rounddown2
const vaddr_t sva = rounddown2(va, line_size);
const vaddr_t sva = rounddown2(va, line_size);
const vaddr_t sva = rounddown2(va, line_size);
const paddr_t spa = rounddown2(pa, sc->sc_line_size);
nsc->pg_offset = rounddown2(apbase & (64 * 1024 * 1024 - 1),
mask = (0xfULL << 32) | rounddown2(0xfffff000, size) | 0x800;
q = rounddown2(queue_size, v);
physstart = rounddown2(startoffset, ump->um_dirblksiz);
physend = rounddown2(endoffset, ump->um_dirblksiz);
*vap = rounddown2(*vap, align);
rhi = MIN(rhi, rounddown2(pa, boundary) + boundary);
#define H2FMBASE(key, radix) rounddown2(key, (hammer2_off_t)1 << (radix))