dm raid1: set discard_zeroes_data_unsupported

[cascardo/linux.git] / drivers / md / dm-raid1.c

diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index ea16984..b58b7a3 100644 (file)
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -1084,6 +1084,7 @@ static int mirror_ctr(struct dm_target *ti, unsigned int argc, char **argv)
        ti->split_io = dm_rh_get_region_size(ms->rh);
        ti->num_flush_requests = 1;
        ti->num_discard_requests = 1;
+       ti->discard_zeroes_data_unsupported = 1;
 
        ms->kmirrord_wq = alloc_workqueue("kmirrord",
                                          WQ_NON_REENTRANT | WQ_MEM_RECLAIM, 0);