Messages in this thread Patch in this message | | | From | Willy Tarreau <> | Date | Sat, 11 Aug 2007 21:48:07 +0200 | Subject | [2.6.20.16 review 15/28] dm crypt: disable barriers |
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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> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> --- drivers/md/dm-crypt.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index 4c2471e..f68677d 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -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; -- 1.5.2.4 -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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