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memory-hotplug.rst: document the "auto-movable" online policy
Commit e83a437 ("mm/memory_hotplug: introduce "auto-movable" online policy") introduced a new memory online policy to automatically select a zone for memory blocks to be onlined. It added a way to set the active online policy and tunables for the auto-movable online policy. Follow-up commits tweaked the "auto-movable" policy to also consider memory device details when selecting zones for memory blocks to be onlined. Let's document the new toggles and how the two online policies we have work. [[email protected]: updates] Link: https://lkml.kernel.org/r/[email protected] Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: David Hildenbrand <[email protected]> Acked-by: Mike Rapoport <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Oscar Salvador <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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