VFS: security/: d_backing_inode() annotations

most of the ->d_inode uses there refer to the same inode IO would
go to, i.e. d_backing_inode()

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/security/lsm_audit.c b/security/lsm_audit.c
index 69fdf3b..3b27e99 100644
--- a/security/lsm_audit.c
+++ b/security/lsm_audit.c
@@ -237,7 +237,7 @@
 
 		audit_log_d_path(ab, " path=", &a->u.path);
 
-		inode = a->u.path.dentry->d_inode;
+		inode = d_backing_inode(a->u.path.dentry);
 		if (inode) {
 			audit_log_format(ab, " dev=");
 			audit_log_untrustedstring(ab, inode->i_sb->s_id);
@@ -251,7 +251,7 @@
 		audit_log_format(ab, " name=");
 		audit_log_untrustedstring(ab, a->u.dentry->d_name.name);
 
-		inode = a->u.dentry->d_inode;
+		inode = d_backing_inode(a->u.dentry);
 		if (inode) {
 			audit_log_format(ab, " dev=");
 			audit_log_untrustedstring(ab, inode->i_sb->s_id);