block: add blk_queue_dead()

There are a number of QUEUE_FLAG_DEAD tests.  Add blk_queue_dead()
macro and use it.

This patch doesn't introduce any functional difference.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 1 insertions, 1 deletions

diff --git a/block/blk-exec.c b/block/blk-exec.c
index a1ebceb332f9..60532852b3ab 100644
--- a/block/blk-exec.c
+++ b/block/blk-exec.c
@@ -50,7 +50,7 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk,
 {
         int where = at_head ? ELEVATOR_INSERT_FRONT : ELEVATOR_INSERT_BACK;
 
-        if (unlikely(test_bit(QUEUE_FLAG_DEAD, &q->queue_flags))) {
+        if (unlikely(blk_queue_dead(q))) {
                 rq->errors = -ENXIO;
                 if (rq->end_io)
                         rq->end_io(rq, rq->errors);