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Ming Lei e52d0eb48e blk-throttle: fix lockdep warning of "cgroup_mutex or RCU read lock required!" 
[ Upstream commit 27b13e209ddca5979847a1b57890e0372c1edcee ]

Inside blkg_for_each_descendant_pre(), both
css_for_each_descendant_pre() and blkg_lookup() requires RCU read lock,
and either cgroup_assert_mutex_or_rcu_locked() or rcu_read_lock_held()
is called.

Fix the warning by adding rcu read lock.

Reported-by: Changhui Zhong <czhong@redhat.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20231117023527.3188627-2-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-12-20 17:00:21 +01:00
..
partitions
block/partition: fix signedness issue for Amiga partitions
2023-07-19 16:22:17 +02:00
badblocks.c
block/badblocks: Remove redundant assignments
2022-04-23 07:15:26 -06:00
bdev.c
vfs: support STATX_DIOALIGN on block devices
2022-09-11 19:47:12 -05:00
bfq-cgroup.c
block, bfq: fix uaf for bfqq in bic_set_bfqq()
2023-02-09 11:28:06 +01:00
bfq-iosched.c
block, bfq: Fix division by zero error on zero wsum
2023-05-24 17:32:38 +01:00
bfq-iosched.h
block, bfq: remove unused variable for bfq_queue
2022-10-20 05:46:49 -07:00
bfq-wf2q.c
block, bfq: remove useless parameter for bfq_add/del_bfqq_busy()
2022-08-22 10:07:56 -06:00
bio-integrity.c
block: factor out a bvec_set_page helper
2023-09-23 11:11:08 +02:00
bio.c
block: factor out a bvec_set_page helper
2023-09-23 11:11:08 +02:00
blk-cgroup-fc-appid.c
cgroup: Homogenize cgroup_get_from_id() return value
2022-08-26 10:57:41 -10:00
blk-cgroup-rwstat.c
blk-cgroup: Fix the recursive blkg rwstat
2021-03-05 11:32:15 -07:00
blk-cgroup-rwstat.h
block: Use the new blk_opf_t type
2022-07-14 12:14:30 -06:00
blk-cgroup.c
block: Skip destroyed blkg when restart in blkg_destroy_all()
2023-05-17 11:53:33 +02:00
blk-cgroup.h
blk-cgroup: pass a gendisk to blkcg_init_queue and blkcg_exit_queue
2022-09-26 19:09:31 -06:00
blk-core.c
blk-core: use pr_warn_ratelimited() in bio_check_ro()
2023-11-20 11:52:17 +01:00
blk-crypto-fallback.c
blk-crypto: dynamically allocate fallback profile
2023-08-23 17:52:39 +02:00
blk-crypto-internal.h
blk-mq: release crypto keyslot before reporting I/O complete
2023-05-11 23:03:00 +09:00
blk-crypto-profile.c
blk-crypto: use dynamic lock class for blk_crypto_profile::lock
2023-07-23 13:49:21 +02:00
blk-crypto-sysfs.c
blk-crypto: show crypto capabilities in sysfs
2022-02-28 06:40:23 -07:00
blk-crypto.c
blk-crypto: make blk_crypto_evict_key() more robust
2023-05-11 23:03:01 +09:00
blk-flush.c
block: change request end_io handler to pass back a return value
2022-09-30 07:49:09 -06:00
blk-ia-ranges.c
block: simplify disk_set_independent_access_ranges
2022-06-29 08:36:46 -06:00
blk-integrity.c
blk-crypto: remove blk_crypto_unregister()
2021-11-29 06:38:51 -07:00
blk-ioc.c
block: fix default IO priority handling again
2022-06-27 06:29:12 -06:00
blk-iocost.c
blk-iocost: use spin_lock_irqsave in adjust_inuse_and_calc_cost
2023-07-19 16:20:55 +02:00
blk-iolatency.c
blk-cgroup: pass a gendisk to blkcg_schedule_throttle
2022-09-26 19:17:28 -06:00
blk-ioprio.c
blk-ioprio: pass a gendisk to blk_ioprio_init and blk_ioprio_exit
2022-09-26 19:09:31 -06:00
blk-ioprio.h
blk-ioprio: pass a gendisk to blk_ioprio_init and blk_ioprio_exit
2022-09-26 19:09:31 -06:00
blk-lib.c
blk-lib: fix blkdev_issue_secure_erase
2022-09-15 00:25:17 -06:00
blk-map.c
block: fix bio-cache for passthru IO
2023-06-05 09:26:21 +02:00
blk-merge.c
blk-mq: release crypto keyslot before reporting I/O complete
2023-05-11 23:03:00 +09:00
blk-mq-cpumap.c
block: Change the return type of blk_mq_map_queues() into void
2022-08-22 10:07:53 -06:00
blk-mq-debugfs-zoned.c
block: move zone related fields to struct gendisk
2022-07-06 06:46:26 -06:00
blk-mq-debugfs.c
blk-mq: fix potential io hang by wrong 'wake_batch'
2023-07-19 16:20:55 +02:00
blk-mq-debugfs.h
block: remove per-disk debugfs files in blk_unregister_queue
2022-06-17 07:31:05 -06:00
blk-mq-pci.c
block: Change the return type of blk_mq_map_queues() into void
2022-08-22 10:07:53 -06:00
blk-mq-rdma.c
block: Change the return type of blk_mq_map_queues() into void
2022-08-22 10:07:53 -06:00
blk-mq-sched.c
blk-mq: correct stale comment of .get_budget
2023-03-10 09:32:44 +01:00
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: fix possible memleak when register 'hctx' failed
2022-12-31 13:33:03 +01:00
blk-mq-tag.c
blk-mq: fix potential io hang by wrong 'wake_batch'
2023-07-19 16:20:55 +02:00
blk-mq-tag.h
blk-mq: blk_mq_tag_busy is no need to return a value
2022-06-27 06:29:12 -06:00
blk-mq-virtio.c
block: Change the return type of blk_mq_map_queues() into void
2022-08-22 10:07:53 -06:00
blk-mq.c
blk-mq: Fix stall due to recursive flush plug
2023-08-03 10:23:48 +02:00
blk-mq.h
blk-mq: fix potential io hang by wrong 'wake_batch'
2023-07-19 16:20:55 +02:00
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
block/rq_qos: Use atomic_try_cmpxchg in atomic_inc_below
2022-07-12 14:38:52 -06:00
blk-rq-qos.h
block/blk-rq-qos: delete useless enmu RQ_QOS_IOPRIO
2022-09-21 19:50:53 -06:00
blk-settings.c
block: don't allow enabling a cache on devices that don't support it
2023-09-13 09:42:40 +02:00
blk-stat.c
blk-stat: fix QUEUE_FLAG_STATS clear
2023-05-11 23:03:00 +09:00
blk-stat.h
block: make queue stat accounting a reference
2021-12-14 17:23:05 -07:00
blk-sysfs.c
block: fix use-after-free of q->q_usage_counter
2023-10-10 22:00:37 +02:00
blk-throttle.c
blk-throttle: fix lockdep warning of "cgroup_mutex or RCU read lock required!"
2023-12-20 17:00:21 +01:00
blk-throttle.h
blk-throttle: pass a gendisk to blk_throtl_cancel_bios
2022-09-26 19:17:28 -06:00
blk-timeout.c
block: blk-timeout: delete duplicated word
2020-07-31 16:29:47 -06:00
blk-wbt.c
blk-wbt: fix that 'rwb->wc' is always set to 1 in wbt_init()
2022-10-09 07:48:16 -06:00
blk-wbt.h
blk-wbt: remove wbt_track stub
2022-03-31 12:58:38 -06:00
blk-zoned.c
block: adapt blk_mq_plug() to not plug for writes that require a zone lock
2022-09-29 07:45:47 -06:00
blk.h
block: Revert "block: Do not reread partition table on exclusively open device"
2023-03-17 08:50:20 +01:00
bounce.c
block: change the blk_queue_bounce calling convention
2022-08-02 17:22:54 -06:00
bsg-lib.c
blk-mq: Drop blk_mq_ops.timeout 'reserved' arg
2022-07-06 06:33:53 -06:00
bsg.c
scsi: core: bsg: Remove usage of the deprecated ida_simple_xxx() API
2022-06-21 21:22:51 -04:00
disk-events.c
block: increment diskseq on all media change events
2023-07-19 16:21:47 +02:00
elevator.c
blk-mq: use quiesced elevator switch when reinitializing queues
2022-09-27 09:58:56 -06:00
elevator.h
block: Use the new blk_opf_t type
2022-07-14 12:14:30 -06:00
fops.c
block: Deny writable memory mapping if block is read-only
2023-06-09 10:34:17 +02:00
genhd.c
block: fix blktrace debugfs entries leakage
2023-07-19 16:20:58 +02:00
holder.c
block: remove WARN_ON() from bd_link_disk_holder
2022-06-23 07:48:05 -06:00
ioctl.c
block: don't add or resize partition on the disk with GENHD_FL_NO_PART
2023-09-13 09:43:02 +02:00
ioprio.c
block: Fix handling of tasks without ioprio in ioprio_get(2)
2022-06-27 06:29:12 -06:00
Kconfig
block: remove "select BLK_RQ_IO_DATA_LEN" from BLK_CGROUP_IOCOST dependency
2022-06-29 08:35:57 -06:00
Kconfig.iosched
block: only build the icq tracking code when needed
2021-12-16 10:59:02 -07:00
kyber-iosched.c
block/kyber: Use the new blk_opf_t type
2022-07-14 12:14:30 -06:00
Makefile
blk-cgroup: move blkcg_{get,set}_fc_appid out of line
2022-05-02 14:06:20 -06:00
mq-deadline.c
block/mq-deadline: use correct way to throttling write requests
2023-09-13 09:42:42 +02:00
opal_proto.h
block: sed-opal: Add ioctl to return device status
2022-08-22 07:52:51 -06:00
sed-opal.c
block: sed-opal: kmalloc the cmd/resp buffers
2022-11-08 07:14:35 -07:00
t10-pi.c
block: add pi for extended integrity
2022-03-07 12:48:35 -07:00