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block: avoid repeated work in blk_mark_disk_dead

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Check if GD_DEAD is already set in blk_mark_disk_dead, and don't
duplicate the work already done.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: Christian Brauner <brauner@kernel.org>
Acked-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Link: https://lore.kernel.org/r/20230601094459.1350643-6-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2023-06-01 11:44:48 +02:00 committed by Jens Axboe
parent 66fddc25fe
commit a4f75764d1
1 changed files with 3 additions and 1 deletions
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4
block/genhd.c
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@ -575,7 +575,9 @@ void blk_mark_disk_dead(struct gendisk *disk)
/*
* Fail any new I/O.
*/
set_bit(GD_DEAD, &disk->state);
if (test_and_set_bit(GD_DEAD, &disk->state))
return;
if (test_bit(GD_OWNS_QUEUE, &disk->state))
blk_queue_flag_set(QUEUE_FLAG_DYING, disk->queue);