linux-kernel - Re: [PATCH 6/6] eventfs: clean up dentry ops and add revalidate function

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Message-ID: <CAHk-=wgrt4uUzxkboZtHOHkNbNBg9Hv4XAFTaNLTrpyq-VctyA@mail.gmail.com>
Date: Tue, 30 Jan 2024 13:36:12 -0800
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: Masami Hiramatsu <mhiramat@...nel.org>, linux-kernel@...r.kernel.org, 
	linux-trace-kernel@...r.kernel.org
Subject: Re: [PATCH 6/6] eventfs: clean up dentry ops and add revalidate function

On Tue, 30 Jan 2024 at 13:25, Steven Rostedt <rostedt@...dmis.org> wrote:
>
> I actually find the dentry's sticking around when their ref counts go to
> zero a feature. Tracing applications will open and close the eventfs files
> many times. If the dentry were to be deleted on every close, it would need
> to be create over again in short spurts.

Sure. I think this is literally a tuning thing, and we'll see if
anybody ever says "the dentry cache grows too much with tracefs".

               Linus