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

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To: Kairui Song <kasong@xxxxxxxxxxx>
Subject: Re: [PATCH 16/24] mm/swap: reduce scope of get_swap_device in swapin path
From: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Date: Sun, 19 Nov 2023 21:12:14 +0000
Cc: linux-mm@xxxxxxxxx, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, "Huang, Ying" <ying.huang@xxxxxxxxx>, David Hildenbrand <david@xxxxxxxxxx>, Hugh Dickins <hughd@xxxxxxxxxx>, Johannes Weiner <hannes@xxxxxxxxxxx>, Michal Hocko <mhocko@xxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <20231119194740.94101-17-ryncsn@gmail.com>
References: <20231119194740.94101-1-ryncsn@gmail.com> <20231119194740.94101-17-ryncsn@gmail.com>

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)) {

Follow-Ups:
- Re: [PATCH 16/24] mm/swap: reduce scope of get_swap_device in swapin path
  - From: Kairui Song

References:
- [PATCH 00/24] Swapin path refactor for optimization and bugfix
  - From: Kairui Song
- [PATCH 16/24] mm/swap: reduce scope of get_swap_device in swapin path
  - From: Kairui Song

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