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block/cgroup: Improve lock context annotations

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Add lock context annotations where these are missing. Move the
blkg_conf_prep() annotation into block/blk-cgroup.h to make it visible
to all blkg_conf_prep() callers.

Reviewed-by: Hannes Reinecke <hare@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://patch.msgid.link/58ddd6e2b960bdfa03d0007984386bc0ba351391.1780682325.git.bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bart Van Assche
2026-06-05 11:00:58 -07:00
committed by Jens Axboe
parent c574c3cc36
commit 9865e41664
2 changed files with 10 additions and 6 deletions
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1
block/blk-cgroup.c
View File

@@ -862,7 +862,6 @@ unsigned long __must_check blkg_conf_open_bdev_frozen(struct blkg_conf_ctx *ctx)
*/
int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
struct blkg_conf_ctx *ctx)
__acquires(&bdev->bd_queue->queue_lock)
{
struct gendisk *disk;
struct request_queue *q;

15
block/blk-cgroup.h
View File

@@ -218,14 +218,19 @@ struct blkg_conf_ctx {
};
void blkg_conf_init(struct blkg_conf_ctx *ctx, char *input);
int blkg_conf_open_bdev(struct blkg_conf_ctx *ctx);
int blkg_conf_open_bdev(struct blkg_conf_ctx *ctx)
__cond_acquires(0, &ctx->bdev->bd_queue->rq_qos_mutex);
unsigned long blkg_conf_open_bdev_frozen(struct blkg_conf_ctx *ctx);
int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
struct blkg_conf_ctx *ctx);
void blkg_conf_unprep(struct blkg_conf_ctx *ctx);
void blkg_conf_close_bdev(struct blkg_conf_ctx *ctx);
struct blkg_conf_ctx *ctx)
__cond_acquires(0, &ctx->bdev->bd_disk->queue->queue_lock);
void blkg_conf_unprep(struct blkg_conf_ctx *ctx)
__releases(ctx->bdev->bd_disk->queue->queue_lock);
void blkg_conf_close_bdev(struct blkg_conf_ctx *ctx)
__releases(&ctx->bdev->bd_queue->rq_qos_mutex);
void blkg_conf_close_bdev_frozen(struct blkg_conf_ctx *ctx,
unsigned long memflags);
unsigned long memflags)
__releases(&ctx->bdev->bd_queue->rq_qos_mutex);
/**
* bio_issue_as_root_blkg - see if this bio needs to be issued as root blkg