#define PAGE_MASK (~(PAGE_SIZE - 1))
#define __ALIGN_MASK(v, mask) (((v) + (mask)) & ~(mask))
#define ALIGN(v, align) __ALIGN_MASK(v, (__typeof__(v)) (align) - 1)
#define PAGE_MASK (~(PAGE_SIZE - 1))
#define __ALIGN_MASK(v, mask) (((v) + (mask)) & ~(mask))
#define ALIGN(v, align) __ALIGN_MASK(v, (__typeof__(v)) (align) - 1)