1 files changed, 5 insertions, 6 deletions

diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index 0f5e22a7971f..e47c4c75fd33 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -158,7 +158,7 @@ restart:
                         return -1;
                 }
                 last_tag = tag + 1;
-        } while (test_and_set_bit_lock(tag, &bm->word));
+        } while (test_and_set_bit(tag, &bm->word));
 
         return tag;
 }
@@ -357,11 +357,10 @@ static void bt_clear_tag(struct blk_mq_bitmap_tags *bt, unsigned int tag)
         struct bt_wait_state *bs;
         int wait_cnt;
 
-        /*
-         * The unlock memory barrier need to order access to req in free
-         * path and clearing tag bit
-         */
-        clear_bit_unlock(TAG_TO_BIT(bt, tag), &bt->map[index].word);
+        clear_bit(TAG_TO_BIT(bt, tag), &bt->map[index].word);
+
+        /* Ensure that the wait list checks occur after clear_bit(). */
+        smp_mb();
 
         bs = bt_wake_ptr(bt);
         if (!bs)