diff options
Diffstat (limited to 'include/net/sock.h')
| -rw-r--r-- | include/net/sock.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index 2aab9b63bf16..ebf75db08e06 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -1020,7 +1020,6 @@ struct proto { void (*unhash)(struct sock *sk); void (*rehash)(struct sock *sk); int (*get_port)(struct sock *sk, unsigned short snum); - void (*clear_sk)(struct sock *sk, int size); /* Keeping track of sockets in use */ #ifdef CONFIG_PROC_FS @@ -1242,8 +1241,6 @@ static inline int __sk_prot_rehash(struct sock *sk) return sk->sk_prot->hash(sk); } -void sk_prot_clear_portaddr_nulls(struct sock *sk, int size); - /* About 10 seconds */ #define SOCK_DESTROY_TIME (10*HZ) @@ -1342,6 +1339,16 @@ static inline void sk_mem_uncharge(struct sock *sk, int size) if (!sk_has_account(sk)) return; sk->sk_forward_alloc += size; + + /* Avoid a possible overflow. + * TCP send queues can make this happen, if sk_mem_reclaim() + * is not called and more than 2 GBytes are released at once. + * + * If we reach 2 MBytes, reclaim 1 MBytes right now, there is + * no need to hold that much forward allocation anyway. + */ + if (unlikely(sk->sk_forward_alloc >= 1 << 21)) + __sk_mem_reclaim(sk, 1 << 20); } static inline void sk_wmem_free_skb(struct sock *sk, struct sk_buff *skb) |