Lines Matching defs:old_len
584 unsigned long old_addr, unsigned long old_len,
589 long to_account = new_len - old_len;
615 if (!err && vma->vm_end != old_addr + old_len)
616 err = vma->vm_ops->may_split(vma, old_addr + old_len);
628 err = ksm_madvise(vma, old_addr, old_addr + old_len,
648 moved_len = move_page_tables(vma, old_addr, new_vma, new_addr, old_len,
650 if (moved_len < old_len) {
665 old_len = new_len;
681 if (vma->vm_end > old_addr + old_len)
687 * since do_munmap() will decrement it by old_len == new_len.
710 vma->vm_end == (old_addr + old_len))
718 if (do_vmi_munmap(&vmi, mm, old_addr, old_len, uf_unmap, false) < 0) {
721 vm_acct_memory(old_len >> PAGE_SHIFT);
747 unsigned long old_len, unsigned long new_len, unsigned long flags)
758 * !old_len is a special case where an attempt is made to 'duplicate'
765 if (!old_len && !(vma->vm_flags & (VM_SHARED | VM_MAYSHARE))) {
775 if (old_len > vma->vm_end - addr)
778 if (new_len == old_len)
790 if (!mlock_future_ok(mm, vma->vm_flags, new_len - old_len))
794 (new_len - old_len) >> PAGE_SHIFT))
800 static unsigned long mremap_to(unsigned long addr, unsigned long old_len,
818 if (addr + old_len > new_addr && new_addr + new_len > addr)
844 if (old_len > new_len) {
845 ret = do_munmap(mm, addr+new_len, old_len - new_len, uf_unmap);
848 old_len = new_len;
851 vma = vma_to_resize(addr, old_len, new_len, flags);
857 /* MREMAP_DONTUNMAP expands by old_len since old_len == new_len */
859 !may_expand_vm(mm, vma->vm_flags, old_len >> PAGE_SHIFT)) {
880 ret = move_vma(vma, addr, old_len, new_len, new_addr, locked, flags, uf,
908 SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
944 (!(flags & MREMAP_MAYMOVE) || old_len != new_len))
951 old_len = PAGE_ALIGN(old_len);
973 old_len = ALIGN(old_len, huge_page_size(h));
986 if (new_len > old_len)
991 ret = mremap_to(addr, old_len, new_addr, new_len,
1003 if (old_len >= new_len) {
1006 if (old_len == new_len) {
1011 ret = do_vmi_munmap(&vmi, mm, addr + new_len, old_len - new_len,
1023 vma = vma_to_resize(addr, old_len, new_len, flags);
1029 /* old_len exactly to the end of the area..
1031 if (old_len == vma->vm_end - addr) {
1033 if (vma_expandable(vma, new_len - old_len)) {
1034 long pages = (new_len - old_len) >> PAGE_SHIFT;
1035 unsigned long extension_start = addr + old_len;
1096 ret = move_vma(vma, addr, old_len, new_len, new_addr,
1103 if (locked && new_len > old_len)
1104 mm_populate(new_addr + old_len, new_len - old_len);
1107 mremap_userfaultfd_complete(&uf, addr, ret, old_len);