diff options
| -rw-r--r-- | net/core/dst.c | 6 |
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); |
