BLK_SPLIT_INTERVAL_CAPABLE
(bi->flags & BLK_SPLIT_INTERVAL_CAPABLE);
if (!(bi->flags & BLK_SPLIT_INTERVAL_CAPABLE) && bi->csum_type) {
if ((ti->flags & BLK_SPLIT_INTERVAL_CAPABLE) &&
!(bi->flags & BLK_SPLIT_INTERVAL_CAPABLE))
ti->flags &= ~BLK_SPLIT_INTERVAL_CAPABLE;
int ret_flags = BLK_SPLIT_INTERVAL_CAPABLE;
bi->flags |= BLK_SPLIT_INTERVAL_CAPABLE;