Messages in this thread Patch in this message | | | Date | Mon, 30 Jul 2007 21:32:09 -0700 | From | Greg KH <> | Subject | [patch 09/26] dm crypt: disable barriers |
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-stable review patch. If anyone has any objections, please let us know.
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From: Milan Broz <mbroz@redhat.com>
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> --- Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9c89f8be1a7d14aad9d2c3f7d90d7d88f82c61e2
drivers/md/dm-crypt.c | 3 +++ 1 file changed, 3 insertions(+)
--- linux-2.6.21.6.orig/drivers/md/dm-crypt.c +++ linux-2.6.21.6/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; -- - 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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