linux-kernel - Re: [PATCH] vfs: Delete the associated dentry when deleting a file

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: <CAHk-=wgcnsjRvJ3d_Pm6HZ+0Pf_er4Zt2T04E1TSCDywECSJJQ@mail.gmail.com>
Date: Wed, 15 May 2024 09:05:24 -0700
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Yafang Shao <laoar.shao@...il.com>, kernel test robot <oliver.sang@...el.com>
Cc: brauner@...nel.org, jack@...e.cz, linux-fsdevel@...r.kernel.org, 
	longman@...hat.com, viro@...iv.linux.org.uk, walters@...bum.org, 
	wangkai86@...wei.com, linux-mm@...ck.org, linux-kernel@...r.kernel.org, 
	Matthew Wilcox <willy@...radead.org>
Subject: Re: [PATCH] vfs: Delete the associated dentry when deleting a file

Oliver,
 is there any chance you could run this through the test robot
performance suite? The original full patch at

    https://lore.kernel.org/all/20240515091727.22034-1-laoar.shao@gmail.com/

and it would be interesting if the test robot could see if the patch
makes any difference on any other loads?

Thanks,
                     Linus

On Wed, 15 May 2024 at 02:17, Yafang Shao <laoar.shao@...il.com> wrote:
>
> Our applications, built on Elasticsearch[0], frequently create and delete
> files. These applications operate within containers, some with a memory
> limit exceeding 100GB. Over prolonged periods, the accumulation of negative
> dentries within these containers can amount to tens of gigabytes.
>
> Upon container exit, directories are deleted. However, due to the numerous
> associated dentries, this process can be time-consuming. Our users have
> expressed frustration with this prolonged exit duration, which constitutes
> our first issue.