Re: [PATCH v5 4/4] mm/sparse: Optimize memmap allocation during sparse_init()

[Dave Hansen]

On 06/29/2018 10:48 AM, Pavel Tatashin wrote:
> Here is example:
> Node1:
> map_map[0] -> Struct pages ...
> map_map[1] -> NULL
> Node2:
> map_map[2] -> Struct pages ...
> 
> We always want to configure section from Node2 with struct pages from
> Node2. Even, if there are holes in-between. The same with usemap.

Right...  But your example consumes two mem_map[]s.

But, from scanning the code, we increment nr_consumed_maps three times.
Correct?