[PATCH] block: remove redundant empty check of mq_list

[Xianting Tian]

blk_mq_flush_plug_list() itself will do the empty check of mq_list,
so remove such check in blk_flush_plug_list().
Actually normally mq_list is not empty when blk_flush_plug_list is
called.

Signed-off-by: Xianting Tian <tian.xianting@xxxxxxx>
---
 block/blk-core.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c
index 10c08ac50..dda301610 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1864,8 +1864,7 @@ void blk_flush_plug_list(struct blk_plug *plug, bool from_schedule)
 {
 	flush_plug_callbacks(plug, from_schedule);
 
-	if (!list_empty(&plug->mq_list))
-		blk_mq_flush_plug_list(plug, from_schedule);
+	blk_mq_flush_plug_list(plug, from_schedule);
 }
 
 /**
-- 
2.17.1