dm: remove legacy request-based IO path
dm supports both, and since we're killing off the legacy path in
general, get rid of it in dm.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
diff --git a/drivers/md/dm-sysfs.c b/drivers/md/dm-sysfs.c
index c209b8a..a05fcd5 100644
--- a/drivers/md/dm-sysfs.c
+++ b/drivers/md/dm-sysfs.c
@@ -92,7 +92,8 @@ static ssize_t dm_attr_suspended_show(struct mapped_device *md, char *buf)
static ssize_t dm_attr_use_blk_mq_show(struct mapped_device *md, char *buf)
{
- sprintf(buf, "%d\n", dm_use_blk_mq(md));
+ /* Purely for userspace compatibility */
+ sprintf(buf, "%d\n", true);
return strlen(buf);
}