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Message-Id: <20220217125553.88a9ce7723ea8fd39c76a199@linux-foundation.org>
Date:   Thu, 17 Feb 2022 12:55:53 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     kernel test robot <lkp@...el.com>
Cc:     Christoph Hellwig <hch@....de>, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Johannes Weiner <hannes@...xchg.org>,
        Logan Gunthorpe <logang@...tatee.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Linux Memory Management List <linux-mm@...ck.org>
Subject: Re: [hnaz-mm:master 237/343]
 arch/powerpc/mm/book3s64/pgtable.c:540:15: warning: no previous prototype
 for 'memremap_compat_align'

On Fri, 18 Feb 2022 03:46:17 +0800 kernel test robot <lkp@...el.com> wrote:

> tree:   https://github.com/hnaz/linux-mm master
> head:   8857950589bc3b4920d69c3e0b2c06d33f445d21
> commit: 236e08e72c118cbb20e780cc853378e2c341825c [237/343] mm: don't include <linux/memremap.h> in <linux/mm.h>
> config: powerpc64-randconfig-m031-20220217 (https://download.01.org/0day-ci/archive/20220217/202202172347.lJ6oYVOE-lkp@intel.com/config)
> compiler: powerpc64le-linux-gcc (GCC) 11.2.0
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # https://github.com/hnaz/linux-mm/commit/236e08e72c118cbb20e780cc853378e2c341825c
>         git remote add hnaz-mm https://github.com/hnaz/linux-mm
>         git fetch --no-tags hnaz-mm master
>         git checkout 236e08e72c118cbb20e780cc853378e2c341825c
>         # save the config file to linux build tree
>         mkdir build_dir
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash arch/powerpc/mm/book3s64/
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All warnings (new ones prefixed by >>):
> 
> >> arch/powerpc/mm/book3s64/pgtable.c:540:15: warning: no previous prototype for 'memremap_compat_align' [-Wmissing-prototypes]
>      540 | unsigned long memremap_compat_align(void)
>          |               ^~~~~~~~~~~~~~~~~~~~~

Thanks, I did this.

--- a/arch/powerpc/mm/book3s64/pgtable.c~mm-dont-include-linux-memremaph-in-linux-mmh-fix-2-fix
+++ a/arch/powerpc/mm/book3s64/pgtable.c
@@ -6,6 +6,7 @@
 #include <linux/sched.h>
 #include <linux/mm_types.h>
 #include <linux/memblock.h>
+#include <linux/memremap.h>
 #include <linux/debugfs.h>
 #include <misc/cxl-base.h>
 
_


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