diff options
| author | Ming Lei <ming.lei@redhat.com> | 2022-03-08 08:51:57 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-03-09 05:40:01 +0300 |
| commit | ba3e845665fbbb0252336f27200cd5cf288a3573 (patch) | |
| tree | 04004f708d092b8c41ba675b733c3dd6f1b47dc9 /block | |
| parent | de3d347f7b8a1a997fbc9267454ed6065068b969 (diff) | |
| download | linux-ba3e845665fbbb0252336f27200cd5cf288a3573.tar.xz | |
block: move q_usage_counter release into blk_queue_release
After blk_cleanup_queue() returns, disk may not be released yet, so
probably bio may still be submitted and ->q_usage_counter may be
touched, so far this way seems safe, but not good from API's viewpoint.
Move the release q_usage_counter into blk_queue_release().
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220308055200.735835-12-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-core.c | 2 | ||||
| -rw-r--r-- | block/blk-sysfs.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 3fa2f08d3750..a97918d107a0 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -342,8 +342,6 @@ void blk_cleanup_queue(struct request_queue *q) blk_mq_sched_free_rqs(q); mutex_unlock(&q->sysfs_lock); - percpu_ref_exit(&q->q_usage_counter); - /* @q is and will stay empty, shutdown and put */ blk_put_queue(q); } diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 220085109d7f..af5a6d86073f 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -780,6 +780,8 @@ static void blk_release_queue(struct kobject *kobj) might_sleep(); + percpu_ref_exit(&q->q_usage_counter); + if (q->poll_stat) blk_stat_remove_callback(q, q->poll_cb); blk_stat_free_callback(q->poll_cb); |