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, 3 insertions, 3 deletions

diff --git a/block/blk-core.c b/block/blk-core.c
index 435af2378614..b5ed4f4a8d96 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -608,7 +608,7 @@ EXPORT_SYMBOL(blk_init_allocated_queue_node);
 
 int blk_get_queue(struct request_queue *q)
 {
-        if (likely(!test_bit(QUEUE_FLAG_DEAD, &q->queue_flags))) {
+        if (likely(!blk_queue_dead(q))) {
                 kobject_get(&q->kobj);
                 return 0;
         }
@@ -755,7 +755,7 @@ static struct request *get_request(struct request_queue *q, int rw_flags,
         const bool is_sync = rw_is_sync(rw_flags) != 0;
         int may_queue;
 
-        if (unlikely(test_bit(QUEUE_FLAG_DEAD, &q->queue_flags)))
+        if (unlikely(blk_queue_dead(q)))
                 return NULL;
 
         may_queue = elv_may_queue(q, rw_flags);
@@ -875,7 +875,7 @@ static struct request *get_request_wait(struct request_queue *q, int rw_flags,
                 struct io_context *ioc;
                 struct request_list *rl = &q->rq;
 
-                if (unlikely(test_bit(QUEUE_FLAG_DEAD, &q->queue_flags)))
+                if (unlikely(blk_queue_dead(q)))
                         return NULL;
 
                 prepare_to_wait_exclusive(&rl->wait[is_sync], &wait,