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block: Annotate the queue limits functions

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Let the thread-safety checker verify whether every start of a queue
limits update is followed by a call to a function that finishes a queue
limits update.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@kernel.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://patch.msgid.link/8f71062b6d0fcf2b80bc8cda701c453224755439.1780682325.git.bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bart Van Assche 2026-06-05 11:00:54 -07:00 committed by Jens Axboe
parent 7e712f292e
commit 08d912bc44
1 changed files with 6 additions and 3 deletions
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9
include/linux/blkdev.h
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@ -1092,15 +1092,17 @@ static inline unsigned int blk_boundary_sectors_left(sector_t offset,
*/
static inline struct queue_limits
queue_limits_start_update(struct request_queue *q)
__acquires(&q->limits_lock)
{
mutex_lock(&q->limits_lock);
return q->limits;
}
int queue_limits_commit_update_frozen(struct request_queue *q,
struct queue_limits *lim);
struct queue_limits *lim) __releases(&q->limits_lock);
int queue_limits_commit_update(struct request_queue *q,
struct queue_limits *lim);
int queue_limits_set(struct request_queue *q, struct queue_limits *lim);
struct queue_limits *lim) __releases(&q->limits_lock);
int queue_limits_set(struct request_queue *q, struct queue_limits *lim)
__must_not_hold(&q->limits_lock);
int blk_validate_limits(struct queue_limits *lim);
/**
@ -1112,6 +1114,7 @@ int blk_validate_limits(struct queue_limits *lim);
* starting update.
*/
static inline void queue_limits_cancel_update(struct request_queue *q)
__releases(&q->limits_lock)
{
mutex_unlock(&q->limits_lock);
}