Hi Andrew,

On Thu, 6 Mar 2014 14:58:26 -0800 Andrew Morton <akpm@linux-foundation.org> wrote:
>
> On Thu, 6 Mar 2014 18:08:52 +1100 Stephen Rothwell <sfr@canb.auug.org.au> wrote:
> 
> > After merging the akpm-current tree, today's linux-next build (arm
> > multi_v7_defconfig) failed like this:
> > 
> > ...
> >
> > and on and on ...
> > 
> > Caused by commit 0d9ad4220e6d ("mm: per-thread vma caching") which adds
> > the include of linux/vmacache.h (which includes linux/mm.h) into
> > linux/sched.h ... There is a reason that we did not include linux/mm.h
> > into sched.h.
> 
> Yeah.
> 
> > --- /dev/null
> > +++ b/include/linux/vmacachedefs.h
> > @@ -0,0 +1,9 @@
> > +
> > +#ifndef __LINUX_VMACACHEDEFS_H
> > +#define __LINUX_VMACACHEDEFS_H
> > +
> > +#define VMACACHE_BITS 2
> > +#define VMACACHE_SIZE (1U << VMACACHE_BITS)
> > +#define VMACACHE_MASK (VMACACHE_SIZE - 1)
> > +
> > +#endif /* __LINUX_VMACACHEDEFS_H */
> 
> I just did pretty much the same thing:
> 
> 
> From: Andrew Morton <akpm@linux-foundation.org>
> Subject: mm-per-thread-vma-caching-fix-3

I will replace my patch with this today.

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au