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);