sock: add net to prot->enter_memory_pressure callback

The tcp_enter_memory_pressure calls NET_INC_STATS, but doesn't
have where to get the net from.

I decided to add a sk argument, not the net itself, only to factor
all the required sock_net(sk) calls inside the enter_memory_pressure 
callback itself.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/net/sock.h b/include/net/sock.h
index 3f4897ab432e..06c5259aff30 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -565,7 +565,7 @@ struct proto {
 #endif
 
         /* Memory pressure */
-        void                    (*enter_memory_pressure)(void);
+        void                    (*enter_memory_pressure)(struct sock *sk);
         atomic_t                *memory_allocated;      /* Current allocated memory. */
         atomic_t                *sockets_allocated;     /* Current number of sockets. */
         /*
@@ -1210,7 +1210,7 @@ static inline struct page *sk_stream_alloc_page(struct sock *sk)
 
         page = alloc_pages(sk->sk_allocation, 0);
         if (!page) {
-                sk->sk_prot->enter_memory_pressure();
+                sk->sk_prot->enter_memory_pressure(sk);
                 sk_stream_moderate_sndbuf(sk);
         }
         return page;