304 			return invalfc(fc, "regular lower layers cannot follow data layers");  in ovl_mount_dir_check()
306 			return invalfc(fc, "too many lower directories, limit is %d",  in ovl_mount_dir_check()
323 	l = krealloc_array(ctx->lower, nr, sizeof(*l), GFP_KERNEL_ACCOUNT);  in ovl_ctx_realloc_lower()
327 	ctx->lower = l;  in ovl_ctx_realloc_lower()
354 		l = &ctx->lower[ctx->nr++];  in ovl_add_layer()
404 	struct ovl_fs_context_layer *l = ctx->lower;  in ovl_reset_lowerdirs()
423  *     Set "/lower1", "/lower2", and "/lower3" as lower layers and
424  *     "/data1" and "/data2" as data lower layers. Any existing lower
441 	/* drop all existing lower layers */  in ovl_parse_param_lowerdir()
448 		pr_err("cannot append lower layer");  in ovl_parse_param_lowerdir()
467 		pr_err("too many lower directories, limit is %d\n", OVL_MAX_STACK);  in ovl_parse_param_lowerdir()
473 		l = krealloc_array(ctx->lower, nr_lower, sizeof(*ctx->lower),  in ovl_parse_param_lowerdir()
478 		ctx->lower = l;  in ovl_parse_param_lowerdir()
483 	l = ctx->lower;  in ovl_parse_param_lowerdir()
516 				pr_err("regular lower layers cannot follow data lower layers");  in ovl_parse_param_lowerdir()
524 		/* This is a data lower layer. */  in ovl_parse_param_lowerdir()
641 	kfree(ctx->lower);  in ovl_fs_context_free()
710 	 * By default we allocate for three lower layers. It's likely  in ovl_init_fs_context()
713 	ctx->lower = kmalloc_array(3, sizeof(*ctx->lower), GFP_KERNEL_ACCOUNT);  in ovl_init_fs_context()
714 	if (!ctx->lower)  in ovl_init_fs_context()
782 		pr_err("lower data-only dirs require metacopy support.\n");  in ovl_fs_params_verify()