[PATCH] net: use unlikely for dql_avail case

[xiaolinkui]

This is an unlikely case, use unlikely() on it seems logical.

Signed-off-by: xiaolinkui <xiaolin...@kylinos.cn>
---
 include/linux/netdevice.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 88292953aa6f..005f3da1b13d 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3270,7 +3270,7 @@ static inline void netdev_tx_completed_queue(struct 
netdev_queue *dev_queue,
         */
        smp_mb();
 
-       if (dql_avail(&dev_queue->dql) < 0)
+       if (unlikely(dql_avail(&dev_queue->dql) < 0))
                return;
 
        if (test_and_clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state))
-- 
2.17.1