SUNRPC: added debug messages to RPC pipefs

This patch adds debug messages for notification events.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index f075f881777..9a881138fea 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -33,6 +33,10 @@
 #include "netns.h"
 #include "sunrpc.h"
 
+#define RPCDBG_FACILITY RPCDBG_DEBUG
+
+#define NET_NAME(net)   ((net == &init_net) ? " (init_net)" : "")
+
 static struct vfsmount *rpc_mnt __read_mostly;
 static int rpc_mount_count;
 
@@ -1082,6 +1086,8 @@ rpc_fill_super(struct super_block *sb, void *data, int silent)
         }
         if (rpc_populate(root, files, RPCAUTH_lockd, RPCAUTH_RootEOF, NULL))
                 return -ENOMEM;
+        dprintk("RPC:   sending pipefs MOUNT notification for net %p%s\n", net,
+                                                                NET_NAME(net));
         err = blocking_notifier_call_chain(&rpc_pipefs_notifier_list,
                                            RPC_PIPEFS_MOUNT,
                                            sb);
@@ -1115,6 +1121,8 @@ void rpc_kill_sb(struct super_block *sb)
         sn->pipefs_sb = NULL;
         mutex_unlock(&sn->pipefs_sb_lock);
         put_net(net);
+        dprintk("RPC:   sending pipefs UMOUNT notification for net %p%s\n", net,
+                                                                NET_NAME(net));
         blocking_notifier_call_chain(&rpc_pipefs_notifier_list,
                                            RPC_PIPEFS_UMOUNT,
                                            sb);