On Mon, Aug 20, 2012 at 4:53 AM, Michel Lespinasse <walken@xxxxxxxxxx> wrote: > I wonder if it might help to add the child VMA onto the parent's > anon_vma only at the first child COW event. That way it would at least > be possible (with userspace changes) for any forking servers to > separate the areas they want to write into from the parent (such as > things that need expensive initialization), from the ones that they > want to write into from the child, and have none of the anon_vma lists > grow too large. Actually that wouldn't work. The parent's anon pages are visible from the child, so the child vma needs to be on the parent anon_vma list. Sorry for the noise :/ -- Michel "Walken" Lespinasse A program is never fully debugged until the last user dies. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>