linux-kernel - Re: [PATCH] dcache: don't discard dentry_hashtable or d_hash

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Message-ID: <CAHk-=wjKbgRY+Jvu2GNaDXaAhyydOOW-R=0qCzM3mTLrZZg+iQ@mail.gmail.com>
Date: Fri, 30 Aug 2024 12:26:49 +1200
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Stephen Brennan <stephen.s.brennan@...cle.com>
Cc: Christian Brauner <brauner@...nel.org>, Alexander Viro <viro@...iv.linux.org.uk>, 
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, 
	linux-debuggers@...r.kernel.org, Jan Kara <jack@...e.cz>
Subject: Re: [PATCH] dcache: don't discard dentry_hashtable or d_hash_shift

On Fri, 30 Aug 2024 at 06:21, Stephen Brennan
<stephen.s.brennan@...cle.com> wrote:
>
> I know this "fix" may seem a bit silly, but reading out the dentry
> hashtable contents from a core dump or live system has been a real life
> saver when debugging dentry cache bloat issues. Could we do something
> like this (even making it opt-in would be great) for v6.11?

Sure, applied with fixes to the comment (you seem to have dropped a word).

             Linus