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 <20240515091727.22034-1-laoar.shao@gmail.com>
In-Reply-To: <20240515091727.22034-1-laoar.shao@gmail.com>
From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed, 15 May 2024 09:05:24 -0700
Message-ID: <CAHk-=wgcnsjRvJ3d_Pm6HZ+0Pf_er4Zt2T04E1TSCDywECSJJQ@mail.gmail.com>
Subject: Re: [PATCH] vfs: Delete the associated dentry when deleting a file
To: Yafang Shao <laoar.shao@gmail.com>, kernel test robot <oliver.sang@intel.com>
Cc: brauner@kernel.org, jack@suse.cz, linux-fsdevel@vger.kernel.org, 
	longman@redhat.com, viro@zeniv.linux.org.uk, walters@verbum.org, 
	wangkai86@huawei.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, 
	Matthew Wilcox <willy@infradead.org>
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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@gmail.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.