The patch titled
dm crypt: disable barriers
has been added to the -mm tree. Its filename is
dm-crypt-disable-barriers.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: dm crypt: disable barriers
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>
Cc: Jens Axboe <jens.axboe@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/md/dm-crypt.c | 3 +++
1 files changed, 3 insertions(+)
diff -puN drivers/md/dm-crypt.c~dm-crypt-disable-barriers drivers/md/dm-crypt.c
--- a/drivers/md/dm-crypt.c~dm-crypt-disable-barriers
+++ a/drivers/md/dm-crypt.c
@@ -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;
_
Patches currently in -mm which might be from mbroz@xxxxxxxxxx are
dm-crypt-disable-barriers.patch
dm-io-delay-dec_count.patch
dm-io-prepare-for-new-interface.patch
dm-io-new-interface.patch
dm-kcopyd-update-dm-io-interface.patch
dm-exception-store-update-dm-io-interface.patch
dm-log-update-dm-io-interface.patch
dm-raid1-update-dm-io-interface.patch
dm-io-remove-old-interface.patch
dm-bio-list-helpers.patch
dm-delay-target.patch
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