ethtool: Add reset operation

[safe/jmp/linux-2.6] / net / core / dst.c

diff --git a/net/core/dst.c b/net/core/dst.c
index 09c1530..57bc4d5 100644 (file)
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -263,9 +263,11 @@ again:
 void dst_release(struct dst_entry *dst)
 {
        if (dst) {
-               WARN_ON(atomic_read(&dst->__refcnt) < 1);
+               int newrefcnt;
+
                smp_mb__before_atomic_dec();
-               atomic_dec(&dst->__refcnt);
+               newrefcnt = atomic_dec_return(&dst->__refcnt);
+               WARN_ON(newrefcnt < 0);
        }
 }
 EXPORT_SYMBOL(dst_release);