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: <168683994075.282246.17689753653419770593.b4-ty@mit.edu>
Date:   Thu, 15 Jun 2023 10:59:52 -0400
From:   "Theodore Ts'o" <tytso@....edu>
To:     linux-ext4@...r.kernel.org, Brian Foster <bfoster@...hat.com>
Cc:     "Theodore Ts'o" <tytso@....edu>,
        Ritesh Harjani <ritesh.list@...il.com>, Jan Kara <jack@...e.cz>
Subject: Re: [PATCH v2] ext4: allow concurrent unaligned dio overwrites


On Tue, 14 Mar 2023 09:07:59 -0400, Brian Foster wrote:
> We've had reports of significant performance regression of sub-block
> (unaligned) direct writes due to the added exclusivity restrictions
> in ext4. The purpose of the exclusivity requirement for unaligned
> direct writes is to avoid data corruption caused by unserialized
> partial block zeroing in the iomap dio layer across overlapping
> writes.
> 
> [...]

Applied, thanks!

[1/1] ext4: allow concurrent unaligned dio overwrites
      commit: d3dfa834d0c6c6a168a745185fe6a64c901c186f

Best regards,
-- 
Theodore Ts'o <tytso@....edu>

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ