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Song Liu 9a14014df7 blk-mq: allow 4x BLK_MAX_REQUEST_COUNT at blk_plug for multiple_queues 
[ Upstream commit 7f2a6a69f7ced6db8220298e0497cf60482a9d4b ]

Limiting number of request to BLK_MAX_REQUEST_COUNT at blk_plug hurts
performance for large md arrays. [1] shows resync speed of md array drops
for md array with more than 16 HDDs.

Fix this by allowing more request at plug queue. The multiple_queue flag
is used to only apply higher limit to multiple queue cases.

[1] https://lore.kernel.org/linux-raid/CAFDAVznS71BXW8Jxv6k9dXc2iR3ysX3iZRBww_rzA8WifBFxGg@mail.gmail.com/
Tested-by: Marcin Wanat <marcin.wanat@gmail.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-09-26 14:09:01 +02:00
..
partitions
partitions: msdos: fix one-byte get_unaligned()
2021-07-20 16:05:39 +02:00
badblocks.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
bfq-cgroup.c
bfq: fix blkio cgroup leakage v4
2020-08-18 07:48:08 -07:00
bfq-iosched.c
block, bfq: honor already-setup queue merges
2021-09-22 12:28:01 +02:00
bfq-iosched.h
bfq: fix blkio cgroup leakage v4
2020-08-18 07:48:08 -07:00
bfq-wf2q.c
bfq: fix blkio cgroup leakage v4
2020-08-18 07:48:08 -07:00
bio-integrity.c
block: make function __bio_integrity_free() static
2020-07-02 12:38:18 -06:00
bio.c
bio: fix page leak bio_add_hw_page failure
2021-09-15 09:50:47 +02:00
blk-cgroup-rwstat.c
blk-cgroup: Fix the recursive blkg rwstat
2021-03-30 14:31:48 +02:00
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: Use cond_resched() when destroy blkgs
2021-02-13 13:55:13 +01:00
blk-core.c
blk-mq: fix kernel panic during iterating over flush request
2021-09-12 08:58:27 +02:00
blk-crypto-fallback.c
block: rename generic_make_request to submit_bio_noacct
2020-07-01 07:27:24 -06:00
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
blk-crypto: fix check for too-large dun_bytes
2021-09-15 09:50:30 +02:00
blk-exec.c
block: add a blk_account_io_merge_bio helper
2020-05-27 05:21:23 -06:00
blk-flush.c
blk-mq: fix is_flush_rq
2021-09-12 08:58:27 +02:00
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
2021-09-03 10:09:22 +02:00
blk-iolatency.c
blk-iolatency: error out if blk_get_queue() failed in iolatency_set_limit()
2021-08-12 13:22:08 +02:00
blk-lib.c
block: add a bdev_is_partition helper
2020-09-25 08:18:57 -06:00
blk-map.c
block: fix bmd->is_null_mapped initialization
2020-09-23 09:18:39 -06:00
blk-merge.c
block: return ELEVATOR_DISCARD_MERGE if possible
2021-09-15 09:50:28 +02:00
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
block: Cleanup license notice
2019-01-17 21:21:40 -07:00
blk-mq-debugfs.c
blk-mq-debugfs: Add decode for BLK_MQ_F_TAG_HCTX_SHARED
2021-01-19 18:27:29 +01:00
blk-mq-debugfs.h
blk-mq: no need to check return value of debugfs_create functions
2019-06-13 03:00:30 -06:00
blk-mq-pci.c
block: Fix blk_mq_*_map_queues() kernel-doc headers
2019-05-31 15:12:34 -06:00
blk-mq-rdma.c
block: Fix blk_mq_*_map_queues() kernel-doc headers
2019-05-31 15:12:34 -06:00
blk-mq-sched.c
kyber: fix out of bounds access when preempted
2021-05-19 10:13:13 +02:00
blk-mq-sched.h
block-5.10-2020-10-12
2020-10-13 12:12:44 -07:00
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: clear stale request in tags->rq[] before freeing one request pool
2021-07-14 16:55:58 +02:00
blk-mq-tag.h
blk-mq: clear stale request in tags->rq[] before freeing one request pool
2021-07-14 16:55:58 +02:00
blk-mq-virtio.c
blk-mq: Fix typo in comment
2020-03-17 20:55:21 +01:00
blk-mq.c
blk-mq: allow 4x BLK_MAX_REQUEST_COUNT at blk_plug for multiple_queues
2021-09-26 14:09:01 +02:00
blk-mq.h
blk-mq: grab rq->refcount before calling ->fn in blk_mq_tagset_busy_iter
2021-07-14 16:55:58 +02:00
blk-pm.c
scsi: block: Fix a race in the runtime power management code
2021-01-06 14:56:50 +01:00
blk-pm.h
scsi: block: Do not accept any requests while suspended
2021-01-12 20:18:17 +01:00
blk-rq-qos.c
rq-qos: fix missed wake-ups in rq_qos_throttle try two
2021-07-19 09:45:00 +02:00
blk-rq-qos.h
block: fix race between adding/removing rq qos and normal IO
2021-07-14 16:56:00 +02:00
blk-settings.c
blk-settings: align max_sectors on "logical_block_size" boundary
2021-03-04 11:38:22 +01:00
blk-stat.c
blk-stat: make q->stats->lock irqsafe
2020-09-01 16:48:46 -06:00
blk-stat.h
block: deactivate blk_stat timer in wbt_disable_default()
2018-12-12 06:47:51 -07:00
blk-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-throttle.c
blk-throttle: fix UAF by deleteing timer in blk_throtl_exit()
2021-09-26 14:09:01 +02:00
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
2021-07-14 16:56:12 +02:00
blk-wbt.h
blk-wbt: introduce a new disable state to prevent false positive by rwb_enabled()
2021-07-14 16:56:12 +02:00
blk-zoned.c
blk-zoned: allow BLKREPORTZONE without CAP_SYS_ADMIN
2021-09-18 13:40:06 +02:00
blk.h
blk-throtl: optimize IOPS throttle for large IO scenarios
2021-09-15 09:50:25 +02:00
bounce.c
block: make bio_crypt_clone() able to fail
2020-10-05 10:47:43 -06:00
bsg-lib.c
block: drop double zeroing
2020-09-23 09:18:13 -06:00
bsg.c
scsi: bsg: Remove support for SCSI_IOCTL_SEND_COMMAND
2021-09-18 13:40:11 +02:00
cmdline-parser.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
elevator.c
block: return ELEVATOR_DISCARD_MERGE if possible
2021-09-15 09:50:28 +02:00
genhd.c
block: Suppress uevent for hidden device when removed
2021-03-30 14:31:52 +02:00
ioctl.c
block: return -EBUSY when there are open partitions in blkdev_reread_part
2021-04-28 13:39:59 +02:00
ioprio.c
block: grant IOPRIO_CLASS_RT to CAP_SYS_NICE
2020-09-01 19:38:33 -06:00
Kconfig
blk-wbt: Remove obsolete multiqueue I/O scheduling comment
2020-09-01 16:49:26 -06:00
Kconfig.iosched
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
keyslot-manager.c
block/keyslot-manager: prevent crash when num_slots=1
2020-11-20 11:52:52 -07:00
kyber-iosched.c
kyber: fix out of bounds access when preempted
2021-05-19 10:13:13 +02:00
Makefile
blk-mq: merge blk-softirq.c into blk-mq.c
2020-06-24 09:15:56 -06:00
mq-deadline.c
block: return ELEVATOR_DISCARD_MERGE if possible
2021-09-15 09:50:28 +02:00
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
drivers-5.10-2020-10-12
2020-10-13 13:04:41 -07:00
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