From: Steffen Maier <maier@linux.vnet.ibm.com>
Date: Wed, 14 Mar 2018 14:33:06 +0000 (+0100)
Subject: dm mpath: fix passing integrity data
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d916e453942be7b5ab7b38037fa1abad1c25ada6;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

dm mpath: fix passing integrity data

commit 8c5c147339d2e201108169327b1f99aa6d57d2cd upstream.

After v4.12 commit e2460f2a4bc7 ("dm: mark targets that pass integrity
data"), dm-multipath, e.g. on DIF+DIX SCSI disk paths, does not support
block integrity any more. So add it to the whitelist.

This is also a pre-requisite to use block integrity with other dm layer(s)
on top of multipath, such as kpartx partitions (dm-linear) or LVM.

Also, bump target version to reflect this fix.

Fixes: e2460f2a4bc7 ("dm: mark targets that pass integrity data")
Cc: <stable@vger.kernel.org> #4.12+
Bisected-by: Fedor Loshakov <loshakov@linux.vnet.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index ddf0a4341ae2..2704a55f8b6e 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -1941,8 +1941,9 @@ static int multipath_busy(struct dm_target *ti)
  *---------------------------------------------------------------*/
 static struct target_type multipath_target = {
 	.name = "multipath",
-	.version = {1, 12, 0},
-	.features = DM_TARGET_SINGLETON | DM_TARGET_IMMUTABLE,
+	.version = {1, 13, 0},
+	.features = DM_TARGET_SINGLETON | DM_TARGET_IMMUTABLE |
+		    DM_TARGET_PASSES_INTEGRITY,
 	.module = THIS_MODULE,
 	.ctr = multipath_ctr,
 	.dtr = multipath_dtr,