[NET]: Uninline the sk_stream_alloc_pskb

This function seems too big for inlining. Indeed, it saves
half-a-kilo when uninlined:

add/remove: 1/0 grow/shrink: 0/7 up/down: 195/-719 (-524)
function                                     old     new   delta
sk_stream_alloc_pskb                           -     195    +195
ip_rt_init                                   529     525      -4
__inet_lookup_listener                       284     274     -10
tcp_sendmsg                                 2583    2486     -97
tcp_sendpage                                1449    1305    -144
tso_fragment                                 417     267    -150
tcp_fragment                                1149     992    -157
__tcp_push_pending_frames                   1998    1841    -157

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 27 deletions

diff --git a/include/net/sock.h b/include/net/sock.h
index e329d05f7995..7d500a825e4e 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1192,33 +1192,8 @@ static inline void sk_stream_moderate_sndbuf(struct sock *sk)
         }
 }
 
-static inline struct sk_buff *sk_stream_alloc_pskb(struct sock *sk,
-                                                   int size, int mem,
-                                                   gfp_t gfp)
-{
-        struct sk_buff *skb;
-
-        /* The TCP header must be at least 32-bit aligned.  */
-        size = ALIGN(size, 4);
-
-        skb = alloc_skb_fclone(size + sk->sk_prot->max_header, gfp);
-        if (skb) {
-                skb->truesize += mem;
-                if (sk_stream_wmem_schedule(sk, skb->truesize)) {
-                        /*
-                         * Make sure that we have exactly size bytes
-                         * available to the caller, no more, no less.
-                         */
-                        skb_reserve(skb, skb_tailroom(skb) - size);
-                        return skb;
-                }
-                __kfree_skb(skb);
-        } else {
-                sk->sk_prot->enter_memory_pressure();
-                sk_stream_moderate_sndbuf(sk);
-        }
-        return NULL;
-}
+struct sk_buff *sk_stream_alloc_pskb(struct sock *sk,
+                int size, int mem, gfp_t gfp);
 
 static inline struct sk_buff *sk_stream_alloc_skb(struct sock *sk,
                                                   int size,