block: change the tag sync vs async restriction logic

[safe/jmp/linux-2.6] / include / linux / blkdev.h

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 564445b..a967dd7 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -404,7 +404,7 @@ struct request_queue
        struct list_head        tag_busy_list;
 
        unsigned int            nr_sorted;
-       unsigned int            in_flight;
+       unsigned int            in_flight[2];
 
        unsigned int            rq_timeout;
        struct timer_list       timeout;
@@ -511,6 +511,11 @@ static inline void queue_flag_clear_unlocked(unsigned int flag,
        __clear_bit(flag, &q->queue_flags);
 }
 
+static inline int queue_in_flight(struct request_queue *q)
+{
+       return q->in_flight[0] + q->in_flight[1];
+}
+
 static inline void queue_flag_clear(unsigned int flag, struct request_queue *q)
 {
        WARN_ON_ONCE(!queue_is_locked(q));