On Wed, 24 May 2006, Christoph Lameter wrote:
>
> Thats is very subtle. I hope there are no other areas where the child vma
> has to be processed before the parent vma?
I've considered, and very much doubt it; and if there are, they'd
have to be peculiar to anonymous, since they'd already have been
wrong for the vma_prio_tree cases.
> An alternative would be to
> make remove_anon_migration_ptes walk the list in reverse and add a big
> comment.
No, even without this migration issue, I'd much rather have anon_vmas
inserted in the new list_add_tail way, matching the prio_tree direction.
It's asking for trouble to have opposite conventions there (and much
less surprising to insert child after parent than before).
Hugh
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