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	block: remove legacy IO schedulers	2018-11-07 13:42:32 -07:00
Makefile	block: remove legacy IO schedulers	2018-11-07 13:42:32 -07:00
badblocks.c	…
bfq-cgroup.c	blkcg: fix ref count issue with bio_blkcg() using task_css	2018-12-07 22:26:36 -07:00
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	block: remove the bio_integrity_advance export	2018-12-16 08:33:57 -07:00
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	block: remove dead elevator code	2018-11-07 13:42:32 -07:00
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	block: merge BIOVEC_SEG_BOUNDARY into biovec_phys_mergeable	2018-09-24 12:33:57 -06:00
blk-ioc.c	block: remove the queue_lock indirection	2018-11-15 12:17:28 -07:00
blk-iolatency.c	blk-iolatency: #include "blk.h"	2019-03-20 14:19:38 -06:00
blk-lib.c	block: fix 32 bit overflow in __blkdev_issue_discard()	2018-11-14 08:17:18 -07:00
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: initial support for multiple queue maps	2018-11-07 13:45:00 -07:00
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-debugfs: support rq_qos	2018-12-16 19:53:47 -07:00
blk-mq-pci.c	blk-mq: initial support for multiple queue maps	2018-11-07 13:45:00 -07:00
blk-mq-rdma.c	blk-mq-rdma: pass in queue map to blk_mq_rdma_map_queues	2018-12-13 09:59:08 +01:00
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	block: mq-deadline: Fix write completion handling	2018-12-17 11:19:39 -07:00
blk-mq-sysfs.c	blk-mq: export hctx->type in debugfs instead of sysfs	2018-12-17 05:44:45 -07:00
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: initial support for multiple queue maps	2018-11-07 13:45:00 -07:00
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	block: remove the queue_lock indirection	2018-11-15 12:17:28 -07:00
blk-pm.h	block: remove the queue_lock indirection	2018-11-15 12:17:28 -07:00
blk-rq-qos.c	blk-mq-debugfs: support rq_qos	2018-12-16 19:53:47 -07:00
blk-rq-qos.h	block: fix blk-iolatency accounting underflow	2018-12-17 11:19:54 -07:00
blk-settings.c	block: kill QUEUE_FLAG_FLUSH_NQ	2019-02-09 15:40:24 -07:00
blk-softirq.c	block: remove a few unused exports	2018-11-15 12:13:25 -07:00
blk-stat.c	block: remove a few unused exports	2018-11-15 12:13:25 -07:00
blk-stat.h	block: deactivate blk_stat timer in wbt_disable_default()	2018-12-12 06:47:51 -07:00
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	blkcg: consolidate bio_issue_init() to be a part of core	2018-12-07 22:26:37 -07:00
blk-timeout.c	block: don't hold the queue_lock over blk_abort_request	2018-11-15 12:13:18 -07:00
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	block: Introduce BLKGETNRZONES ioctl	2018-10-25 11:17:40 -06:00
ioprio.c	…
kyber-iosched.c	kyber: use sbitmap add_wait_queue/list_del wait helpers	2018-12-20 12:17:21 -07:00
mq-deadline.c	block: mq-deadline: Fix write completion handling	2018-12-17 11:19:39 -07:00
opal_proto.h	…
partition-generic.c	block: return just one value from part_in_flight	2018-12-10 08:30:38 -07:00
scsi_ioctl.c	…
sed-opal.c	…
t10-pi.c	…