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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 <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Tejun Heo
2011-12-14 00:33:37 +01:00
committed by Jens Axboe
parent 1ba64edef6
commit 34f6055c80
6 changed files with 10 additions and 9 deletions
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block/blk-throttle.c
+2 -2
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@@ -310,7 +310,7 @@ static struct throtl_grp * throtl_get_tg(struct throtl_data *td)
struct request_queue *q = td->queue;
/* no throttling for dead queue */
if (unlikely(test_bit(QUEUE_FLAG_DEAD, &q->queue_flags)))
if (unlikely(blk_queue_dead(q)))
return NULL;
rcu_read_lock();
@@ -335,7 +335,7 @@ static struct throtl_grp * throtl_get_tg(struct throtl_data *td)
spin_lock_irq(q->queue_lock);
/* Make sure @q is still alive */
if (unlikely(test_bit(QUEUE_FLAG_DEAD, &q->queue_flags))) {
if (unlikely(blk_queue_dead(q))) {
kfree(tg);
return NULL;
}