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block: track queue dying state automatically for modeling queue freeze lockdep

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Now we only verify the outmost freeze & unfreeze in current context in case
that !q->mq_freeze_depth, so it is reliable to save queue lying state when
we want to lock the freeze queue since the state is one per-task variable
now.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20241127135133.3952153-5-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ming Lei
2024-11-27 21:51:30 +08:00
committed by Jens Axboe
parent b9d4eee7e0
commit f6661b1d05
4 changed files with 17 additions and 13 deletions
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6
include/linux/blkdev.h
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@@ -581,8 +581,12 @@ struct request_queue {
#ifdef CONFIG_LOCKDEP
struct task_struct *mq_freeze_owner;
int mq_freeze_owner_depth;
/* Records disk state in current context, used in unfreeze queue */
/*
* Records disk & queue state in current context, used in unfreeze
* queue
*/
bool mq_freeze_disk_dead;
bool mq_freeze_queue_dying;
#endif
wait_queue_head_t mq_freeze_wq;
/*