taglinefilesource code
from_dir795mm/memory.cpgd_t * from_dir, * to_dir;
from_dir800mm/memory.cfrom_dir = pgd_offset(from_area->vm_task,from_address);
from_dir802mm/memory.cif (pgd_none(*from_dir))
from_dir804mm/memory.cif (pgd_bad(*from_dir)) {
from_dir805mm/memory.cprintk("try_to_share: bad page directory %08lx\n", pgd_val(*from_dir));
from_dir808mm/memory.cfrom_middle = pmd_offset(from_dir, from_address);