RE: [PATCH v3 4/6] mm: don't export memory_add_physaddr_to_nid in arch specific directory

[Justin He <Justin.He@xxxxxxx>]

Hi Matthew

> -----Original Message-----
> From: Matthew Wilcox <willy@xxxxxxxxxxxxx>
> Sent: Thursday, July 9, 2020 10:11 AM
> To: Justin He <Justin.He@xxxxxxx>
> Cc: Catalin Marinas <Catalin.Marinas@xxxxxxx>; Will Deacon
> <will@xxxxxxxxxx>; Tony Luck <tony.luck@xxxxxxxxx>; Fenghua Yu
> <fenghua.yu@xxxxxxxxx>; Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>; Rich
> Felker <dalias@xxxxxxxx>; Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>; Andy
> Lutomirski <luto@xxxxxxxxxx>; Peter Zijlstra <peterz@xxxxxxxxxxxxx>;
> Thomas Gleixner <tglx@xxxxxxxxxxxxx>; Ingo Molnar <mingo@xxxxxxxxxx>;
> Borislav Petkov <bp@xxxxxxxxx>; David Hildenbrand <david@xxxxxxxxxx>;
> x86@xxxxxxxxxx; H. Peter Anvin <hpa@xxxxxxxxx>; Dan Williams
> <dan.j.williams@xxxxxxxxx>; Vishal Verma <vishal.l.verma@xxxxxxxxx>; Dave
> Jiang <dave.jiang@xxxxxxxxx>; Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>;
> Baoquan He <bhe@xxxxxxxxxx>; Chuhong Yuan <hslester96@xxxxxxxxx>; Mike
> Rapoport <rppt@xxxxxxxxxxxxx>; Logan Gunthorpe <logang@xxxxxxxxxxxx>;
> Masahiro Yamada <masahiroy@xxxxxxxxxx>; Michal Hocko <mhocko@xxxxxxxx>;
> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; linux-
> ia64@xxxxxxxxxxxxxxx; linux-sh@xxxxxxxxxxxxxxx; linux-nvdimm@xxxxxxxxxxxx;
> linux-mm@xxxxxxxxx; Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>; Kaly
> Xin <Kaly.Xin@xxxxxxx>
> Subject: Re: [PATCH v3 4/6] mm: don't export memory_add_physaddr_to_nid in
> arch specific directory
> 
> On Thu, Jul 09, 2020 at 10:06:27AM +0800, Jia He wrote:
> > After a general version of __weak memory_add_physaddr_to_nid implemented
> > and exported , it is no use exporting twice in arch directory even if
> > e,g, ia64/x86 have their specific version.
> >
> > This is to suppress the modpost warning:
> > WARNING: modpost: vmlinux: 'memory_add_physaddr_to_nid' exported twice.
> > Previous export was in vmlinux
> 
> It's bad form to introduce a warning and then send a follow-up patch to
> fix the warning.  Just fold this patch into patch 1/6.
Thanks, will do

Cheers,
Justin He