new helper: file_inode(file)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/security/apparmor/file.c b/security/apparmor/file.c
index cd21ec5..fdaa50c 100644
--- a/security/apparmor/file.c
+++ b/security/apparmor/file.c
@@ -449,8 +449,8 @@
 		 u32 request)
 {
 	struct path_cond cond = {
-		.uid = file->f_path.dentry->d_inode->i_uid,
-		.mode = file->f_path.dentry->d_inode->i_mode
+		.uid = file_inode(file)->i_uid,
+		.mode = file_inode(file)->i_mode
 	};
 
 	return aa_path_perm(op, profile, &file->f_path, PATH_DELEGATE_DELETED,