helper for reading ->d_count

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index f42dbe1..3092df36 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -324,6 +324,11 @@
 	return ret;
 }
 
+static inline unsigned d_count(struct dentry *dentry)
+{
+	return dentry->d_count;
+}
+
 /* validate "insecure" dentry pointer */
 extern int d_validate(struct dentry *, struct dentry *);