From: Mike Snitzer The linear target can already support WRITE SAME requests so signal this by setting num_write_same_requests to 1. Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- drivers/md/dm-linear.c | 1 + drivers/md/dm-linear.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) Index: linux/drivers/md/dm-linear.c =================================================================== --- linux.orig/drivers/md/dm-linear.c +++ linux/drivers/md/dm-linear.c @@ -55,6 +55,7 @@ static int linear_ctr(struct dm_target * ti->num_flush_requests = 1; ti->num_discard_requests = 1; + ti->num_write_same_requests = 1; ti->private = lc; return 0; @@ -155,7 +156,7 @@ static int linear_iterate_devices(struct static struct target_type linear_target = { .name = "linear", - .version = {1, 1, 0}, + .version = {1, 2, 0}, .module = THIS_MODULE, .ctr = linear_ctr, .dtr = linear_dtr,