new helper: file_inode(file)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index 890b894..61fa09e 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -624,7 +624,7 @@
 
 	dxtrace(printk("In htree_fill_tree, start hash: %x:%x\n", start_hash,
 		       start_minor_hash));
-	dir = dir_file->f_path.dentry->d_inode;
+	dir = file_inode(dir_file);
 	if (!(EXT3_I(dir)->i_flags & EXT3_INDEX_FL)) {
 		hinfo.hash_version = EXT3_SB(dir->i_sb)->s_def_hash_version;
 		if (hinfo.hash_version <= DX_HASH_TEA)
@@ -638,7 +638,7 @@
 	}
 	hinfo.hash = start_hash;
 	hinfo.minor_hash = 0;
-	frame = dx_probe(NULL, dir_file->f_path.dentry->d_inode, &hinfo, frames, &err);
+	frame = dx_probe(NULL, file_inode(dir_file), &hinfo, frames, &err);
 	if (!frame)
 		return err;