dm linear: add WRITE SAME support
Mike Snitzer [Fri, 21 Dec 2012 20:23:37 +0000 (20:23 +0000)]
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 <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

drivers/md/dm-linear.c

index 1bf19a9..82222a8 100644 (file)
@@ -55,6 +55,7 @@ static int linear_ctr(struct dm_target *ti, unsigned int argc, char **argv)
 
        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 dm_target *ti,
 
 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,