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

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Date:   Thu, 18 Jun 2020 12:17:59 +0300
From:   Mike Rapoport <rppt@...ux.ibm.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Joerg Roedel <joro@...tes.org>, 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>,
        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 Wed, Jun 17, 2020 at 06:12:26PM -0700, Andrew Morton wrote:
> 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/.

It makes sense, but I am anyway planning consolidation of pgalloc.h, so
most probably pgalloc-track will not survive until 5.9-rc1 :)

If you think that it worth moving ioremap.c to mm/ regardless of chrun,
I can send a patch for that.

> Oh well.

-- 
Sincerely yours,
Mike.