Merge ../linux-2.6-watchdog-mm

[pandora-kernel.git] / net / sunrpc / svcsock.c

diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index db0d104..ff1f8bf 100644 (file)
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -32,6 +32,7 @@
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>
 #include <linux/file.h>
+#include <linux/freezer.h>
 #include <net/sock.h>
 #include <net/checksum.h>
 #include <net/ip.h>
@@ -84,6 +85,35 @@ static struct cache_deferred_req *svc_defer(struct cache_req *req);
  */
 static int svc_conn_age_period = 6*60;
 
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+static struct lock_class_key svc_key[2];
+static struct lock_class_key svc_slock_key[2];
+
+static inline void svc_reclassify_socket(struct socket *sock)
+{
+       struct sock *sk = sock->sk;
+       BUG_ON(sk->sk_lock.owner != NULL);
+       switch (sk->sk_family) {
+       case AF_INET:
+               sock_lock_init_class_and_name(sk, "slock-AF_INET-NFSD",
+                   &svc_slock_key[0], "sk_lock-AF_INET-NFSD", &svc_key[0]);
+               break;
+
+       case AF_INET6:
+               sock_lock_init_class_and_name(sk, "slock-AF_INET6-NFSD",
+                   &svc_slock_key[1], "sk_lock-AF_INET6-NFSD", &svc_key[1]);
+               break;
+
+       default:
+               BUG();
+       }
+}
+#else
+static inline void svc_reclassify_socket(struct socket *sock)
+{
+}
+#endif
+
 /*
  * Queue up an idle server thread.  Must have pool->sp_lock held.
  * Note: this is really a stack rather than a queue, so that we only
@@ -299,8 +329,9 @@ void svc_reserve(struct svc_rqst *rqstp, int space)
 static inline void
 svc_sock_put(struct svc_sock *svsk)
 {
-       if (atomic_dec_and_test(&svsk->sk_inuse) && test_bit(SK_DEAD, &svsk->sk_flags)) {
-               printk("svc: releasing dead socket\n");
+       if (atomic_dec_and_test(&svsk->sk_inuse) &&
+                       test_bit(SK_DEAD, &svsk->sk_flags)) {
+               dprintk("svc: releasing dead socket\n");
                if (svsk->sk_sock->file)
                        sockfd_put(svsk->sk_sock);
                else
@@ -1031,15 +1062,19 @@ svc_tcp_recvfrom(struct svc_rqst *rqstp)
                         *  bit set in the fragment length header.
                         *  But apparently no known nfs clients send fragmented
                         *  records. */
-                       printk(KERN_NOTICE "RPC: bad TCP reclen 0x%08lx (non-terminal)\n",
-                              (unsigned long) svsk->sk_reclen);
+                       if (net_ratelimit())
+                               printk(KERN_NOTICE "RPC: bad TCP reclen 0x%08lx"
+                                      " (non-terminal)\n",
+                                      (unsigned long) svsk->sk_reclen);
                        goto err_delete;
                }
                svsk->sk_reclen &= 0x7fffffff;
                dprintk("svc: TCP record, %d bytes\n", svsk->sk_reclen);
                if (svsk->sk_reclen > serv->sv_max_mesg) {
-                       printk(KERN_NOTICE "RPC: bad TCP reclen 0x%08lx (large)\n",
-                              (unsigned long) svsk->sk_reclen);
+                       if (net_ratelimit())
+                               printk(KERN_NOTICE "RPC: bad TCP reclen 0x%08lx"
+                                      " (large)\n",
+                                      (unsigned long) svsk->sk_reclen);
                        goto err_delete;
                }
        }
@@ -1247,6 +1282,8 @@ svc_recv(struct svc_rqst *rqstp, long timeout)
                                schedule_timeout_uninterruptible(msecs_to_jiffies(500));
                        rqstp->rq_pages[i] = p;
                }
+       rqstp->rq_pages[i++] = NULL; /* this might be seen in nfs_read_actor */
+       BUG_ON(pages >= RPCSVC_MAXPAGES);
 
        /* Make arg->head point to first page and arg->pages point to rest */
        arg = &rqstp->rq_arg;
@@ -1555,6 +1592,8 @@ svc_create_socket(struct svc_serv *serv, int protocol, struct sockaddr_in *sin)
        if ((error = sock_create_kern(PF_INET, type, protocol, &sock)) < 0)
                return error;
 
+       svc_reclassify_socket(sock);
+
        if (type == SOCK_STREAM)
                sock->sk->sk_reuse = 1; /* allow address reuse */
        error = kernel_bind(sock, (struct sockaddr *) sin,