On Mon, Oct 17, 2005 at 08:27:40AM -0700, Linus Torvalds wrote:
>
>
> On Mon, 17 Oct 2005, Andi Kleen wrote:
> >
> > The patch is actually not quite correct - in theory node 0 could be too small
> > to contain the full swiotlb bounce buffers.
>
> Is node 0 guaranteed to be all low-memory? What if it allocates stuff at
> the end of memory on NODE(0)?
>
> Anyway, it sounds like "alloc_bootmem_low_pages()" is seriously buggered
> if it allocates non-low pages, if only because of its name...
>
> > The real fix would be to get rid of the pgdata lists and just walk the
> > node_online_map on bootmem.c. The memory hotplug guys have
> > a patch pending for this.
>
> Argh. Which one should I pick? The NODE(0) one looks simpler, but is it
> sufficient for now in practice (with the real one going into 2.6.14+)?
That's the reason I made a small patch. It does work on the boxes we use.
But I like Yasunori-san's patch. Mine is just a chewing gum fix.
Thanks,
Kiran
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