MAX_SWAPFILES_SHIFT  550 fs/proc/task_mmu.c 	return swp_type(e) | (swp_offset(e) << MAX_SWAPFILES_SHIFT);
MAX_SWAPFILES_SHIFT   37 include/linux/swap.h #define MAX_SWAPFILES		(1 << MAX_SWAPFILES_SHIFT)
MAX_SWAPFILES_SHIFT   40 include/linux/swap.h #define MAX_SWAPFILES		((1 << MAX_SWAPFILES_SHIFT)-2)
MAX_SWAPFILES_SHIFT   12 include/linux/swapops.h #define SWP_TYPE_SHIFT(e)	(sizeof(e.val) * 8 - MAX_SWAPFILES_SHIFT)