linux-kernel - Re: [PATCH RFC 01/10] mm: Move the page fragment allocator from 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 for Android: free password hash cracker in your pocket

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

Message-ID: <b5fe4c81-a7e6-4620-b0b6-a56ce7a2c304@csgroup.eu>
Date: Fri, 29 Mar 2024 17:19:14 +0000
From: Christophe Leroy <christophe.leroy@...roup.eu>
To: Yunsheng Lin <linyunsheng@...wei.com>, "davem@...emloft.net"
	<davem@...emloft.net>, "kuba@...nel.org" <kuba@...nel.org>,
	"pabeni@...hat.com" <pabeni@...hat.com>
CC: "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, David Howells
	<dhowells@...hat.com>, Andrew Morton <akpm@...ux-foundation.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: Re: [PATCH RFC 01/10] mm: Move the page fragment allocator from
 page_alloc into its own file



Le 28/03/2024 à 14:38, Yunsheng Lin a écrit :
> Inspired by [1], but use free_unref_page() to replace free_the_page()
> instead of __free_pages(), use VM_BUG_ON() to catch that we can use
> free_unref_page() directly, also add its own header file.
> 
> As the API is only used by the networking, it may make sense to
> move it to the networking directory like the page_pool does in the
> future if we can make the free_unref_page() callable outside of the
> mm subsystem. And we can utilize that to decouple the 'struct page'
> in the networking subsystem in the future.

I'm wondering if this page fragment allocator could replace the page 
fragment allocator used in powerpc to allocate fragment of pages for 
page tables.

See arch/powerpc/mm/pgtable-frag.c

Christophe