kernel.h: Remove unused FIELD_SIZEOF()

 */

#define round_down(x, y) ((x) & ~__round_mask(x, y))

/**

 * FIELD_SIZEOF - get the size of a struct's field

 * @t: the target struct

 * @f: the target struct's field

 * Return: the size of @f in the struct definition without having a

 * declared instance of @t.

 */

#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))

#define typeof_member(T, m)	typeof(((T*)0)->m)

#define DIV_ROUND_UP __KERNEL_DIV_ROUND_UP