[PATCH] Create asm-generic/fcntl.h

[linux-2.6] / net / ipv4 / tcp.c

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 02848e72e9c1c82d1ac69951bb44d5211b0e5f15..f3f0013a95804808d1522e89192b0beaefa91a30 100644 (file)
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -269,7 +269,7 @@
 
 int sysctl_tcp_fin_timeout = TCP_FIN_TIMEOUT;
 
-DEFINE_SNMP_STAT(struct tcp_mib, tcp_statistics);
+DEFINE_SNMP_STAT(struct tcp_mib, tcp_statistics) __read_mostly;
 
 atomic_t tcp_orphan_count = ATOMIC_INIT(0);
 
@@ -309,15 +309,6 @@ void tcp_enter_memory_pressure(void)
 
 EXPORT_SYMBOL(tcp_enter_memory_pressure);
 
-/*
- * LISTEN is a special case for poll..
- */
-static __inline__ unsigned int tcp_listen_poll(struct sock *sk,
-                                              poll_table *wait)
-{
-       return !reqsk_queue_empty(&inet_csk(sk)->icsk_accept_queue) ? (POLLIN | POLLRDNORM) : 0;
-}
-
 /*
  *     Wait for a TCP event.
  *
@@ -333,7 +324,7 @@ unsigned int tcp_poll(struct file *file, struct socket *sock, poll_table *wait)
 
        poll_wait(file, sk->sk_sleep, wait);
        if (sk->sk_state == TCP_LISTEN)
-               return tcp_listen_poll(sk, wait);
+               return inet_csk_listen_poll(sk);
 
        /* Socket is not locked. We are protected from async events
           by poll logic and correct handling of state changes
@@ -561,8 +552,7 @@ new_segment:
                        tcp_mark_push(tp, skb);
                        goto new_segment;
                }
-               if (sk->sk_forward_alloc < copy &&
-                   !sk_stream_mem_schedule(sk, copy, 0))
+               if (!sk_stream_wmem_schedule(sk, copy))
                        goto wait_for_memory;
                
                if (can_coalesce) {
@@ -779,19 +769,23 @@ new_segment:
                                        if (off == PAGE_SIZE) {
                                                put_page(page);
                                                TCP_PAGE(sk) = page = NULL;
+                                               off = 0;
                                        }
-                               }
+                               } else
+                                       off = 0;
+
+                               if (copy > PAGE_SIZE - off)
+                                       copy = PAGE_SIZE - off;
+
+                               if (!sk_stream_wmem_schedule(sk, copy))
+                                       goto wait_for_memory;
 
                                if (!page) {
                                        /* Allocate new cache page. */
                                        if (!(page = sk_stream_alloc_page(sk)))
                                                goto wait_for_memory;
-                                       off = 0;
                                }
 
-                               if (copy > PAGE_SIZE - off)
-                                       copy = PAGE_SIZE - off;
-
                                /* Time to copy data. We are close to
                                 * the end! */
                                err = skb_copy_to_page(sk, from, skb, page,