Jens Axboe e861857545 blk-mq: fix sbitmap ws_active for shared tags ... We now wrap sbitmap waitqueues in an active counter, so we can avoid iterating wakeups unless we have waiters there. This works as long as everyone that's manipulating the waitqueues use the proper helpers. For the tag wait case for shared tags, however, we add ourselves to the waitqueue without incrementing/decrementing the ->ws_active count. This means that wakeups can take a long time to happen. Fix this by manually doing the inc/dec as needed for the wait queue handling. Reported-by: Michael Leun <kbug@newton.leun.net> Tested-by: Michael Leun <kbug@newton.leun.net> Cc: stable@vger.kernel.org Reviewed-by: Omar Sandoval <osandov@fb.com> Fixes: 5d2ee7122c ("sbitmap: optimize wakeup check") Signed-off-by: Jens Axboe <axboe@kernel.dk>		2019-03-25 13:05:47 -06:00
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partitions
badblocks.c
bfq-cgroup.c
bfq-iosched.c
bfq-iosched.h
bfq-wf2q.c
bio-integrity.c
bio.c	block: add BIO_NO_PAGE_REF flag	2019-03-18 10:44:48 -06:00
blk-cgroup.c	blkcg: Fix kernel-doc warnings	2019-03-20 14:39:09 -06:00
blk-core.c
blk-exec.c
blk-flush.c	blk-mq: use blk_mq_put_driver_tag() to put tag	2019-03-24 10:26:16 -06:00
blk-integrity.c
blk-ioc.c
blk-iolatency.c	blk-iolatency: #include "blk.h"	2019-03-20 14:19:38 -06:00
blk-lib.c
blk-map.c
blk-merge.c
blk-mq-cpumap.c
blk-mq-debugfs-zoned.c
blk-mq-debugfs.c
blk-mq-debugfs.h
blk-mq-pci.c
blk-mq-rdma.c
blk-mq-sched.c
blk-mq-sched.h
blk-mq-sysfs.c
blk-mq-tag.c
blk-mq-tag.h
blk-mq-virtio.c
blk-mq.c	blk-mq: fix sbitmap ws_active for shared tags	2019-03-25 13:05:47 -06:00
blk-mq.h	blk-mq: use blk_mq_put_driver_tag() to put tag	2019-03-24 10:26:16 -06:00
blk-pm.c
blk-pm.h
blk-rq-qos.c
blk-rq-qos.h
blk-settings.c
blk-softirq.c
blk-stat.c
blk-stat.h
blk-sysfs.c	block: add BLK_MQ_POLL_CLASSIC for hybrid poll and return EINVAL for unexpected value	2019-03-20 14:02:07 -06:00
blk-throttle.c
blk-timeout.c
blk-wbt.c
blk-wbt.h
blk-zoned.c
blk.h
bounce.c
bsg-lib.c
bsg.c
cmdline-parser.c
compat_ioctl.c
elevator.c
genhd.c
ioctl.c
ioprio.c
Kconfig
Kconfig.iosched
kyber-iosched.c
Makefile
mq-deadline.c
opal_proto.h
partition-generic.c
scsi_ioctl.c
sed-opal.c
t10-pi.c