dm thin: remove needless request_queue NULL pointer check

Since commit ff9ea323816d ("block, bdi: an active gendisk always has a
request_queue associated with it") the request_queue pointer returned
from bdev_get_queue() shall never be NULL.

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index fff4c50df74db6b79fba68784fd4a02236031341..985baee3a678e8fa57a7d3a21212d67c7514d182 100644 (file)
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -2816,7 +2816,7 @@ static bool data_dev_supports_discard(struct pool_c *pt)
 {
        struct request_queue *q = bdev_get_queue(pt->data_dev->bdev);
 
-       return q && blk_queue_discard(q);
+       return blk_queue_discard(q);
 }
 
 static bool is_factor(sector_t block_size, uint32_t n)