Nick Piggin wrote: > Jes Sorensen wrote: >> We don't want COW here as the access is backed by special behavior in >> the memory controller. We only allow shared mappings for that reason. >> > No problem, I think you should just stop using the VM_PFNMAP flag then. > [Linus should jump in here if I'm wrong ;)] I'd have to go back and find the discussion to verify, but if I remember correctly the conclusion was that I needed to use it in order to make sure that vm_normal_page() didn't start thinking it was in fact a real page, ie. VM_PFNMAP + never a COW mapping.. Chers, Jes - : send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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