On Thu, 18 Dec 2008 16:29:52 +0100
Andrea Arcangeli <aarcange@xxxxxxxxxx> wrote:
> @@ -484,11 +476,34 @@
> if (page) {
> get_page(page);
> page_dup_rmap(page);
> + if (is_cow_mapping(vm_flags) && PageAnon(page)) {
> + if (unlikely(TestSetPageLocked(page)))
> + forcecow = 1;
> + else {
> + if (unlikely(page_count(page) !=
> + page_mapcount(page)
> + + !!PageSwapCache(page)))
> + forcecow = 1;
> + unlock_page(page);
> + }
> + }
> rss[!!PageAnon(page)]++;
> }
- Why do you check only Anon rather than all MAP_PRIVATE mappings ?
Thanks,
-Kame
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