfs.c block: properly protect the 'queue' kobj in blk_unregister_queue 2018-01-15 08:41:38 -07:00
blk-mq-tag.c blk-mq: improve heavily contended tag case 2017-12-22 11:09:37 -07:00
blk-mq-tag.h Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block 2017-11-14 15:32:19 -08:00
blk-mq-virtio.c blk-mq: provide a default queue mapping for virtio device 2017-02-27 20:54:05 +02:00
blk-mq.c blk-mq: clear hctx->dispatch_from when mappings change 2018-05-18 08:35:38 -06:00
blk-mq.h blk-mq: fix sysfs inflight counter 2018-04-26 09:02:01 -06:00
blk-settings.c block: Introduce blk_queue_flag_{set,clear,test_and_{set,clear}}() 2018-03-08 14:13:48 -07:00
blk-softirq.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
blk-stat.c block: consolidate struct request timestamp fields 2018-05-09 08:33:09 -06:00
blk-stat.h block: consolidate struct request timestamp fields 2018-05-09 08:33:09 -06:00
blk-sysfs.c block: Add sysfs entry for fua support 2018-05-14 13:16:17 -06:00
blk-tag.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
blk-throttle.c block: get rid of struct blk_issue_stat 2018-05-09 08:33:05 -06:00
blk-timeout.c blk-mq: Directly schedule q->timeout_work when aborting a request 2018-04-02 16:36:13 -06:00
blk-wbt.c block: get rid of struct blk_issue_stat 2018-05-09 08:33:05 -06:00
blk-wbt.h block: get rid of struct blk_issue_stat 2018-05-09 08:33:05 -06:00
blk-zoned.c block: Suppress kernel-doc warnings triggered by blk-zoned.c 2018-03-09 08:23:32 -07:00
blk.h block: consolidate struct request timestamp fields 2018-05-09 08:33:09 -06:00
bounce.c block: don't disable interrupts during kmap_atomic() 2018-05-07 15:26:36 -06:00
bsg-lib.c bsg: split handling of SCSI CDBs vs transport requeues 2018-03-13 11:40:24 -06:00
bsg.c block: sanitize blk_get_request calling conventions 2018-05-14 08:55:12 -06:00
cfq-iosched.c block: consolidate struct request timestamp fields 2018-05-09 08:33:09 -06:00
cmdline-parser.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
compat_ioctl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
deadline-iosched.c deadline-iosched: Introduce zone locking support 2018-01-05 09:22:17 -07:00
elevator.c block: Document scheduler modification locking requirements 2018-01-18 12:54:42 -07:00
genhd.c blk-mq: fix sysfs inflight counter 2018-04-26 09:02:01 -06:00
ioctl.c block: pass inclusive 'lend' parameter to truncate_inode_pages_range 2018-02-23 15:20:19 -07:00
ioprio.c block: Add fallthrough markers to switch statements 2017-06-21 11:46:07 -06:00
Kconfig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig.iosched License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kyber-iosched.c kyber-iosched: update shallow depth when setting up hardware queue 2018-05-10 11:27:46 -06:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mq-deadline.c mq-deadline: Make sure to always unlock zones 2018-03-01 08:39:24 -07:00
noop-iosched.c block: move existing elevator ops to union 2017-01-17 10:03:33 -07:00
opal_proto.h block: sed-opal: Set MBRDone on S3 resume path if TPER is MBREnabled 2017-09-11 09:45:52 -06:00
partition-generic.c blk-mq: fix sysfs inflight counter 2018-04-26 09:02:01 -06:00
scsi_ioctl.c block: consistently use GFP_NOIO instead of __GFP_NORECLAIM 2018-05-14 08:55:18 -06:00
sed-opal.c for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
t10-pi.c t10-pi: Move opencoded contants to common header 2017-07-03 16:56:25 -06:00