linux-kernel - Re: [RFC PATCH 00/11] shmem: high order folios support in write path

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: <ZT7D4bOTBWnaqAkN@casper.infradead.org>
Date:   Sun, 29 Oct 2023 20:43:13 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     Daniel Gomez <da.gomez@...sung.com>
Cc:     "minchan@...nel.org" <minchan@...nel.org>,
        "senozhatsky@...omium.org" <senozhatsky@...omium.org>,
        "axboe@...nel.dk" <axboe@...nel.dk>,
        "djwong@...nel.org" <djwong@...nel.org>,
        "hughd@...gle.com" <hughd@...gle.com>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "mcgrof@...nel.org" <mcgrof@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "linux-xfs@...r.kernel.org" <linux-xfs@...r.kernel.org>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "gost.dev@...sung.com" <gost.dev@...sung.com>,
        Pankaj Raghav <p.raghav@...sung.com>
Subject: Re: [RFC PATCH 00/11] shmem: high order folios support in write path

On Sat, Oct 28, 2023 at 09:15:34PM +0000, Daniel Gomez wrote:
> This series try to add support for high order folios in shmem write and
> fallocate paths when swap is disabled (noswap option). This is part of the
> Large Block Size (LBS) effort [1][2] and a continuation of the shmem work from
> Luis here [3] following Matthew Wilcox's suggestion [4] regarding the path to
> take for the folio allocation order calculation.

I don't see how this is part of the LBS effort.  shmem doesn't use a
block device.  swap might, but that's a separate problem, as you've
pointed out.