Re: [RFC:Patch: 000/008](memory hotplug) rough idea of pgdat removing

[Christoph Lameter]

Mel Gorman wrote:

> Maybe I am missing something, but what is wrong with stop_machine during
> memory hot-remove?

Reclaim can sleep while going down a zonelist. There would need to be some
form of synchronization to avoid removing a zone from the zonelist that we are
just scanning.
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