NODES_PGSHIFT
return (mdf.f >> NODES_PGSHIFT) & NODES_MASK;
page->flags.f &= ~(NODES_MASK << NODES_PGSHIFT);
page->flags.f |= (node & NODES_MASK) << NODES_PGSHIFT;
{NODES_WIDTH, NODES_PGSHIFT, NODES_MASK,
{NODES_WIDTH, NODES_PGSHIFT, NODES_MASK,
(unsigned long)NODES_PGSHIFT,
BUG_ON(shift != NODES_PGSHIFT);
(NODES_MASK << NODES_PGSHIFT) |
(NODES_MASK << NODES_PGSHIFT) +