linux-kernel - Re: [PATCH v2 0/4] proc: improve root readdir latency with many threads

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Message-ID: <YsyF3rK1YV57HDM/@casper.infradead.org>
Date:   Mon, 11 Jul 2022 21:19:42 +0100
From:   Matthew Wilcox <willy@...radead.org>
To:     Brian Foster <bfoster@...hat.com>
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        ikent@...hat.com, onestero@...hat.com
Subject: Re: [PATCH v2 0/4] proc: improve root readdir latency with many
 threads

On Mon, Jul 11, 2022 at 09:52:33AM -0400, Brian Foster wrote:
> Hi all,
> 
> Here's v2 of the /proc readdir optimization patches. See v1 for the full
> introductary cover letter.

I really don't want to change the radix tree or IDR code.  That's why
I did the conversion of the pid code to use the XArray for you.

> The refactoring in v2 adds a bit more to the idr code, but it remains
> trivial with respect to eventual xarray (tag -> mark) conversion. On
> that topic, I'm still looking for some feedback in the v1 thread [1] on
> the prospective approach...

Oh, I missed the last few emails in that thread due to being on holiday.
I'll go back and read/reply to them now.