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Gregory Price
c5c4834513
Give the MMOP enum (MMOP_OFFLINE, MMOP_ONLINE, etc) a proper type name so the compiler can help catch invalid values being assigned to variables of this type. Leave the existing functions returning int alone to allow for value-or-error pattern to remain unchanged without churn. mmop_default_online_type is left as int because it uses the -1 sentinal value to signal it hasn't been initialized yet. Keep the uint8_t buffer in offline_and_remove_memory() as-is for space efficiency, with an explicit cast when we consume the value. Move the enum definition before the CONFIG_MEMORY_HOTPLUG guard so it is unconditionally available for struct memory_block in memory.h. No functional change. Link: https://lore.kernel.org/linux-mm/[email protected]/ Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Gregory Price <[email protected]> Suggested-by: Jonathan Cameron <[email protected]> Suggested-by: "David Hildenbrand (arm)" <[email protected]> Reviewed-by: Ben Cheatham <[email protected]> Acked-by: David Hildenbrand (Arm) <[email protected]> Reviewed-by: Dave Jiang <[email protected]> Reviewed-by: Davidlohr Bueso <[email protected]> Reviewed-by: Jonathan Cameron <[email protected]> Cc: Danilo Krummrich <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Liam Howlett <[email protected]> Cc: Lorenzo Stoakes <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Mike Rapoport <[email protected]> Cc: Oscar Salvador <[email protected]> Cc: Suren Baghdasaryan <[email protected]> Cc: Vlastimil Babka <[email protected]> Signed-off-by: Andrew Morton <[email protected]>