fsnotify: rename fsnotify_mark_entry to just fsnotify_mark

The name is long and it serves no real purpose.  So rename
fsnotify_mark_entry to just fsnotify_mark.

Signed-off-by: Eric Paris <eparis@redhat.com>
diff --git a/include/linux/fs.h b/include/linux/fs.h
index e5598d2..85fe89c 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -768,7 +768,7 @@
 
 #ifdef CONFIG_FSNOTIFY
 	__u32			i_fsnotify_mask; /* all events this inode cares about */
-	struct hlist_head	i_fsnotify_mark_entries; /* fsnotify mark entries */
+	struct hlist_head	i_fsnotify_marks;
 #endif
 
 	unsigned long		i_state;