Jens Axboe 5b2050718d block: ensure plug merging checks the correct queue at least once ... Song reports that a RAID rebuild workload runs much slower recently, and it is seeing a lot less merging than it did previously. The reason is that a previous commit reduced the amount of work we do for plug merging. RAID rebuild interleaves requests between disks, so a last-entry check in plug merging always misses a merge opportunity since we always find a different disk than what we are looking for. Modify the logic such that it's still a one-hit cache, but ensure that we check enough to find the right target before giving up. Fixes: d38a9c04c0 ("block: only check previous entry for plug merge attempt") Reported-and-tested-by: Song Liu <song@kernel.org> Reviewed-by: Song Liu <songliubraving@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2022-03-11 11:08:21 -07:00
..
partitions	block: remove genhd.h	2022-02-02 07:49:59 -07:00
badblocks.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
bdev.c	block: remove redundant semicolon	2022-02-27 14:52:36 -07:00
bfq-cgroup.c	block, bfq: don't move oom_bfqq	2022-02-18 06:13:00 -07:00
bfq-iosched.c	Revert "Revert "block, bfq: honor already-setup queue merges""	2022-03-08 17:56:45 -07:00
bfq-iosched.h	block, bfq: cleanup bfq_bfqq_to_bfqg()	2022-02-18 06:13:00 -07:00
bfq-wf2q.c	block, bfq: cleanup bfq_bfqq_to_bfqg()	2022-02-18 06:13:00 -07:00
bio-integrity.c	block: clone crypto and integrity data in __bio_clone_fast	2022-02-04 07:43:18 -07:00
bio.c	block: remove bio_devname	2022-03-07 06:42:33 -07:00
blk-cgroup-rwstat.c	blk-cgroup: Fix the recursive blkg rwstat	2021-03-05 11:32:15 -07:00
blk-cgroup-rwstat.h	block: partition include/linux/blk-cgroup.h	2022-02-11 10:02:41 -07:00
blk-cgroup.c	blk-cgroup: set blkg iostat after percpu stat aggregation	2022-02-15 14:13:12 -07:00
blk-cgroup.h	block: partition include/linux/blk-cgroup.h	2022-02-11 10:02:41 -07:00
blk-core.c	block: move q_usage_counter release into blk_queue_release	2022-03-08 19:40:01 -07:00
blk-crypto-fallback.c	block: partition include/linux/blk-cgroup.h	2022-02-11 10:02:41 -07:00
blk-crypto-internal.h	blk-crypto: show crypto capabilities in sysfs	2022-02-28 06:40:23 -07:00
blk-crypto-profile.c	blk-crypto: remove blk_crypto_unregister()	2021-11-29 06:38:51 -07:00
blk-crypto-sysfs.c	blk-crypto: show crypto capabilities in sysfs	2022-02-28 06:40:23 -07:00
blk-crypto.c	blk-crypto: show crypto capabilities in sysfs	2022-02-28 06:40:23 -07:00
blk-flush.c	block: pass a block_device and opf to bio_init	2022-02-02 07:49:59 -07:00
blk-ia-ranges.c	block: fix memory leak in disk_register_independent_access_ranges	2022-01-23 09:13:09 -07:00
blk-integrity.c	blk-crypto: remove blk_crypto_unregister()	2021-11-29 06:38:51 -07:00
blk-ioc.c	block: drop needless assignment in set_task_ioprio()	2021-12-23 07:10:07 -07:00
blk-iocost.c	block: partition include/linux/blk-cgroup.h	2022-02-11 10:02:41 -07:00
blk-iolatency.c	block: partition include/linux/blk-cgroup.h	2022-02-11 10:02:41 -07:00
blk-ioprio.c	block: partition include/linux/blk-cgroup.h	2022-02-11 10:02:41 -07:00
blk-ioprio.h	block: Introduce the ioprio rq-qos policy	2021-06-21 15:03:40 -06:00
blk-lib.c	blk-lib: don't check bdev_get_queue() NULL check	2022-02-15 07:51:46 -07:00
blk-map.c	Merge branch 'akpm' (patches from Andrew)	2021-09-03 10:08:28 -07:00
blk-merge.c	block: ensure plug merging checks the correct queue at least once	2022-03-11 11:08:21 -07:00
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: prepare for implementing hctx table via xarray	2022-03-08 17:57:19 -07:00
blk-mq-debugfs.h	blk-mq: manage hctx map via xarray	2022-03-08 19:39:38 -07:00
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	blk-mq: prepare for implementing hctx table via xarray	2022-03-08 17:57:19 -07:00
blk-mq-sched.h	block: move blk_mq_sched_assign_ioc to blk-ioc.c	2021-11-29 06:41:29 -07:00
blk-mq-sysfs.c	blk-mq: prepare for implementing hctx table via xarray	2022-03-08 17:57:19 -07:00
blk-mq-tag.c	blk-mq: manage hctx map via xarray	2022-03-08 19:39:38 -07:00
blk-mq-tag.h	blk-mq: Delete busy_iter_fn	2021-12-06 13:18:47 -07:00
blk-mq-virtio.c	blk-mq: Fix typo in comment	2020-03-17 20:55:21 +01:00
blk-mq.c	block: don't remove hctx debugfs dir from blk_mq_exit_queue	2022-03-08 19:40:01 -07:00
blk-mq.h	blk-mq: manage hctx map via xarray	2022-03-08 19:39:38 -07:00
blk-pm.c	scsi: block: pm: Always set request queue runtime active in blk_post_runtime_resume()	2021-12-22 23:38:29 -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: only mark bio as tracked if it really is tracked	2021-10-18 08:50:47 -06:00
blk-settings.c	block: Fix partition check for host-aware zoned block devices	2021-10-27 06:58:01 -06:00
blk-stat.c	block: make queue stat accounting a reference	2021-12-14 17:23:05 -07:00
blk-stat.h	block: make queue stat accounting a reference	2021-12-14 17:23:05 -07:00
blk-sysfs.c	block: move blk_exit_queue into disk_release	2022-03-08 19:40:01 -07:00
blk-throttle.c	block: revert 4f1e9630af ("blk-throtl: optimize IOPS throttle for large IO scenarios")	2022-02-16 19:42:28 -07:00
blk-throttle.h	block: revert 4f1e9630af ("blk-throtl: optimize IOPS throttle for large IO scenarios")	2022-02-16 19:42:28 -07:00
blk-timeout.c	block: blk-timeout: delete duplicated word	2020-07-31 16:29:47 -06:00
blk-wbt.c	blk-wbt: prevent NULL pointer dereference in wb_timer_fn	2021-10-19 06:13:41 -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	block: pass a block_device and opf to bio_init	2022-02-02 07:49:59 -07:00
blk.h	blk-mq: do not include passthrough requests in I/O accounting	2022-03-08 19:39:52 -07:00
bounce.c	block: partition include/linux/blk-cgroup.h	2022-02-11 10:02:41 -07:00
bsg-lib.c	block: remove the gendisk argument to blk_execute_rq	2021-11-29 06:41:29 -07:00
bsg.c	scsi: bsg: Fix device unregistration	2021-09-14 00:22:15 -04:00
disk-events.c	block: remove genhd.h	2022-02-02 07:49:59 -07:00
elevator.c	block: do more work in elevator_exit	2022-03-08 19:40:01 -07:00
elevator.h	block: move elevator.h to block/	2021-10-18 06:17:01 -06:00
fops.c	block: pass a block_device and opf to bio_init	2022-02-02 07:49:59 -07:00
genhd.c	block: move rq_qos_exit() into disk_release()	2022-03-08 19:40:01 -07:00
holder.c	block: remove genhd.h	2022-02-02 07:49:59 -07:00
ioctl.c	block: merge disk_scan_partitions and blkdev_reread_part	2021-11-29 06:35:21 -07:00
ioprio.c	for-5.17/block-2022-01-11	2022-01-12 10:26:52 -08:00
Kconfig	block: default BLOCK_LEGACY_AUTOLOAD to y	2022-02-27 14:49:23 -07:00
Kconfig.iosched	block: only build the icq tracking code when needed	2021-12-16 10:59:02 -07:00
kyber-iosched.c	block: make queue stat accounting a reference	2021-12-14 17:23:05 -07:00
Makefile	blk-crypto: show crypto capabilities in sysfs	2022-02-28 06:40:23 -07:00
mq-deadline.c	block: fix async_depth sysfs interface for mq-deadline	2022-01-20 10:54:02 -07:00
opal_proto.h	block: sed-opal: Change the check condition for regular session validity	2020-03-12 08:00:10 -06:00
sed-opal.c	block: remove genhd.h	2022-02-02 07:49:59 -07:00
t10-pi.c	block: move integrity handling out of <linux/blkdev.h>	2021-10-18 06:17:02 -06:00