Ming Lei 5815839b3c blk-mq: introduce new lock for protecting hctx->dispatch_wait ... Now hctx->lock is only acquired when adding hctx->dispatch_wait to one wait queue, but not held when removing it from the wait queue. IO hang can be observed easily if SCHED RESTART is disabled, that means now RESTART exits just for fixing the issue in blk_mq_mark_tag_wait(). This patch fixes the issue by introducing hctx->dispatch_wait_lock and holding it for removing hctx->dispatch_wait in blk_mq_dispatch_wake(), since we need to avoid acquiring hctx->lock in irq context. Fixes: eb619fdb2d ("blk-mq: fix issue with shared tag queue re-running") Cc: Christoph Hellwig <hch@lst.de> Cc: Omar Sandoval <osandov@fb.com> Cc: Bart Van Assche <bart.vanassche@wdc.com> Tested-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2018-07-09 09:07:52 -06:00
..
partitions	treewide: Use array_size() in vzalloc()	2018-06-12 16:19:22 -07:00
Kconfig	block: Make struct request_queue smaller for CONFIG_BLK_DEV_ZONED=n	2018-07-09 09:07:52 -06:00
Kconfig.iosched	…
Makefile	block: Make struct request_queue smaller for CONFIG_BLK_DEV_ZONED=n	2018-07-09 09:07:52 -06:00
badblocks.c	…
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	block, bfq: give a better name to bfq_bfqq_may_idle	2018-07-09 09:07:52 -06:00
bfq-iosched.h	block, bfq: add/remove entity weights correctly	2018-07-09 09:07:52 -06:00
bfq-wf2q.c	block, bfq: fix service being wrongly set to zero in case of preemption	2018-07-09 09:07:52 -06:00
bio-integrity.c	block: Convert bio_set to mempool_init()	2018-05-14 13:16:03 -06:00
bio.c	for-linus-20180623	2018-06-24 06:33:54 +08:00
blk-cgroup.c	blkcg: init root blkcg_gq under lock	2018-04-19 08:51:59 -06:00
blk-core.c	block: Fix cloning of requests with a special payload	2018-06-28 09:51:30 -06:00
blk-exec.c	…
blk-flush.c	block: fix use-after-free in block flush handling	2018-06-09 06:37:14 -06:00
blk-integrity.c	block drivers/block: Use octal not symbolic permissions	2018-05-24 13:38:59 -06:00
blk-ioc.c	…
blk-lib.c	block: break discard submissions into the user defined size	2018-05-08 15:10:44 -06:00
blk-map.c	…
blk-merge.c	block: don't use blocking queue entered for recursive bio submits	2018-06-02 20:35:00 -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-zoned.c	block: Make struct request_queue smaller for CONFIG_BLK_DEV_ZONED=n	2018-07-09 09:07:52 -06:00
blk-mq-debugfs.c	block: Make struct request_queue smaller for CONFIG_BLK_DEV_ZONED=n	2018-07-09 09:07:52 -06:00
blk-mq-debugfs.h	block: Make struct request_queue smaller for CONFIG_BLK_DEV_ZONED=n	2018-07-09 09:07:52 -06:00
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	…
blk-mq-sched.c	blk-mq: update nr_requests when switching to 'none' scheduler	2018-06-02 20:35:00 -06:00
blk-mq-sched.h	block: move sysfs_lock into elevator_init	2018-06-01 07:38:19 -06:00
blk-mq-sysfs.c	block drivers/block: Use octal not symbolic permissions	2018-05-24 13:38:59 -06:00
blk-mq-tag.c	blk-mq: remove blk_mq_tagset_iter	2018-06-14 17:01:45 +02:00
blk-mq-tag.h	…
blk-mq-virtio.c	…
blk-mq.c	blk-mq: introduce new lock for protecting hctx->dispatch_wait	2018-07-09 09:07:52 -06:00
blk-mq.h	blk-mq: cleanup blk_mq_get_driver_tag()	2018-07-09 09:07:52 -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	block: fix timeout changes for legacy request drivers	2018-06-19 11:27:18 -06:00
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: convert bounce, q->bio_split to bioset_init()/mempool_init()	2018-05-30 15:33:32 -06:00
blk-tag.c	for-linus-20180616	2018-06-17 05:37:55 +09:00
blk-throttle.c	blk-throttle: return proper bool type to caller instead of 0/1	2018-05-30 12:48:22 -06:00
blk-timeout.c	blk-mq: Fix timeout handling in case the timeout handler returns BLK_EH_DONE	2018-06-23 10:25:45 -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: Remove a superfluous cast from blkdev_report_zones()	2018-07-09 09:07:52 -06:00
blk.h	block: split the blk-mq case from elevator_init	2018-06-01 07:38:21 -06:00
bounce.c	block: fixup bioset_integrity_create() call	2018-05-30 18:51:21 -06:00
bsg-lib.c	block: remove parent device reference from struct bsg_class_device	2018-05-29 13:00:25 -06:00
bsg.c	bsg: fix race of bsg_open and bsg_unregister	2018-06-15 08:15:37 -06:00
cfq-iosched.c	block drivers/block: Use octal not symbolic permissions	2018-05-24 13:38:59 -06:00
cmdline-parser.c	…
compat_ioctl.c	…
deadline-iosched.c	block drivers/block: Use octal not symbolic permissions	2018-05-24 13:38:59 -06:00
elevator.c	block: split the blk-mq case from elevator_init	2018-06-01 07:38:21 -06:00
genhd.c	Merge branch 'hch.procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2018-06-04 10:00:01 -07:00
ioctl.c	block: pass inclusive 'lend' parameter to truncate_inode_pages_range	2018-02-23 15:20:19 -07:00
ioprio.c	block: add ioprio_check_cap function	2018-05-31 10:50:54 -04:00
kyber-iosched.c	block: kyber: make kyber more friendly with merging	2018-05-30 10:47:40 -06:00
mq-deadline.c	block drivers/block: Use octal not symbolic permissions	2018-05-24 13:38:59 -06:00
noop-iosched.c	…
opal_proto.h	…
partition-generic.c	block: don't print a message when the device went away	2018-05-29 08:59:21 -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	block: sed-opal: Fix a couple off by one bugs	2018-06-20 12:04:06 -06:00
t10-pi.c	…