Song Liu 9a14014df7 blk-mq: allow 4x BLK_MAX_REQUEST_COUNT at blk_plug for multiple_queues ...

[ Upstream commit 7f2a6a69f7 ]

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

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bfq-cgroup.c

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bfq-iosched.c

block, bfq: honor already-setup queue merges

2021-09-22 12:28:01 +02:00

bfq-iosched.h

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bfq-wf2q.c

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bio-integrity.c

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bio.c

bio: fix page leak bio_add_hw_page failure

2021-09-15 09:50:47 +02:00

blk-cgroup-rwstat.c

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blk-cgroup-rwstat.h

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blk-cgroup.c

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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

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blk-crypto-internal.h

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blk-crypto.c

blk-crypto: fix check for too-large dun_bytes

2021-09-15 09:50:30 +02:00

blk-exec.c

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blk-flush.c

blk-mq: fix is_flush_rq

2021-09-12 08:58:27 +02:00

blk-integrity.c

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blk-ioc.c

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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

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blk-map.c

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blk-merge.c

block: return ELEVATOR_DISCARD_MERGE if possible

2021-09-15 09:50:28 +02:00

blk-mq-cpumap.c

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blk-mq-debugfs-zoned.c

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blk-mq-debugfs.c

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blk-mq-debugfs.h

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blk-mq-pci.c

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blk-mq-rdma.c

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blk-mq-sched.c

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blk-mq-sched.h

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blk-mq-sysfs.c

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blk-mq-tag.c

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blk-mq-tag.h

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blk-mq-virtio.c

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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

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blk-pm.c

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blk-pm.h

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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

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blk-settings.c

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blk-stat.c

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blk-stat.h

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blk-sysfs.c

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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

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blk-wbt.c

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blk-wbt.h

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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

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bsg-lib.c

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bsg.c

scsi: bsg: Remove support for SCSI_IOCTL_SEND_COMMAND

2021-09-18 13:40:11 +02:00

cmdline-parser.c

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elevator.c

block: return ELEVATOR_DISCARD_MERGE if possible

2021-09-15 09:50:28 +02:00

genhd.c

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ioctl.c

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ioprio.c

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Kconfig

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Kconfig.iosched

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keyslot-manager.c

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kyber-iosched.c

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Makefile

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mq-deadline.c

block: return ELEVATOR_DISCARD_MERGE if possible

2021-09-15 09:50:28 +02:00

opal_proto.h

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scsi_ioctl.c

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sed-opal.c

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t10-pi.c

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