diff -drupN a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h
--- a/fs/squashfs/squashfs.h	2017-10-21 18:09:07.000000000 +0300
+++ b/fs/squashfs/squashfs.h	2022-06-09 05:02:35.000000000 +0300
@@ -111,3 +111,5 @@ extern const struct inode_operations squ
 
 /* xattr.c */
 extern const struct xattr_handler *squashfs_xattr_handlers[];
+/* lzma wrapper.c */
+extern  const struct squashfs_decompressor squashfs_lzma_comp_ops;