linux-kernel - Re: [PATCH] mm: remove io-mapping

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Message-ID: <4703a9a7-ad1f-493a-ac67-e6dea05cafb1@lucifer.local>
Date: Thu, 24 Jul 2025 17:19:41 +0100
From: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
To: David Hildenbrand <david@...hat.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
        Christoph Hellwig <hch@...radead.org>,
        "Liam R . Howlett" <Liam.Howlett@...cle.com>,
        Vlastimil Babka <vbabka@...e.cz>, Mike Rapoport <rppt@...nel.org>,
        Suren Baghdasaryan <surenb@...gle.com>, Michal Hocko <mhocko@...e.com>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH] mm: remove io-mapping

On Thu, Jul 24, 2025 at 06:16:11PM +0200, David Hildenbrand wrote:
> On 24.07.25 17:39, Lorenzo Stoakes wrote:
> > Sorry Andrew please ignore this for now, I'll send a v2 later.
> >
> > I'm not having a great day here...
> >
> > I wrongly assumed that, since this is wholly unused in practice, that nobody
> > would refer to it or include the header, but it turns out that's incorrect.
>
> So, do we have to keep all (and keep it in MAINTAINERS) or is it just about
> cleaning up the headers?

No we don't have to keep, I just sent this patch, then Vlastimil pointed out
off-list that there were a bunch of includes that I missed.

It's matching about how my day is going.

I had wrongly assumed since there are no actual users, that nobody would just
import this header for no reason. But hey. They do.

Apparently docs also reference it.

I'll just send a v2 tomorrow.

Cheers, Lorenzo