linux-kernel - Re: [PATCH] netfs: Fix writeback that needs to go to both server and cache

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: <20240722-umringt-kurgast-1fbd329ad5cc@brauner>
Date: Mon, 22 Jul 2024 15:41:57 +0200
From: Christian Brauner <brauner@...nel.org>
To: David Howells <dhowells@...hat.com>
Cc: Christian Brauner <brauner@...nel.org>,
	Jeff Layton <jlayton@...nel.org>,
	netfs@...ts.linux.dev,
	linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] netfs: Fix writeback that needs to go to both server and cache

On Fri, 19 Jul 2024 15:20:18 +0100, David Howells wrote:
> When netfslib is performing writeback (ie. ->writepages), it maintains two
> parallel streams of writes, one to the server and one to the cache, but it
> doesn't mark either stream of writes as active until it gets some data that
> needs to be written to that stream.
> 
> This is done because some folios will only be written to the cache
> (e.g. copying to the cache on read is done by marking the folios and
> letting writeback do the actual work) and sometimes we'll only be writing
> to the server (e.g. if there's no cache).
> 
> [...]

Applied to the vfs.fixes branch of the vfs/vfs.git tree.
Patches in the vfs.fixes branch should appear in linux-next soon.

Please report any outstanding bugs that were missed during review in a
new review to the original patch series allowing us to drop it.

It's encouraged to provide Acked-bys and Reviewed-bys even though the
patch has now been applied. If possible patch trailers will be updated.

Note that commit hashes shown below are subject to change due to rebase,
trailer updates or similar. If in doubt, please check the listed branch.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git
branch: vfs.fixes

[1/1] netfs: Fix writeback that needs to go to both server and cache
      https://git.kernel.org/vfs/vfs/c/55e81a4aa9ae