Re: What to expect with the 2.6 VM

Martin J. Bligh
2003-07-02T17:11:30Z

> the major reason you didn't mention for remap_file_pages is the rmap
> avoidance. There's no rmap backing the remap_file_pages regions, so the
> overhead per task is reduced greatly and the box stops running oom
> (actually deadlocking for mainline thanks to the oom killer and NOFAIL
> default behaviour).

Maybe I'm just taking this out of context, and it's twisting my brain,
but as far as I know, the nonlinear vma's *are* backed by pte_chains.
That was the whole problem with objrmap having to do conversions, etc.

Am I just confused for some reason? I was pretty sure that was right ...

M.