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b6d2b054e8baaee53fd2d4854c63cbf0f2c6262a
linux/block
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Bart Van Assche b6d2b054e8 mq-deadline: Fix request accounting 
The block layer may call the I/O scheduler .finish_request() callback
without having called the .insert_requests() callback. Make sure that the
mq-deadline I/O statistics are correct if the block layer inserts an I/O
request that bypasses the I/O scheduler. This patch prevents that lower
priority I/O is delayed longer than necessary for mixed I/O priority
workloads.

Cc: Niklas Cassel <Niklas.Cassel@wdc.com>
Cc: Damien Le Moal <damien.lemoal@wdc.com>
Cc: Hannes Reinecke <hare@suse.de>
Reported-by: Niklas Cassel <Niklas.Cassel@wdc.com>
Fixes: 08a9ad8bf6 ("block/mq-deadline: Add cgroup support")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20210824170520.1659173-1-bvanassche@acm.org
Reviewed-by: Niklas Cassel <niklas.cassel@wdc.com>
Tested-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-24 16:18:01 -06:00
..
partitions
block/partitions/ldm.c: Fix a kernel-doc warning
2021-08-05 11:49:01 -06:00
badblocks.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
bfq-cgroup.c
block, bfq: merge bursts of newly-created queues
2021-03-25 10:50:07 -06:00
bfq-iosched.c
blk: Fix lock inversion between ioc lock and bfqd lock
2021-06-24 18:43:55 -06:00
bfq-iosched.h
block, bfq: merge bursts of newly-created queues
2021-03-25 10:50:07 -06:00
bfq-wf2q.c
block, bfq: always inject I/O of queues blocked by wakers
2021-03-25 10:50:07 -06:00
bio-integrity.c
block: remove BLK_BOUNCE_ISA support
2021-04-06 09:28:17 -06:00
bio.c
block: fix trace completion for chained bio
2021-06-24 09:53:50 -06:00
blk-cgroup-rwstat.c
blk-cgroup: Fix the recursive blkg rwstat
2021-03-05 11:32:15 -07:00
blk-cgroup-rwstat.h
blk-cgroup: separate out blkg_rwstat under CONFIG_BLK_CGROUP_RWSTAT
2019-11-07 12:28:13 -07:00
blk-cgroup.c
blk-cgroup: prevent rcu_sched detected stalls warnings while iterating blkgs
2021-07-07 09:36:36 -06:00
blk-core.c
blk-mq: fix kernel panic during iterating over flush request
2021-08-17 08:33:32 -06:00
blk-crypto-fallback.c
block: rename BIO_MAX_PAGES to BIO_MAX_VECS
2021-03-11 07:47:48 -07:00
blk-crypto-internal.h
block: make blk_crypto_rq_bio_prep() able to fail
2020-10-05 10:47:43 -06:00
blk-crypto.c
dm: support key eviction from keyslot managers of underlying devices
2021-02-11 09:45:25 -05:00
blk-exec.c
block: return errors from blk_execute_rq()
2021-06-30 15:35:45 -06:00
blk-flush.c
blk-mq: fix is_flush_rq
2021-08-17 20:17:34 -06:00
blk-integrity.c
block: remove the unused blk_integrity_merge_bio export
2020-10-06 07:29:53 -06:00
blk-ioc.c
block: remove retry loop in ioc_release_fn()
2020-07-16 10:22:15 -06:00
blk-iocost.c
blk-iocost: fix lockdep warning on blkcg->lock
2021-08-09 20:00:26 -06:00
blk-iolatency.c
blk-iolatency: error out if blk_get_queue() failed in iolatency_set_limit()
2021-08-05 11:18:13 -06:00
blk-ioprio.c
block: Introduce the ioprio rq-qos policy
2021-06-21 15:03:40 -06:00
blk-ioprio.h
block: Introduce the ioprio rq-qos policy
2021-06-21 15:03:40 -06:00
blk-lib.c
block: export blk_next_bio()
2021-06-17 15:51:20 +02:00
blk-map.c
block: remove an incorrect check from blk_rq_append_bio
2021-04-12 06:45:12 -06:00
blk-merge.c
block: fix discard request merge
2021-06-29 07:41:08 -06:00
blk-mq-cpumap.c
blk-mq: remove the calling of local_memory_node()
2020-10-20 07:08:17 -06:00
blk-mq-debugfs-zoned.c
…
blk-mq-debugfs.c
block: Introduce the ioprio rq-qos policy
2021-06-21 15:03:40 -06:00
blk-mq-debugfs.h
…
blk-mq-pci.c
…
blk-mq-rdma.c
…
blk-mq-sched.c
blk-mq-sched: Fix blk_mq_sched_alloc_tags() error handling
2021-07-27 16:44:38 -06:00
blk-mq-sched.h
blk: Fix lock inversion between ioc lock and bfqd lock
2021-06-24 18:43:55 -06:00
blk-mq-sysfs.c
blk-mq: move cancel of hctx->run_work to the front of blk_exit_queue
2020-10-09 12:46:28 -06:00
blk-mq-tag.c
blk-mq: Use request queue-wide tags for tagset-wide sbitmap
2021-05-24 06:47:22 -06:00
blk-mq-tag.h
blk-mq: Some tag allocation code refactoring
2021-05-24 06:47:22 -06:00
blk-mq-virtio.c
blk-mq: Fix typo in comment
2020-03-17 20:55:21 +01:00
blk-mq.c
blk-mq: fix is_flush_rq
2021-08-17 20:17:34 -06:00
blk-mq.h
blk: Fix lock inversion between ioc lock and bfqd lock
2021-06-24 18:43:55 -06:00
blk-pm.c
scsi: block: Fix a race in the runtime power management code
2020-12-09 11:41:41 -05:00
blk-pm.h
block: Remove unused blk_pm_*() function definitions
2021-02-22 06:33:48 -07:00
blk-rq-qos.c
rq-qos: fix missed wake-ups in rq_qos_throttle try two
2021-06-08 15:12:57 -06:00
blk-rq-qos.h
block: Introduce the ioprio rq-qos policy
2021-06-21 15:03:40 -06:00
blk-settings.c
Merge tag 'block-5.13-2021-05-09' of git://git.kernel.dk/linux-block
2021-05-09 13:25:14 -07:00
blk-stat.c
blk-stat: make q->stats->lock irqsafe
2020-09-01 16:48:46 -06:00
blk-stat.h
…
blk-sysfs.c
block: mark queue init done at the end of blk_register_queue
2021-06-16 08:41:50 -06:00
blk-throttle.c
block: store a block_device pointer in struct bio
2021-01-24 18:17:20 -07:00
blk-timeout.c
block: blk-timeout: delete duplicated word
2020-07-31 16:29:47 -06:00
blk-wbt.c
blk-wbt: make sure throttle is enabled properly
2021-06-21 15:03:41 -06:00
blk-wbt.h
blk-wbt: introduce a new disable state to prevent false positive by rwb_enabled()
2021-06-21 15:03:41 -06:00
blk-zoned.c
blk-zoned: Remove the definition of blk_zone_start()
2021-04-07 14:31:45 -06:00
blk.h
blk-mq: fix is_flush_rq
2021-08-17 20:17:34 -06:00
bounce.c
block: stop calling blk_queue_bounce for passthrough requests
2021-04-06 09:28:18 -06:00
bsg-lib.c
block: remove REQ_OP_SCSI_{IN,OUT}
2021-06-30 15:34:19 -06:00
bsg.c
block: remove REQ_OP_SCSI_{IN,OUT}
2021-06-30 15:34:19 -06:00
cmdline-parser.c
…
disk-events.c
block: add the events* attributes to disk_attrs
2021-06-24 12:00:22 -06:00
elevator.c
blk: Fix lock inversion between ioc lock and bfqd lock
2021-06-24 18:43:55 -06:00
genhd.c
block: delay freeing the gendisk
2021-07-27 19:35:47 -06:00
ioctl.c
block: move bd_part_count to struct gendisk
2021-06-01 07:45:27 -06:00
ioprio.c
block: Fix sys_ioprio_set(.which=IOPRIO_WHO_PGRP) task iteration
2021-04-08 13:43:53 -06:00
Kconfig
block: Introduce the ioprio rq-qos policy
2021-06-21 15:03:40 -06:00
Kconfig.iosched
Revert "block/mq-deadline: Add cgroup support"
2021-08-11 13:47:26 -06:00
keyslot-manager.c
Merge tag 'for-5.12/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
2021-02-22 10:22:54 -08:00
kyber-iosched.c
kyber: make trace_block_rq call consistent with documentation
2021-08-06 16:40:47 -06:00
Makefile
Revert "block/mq-deadline: Add cgroup support"
2021-08-11 13:47:26 -06:00
mq-deadline.c
mq-deadline: Fix request accounting
2021-08-24 16:18:01 -06:00
opal_proto.h
block: sed-opal: Change the check condition for regular session validity
2020-03-12 08:00:10 -06:00
scsi_ioctl.c
block: remove REQ_OP_SCSI_{IN,OUT}
2021-06-30 15:34:19 -06:00
sed-opal.c
block: sed-opal: Change the check condition for regular session validity
2020-03-12 08:00:10 -06:00
t10-pi.c
block: Allow t10-pi to be modular
2020-01-06 20:59:04 -07:00