linux-kernel - Re: Build regressions/improvements in v4.0-rc1

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Message-ID: <6141970.YzWJy8akUr@wuerfel>
Date:	Mon, 23 Feb 2015 12:24:38 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	ALSA Development Mailing List <alsa-devel@...a-project.org>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	Matthew Wilcox <willy@...ux.intel.com>
Subject: Re: Build regressions/improvements in v4.0-rc1

On Monday 23 February 2015 11:28:12 Geert Uytterhoeven wrote:
> On Mon, Feb 23, 2015 at 11:24 AM, Arnd Bergmann <arnd@...db.de> wrote:
> > On Monday 23 February 2015 10:14:55 Geert Uytterhoeven wrote:
> >> On Mon, Feb 23, 2015 at 10:03 AM, Arnd Bergmann <arnd@...db.de> wrote:
> >> >> >   + /home/kisskb/slave/src/fs/dax.c: error: implicit declaration of function 'copy_user_page' [-Werror=implicit-function-declaration]:  => 266:2
> 
> > I checked the other architectures, and found that the same is missing on
> > ARC, so we should add both:
> >
> > diff --git a/fs/Kconfig b/fs/Kconfig
> > index ec35851e5b71..a24d496787d6 100644
> > --- a/fs/Kconfig
> > +++ b/fs/Kconfig
> > @@ -36,7 +36,7 @@ source "fs/nilfs2/Kconfig"
> >  config FS_DAX
> >         bool "Direct Access (DAX) support"
> >         depends on MMU
> > -       depends on !(ARM || MIPS || SPARC)
> > +       depends on !(ARC || ARM || MIPS || SH || SPARC)
> >         help
> >           Direct Access (DAX) can be used on memory-backed block devices.
> >           If the block device supports DAX and the filesystem supports DAX,
> >
> >
> > It's also not implemented on c6x and blackfin, but both of them have
> > MMU=n, so they are already excluded.
> 
> Exactly.
> 
> Acked-by: Geert Uytterhoeven <geert@...ux-m68k.org>

Thanks, let me submit that as a proper patch with a changelog then.

	Arnd
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