diff --git a/net/core/dst.c b/net/core/dst.c index 09c1530..07e5ad2 100644 --- 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);