blkcg: remove unnecessary request_list->blkg NULL test in blk_put_rl()

Since ec13b1d6f0a0 ("blkcg: always create the blkcg_gq for the root
blkcg"), a request_list always has its blkg associated.  Drop
unnecessary rl->blkg NULL test from blk_put_rl().

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
index 1b62d768c7df5ea3053d09ed3878d1d7a16837b2..9711fc277c02d2e9a9baaa81833eec5db3d53a5e 100644 (file)
--- a/include/linux/blk-cgroup.h
+++ b/include/linux/blk-cgroup.h
@@ -394,8 +394,7 @@ root_rl:
  */
 static inline void blk_put_rl(struct request_list *rl)
 {
-       /* root_rl may not have blkg set */
-       if (rl->blkg && rl->blkg->blkcg != &blkcg_root)
+       if (rl->blkg->blkcg != &blkcg_root)
                blkg_put(rl->blkg);
 }