From: Milan Broz <mbroz@xxxxxxxxxx> 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@xxxxxxxxxx> Signed-off-by: Alasdair G Kergon <agk@xxxxxxxxxx> --- drivers/md/dm-crypt.c | 3 +++ 1 files changed, 3 insertions(+) Index: linux-2.6.21/drivers/md/dm-crypt.c =================================================================== --- linux-2.6.21.orig/drivers/md/dm-crypt.c 2007-05-01 17:38:32.000000000 +0100 +++ linux-2.6.21/drivers/md/dm-crypt.c 2007-05-01 17:40:47.000000000 +0100 @@ -954,6 +954,9 @@ static int crypt_map(struct dm_target *t 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; -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
