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block: add helper for checking if queue is registered

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There are 4 users which check if queue is registered, so add one helper
to check it.

Cc: Christoph Hellwig <[email protected]>
Cc: Hannes Reinecke <[email protected]>
Cc: Greg KH <[email protected]>
Cc: Mike Snitzer <[email protected]>
Cc: Bart Van Assche <[email protected]>
Reviewed-by: Bart Van Assche <[email protected]>
Signed-off-by: Ming Lei <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Ming Lei 2019-08-27 19:01:47 +08:00 • committed by Jens Axboe
commit 58c898ba37
4 changed files with 5 additions and 4 deletions
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4
block/blk-sysfs.c
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@ -942,7 +942,7 @@ int blk_register_queue(struct gendisk *disk)
if (WARN_ON(!q))
return -ENXIO;
WARN_ONCE(test_bit(QUEUE_FLAG_REGISTERED, &q->queue_flags),
WARN_ONCE(blk_queue_registered(q),
"%s is registering an already registered queue\n",
kobject_name(&dev->kobj));
blk_queue_flag_set(QUEUE_FLAG_REGISTERED, q);
@ -1026,7 +1026,7 @@ void blk_unregister_queue(struct gendisk *disk)
return;
/* Return early if disk->queue was never registered. */
if (!test_bit(QUEUE_FLAG_REGISTERED, &q->queue_flags))
if (!blk_queue_registered(q))
return;
/*