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blk-sysfs: Rework documention of __blk_release_queue 

The Notes section of the comment was removed, because now
blk_release_queue can only be executed from blk_cleanup_queue (being
called when the q->kobj reaches zero), and also blk_init_queue was removed
in a1ce35fa49.

Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Marcos Paulo de Souza 2019-02-10 15:22:51 -02:00 committed by Jens Axboe
parent 7585d5082e
commit 1e93642837
1 changed files with 7 additions and 12 deletions
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19
block/blk-sysfs.c
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@ -817,21 +817,16 @@ static void blk_free_queue_rcu(struct rcu_head *rcu_head)
}
/**
* __blk_release_queue - release a request queue when it is no longer needed
* __blk_release_queue - release a request queue
* @work: pointer to the release_work member of the request queue to be released
*
* Description:
* blk_release_queue is the counterpart of blk_init_queue(). It should be
* called when a request queue is being released; typically when a block
* device is being de-registered. Its primary task it to free the queue
* itself.
*
* Notes:
* The low level driver must have finished any outstanding requests first
* via blk_cleanup_queue().
*
* Although blk_release_queue() may be called with preemption disabled,
* __blk_release_queue() may sleep.
* This function is called when a block device is being unregistered. The
* process of releasing a request queue starts with blk_cleanup_queue, which
* set the appropriate flags and then calls blk_put_queue, that decrements
* the reference counter of the request queue. Once the reference counter
* of the request queue reaches zero, blk_release_queue is called to release
* all allocated resources of the request queue.
*/
static void __blk_release_queue(struct work_struct *work)
{