maybe_unlock_mmap_for_io
*fpin = maybe_unlock_mmap_for_io(vmf, *fpin);
fpin = maybe_unlock_mmap_for_io(vmf, fpin);
fpin = maybe_unlock_mmap_for_io(vmf, fpin);
fpin = maybe_unlock_mmap_for_io(vmf, fpin);
fpin = maybe_unlock_mmap_for_io(vmf, fpin);
fpin = maybe_unlock_mmap_for_io(vmf, fpin);
fpin = maybe_unlock_mmap_for_io(vmf, NULL);
fpin = maybe_unlock_mmap_for_io(vmf, NULL);