linux-kernel - Re: [f2fs-dev] [PATCH] f2fs: set default valid_thresh

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: <03cc9db0-9294-40d5-8638-d9f71066b5ed@kernel.org>
Date: Thu, 9 Oct 2025 11:21:47 +0800
From: Chao Yu <chao@...nel.org>
To: Daeho Jeong <daeho43@...il.com>, linux-kernel@...r.kernel.org,
 linux-f2fs-devel@...ts.sourceforge.net, kernel-team@...roid.com
Cc: chao@...nel.org, Daeho Jeong <daehojeong@...gle.com>
Subject: Re: [f2fs-dev] [PATCH] f2fs: set default valid_thresh_ratio to 80 for
 zoned devices

On 10/4/2025 6:49 AM, Daeho Jeong wrote:
> From: Daeho Jeong <daehojeong@...gle.com>
> 
> Zoned storage devices provide marginal over-capacity space, typically
> around 10%, for filesystem level storage control.
> 
> By utilizing this extra capacity, we can safely reduce the default
> 'valid_thresh_ratio' to 80. This action helps to significantly prevent
> excessive garbage collection (GC) and the resulting power consumption,
> as the filesystem becomes less aggressive about cleaning segments
> that still hold a high percentage of valid data.
> 
> Signed-off-by: Daeho Jeong <daehojeong@...gle.com>

Reviewed-by: Chao Yu <chao@...nel.org>

Thanks,