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, 2 insertions, 2 deletions

diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index e7f9f657f105..f0b2ca8f66d0 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -425,7 +425,7 @@ queue_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
         if (!entry->show)
                 return -EIO;
         mutex_lock(&q->sysfs_lock);
-        if (test_bit(QUEUE_FLAG_DEAD, &q->queue_flags)) {
+        if (blk_queue_dead(q)) {
                 mutex_unlock(&q->sysfs_lock);
                 return -ENOENT;
         }
@@ -447,7 +447,7 @@ queue_attr_store(struct kobject *kobj, struct attribute *attr,
 
         q = container_of(kobj, struct request_queue, kobj);
         mutex_lock(&q->sysfs_lock);
-        if (test_bit(QUEUE_FLAG_DEAD, &q->queue_flags)) {
+        if (blk_queue_dead(q)) {
                 mutex_unlock(&q->sysfs_lock);
                 return -ENOENT;
         }