Re: [PATCH 16/24] mm/swap: reduce scope of get_swap_device in swapin path

[Matthew Wilcox]

On Mon, Nov 20, 2023 at 03:47:32AM +0800, Kairui Song wrote:
>  	page = swapin_readahead(entry, GFP_HIGHUSER_MOVABLE,
>  				vmf, &cache_result);
> -	if (page) {
> +	if (PTR_ERR(page) == -EBUSY) {

	if (page == ERR_PTR(-EBUSY)) {