Subject: Re: linux-next: build failure after merge of the akpm-current tree

From: Stephen Rothwell <[email-masked]>
Date: Mon, 19 Jan 2015 18:35:43 +1100

Hi Andrew,

On Mon, 19 Jan 2015 18:28:53 +1100 Stephen Rothwell <[email-masked]> wrote:
>
> After merging the akpm-current tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
> 
> mm/filemap_xip.c:304:2: error: unknown field 'remap_pages' specified in initializer
>   .remap_pages = generic_file_remap_pages,
>   ^
> mm/filemap_xip.c:304:17: error: 'generic_file_remap_pages' undeclared here (not in a function)
>   .remap_pages = generic_file_remap_pages,
>                  ^
> 
> Caused by commit 76f0255272b6 ("mm: drop vm_ops->remap_pages and
> generic_file_remap_pages() stub").  Looks like one was missed - grep is
> your friend.
> 
> I have added this patch for today:
> 
> From: Stephen Rothwell <[email-masked]>
> Date: Mon, 19 Jan 2015 18:16:15 +1100
> Subject: [PATCH] mm: drop vm_ops->remap_pages and generic_file_remap_pages() stub fix
> 
> Signed-off-by: Stephen Rothwell <[email-masked]>
> ---
>  mm/filemap_xip.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/mm/filemap_xip.c b/mm/filemap_xip.c
> index 0d105aeff82f..70c09da1a419 100644
> --- a/mm/filemap_xip.c
> +++ b/mm/filemap_xip.c
> @@ -301,7 +301,6 @@ out:
>  static const struct vm_operations_struct xip_file_vm_ops = {
>  	.fault	= xip_file_fault,
>  	.page_mkwrite	= filemap_page_mkwrite,
> -	.remap_pages = generic_file_remap_pages,
>  };
>  
>  int xip_file_mmap(struct file * file, struct vm_area_struct * vma)
> -- 
> 2.1.4

I then had to fix up the later patch "dax,ext2: replace the XIP page
fault handler with the DAX page fault handler" because the above line
was already removed.

-- 
Cheers,
Stephen Rothwell                    [email-masked]