linux-kernel - Re: [PATCH] trace/events/page_ref: add page info to page

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

Message-ID: <ZyjOkSvYYKdFrRgt@casper.infradead.org>
Date: Mon, 4 Nov 2024 13:39:29 +0000
From: Matthew Wilcox <willy@...radead.org>
To: Kassey Li quic <quic_yingangl@...cinc.com>
Cc: "Vlastimil Babka (SUSE)" <vbabka@...nel.org>, akpm@...ux-foundation.org,
	minchan@...nel.org, vbabka@...e.cz, iamjoonsoo.kim@....com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH] trace/events/page_ref: add page info to page_ref trace
 event

On Mon, Nov 04, 2024 at 03:35:37PM +0800, Kassey Li quic wrote:
> > > In many kernel code we are talking with page other than pfn,
> > > here we added page algin with pfn.
> > How exactly would this help you, what are you doing with the trace?
> 
> we met some problem where filesystem held the page.
> 
> we can show the page pointer other than pfn in filesystem code.

Don't do that.  Change the filesystem code to show the pfn, and send
*that* patch instead.