linux-kernel - Re: [RFC PATCH v2] fuse: add optional workqueue to periodically invalidate expired dentries

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: <89257861-9f17-4c07-8358-f90392032983@bsbernd.com>
Date: Wed, 16 Apr 2025 17:55:40 +0200
From: Bernd Schubert <bernd@...ernd.com>
To: Luis Henriques <luis@...lia.com>, Miklos Szeredi <miklos@...redi.hu>
Cc: Laura Promberger <laura.promberger@...n.ch>,
 Dave Chinner <david@...morbit.com>, Matt Harvey <mharvey@...ptrading.com>,
 linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
 kernel-dev@...lia.com
Subject: Re: [RFC PATCH v2] fuse: add optional workqueue to periodically
 invalidate expired dentries

Hi Luis

On 4/15/25 15:38, Luis Henriques wrote:
> This patch adds a new mount option that will allow to set a workqueue to
> periodically invalidate expired dentries.  When this parameter is set,
> every new (or revalidated) dentry will be added to a tree, sorted by
> expiry time.  The workqueue period is set when a filesystem is mounted
> using this new parameter, and can not be less than 5 seconds.


I will look into it tomorrow. I wonder a bit if we can extend it to 
provide an LRU and to limit max cached dentries without a timeout. Need 
to think about details.


Thanks,
Bernd