On Wed, 2007-06-06 at 09:35 -0700, William Lee Irwin III wrote:
> On Wed, Jun 06, 2007 at 05:26:49PM +0100, Mel Gorman wrote:
> > I do not believe this is Nick's problem. I encountered the same issue and
> > the bisect ended up here;
> > # BISECT HERE
> > mm-variable-length-argument-support.patch
> > mm-variable-length-argument-support-fix.patch
> > # BISECT BAD
> > Reverting those two patches boots ok on my standalone x86 laptop.
> > Patch authors cc'd. I have not read the patches yet to see what might
> > be the problem.
>
> I found this a while ago and peterz already has a tentative fix for it at
> http://programming.kicks-ass.net/kernel-patches/max_arg_pages/move_anon_vma.patch
> I'm sure he himself will chime in with more/better code when he returns.
Ah, yes indeed. We were discussing wether it would be better to update
page->index (as this patch does) or not change vma->vm_pgoff. Bill
argued that the latter would be safe, it would just limit the merge
capabilities of the anon vma (and the stack rarely, if ever, merges
anyway).
I myself an not quite sure on the effects of ->vm_pgoff of anon vmas
yet.
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