NDENTRYMASK
KASSERT((newfdp->fd_lomap[j] & (1U << (i & NDENTRYMASK))) == 0);
newfdp->fd_lomap[j] |= 1U << (i & NDENTRYMASK);
(1U << (j & NDENTRYMASK))) == 0);
1U << (j & NDENTRYMASK);
return (fdp->fd_lomap[off] & (1U << (fd & NDENTRYMASK))) != 0;
i = want & NDENTRYMASK;
KASSERT((fdp->fd_lomap[off] & (1U << (fd & NDENTRYMASK))) == 0);
fdp->fd_lomap[off] |= 1U << (fd & NDENTRYMASK);
(1U << (off & NDENTRYMASK))) == 0);
fdp->fd_himap[off >> NDENTRYSHIFT] |= 1U << (off & NDENTRYMASK);
(1U << (off & NDENTRYMASK))) != 0);
~(1U << (off & NDENTRYMASK));
KASSERT((fdp->fd_lomap[off] & (1U << (fd & NDENTRYMASK))) != 0);
fdp->fd_lomap[off] &= ~(1U << (fd & NDENTRYMASK));
hi > off ? 0 : i & NDENTRYMASK, NDENTRIES);