X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=net%2Fcore%2Fstream.c;h=a6b3437ff082d9cf98b59bb754b409817f3b4597;hb=358c323c17ac527b82c6333db6a485112c21ab0d;hp=bf188ffdbdbe9137cfe78c7041e8e482f43df37b;hpb=21371f768bf7127ee45bfaadd17899df6a439e8f;p=linux-2.6 diff --git a/net/core/stream.c b/net/core/stream.c index bf188ffdbd..a6b3437ff0 100644 --- a/net/core/stream.c +++ b/net/core/stream.c @@ -172,17 +172,6 @@ do_interrupted: EXPORT_SYMBOL(sk_stream_wait_memory); -void sk_stream_rfree(struct sk_buff *skb) -{ - struct sock *sk = skb->sk; - - skb_truesize_check(skb); - atomic_sub(skb->truesize, &sk->sk_rmem_alloc); - sk->sk_forward_alloc += skb->truesize; -} - -EXPORT_SYMBOL(sk_stream_rfree); - int sk_stream_error(struct sock *sk, int flags, int err) { if (err == -EPIPE) @@ -194,77 +183,6 @@ int sk_stream_error(struct sock *sk, int flags, int err) EXPORT_SYMBOL(sk_stream_error); -void __sk_stream_mem_reclaim(struct sock *sk) -{ - atomic_sub(sk->sk_forward_alloc >> SK_STREAM_MEM_QUANTUM_SHIFT, - sk->sk_prot->memory_allocated); - sk->sk_forward_alloc &= SK_STREAM_MEM_QUANTUM - 1; - if (*sk->sk_prot->memory_pressure && - (atomic_read(sk->sk_prot->memory_allocated) < - sk->sk_prot->sysctl_mem[0])) - *sk->sk_prot->memory_pressure = 0; -} - -EXPORT_SYMBOL(__sk_stream_mem_reclaim); - -int sk_stream_mem_schedule(struct sock *sk, int size, int kind) -{ - int amt = sk_stream_pages(size); - struct proto *prot = sk->sk_prot; - - sk->sk_forward_alloc += amt * SK_STREAM_MEM_QUANTUM; - atomic_add(amt, prot->memory_allocated); - - /* Under limit. */ - if (atomic_read(prot->memory_allocated) < prot->sysctl_mem[0]) { - if (*prot->memory_pressure) - *prot->memory_pressure = 0; - return 1; - } - - /* Over hard limit. */ - if (atomic_read(prot->memory_allocated) > prot->sysctl_mem[2]) { - prot->enter_memory_pressure(); - goto suppress_allocation; - } - - /* Under pressure. */ - if (atomic_read(prot->memory_allocated) > prot->sysctl_mem[1]) - prot->enter_memory_pressure(); - - if (kind) { - if (atomic_read(&sk->sk_rmem_alloc) < prot->sysctl_rmem[0]) - return 1; - } else if (sk->sk_wmem_queued < prot->sysctl_wmem[0]) - return 1; - - if (!*prot->memory_pressure || - prot->sysctl_mem[2] > atomic_read(prot->sockets_allocated) * - sk_stream_pages(sk->sk_wmem_queued + - atomic_read(&sk->sk_rmem_alloc) + - sk->sk_forward_alloc)) - return 1; - -suppress_allocation: - - if (!kind) { - sk_stream_moderate_sndbuf(sk); - - /* Fail only if socket is _under_ its sndbuf. - * In this case we cannot block, so that we have to fail. - */ - if (sk->sk_wmem_queued + size >= sk->sk_sndbuf) - return 1; - } - - /* Alas. Undo changes. */ - sk->sk_forward_alloc -= amt * SK_STREAM_MEM_QUANTUM; - atomic_sub(amt, prot->memory_allocated); - return 0; -} - -EXPORT_SYMBOL(sk_stream_mem_schedule); - void sk_stream_kill_queues(struct sock *sk) { /* First the read buffer. */ @@ -274,13 +192,13 @@ void sk_stream_kill_queues(struct sock *sk) __skb_queue_purge(&sk->sk_error_queue); /* Next, the write queue. */ - BUG_TRAP(skb_queue_empty(&sk->sk_write_queue)); + WARN_ON(!skb_queue_empty(&sk->sk_write_queue)); /* Account for returned memory. */ - sk_stream_mem_reclaim(sk); + sk_mem_reclaim(sk); - BUG_TRAP(!sk->sk_wmem_queued); - BUG_TRAP(!sk->sk_forward_alloc); + WARN_ON(sk->sk_wmem_queued); + WARN_ON(sk->sk_forward_alloc); /* It is _impossible_ for the backlog to contain anything * when we get here. All user references to this socket