SWP_OFFSET_SHIFT   85 arch/x86/include/asm/pgtable-2level.h #define SWP_OFFSET_SHIFT (_PAGE_BIT_PROTNONE + 1)
SWP_OFFSET_SHIFT  255 arch/x86/include/asm/pgtable-3level.h #define SWP_OFFSET_SHIFT	(SWP_OFFSET_FIRST_BIT + SWP_TYPE_BITS)
SWP_OFFSET_SHIFT  214 arch/x86/include/asm/pgtable_64.h #define SWP_OFFSET_SHIFT	(SWP_OFFSET_FIRST_BIT+SWP_TYPE_BITS)