On Mon, Aug 20, 2012 at 4:53 AM, Michel Lespinasse <[email protected]> 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 from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
