taglinefilesource code
from_address792mm/memory.cunsigned long from_address, struct vm_area_struct * from_area,
from_address800mm/memory.cfrom_dir = pgd_offset(from_area->vm_task,from_address);
from_address808mm/memory.cfrom_middle = pmd_offset(from_dir, from_address);
from_address816mm/memory.cfrom_table = pte_offset(from_middle, from_address);
from_address912mm/memory.cunsigned long from_address;
from_address938mm/memory.cfrom_address = offset + mpnt->vm_start - mpnt->vm_offset;
from_address939mm/memory.cif (from_address < mpnt->vm_start || from_address >= mpnt->vm_end)
from_address942mm/memory.cif (!try_to_share(address, area, from_address, mpnt, give_page))