linux-kernel - Re: [PATCH 2/2] mm/page_alloc: use get_pfnblock_migratetype to avoid extra page_to

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20230821212426.GE106501@cmpxchg.org>
Date:   Mon, 21 Aug 2023 17:24:26 -0400
From:   Johannes Weiner <hannes@...xchg.org>
To:     Kemeng Shi <shikemeng@...weicloud.com>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        akpm@...ux-foundation.org, baolin.wang@...ux.alibaba.com,
        mgorman@...hsingularity.net, david@...hat.com, willy@...radead.org
Subject: Re: [PATCH 2/2] mm/page_alloc: use get_pfnblock_migratetype to avoid
 extra page_to_pfn

On Fri, Aug 11, 2023 at 07:59:45PM +0800, Kemeng Shi wrote:
> We have get_pageblock_migratetype and get_pfnblock_migratetype to get
> migratetype of page. get_pfnblock_migratetype accepts both page and pfn
> from caller while get_pageblock_migratetype only accept page and get pfn
> with page_to_pfn from page.
> In case we already record pfn of page, we can simply call
> get_pfnblock_migratetype to avoid a page_to_pfn.
> 
> Signed-off-by: Kemeng Shi <shikemeng@...weicloud.com>

Acked-by: Johannes Weiner <hannes@...xchg.org>