Commit 9c89f8be authored May 09, 2007 by Milan Broz Committed by Linus Torvalds May 09, 2007

dm crypt: disable barriers



Disable barriers in dm-crypt because of current workqueue processing can
reorder requests.

This must be addresed later but for now disabling barriers is needed to
prevent data corruption.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 6ad36fe2

drivers/md/dm-crypt.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -954,6 +954,9 @@ static int crypt_map(struct dm_target ti, struct bio bio,
		struct crypt_config *cc = ti->private;
		struct crypt_io *io;

		if (bio_barrier(bio))
		return -EOPNOTSUPP;

		io = mempool_alloc(cc->io_pool, GFP_NOIO);
		io->target = ti;
		io->base_bio = bio;