From: Xu Wang <vulab@iscas.ac.cn>
Date: Fri, 19 Mar 2021 08:16:28 +0000 (+0000)
Subject: dm cache: remove needless request_queue NULL pointer checks
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=63508e38c1081c96abb315df1fd1acb77befa42f;p=linux.git

dm cache: remove needless request_queue NULL pointer checks

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-cache-target.c b/drivers/md/dm-cache-target.c
index 541c45027cc85..6ab01ff257470 100644
--- a/drivers/md/dm-cache-target.c
+++ b/drivers/md/dm-cache-target.c
@@ -3387,7 +3387,7 @@ static bool origin_dev_supports_discard(struct block_device *origin_bdev)
 {
 	struct request_queue *q = bdev_get_queue(origin_bdev);
 
-	return q && blk_queue_discard(q);
+	return blk_queue_discard(q);
 }
 
 /*