Commit 9c89f8be authored by Milan Broz's avatar Milan Broz Committed by Linus Torvalds

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: default avatarMilan Broz <mbroz@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 6ad36fe2
...@@ -954,6 +954,9 @@ static int crypt_map(struct dm_target *ti, struct bio *bio, ...@@ -954,6 +954,9 @@ static int crypt_map(struct dm_target *ti, struct bio *bio,
struct crypt_config *cc = ti->private; struct crypt_config *cc = ti->private;
struct crypt_io *io; struct crypt_io *io;
if (bio_barrier(bio))
return -EOPNOTSUPP;
io = mempool_alloc(cc->io_pool, GFP_NOIO); io = mempool_alloc(cc->io_pool, GFP_NOIO);
io->target = ti; io->target = ti;
io->base_bio = bio; io->base_bio = bio;
......
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