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    Subject[PATCH 4.14 025/109] dm mpath: fix passing integrity data
    Date
    4.14-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Steffen Maier <maier@linux.vnet.ibm.com>

    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>

    ---
    drivers/md/dm-mpath.c | 5 +++--
    1 file changed, 3 insertions(+), 2 deletions(-)

    --- a/drivers/md/dm-mpath.c
    +++ b/drivers/md/dm-mpath.c
    @@ -1941,8 +1941,9 @@ static int multipath_busy(struct dm_targ
    *---------------------------------------------------------------*/
    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,

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