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block: factor out a blk_debugfs_remove helper

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Split the debugfs removal from blk_unregister_queue into a helper so that
the it can be reused for blk_register_queue error handling.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20221114042637.1009333-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2022-11-14 05:26:34 +01:00 • committed by Jens Axboe
parent 450deb93df
commit 6fc75f309d
1 changed files with 14 additions and 7 deletions
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21
block/blk-sysfs.c
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@ -800,6 +800,19 @@ struct kobj_type blk_queue_ktype = {
.release = blk_release_queue,
};
static void blk_debugfs_remove(struct gendisk *disk)
{
struct request_queue *q = disk->queue;
mutex_lock(&q->debugfs_mutex);
blk_trace_shutdown(q);
debugfs_remove_recursive(q->debugfs_dir);
q->debugfs_dir = NULL;
q->sched_debugfs_dir = NULL;
q->rqos_debugfs_dir = NULL;
mutex_unlock(&q->debugfs_mutex);
}
/**
* blk_register_queue - register a block layer queue with sysfs
* @disk: Disk of which the request queue should be registered with sysfs.
@ -925,11 +938,5 @@ void blk_unregister_queue(struct gendisk *disk)
kobject_del(&q->kobj);
mutex_unlock(&q->sysfs_dir_lock);
mutex_lock(&q->debugfs_mutex);
blk_trace_shutdown(q);
debugfs_remove_recursive(q->debugfs_dir);
q->debugfs_dir = NULL;
q->sched_debugfs_dir = NULL;
q->rqos_debugfs_dir = NULL;
mutex_unlock(&q->debugfs_mutex);
blk_debugfs_remove(disk);
}