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arm, thp: remove infrastructure for handling splitting PMDs
With new refcounting we don't need to mark PMDs splitting. Let's drop code to handle this. pmdp_splitting_flush() is not needed too: on splitting PMD we will do pmdp_clear_flush() + set_pte_at(). pmdp_clear_flush() will do IPI as needed for fast_gup. [[email protected]: fix unterminated ifdef in header file] Signed-off-by: Kirill A. Shutemov <[email protected]> Cc: Sasha Levin <[email protected]> Cc: Aneesh Kumar K.V <[email protected]> Cc: Jerome Marchand <[email protected]> Cc: Vlastimil Babka <[email protected]> Cc: Andrea Arcangeli <[email protected]> Cc: Hugh Dickins <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Mel Gorman <[email protected]> Cc: Rik van Riel <[email protected]> Cc: Vlastimil Babka <[email protected]> Cc: Steve Capper <[email protected]> Cc: Johannes Weiner <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Christoph Lameter <[email protected]> Cc: David Rientjes <[email protected]> Signed-off-by: Arnd Bergmann <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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