Merge branch 'akpm' (patches from Andrew Morton)

Merge first patch-bomb from Andrew Morton:
 - Some pidns/fork/exec tweaks
 - OCFS2 updates
 - Most of MM - there remain quite a few memcg parts which depend on
   pending core cgroups changes.  Which might have been already merged -
   I'll check tomorrow...
 - Various misc stuff all over the place
 - A few block bits which I never got around to sending to Jens -
   relatively minor things.
 - MAINTAINERS maintenance
 - A small number of lib/ updates
 - checkpatch updates
 - epoll
 - firmware/dmi-scan
 - Some kprobes work for S390
 - drivers/rtc updates
 - hfsplus feature work
 - vmcore feature work
 - rbtree upgrades
 - AOE updates
 - pktcdvd cleanups
 - PPS
 - memstick
 - w1
 - New "inittmpfs" feature, which does the obvious
 - More IPC work from Davidlohr.

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (303 commits)
  lz4: fix compression/decompression signedness mismatch
  ipc: drop ipc_lock_check
  ipc, shm: drop shm_lock_check
  ipc: drop ipc_lock_by_ptr
  ipc, shm: guard against non-existant vma in shmdt(2)
  ipc: document general ipc locking scheme
  ipc,msg: drop msg_unlock
  ipc: rename ids->rw_mutex
  ipc,shm: shorten critical region for shmat
  ipc,shm: cleanup do_shmat pasta
  ipc,shm: shorten critical region for shmctl
  ipc,shm: make shmctl_nolock lockless
  ipc,shm: introduce shmctl_nolock
  ipc: drop ipcctl_pre_down
  ipc,shm: shorten critical region in shmctl_down
  ipc,shm: introduce lockless functions to obtain the ipc object
  initmpfs: use initramfs if rootfstype= or root= specified
  initmpfs: make rootfs use tmpfs when CONFIG_TMPFS enabled
  initmpfs: move rootfs code from fs/ramfs/ to init/
  initmpfs: move bdi setup from init_rootfs to init_ramfs
  ...

1 files changed, 32 insertions, 28 deletions

diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index d644dc611425..2cd2406b4140 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -543,8 +543,9 @@ static void o2net_set_nn_state(struct o2net_node *nn,
 	}
 
 	if (was_valid && !valid) {
-		printk(KERN_NOTICE "o2net: No longer connected to "
-		       SC_NODEF_FMT "\n", SC_NODEF_ARGS(old_sc));
+		if (old_sc)
+			printk(KERN_NOTICE "o2net: No longer connected to "
+				SC_NODEF_FMT "\n", SC_NODEF_ARGS(old_sc));
 		o2net_complete_nodes_nsw(nn);
 	}
 
@@ -765,32 +766,32 @@ static struct o2net_msg_handler *
 o2net_handler_tree_lookup(u32 msg_type, u32 key, struct rb_node ***ret_p,
 			  struct rb_node **ret_parent)
 {
-        struct rb_node **p = &o2net_handler_tree.rb_node;
-        struct rb_node *parent = NULL;
+	struct rb_node **p = &o2net_handler_tree.rb_node;
+	struct rb_node *parent = NULL;
 	struct o2net_msg_handler *nmh, *ret = NULL;
 	int cmp;
 
-        while (*p) {
-                parent = *p;
-                nmh = rb_entry(parent, struct o2net_msg_handler, nh_node);
+	while (*p) {
+		parent = *p;
+		nmh = rb_entry(parent, struct o2net_msg_handler, nh_node);
 		cmp = o2net_handler_cmp(nmh, msg_type, key);
 
-                if (cmp < 0)
-                        p = &(*p)->rb_left;
-                else if (cmp > 0)
-                        p = &(*p)->rb_right;
-                else {
+		if (cmp < 0)
+			p = &(*p)->rb_left;
+		else if (cmp > 0)
+			p = &(*p)->rb_right;
+		else {
 			ret = nmh;
-                        break;
+			break;
 		}
-        }
+	}
 
-        if (ret_p != NULL)
-                *ret_p = p;
-        if (ret_parent != NULL)
-                *ret_parent = parent;
+	if (ret_p != NULL)
+		*ret_p = p;
+	if (ret_parent != NULL)
+		*ret_parent = parent;
 
-        return ret;
+	return ret;
 }
 
 static void o2net_handler_kref_release(struct kref *kref)
@@ -1695,13 +1696,12 @@ static void o2net_start_connect(struct work_struct *work)
 		ret = 0;
 
 out:
-	if (ret) {
+	if (ret && sc) {
 		printk(KERN_NOTICE "o2net: Connect attempt to " SC_NODEF_FMT
 		       " failed with errno %d\n", SC_NODEF_ARGS(sc), ret);
 		/* 0 err so that another will be queued and attempted
 		 * from set_nn_state */
-		if (sc)
-			o2net_ensure_shutdown(nn, sc, 0);
+		o2net_ensure_shutdown(nn, sc, 0);
 	}
 	if (sc)
 		sc_put(sc);
@@ -1873,12 +1873,16 @@ static int o2net_accept_one(struct socket *sock)
 
 	if (o2nm_this_node() >= node->nd_num) {
 		local_node = o2nm_get_node_by_num(o2nm_this_node());
-		printk(KERN_NOTICE "o2net: Unexpected connect attempt seen "
-		       "at node '%s' (%u, %pI4:%d) from node '%s' (%u, "
-		       "%pI4:%d)\n", local_node->nd_name, local_node->nd_num,
-		       &(local_node->nd_ipv4_address),
-		       ntohs(local_node->nd_ipv4_port), node->nd_name,
-		       node->nd_num, &sin.sin_addr.s_addr, ntohs(sin.sin_port));
+		if (local_node)
+			printk(KERN_NOTICE "o2net: Unexpected connect attempt "
+					"seen at node '%s' (%u, %pI4:%d) from "
+					"node '%s' (%u, %pI4:%d)\n",
+					local_node->nd_name, local_node->nd_num,
+					&(local_node->nd_ipv4_address),
+					ntohs(local_node->nd_ipv4_port),
+					node->nd_name,
+					node->nd_num, &sin.sin_addr.s_addr,
+					ntohs(sin.sin_port));
 		ret = -EINVAL;
 		goto out;
 	}