From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765012AbXHKTDy (ORCPT ); Sat, 11 Aug 2007 15:03:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758597AbXHKS63 (ORCPT ); Sat, 11 Aug 2007 14:58:29 -0400 Received: from 1wt.eu ([62.212.114.60]:1563 "EHLO 1wt.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762504AbXHKS6X (ORCPT ); Sat, 11 Aug 2007 14:58:23 -0400 From: Willy Tarreau Message-Id: <20070811184843.%N@1wt.eu> References: <20070811184752.%N@1wt.eu> User-Agent: quilt/0.46-1 Date: Sat, 11 Aug 2007 21:48:07 +0200 To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: Milan Broz , Alasdair G Kergon , Jens Axboe , Andrew Morton , Linus Torvalds , Chris Wright , Greg Kroah-Hartman Subject: [2.6.20.16 review 15/28] dm crypt: disable barriers Content-Disposition: inline; filename=0015-dm-crypt-disable-barriers.patch Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 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 Signed-off-by: Alasdair G Kergon Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Chris Wright Signed-off-by: Greg Kroah-Hartman --- 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 --