Oliver O'Halloran [off-list ref] writes:

On Wed, Apr 12, 2017 at 11:53 AM, Balbir Singh [off-list ref] wrote:

quoted

The API also does not clear linear_map_hash_slots[] under DEBUG_PAGEALLOC

I'm not sure what API you're referring to here. The tracking for
linear_map_hash_slots[] is agnostic of mmu_hash_ops so we shouldn't be
touching it here. It also looks like DEBUG_PAGEALLOC is a bit broken
with hotplugged memory anyway so I think that's a fix for a different
patch.

It's old and has probably bit-rotted, so I'm happy for it to be fixed up
later if necessary.

cheers