Re: [External] Re: [PATCH v15 4/8] mm: hugetlb: alloc the vmemmap pages associated with each HugeTLB page

[David Hildenbrand]

> > If current
> > node has no memory and other nodes have enough memory.
> > We can fail to allocate vmemmap pages. But actually it is
> > suitable to allocate vmemmap pages from other nodes.
> > Right?
>
> Falling back to a different node would be very suboptimal because then
> you would have vmemmap back by remote pages. We do not want that.

... and we even warn when this happens right now:

mm/sparse-vmemmap.c:vmemmap_verify()

--
Thanks,

David / dhildenb