Jan Kara 09df6a75ff bfq: Fix warning in bfqq_request_over_limit() ...

People are occasionally reporting a warning bfqq_request_over_limit()
triggering reporting that BFQ's idea of cgroup hierarchy (and its depth)
does not match what generic blkcg code thinks. This can actually happen
when bfqq gets moved between BFQ groups while bfqq_request_over_limit()
is running. Make sure the code is safe against BFQ queue being moved to
a different BFQ group.

Fixes: 76f1df88bb ("bfq: Limit number of requests consumed by each cgroup")
CC: stable@vger.kernel.org
Link: https://lore.kernel.org/all/CAJCQCtTw_2C7ZSz7as5Gvq=OmnDiio=HRkQekqWpKot84sQhFA@mail.gmail.com/
Reported-by: Chris Murphy <lists@colorremedies.com>
Reported-by: "yukuai (C)" <yukuai3@huawei.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220407140738.9723-1-jack@suse.cz
Signed-off-by: Jens Axboe <axboe@kernel.dk>

2022-04-29 06:45:37 -06:00

..

partitions

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badblocks.c

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bdev.c

Merge branch 'akpm' (patches from Andrew)

2022-03-22 16:11:53 -07:00

bfq-cgroup.c

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bfq-iosched.c

bfq: Fix warning in bfqq_request_over_limit()

2022-04-29 06:45:37 -06:00

bfq-iosched.h

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bfq-wf2q.c

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bio-integrity.c

Merge tag 'for-5.18/block-2022-03-18' of git://git.kernel.dk/linux-block

2022-03-21 16:48:55 -07:00

bio.c

block: fix offset/size check in bio_trim()

2022-04-14 10:15:24 -06:00

blk-cgroup-rwstat.c

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blk-cgroup-rwstat.h

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blk-cgroup.c

Merge tag 'for-5.18/block-2022-04-01' of git://git.kernel.dk/linux-block

2022-04-01 16:20:00 -07:00

blk-cgroup.h

block: don't merge across cgroup boundaries if blkcg is enabled

2022-03-14 19:14:37 -06:00

blk-core.c

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

2022-03-24 19:37:53 -07:00

blk-crypto-fallback.c

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blk-crypto-internal.h

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blk-crypto-profile.c

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blk-crypto-sysfs.c

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blk-crypto.c

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blk-flush.c

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blk-ia-ranges.c

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blk-integrity.c

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blk-ioc.c

block: restore the old set_task_ioprio() behaviour wrt PF_EXITING

2022-03-28 06:34:11 -06:00

blk-iocost.c

iocost: don't reset the inuse weight of under-weighted debtors

2022-04-27 08:41:11 -06:00

blk-iolatency.c

block: fix rq-qos breakage from skipping rq_qos_done_bio()

2022-03-14 14:23:13 -06:00

blk-ioprio.c

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blk-ioprio.h

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blk-lib.c

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

2022-03-24 19:37:53 -07:00

blk-map.c

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blk-merge.c

Merge tag 'for-5.18/write-streams-2022-03-18' of git://git.kernel.dk/linux-block

2022-03-26 11:51:46 -07:00

blk-mq-cpumap.c

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blk-mq-debugfs-zoned.c

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blk-mq-debugfs.c

Merge tag 'for-5.18/write-streams-2022-03-18' of git://git.kernel.dk/linux-block

2022-03-26 11:51:46 -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

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blk-mq-rdma.c

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blk-mq-sched.c

block: limit request dispatch loop duration

2022-03-17 20:31:43 -06:00

blk-mq-sched.h

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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

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blk-mq-virtio.c

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blk-mq.c

Revert "block: inherit request start time from bio for BLK_CGROUP"

2022-04-27 13:51:28 -06:00

blk-mq.h

blk-mq: manage hctx map via xarray

2022-03-08 19:39:38 -07:00

blk-pm.c

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blk-pm.h

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blk-rq-qos.c

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blk-rq-qos.h

block: fix rq-qos breakage from skipping rq_qos_done_bio()

2022-03-14 14:23:13 -06:00

blk-settings.c

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blk-stat.c

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blk-stat.h

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blk-sysfs.c

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

2022-03-24 19:37:53 -07:00

blk-throttle.c

block: cancel all throttled bios in del_gendisk()

2022-03-18 09:57:56 -06:00

blk-throttle.h

block: cancel all throttled bios in del_gendisk()

2022-03-18 09:57:56 -06:00

blk-timeout.c

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blk-wbt.c

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blk-wbt.h

blk-wbt: remove wbt_track stub

2022-03-31 12:58:38 -06:00

blk-zoned.c

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

2022-03-24 19:37:53 -07:00

blk.h

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

2022-03-24 19:37:53 -07:00

bounce.c

Merge tag 'for-5.18/write-streams-2022-03-18' of git://git.kernel.dk/linux-block

2022-03-26 11:51:46 -07:00

bsg-lib.c

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bsg.c

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disk-events.c

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elevator.c

Merge tag 'for-5.18/block-2022-03-18' of git://git.kernel.dk/linux-block

2022-03-21 16:48:55 -07:00

elevator.h

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fops.c

Merge tag 'for-5.18/write-streams-2022-03-18' of git://git.kernel.dk/linux-block

2022-03-26 11:51:46 -07:00

genhd.c

Merge tag 'for-5.18/block-2022-04-01' of git://git.kernel.dk/linux-block

2022-04-01 16:20:00 -07:00

holder.c

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ioctl.c

block/compat_ioctl: fix range check in BLKGETSIZE

2022-04-15 06:32:40 -06:00

ioprio.c

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Kconfig

block: add pi for extended integrity

2022-03-07 12:48:35 -07:00

Kconfig.iosched

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kyber-iosched.c

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Makefile

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mq-deadline.c

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opal_proto.h

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sed-opal.c

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t10-pi.c

block: add pi for extended integrity

2022-03-07 12:48:35 -07:00