提交 7663c1e2 编写于 作者: J Jens Axboe 提交者: Linus Torvalds

Improve queue_is_locked()

spin_is_locked() doesn't work on UP without spinlock debugging. Make it
safer and just return 1 on UP, so we don't get false positives. The plan
is to kill this debug function during the -rc cycle.
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 62035542
......@@ -412,8 +412,12 @@ struct request_queue
static inline int queue_is_locked(struct request_queue *q)
{
#ifdef CONFIG_SMP
spinlock_t *lock = q->queue_lock;
return lock && spin_is_locked(lock);
#else
return 1;
#endif
}
static inline void queue_flag_set_unlocked(unsigned int flag,
......
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