linux-kernel - Re: [PATCH v2 0/6] Improve visibility of writeback

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Date: Thu, 28 Mar 2024 15:15:03 -0400
From: Kent Overstreet <kent.overstreet@...ux.dev>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Kemeng Shi <shikemeng@...weicloud.com>, willy@...radead.org, 
	jack@...e.cz, bfoster@...hat.com, tj@...nel.org, dsterba@...e.com, 
	mjguzik@...il.com, dhowells@...hat.com, linux-kernel@...r.kernel.org, 
	linux-mm@...ck.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH v2 0/6] Improve visibility of writeback

On Wed, Mar 27, 2024 at 10:40:10AM -0700, Andrew Morton wrote:
> On Wed, 27 Mar 2024 23:57:45 +0800 Kemeng Shi <shikemeng@...weicloud.com> wrote:
> 
> > This series tries to improve visilibity of writeback.
> 
> Well...  why?  Is anyone usefully using the existing instrumentation? 
> What is to be gained by expanding it further?  What is the case for
> adding this code?
> 
> I don't recall hearing of anyone using the existing debug
> instrumentation so perhaps we should remove it!

Remove debug instrumentation!? Surely you just?

I generally don't hear from users of my code when things are working, I
only expect to hear from people when it's not.