dm mpath: enable WRITE SAME support
Enable WRITE SAME support in dm multipath. As far as multipath is
concerned it is just another write request.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Tested-by: Bharata B Rao <bharata.rao@gmail.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 51bb816..bdf26f5 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -907,6 +907,7 @@
ti->num_flush_bios = 1;
ti->num_discard_bios = 1;
+ ti->num_write_same_bios = 1;
return 0;