Cc: Jörg-Volker Peetz <jvpe...@web.de>
Cc: Max Filippov <jcmvb...@gmail.com>
Signed-off-by: Ming Lei <tom.leim...@gmail.com>
---
 block/blk-mq.c |    7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/block/blk-mq.c b/block/blk-mq.c
index c277797..3a560a4 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1130,12 +1130,7 @@ static void blk_mq_free_rq_map(struct blk_mq_tag_set 
*set,
 
 static size_t order_to_size(unsigned int order)
 {
-       size_t ret = PAGE_SIZE;
-
-       while (order--)
-               ret *= 2;
-
-       return ret;
+       return (size_t)PAGE_SIZE << order;
 }
 
 static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
-- 
1.7.9.5

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