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-rw-r--r--net/core/dst.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/net/core/dst.c b/net/core/dst.c
index 09c1530..57bc4d5 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);
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