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

From: Oleg Nesterov <[email-masked]>
Date: Fri, 17 Jul 2015 00:17:45 +0200

On 07/17, Stephen Rothwell wrote:
>
> Hi Andrew,
>
> After merging the akpm-current tree, today's linux-next build (lots with
> CONFIG_MMU not set) failed like this:
>
> fs/built-in.o:(.rodata+0x1060): undefined reference to `filemap_page_mkwrite'
>
> Caused by commit
>
>   fb416a02f75c ("mm: move ->mremap() from file_operations to vm_operations_struct").

Yes, please see

	[mmotm:master 140/321] fs/built-in.o:undefined reference to `filemap_page_mkwrite'
	http://marc.info/?t=143700878100001

sorry. I'll send the fix soon.

> filemap_page_mkwrite only exists when CONFIG_MMU is set.

Yes, and I still think CONFGI_AIO makes no sense in this case.

Oleg.