newbrk            190 mm/mmap.c      	unsigned long newbrk, oldbrk, origbrk;
newbrk            229 mm/mmap.c      	newbrk = PAGE_ALIGN(brk);
newbrk            231 mm/mmap.c      	if (oldbrk == newbrk) {
newbrk            249 mm/mmap.c      		ret = __do_munmap(mm, newbrk, oldbrk-newbrk, &uf, true);
newbrk            261 mm/mmap.c      	if (next && newbrk + PAGE_SIZE > vm_start_gap(next))
newbrk            265 mm/mmap.c      	if (do_brk_flags(oldbrk, newbrk-oldbrk, 0, &uf) < 0)
newbrk            270 mm/mmap.c      	populate = newbrk > oldbrk && (mm->def_flags & VM_LOCKED) != 0;
newbrk            277 mm/mmap.c      		mm_populate(oldbrk, newbrk - oldbrk);