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loop: don't freeze the queue in lo_release

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By the time the final ->release is called there can't be outstanding I/O.
For non-final ->release there is no need for driver action at all.

Thus remove the useless queue freeze.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Tested-by: Darrick J. Wong <djwong@kernel.org>
Link: https://lore.kernel.org/r/20220330052917.2566582-10-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2022-03-30 07:29:11 +02:00 committed by Jens Axboe
parent 98ded54a33
commit 46dc967445
1 changed files with 0 additions and 7 deletions
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7
drivers/block/loop.c
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@ -1749,13 +1749,6 @@ static void lo_release(struct gendisk *disk, fmode_t mode)
*/
__loop_clr_fd(lo, true);
return;
} else if (lo->lo_state == Lo_bound) {
/*
* Otherwise keep thread (if running) and config,
* but flush possible ongoing bios in thread.
*/
blk_mq_freeze_queue(lo->lo_queue);
blk_mq_unfreeze_queue(lo->lo_queue);
}
out_unlock: