idb_assign
idb_assign(ip, ibp->b_data, indiroff, BLK_NOCOPY);
idb_assign(ip, ibp->b_data, indiroff, 0);
idb_assign(ip, ibp->b_data,
static inline void idb_assign(struct inode *, void *, int, daddr_t);
idb_assign(ip, ibp->b_data, loc, 0);
idb_assign(ip, ibp->b_data, loc, 0);
idb_assign(ip, ibp->b_data, indiroff,
idb_assign(ip, ibp->b_data, indiroff, bno);