Yu Kuai 0e456dba86 block, bfq: choose the last bfqq from merge chain in bfq_setup_cooperator() ... Consider the following merge chain: Process 1 Process 2 Process 3 Process 4 (BIC1) (BIC2) (BIC3) (BIC4) Λ | | | \--------------\ \-------------\ \-------------\| V V V bfqq1--------->bfqq2---------->bfqq3----------->bfqq4 IO from Process 1 will get bfqf2 from BIC1 first, then bfq_setup_cooperator() will found bfqq2 already merged to bfqq3 and then handle this IO from bfqq3. However, the merge chain can be much deeper and bfqq3 can be merged to other bfqq as well. Fix this problem by iterating to the last bfqq in bfq_setup_cooperator(). Fixes: 36eca89483 ("block, bfq: add Early Queue Merge (EQM)") Signed-off-by: Yu Kuai <yukuai3@huawei.com> Link: https://lore.kernel.org/r/20240902130329.3787024-3-yukuai1@huaweicloud.com Signed-off-by: Jens Axboe <axboe@kernel.dk>		2024-09-03 09:51:54 -06:00
..
partitions	Compactifying bdev flags	2024-05-21 13:02:56 -07:00
badblocks.c	badblocks: avoid checking invalid range in badblocks_check()	2023-12-23 18:38:08 -07:00
bdev.c	for-6.11/block-20240710	2024-07-15 14:20:22 -07:00
bfq-cgroup.c	block, bfq: remove blkg_path()	2024-06-18 09:22:45 -06:00
bfq-iosched.c	block, bfq: choose the last bfqq from merge chain in bfq_setup_cooperator()	2024-09-03 09:51:54 -06:00
bfq-iosched.h	block, bfq: remove blkg_path()	2024-06-18 09:22:45 -06:00
bfq-wf2q.c	block, bfq: inject I/O to underutilized actuators	2023-01-29 15:18:33 -07:00
bio-integrity.c	for-6.11/block-post-20240722	2024-07-22 11:04:09 -07:00
bio.c	for-6.11/block-post-20240722	2024-07-22 11:04:09 -07:00
blk-cgroup-fc-appid.c	block: Replace all non-returning strlcpy with strscpy	2023-06-01 09:13:31 -06:00
blk-cgroup-rwstat.c	blk-cgroup: use group allocation/free of per-cpu counters API	2024-04-03 09:10:17 -06:00
blk-cgroup-rwstat.h	block: Use the new blk_opf_t type	2022-07-14 12:14:30 -06:00
blk-cgroup.c	blk-ioprio: remove per-disk structure	2024-07-28 16:47:51 -06:00
blk-cgroup.h	blk-cgroup: Remove unused declaration blkg_path()	2024-08-16 15:07:27 -06:00
blk-core.c	block: avoid polling configuration errors	2024-07-19 09:35:35 -06:00
blk-crypto-fallback.c	block, fs: Restore the per-bio/request data lifetime fields	2024-02-06 14:31:05 +01:00
blk-crypto-internal.h	blk-crypto: remove blk_crypto_insert_cloned_request()	2023-03-16 09:35:09 -06:00
blk-crypto-profile.c	blk-crypto: use dynamic lock class for blk_crypto_profile::lock	2023-07-05 16:36:12 -06:00
blk-crypto-sysfs.c	block: make kobj_type structures constant	2023-02-09 09:38:16 -07:00
blk-crypto.c	blk-crypto: make blk_crypto_evict_key() more robust	2023-03-16 09:35:09 -06:00
blk-flush.c	for-6.11/block-20240710	2024-07-15 14:20:22 -07:00
blk-ia-ranges.c	block: make kobj_type structures constant	2023-02-09 09:38:16 -07:00
blk-integrity.c	block: cleanup flag_{show,store}	2024-06-17 10:13:37 -06:00
blk-ioc.c	blk-ioc: fix recursive spin_lock/unlock_irq() in ioc_clear_queue()	2023-06-07 07:51:00 -06:00
blk-iocost.c	blk_iocost: fix more out of bound shifts	2024-08-26 14:13:22 -06:00
blk-iolatency.c	block: add blk_time_get_ns() and blk_time_get() helpers	2024-02-05 10:07:22 -07:00
blk-ioprio.c	blk-ioprio: remove per-disk structure	2024-07-28 16:47:51 -06:00
blk-ioprio.h	blk-ioprio: remove per-disk structure	2024-07-28 16:47:51 -06:00
blk-lib.c	blk-lib: check for kill signal in ioctl BLKZEROOUT	2024-07-05 00:53:15 -06:00
blk-map.c	block: don't free the integrity payload in bio_integrity_unmap_free_user	2024-07-03 10:21:16 -06:00
blk-merge.c	block: properly handle REQ_OP_ZONE_APPEND in __bio_split_to_limits	2024-08-29 04:32:32 -06:00
blk-mq-cpumap.c	blk-mq: include <linux/blk-mq.h> in block/blk-mq.h	2023-04-13 06:52:29 -06:00
blk-mq-debugfs.c	block: Catch possible entries missing from rqf_name[]	2024-07-19 09:32:49 -06:00
blk-mq-debugfs.h	block: Replace zone_wlock debugfs entry with zone_wplugs entry	2024-04-17 08:44:03 -06:00
blk-mq-pci.c	blk-mq: include <linux/blk-mq.h> in block/blk-mq.h	2023-04-13 06:52:29 -06:00
blk-mq-sched.c	blk-mq: Remove the hctx 'run' debugfs attribute	2024-01-17 14:16:34 -07:00
blk-mq-sched.h	blk-mq: make sure elevator callbacks aren't called for passthrough request	2023-05-18 19:42:54 -06:00
blk-mq-sysfs.c	blk-mq: include <linux/blk-mq.h> in block/blk-mq.h	2023-04-13 06:52:29 -06:00
blk-mq-tag.c	for-6.5/block-2023-06-23	2023-06-26 12:47:20 -07:00
blk-mq-virtio.c	blk-mq: include <linux/blk-mq.h> in block/blk-mq.h	2023-04-13 06:52:29 -06:00
blk-mq.c	block: rework bio splitting	2024-08-29 04:32:32 -06:00
blk-mq.h	block: Relocate BLK_MQ_CPU_WORK_BATCH	2024-07-19 09:32:48 -06:00
blk-pm.c	block: Remove blk_set_runtime_active()	2023-11-20 10:22:40 -07:00
blk-pm.h	block: Remove unused blk_pm_*() function definitions	2021-02-22 06:33:48 -07:00
blk-rq-qos.c	block: correct stale comment in rq_qos_wait	2023-09-18 14:15:28 -06:00
blk-rq-qos.h	block: skip QUEUE_FLAG_STATS and rq-qos for passthrough io	2023-12-01 18:29:18 -07:00
blk-settings.c	block: Validate logical block size in blk_validate_limits()	2024-07-09 00:00:17 -06:00
blk-stat.c	blk-throttle: remove CONFIG_BLK_DEV_THROTTLING_LOW	2024-05-09 09:44:55 -06:00
blk-stat.h	block: delete redundant function declaration	2024-05-27 13:58:06 -06:00
blk-sysfs.c	block: pass a gendisk to the queue_sysfs_entry methods	2024-06-28 15:06:16 -06:00
blk-throttle.c	blk-throttle: fix lower control under super low iops limit	2024-06-28 14:55:02 -06:00
blk-throttle.h	blk-throttle: Fix incorrect display of io.max	2024-05-30 19:44:29 -06:00
blk-timeout.c	block: blk-timeout: delete duplicated word	2020-07-31 16:29:47 -06:00
blk-wbt.c	blk-wbt: don't throttle swap writes in direct reclaim	2024-07-01 06:51:53 -06:00
blk-wbt.h	blk-wbt: remove the separate write cache tracking	2023-12-26 09:28:10 -07:00
blk-zoned.c	for-6.11/block-20240710	2024-07-15 14:20:22 -07:00
blk.h	block: don't use bio_split_rw on misc operations	2024-08-29 04:32:32 -06:00
bounce.c	block: split integrity support out of bio.h	2024-07-03 10:21:15 -06:00
bsg-lib.c	scsi: bsg: Pass dev to blk_mq_alloc_queue()	2024-05-30 20:22:15 -04:00
bsg.c	SCSI misc on 20230629	2023-06-30 11:57:07 -07:00
disk-events.c	block: move bdev_mark_dead out of disk_check_media_change	2023-10-28 13:29:23 +02:00
early-lookup.c	wrapper for access to ->bd_partno	2024-05-02 17:48:09 -04:00
elevator.c	block: pass a gendisk to the queue_sysfs_entry methods	2024-06-28 15:06:16 -06:00
elevator.h	block: pass a gendisk to the queue_sysfs_entry methods	2024-06-28 15:06:16 -06:00
fops.c	block: clean up the check in blkdev_iomap_begin()	2024-06-27 05:56:35 -06:00
genhd.c	block: fix deadlock between sd_remove & sd_release	2024-07-24 09:51:21 -06:00
holder.c	block: fix deadlock between bd_link_disk_holder and partition scan	2024-02-23 07:44:19 -07:00
ioctl.c	blk-lib: check for kill signal in ioctl BLKZEROOUT	2024-07-05 00:53:15 -06:00
ioprio.c	block: move __get_task_ioprio() into header file	2024-01-08 12:27:39 -07:00
Kconfig	block: remove the blk_integrity_profile structure	2024-06-14 10:20:06 -06:00
Kconfig.iosched	block: Default to use cgroup support for BFQ	2023-01-30 09:42:42 -07:00
kyber-iosched.c	blk-mq: pass a flags argument to elevator_type->insert_requests	2023-04-13 06:52:30 -06:00
Makefile	block: remove the blk_integrity_profile structure	2024-06-14 10:20:06 -06:00
mq-deadline.c	block/mq-deadline: Fix the tag reservation code	2024-07-02 08:47:45 -06:00
opal_proto.h	block: sed-opal: handle empty atoms when parsing response	2024-02-16 15:52:45 -07:00
sed-opal.c	block: sed-opal: avoid possible wrong address reference in read_sed_opal_key()	2024-06-12 10:53:20 -06:00
t10-pi.c	block: constify ext_pi_ref_escape()	2024-08-13 06:20:02 -06:00