| Date | Wed, 3 Jul 2013 20:42:13 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH 12/13] mm: numa: Scan pages with elevated page_mapcount |
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On Wed, Jul 03, 2013 at 03:21:39PM +0100, Mel Gorman wrote: > @@ -1587,10 +1588,11 @@ int migrate_misplaced_page(struct page *page, int node) > LIST_HEAD(migratepages); > > /* > + * Don't migrate file pages that are mapped in multiple processes > + * with execute permissions as they are probably shared libraries. > */ > + if (page_mapcount(page) != 1 && page_is_file_cache(page) && > + (vma->vm_flags & VM_EXEC)) > goto out;
So we will migrate DSOs that are mapped but once. That's fair enough I suppose.
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