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dm: do not return early from dm_io_complete if BLK_STS_AGAIN without polling

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Commit 5291984004 ("dm: fix bio polling to handle possibile
BLK_STS_AGAIN") inadvertently introduced an early return from
dm_io_complete() without first queueing the bio to DM if BLK_STS_AGAIN
occurs and bio-polling is _not_ being used.

Fix this by only returning early from dm_io_complete() if the bio has
first been properly queued to DM. Otherwise, the bio will never finish
via bio_endio.

Fixes: 5291984004 ("dm: fix bio polling to handle possibile BLK_STS_AGAIN")
Cc: stable@vger.kernel.org
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
This commit is contained in:
Mike Snitzer 2022-06-21 13:37:06 -04:00
parent 9ae6e8b1c9
commit 78ccef9123
1 changed files with 3 additions and 1 deletions
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2
drivers/md/dm.c
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@ -939,8 +939,10 @@ static void dm_io_complete(struct dm_io *io)
if (io_error == BLK_STS_AGAIN) {
/* io_uring doesn't handle BLK_STS_AGAIN (yet) */
queue_io(md, bio);
return;
}
}
if (io_error == BLK_STS_DM_REQUEUE)
return;
}