fsnotify: add pr_debug throughout

It can be hard to debug fsnotify since there are so few printks.  Use
pr_debug to allow for dynamic debugging.

Signed-off-by: Eric Paris <eparis@redhat.com>
diff --git a/fs/notify/inotify/inotify_fsnotify.c b/fs/notify/inotify/inotify_fsnotify.c
index 9d332e7..906b727 100644
--- a/fs/notify/inotify/inotify_fsnotify.c
+++ b/fs/notify/inotify/inotify_fsnotify.c
@@ -98,6 +98,9 @@
 	struct fsnotify_event_private_data *fsn_event_priv;
 	int wd, ret;
 
+	pr_debug("%s: group=%p event=%p to_tell=%p mask=%x\n", __func__, group,
+		 event, event->to_tell, event->mask);
+
 	to_tell = event->to_tell;
 
 	fsn_mark = fsnotify_find_inode_mark(group, to_tell);
@@ -151,6 +154,9 @@
 	struct fsnotify_mark *fsn_mark;
 	bool send;
 
+	pr_debug("%s: group=%p inode=%p mask=%x data=%p data_type=%d\n",
+		 __func__, group, inode, mask, data, data_type);
+
 	fsn_mark = fsnotify_find_inode_mark(group, inode);
 	if (!fsn_mark)
 		return false;