On Wed, Jun 06, 2007 at 01:36:58AM -0700, Andrew Morton wrote:
> On Tue, 05 Jun 2007 17:05:27 +0200 Peter Zijlstra <[email protected]> wrote:
>
> > From: Ollie Wild <[email protected]>
> >
> > Remove the arg+env limit of MAX_ARG_PAGES by copying the strings directly
> > from the old mm into the new mm.
> >
> > We create the new mm before the binfmt code runs, and place the new stack
> > at the very top of the address space. Once the binfmt code runs and figures
> > out where the stack should be, we move it downwards.
> >
> > It is a bit peculiar in that we have one task with two mm's, one of which is
> > inactive.
> >
> > ...
> >
> > + flush_cache_page(bprm->vma, kpos,
> > + page_to_pfn(kmapped_page));
>
> Breaks SuperH:
>
> fs/exec.c: In function `bprm_mm_init':
> fs/exec.c:268: warning: unused variable `vma'
> fs/exec.c: In function `copy_strings':
> fs/exec.c:431: error: structure has no member named `vma'
>
More pointedly, bprm->vma doesn't exist if CONFIG_MMU=n, which Andrew's
config seems to have ;-)
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