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mm: convert totalram_pages and totalhigh_pages variables to atomic
totalram_pages and totalhigh_pages are made static inline function. Main motivation was that managed_page_count_lock handling was complicating things. It was discussed in length here, https://lore.kernel.org/patchwork/patch/995739/#1181785 So it seemes better to remove the lock and convert variables to atomic, with preventing poteintial store-to-read tearing as a bonus. [[email protected]: coding style fixes] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arun KS <[email protected]> Suggested-by: Michal Hocko <[email protected]> Suggested-by: Vlastimil Babka <[email protected]> Reviewed-by: Konstantin Khlebnikov <[email protected]> Reviewed-by: Pavel Tatashin <[email protected]> Acked-by: Michal Hocko <[email protected]> Acked-by: Vlastimil Babka <[email protected]> Cc: David Hildenbrand <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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