Jens Axboe 77f1e0a52d bfq: update internal depth state when queue depth changes ... A previous commit moved the shallow depth and BFQ depth map calculations to be done at init time, moving it outside of the hotter IO path. This potentially causes hangs if the users changes the depth of the scheduler map, by writing to the 'nr_requests' sysfs file for that device. Add a blk-mq-sched hook that allows blk-mq to inform the scheduler if the depth changes, so that the scheduler can update its internal state. Tested-by: Kai Krakow <kai@kaishome.de> Reported-by: Paolo Valente <paolo.valente@linaro.org> Fixes: f0635b8a41 ("bfq: calculate shallow depths at init time") Signed-off-by: Jens Axboe <axboe@kernel.dk>		2019-04-13 19:08:22 -06:00
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partitions
badblocks.c
bfq-cgroup.c
bfq-iosched.c	bfq: update internal depth state when queue depth changes	2019-04-13 19:08:22 -06:00
bfq-iosched.h	block, bfq: fix use after free in bfq_bfqq_expire	2019-04-10 07:54:38 -06:00
bfq-wf2q.c	block, bfq: fix use after free in bfq_bfqq_expire	2019-04-10 07:54:38 -06:00
bio-integrity.c
bio.c	block: do not leak memory in bio_copy_user_iov()	2019-04-10 16:14:40 -06:00
blk-cgroup.c
blk-core.c	block: Revert v5.0 blk_mq_request_issue_directly() changes	2019-04-05 09:40:46 -06:00
blk-exec.c
blk-flush.c
blk-integrity.c
blk-ioc.c
blk-iolatency.c
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	block: Revert v5.0 blk_mq_request_issue_directly() changes	2019-04-05 09:40:46 -06:00
blk-mq-sched.h
blk-mq-sysfs.c
blk-mq-tag.c
blk-mq-tag.h
blk-mq-virtio.c
blk-mq.c	bfq: update internal depth state when queue depth changes	2019-04-13 19:08:22 -06:00
blk-mq.h	block: Revert v5.0 blk_mq_request_issue_directly() changes	2019-04-05 09:40:46 -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
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