linux-kernel - Re: [PATCH] mm: Move p?d_alloc

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Message-Id: <20200617181226.ab213ea1531b5dd6eca1b0b6@linux-foundation.org>
Date:   Wed, 17 Jun 2020 18:12:26 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Joerg Roedel <joro@...tes.org>
Cc:     peterz@...radead.org, jroedel@...e.de,
        Andy Lutomirski <luto@...nel.org>,
        Abdul Haleem <abdhalee@...ux.vnet.ibm.com>,
        Satheesh Rajendran <sathnaga@...ux.vnet.ibm.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        manvanth@...ux.vnet.ibm.com, linux-next@...r.kernel.org,
        Steven Rostedt <rostedt@...dmis.org>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linuxppc-dev@...ts.ozlabs.org, hch@....de,
        linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org
Subject: Re: [PATCH] mm: Move p?d_alloc_track to separate header file

On Tue,  9 Jun 2020 14:05:33 +0200 Joerg Roedel <joro@...tes.org> wrote:

> From: Joerg Roedel <jroedel@...e.de>
> 
> The functions are only used in two source files, so there is no need
> for them to be in the global <linux/mm.h> header. Move them to the new
> <linux/pgalloc-track.h> header and include it only where needed.
> 
> ...
>
> new file mode 100644
> index 000000000000..1dcc865029a2
> --- /dev/null
> +++ b/include/linux/pgalloc-track.h
> @@ -0,0 +1,51 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +#ifndef _LINUX_PGALLLC_TRACK_H
> +#define _LINUX_PGALLLC_TRACK_H

hm, no #includes.  I guess this is OK, given the limited use.

But it does make one wonder whether ioremap.c should be moved from lib/
to mm/ and this file should be moved from include/linux/ to mm/.

Oh well.