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Ming Lei 393cd8ffd8 blk-cgroup: fix rcu lockdep warning in blkg_lookup() 
blkg_lookup() is called with either queue_lock or rcu read lock, so
use rcu_dereference_check(lockdep_is_held(&q->queue_lock)) for
retrieving 'blkg', which way models the check exactly for covering
queue lock or rcu read lock.

Fix lockdep warning of "block/blk-cgroup.h:254 suspicious rcu_dereference_check() usage!"
from blkg_lookup().

Tested-by: Changhui Zhong <czhong@redhat.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Yu Kuai <yukuai3@huawei.com>
Fixes: 83462a6c971c ("blkcg: Drop unnecessary RCU read [un]locks from blkg_conf_prep/finish()")
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20231219012833.2129540-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-01-04 16:08:54 -07:00
..
partitions
block: remove support for the host aware zone model
2023-12-19 20:17:43 -07:00
badblocks.c
badblocks: switch to the improved badblock handling code
2023-09-26 00:44:33 -06:00
bdev.c
block: update the stable_writes flag in bdev_add
2023-11-20 15:05:18 +01:00
bfq-cgroup.c
blkcg: Restructure blkg_conf_prep() and friends
2023-04-13 06:46:49 -06:00
bfq-iosched.c
SCSI misc on 20230629
2023-06-30 11:57:07 -07:00
bfq-iosched.h
block, bfq: remove BFQ_WEIGHT_LEGACY_DFL
2023-04-06 16:17:32 -06:00
bfq-wf2q.c
block, bfq: inject I/O to underutilized actuators
2023-01-29 15:18:33 -07:00
bio-integrity.c
block: bio-integrity: directly map user buffers
2023-12-01 18:29:00 -07:00
bio.c
block: support adding less than len in bio_add_hw_page
2023-12-15 07:34:27 -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
Revert "blk-cgroup: pin the gendisk in struct blkcg_gq"
2023-02-14 14:24:09 -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
blk-cgroup: don't use removal safe list iterators
2024-01-04 16:07:56 -07:00
blk-cgroup.h
blk-cgroup: fix rcu lockdep warning in blkg_lookup()
2024-01-04 16:08:54 -07:00
blk-core.c
block: reject invalid operation in submit_bio_noacct
2023-12-26 09:27:14 -07:00
blk-crypto-fallback.c
blk-crypto: dynamically allocate fallback profile
2023-08-18 15:00:39 -06:00
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
blk-mq: remove RQF_MQ_INFLIGHT
2023-09-22 08:52:13 -06:00
blk-ia-ranges.c
block: make kobj_type structures constant
2023-02-09 09:38:16 -07:00
blk-integrity.c
blk-integrity: register sysfs attributes on struct device
2023-04-26 18:22:50 -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 queue stats accounting
2023-08-09 16:04:14 -06:00
blk-iolatency.c
block: fix bad lockdep annotation in blk-iolatency
2023-08-10 17:24:53 -06:00
blk-ioprio.c
blk-ioprio: Introduce promote-to-rt policy
2023-06-06 22:26:26 -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 pin count management when merging same-page segments
2023-09-06 07:32:27 -06:00
blk-merge.c
block: remove two comments in bio_split_discard
2023-12-29 08:44:12 -07:00
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-zoned.c
block: move zone related fields to struct gendisk
2022-07-06 06:46:26 -06:00
blk-mq-debugfs.c
blk-mq: remove RQF_MQ_INFLIGHT
2023-09-22 08:52:13 -06:00
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
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: cleanup __blk_mq_sched_dispatch_requests
2023-04-13 06:57:18 -06:00
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: skip QUEUE_FLAG_STATS and rq-qos for passthrough io
2023-12-01 18:29:18 -07:00
blk-mq.h
blk-mq: update driver tags request table when start request
2023-09-22 08:52:13 -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: floor the discard granularity to the physical block size
2024-01-04 16:05:49 -07:00
blk-stat.c
blk-mq: include <linux/blk-mq.h> in block/blk-mq.h
2023-04-13 06:52:29 -06:00
blk-stat.h
block: make queue stat accounting a reference
2021-12-14 17:23:05 -07:00
blk-sysfs.c
block: rename and document BLK_DEF_MAX_SECTORS
2023-12-27 10:46:01 -07:00
blk-throttle.c
blk-throttle: fix lockdep warning of "cgroup_mutex or RCU read lock required!"
2023-11-17 10:48:58 -07:00
blk-throttle.h
blk-throttle: print signed value 'carryover_bytes/ios' for user
2023-08-30 10:15:01 -06:00
blk-timeout.c
block: blk-timeout: delete duplicated word
2020-07-31 16:29:47 -06:00
blk-wbt.c
blk-wbt: remove the separate write cache tracking
2023-12-26 09:28:10 -07:00
blk-wbt.h
blk-wbt: remove the separate write cache tracking
2023-12-26 09:28:10 -07:00
blk-zoned.c
block: export disk_clear_zoned()
2023-12-20 20:32:12 -07:00
blk.h
block: simplify disk_set_zoned
2023-12-19 20:17:43 -07:00
bounce.c
block: change the blk_queue_bounce calling convention
2022-08-02 17:22:54 -06:00
bsg-lib.c
scsi: replace the fmode_t argument to ->sg_io_fn with a simple bool
2023-06-12 08:04:04 -06:00
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
block: don't return -EINVAL for not found names in devt_from_devname
2023-06-22 09:09:33 -06:00
elevator.c
blk-mq: release scheduler resource when request completes
2023-08-19 07:47:17 -06:00
elevator.h
blk-mq: pass a flags argument to elevator_type->insert_requests
2023-04-13 06:52:30 -06:00
fops.c
block: Use bdev_open_by_dev() in blkdev_open()
2023-10-28 13:29:16 +02:00
genhd.c
block: add check of 'minors' and 'first_minor' in device_add_disk()
2023-12-19 08:23:12 -07:00
holder.c
block: don't allow a disk link holder to itself
2022-11-16 15:19:56 -07:00
ioctl.c
block: add check that partition length needs to be aligned with block size
2023-12-13 08:19:14 -07:00
ioprio.c
scsi: block: Improve ioprio value validity checks
2023-06-16 12:04:30 -04:00
Kconfig
powerpc/pseries: PLPKS SED Opal keystore support
2023-10-17 09:10:06 -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: move the code to do early boot lookup of block devices to block/
2023-06-05 10:57:40 -06:00
mq-deadline.c
block/mq-deadline: use correct way to throttling write requests
2023-08-08 15:46:41 -06:00
opal_proto.h
block: sed-opal: Implement IOC_OPAL_REVERT_LSP
2023-08-22 11:10:26 -06:00
sed-opal.c
for-6.7/block-2023-10-30
2023-11-01 12:30:07 -10:00
t10-pi.c
block: add pi for extended integrity
2022-03-07 12:48:35 -07:00