> 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
