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block: fix surprise removal for drivers calling blk_set_queue_dying

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Various block drivers call blk_set_queue_dying to mark a disk as dead due
to surprise removal events, but since commit 8e141f9eb8 that doesn't
work given that the GD_DEAD flag needs to be set to stop I/O.

Replace the driver calls to blk_set_queue_dying with a new (and properly
documented) blk_mark_disk_dead API, and fold blk_set_queue_dying into the
only remaining caller.

Fixes: 8e141f9eb8 ("block: drain file system I/O on del_gendisk")
Reported-by: Markus Blöchl <markus.bloechl@ipetronik.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Link: https://lore.kernel.org/r/20220217075231.1140-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2022-02-17 08:52:31 +01:00
committed by Jens Axboe
parent cc8f7fe1f5
commit 7a5428dcb7
9 changed files with 24 additions and 15 deletions
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2
drivers/block/rbd.c
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@@ -7185,7 +7185,7 @@ static ssize_t do_rbd_remove(struct bus_type *bus,
* IO to complete/fail.
*/
blk_mq_freeze_queue(rbd_dev->disk->queue);
blk_set_queue_dying(rbd_dev->disk->queue);
blk_mark_disk_dead(rbd_dev->disk);
}
del_gendisk(rbd_dev->disk);