SWP_TYPE_BITS 105 arch/x86/include/asm/pgtable-2level.h #define MAX_SWAPFILES_CHECK() BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > SWP_TYPE_BITS) SWP_TYPE_BITS 108 arch/x86/include/asm/pgtable-2level.h & ((1U << SWP_TYPE_BITS) - 1)) SWP_TYPE_BITS 156 arch/x86/include/asm/pgtable_64.h #define MAX_SWAPFILES_CHECK() BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > SWP_TYPE_BITS) SWP_TYPE_BITS 159 arch/x86/include/asm/pgtable_64.h & ((1U << SWP_TYPE_BITS) - 1))