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	…
Kconfig	Kconfig updates for v4.21	2018-12-29 13:03:29 -08:00
Kconfig.iosched	…
Makefile	…
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	blkcg: Fix kernel-doc warnings	2019-03-20 14:39:09 -06:00
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-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	block: fix segment calculation for passthrough IO	2019-03-06 09:42:54 -07:00
blk-mq-cpumap.c	…
blk-mq-debugfs-zoned.c	block: Cleanup license notice	2019-01-17 21:21:40 -07:00
blk-mq-debugfs.c	SCSI misc on 20190306	2019-03-09 16:53:47 -08:00
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: save queue mapping result into ctx directly	2019-02-01 08:33:04 -07:00
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	block: kill QUEUE_FLAG_FLUSH_NQ	2019-02-09 15:40:24 -07:00
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: Declare local functions static	2019-01-24 11:09:21 -07:00
blk-wbt.h	…
blk-zoned.c	for-4.21/block-20181221	2018-12-28 13:19:59 -08:00
blk.h	blk-mq: save queue mapping result into ctx directly	2019-02-01 08:33:04 -07:00
bounce.c	block: bounce: make sure that bvec table is updated	2019-02-21 10:58:44 -07:00
bsg-lib.c	scsi: bsg-lib: handle bidi requests without block layer help	2019-02-05 21:27:40 -05:00
bsg.c	scsi: bsg-lib: handle bidi requests without block layer help	2019-02-05 21:27:40 -05:00
cmdline-parser.c	…
compat_ioctl.c	…
elevator.c	block: avoid setting none scheduler if it's already none	2019-02-11 08:21:40 -07:00
genhd.c	block: Replace function name in string with __func__	2019-02-28 14:09:08 -07:00
ioctl.c	…
ioprio.c	…
kyber-iosched.c	…
mq-deadline.c	…
opal_proto.h	…
partition-generic.c	…
scsi_ioctl.c	…
sed-opal.c	…
t10-pi.c	…