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SubjectRe: [PATCH v3 1/2] mm/sparse: add sparse_init_nid()
> Ah, yes, I misunderstood it, sorry for that.
>
> Then I have only one concern, for vmemmap case, if one section doesn't
> succeed to populate its memmap, do we need to skip all the remaining
> sections in that node?

Yes, in sparse_populate_node() we have the following:

294 for (pnum = pnum_begin; map_index < map_count; pnum++) {
295 if (!present_section_nr(pnum))
296 continue;
297 if (!sparse_mem_map_populate(pnum, nid, NULL))
298 break;

So, on the first failure, we even stop trying to populate other
sections. No more memory to do so.

Pavel

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