linux-kernel - Re: [RFC PATCH 00/11] Rust null block driver

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: <b9a1c1b2-3baa-2cad-31ae-8b14e4ee5709@acm.org>
Date:   Thu, 4 May 2023 11:36:01 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     Andreas Hindborg <nmi@...aspace.dk>
Cc:     Jens Axboe <axboe@...nel.dk>, Christoph Hellwig <hch@....de>,
        Keith Busch <kbusch@...nel.org>,
        Damien Le Moal <Damien.LeMoal@....com>,
        Hannes Reinecke <hare@...e.de>,
        lsf-pc@...ts.linux-foundation.org, rust-for-linux@...r.kernel.org,
        linux-block@...r.kernel.org, Matthew Wilcox <willy@...radead.org>,
        Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
        Björn Roy Baron <bjorn3_gh@...tonmail.com>,
        Benno Lossin <benno.lossin@...ton.me>,
        open list <linux-kernel@...r.kernel.org>, gost.dev@...sung.com
Subject: Re: [RFC PATCH 00/11] Rust null block driver

On 5/4/23 11:15, Andreas Hindborg wrote:
> If it is still unclear to you why this effort was started, please do let
> me know and I shall try to clarify further :)

It seems like I was too polite in my previous email. What I meant is that
rewriting code is useful if it provides a clear advantage to the users of
a driver. For null_blk, the users are kernel developers. The code that has
been posted is the start of a rewrite of the null_blk driver. The benefits
of this rewrite (making low-level memory errors less likely) do not outweigh
the risks that this effort will introduce functional or performance regressions.

Bart.