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block: add blk_queue_dead()

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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 <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Tejun Heo 2011-12-14 00:33:37 +01:00 • committed by Jens Axboe
commit 34f6055c80
6 changed files with 10 additions and 9 deletions
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2
block/blk.h
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@ -85,7 +85,7 @@ static inline struct request *__elv_next_request(struct request_queue *q)
q->flush_queue_delayed = 1;
return NULL;
}
if (test_bit(QUEUE_FLAG_DEAD, &q->queue_flags) ||
if (unlikely(blk_queue_dead(q)) ||
!q->elevator->ops->elevator_dispatch_fn(q, 0))
return NULL;
}