ialloc
extern struct inode *ialloc(struct inode *, umode_t);
ip = ialloc(dir, mode);
ip = ialloc(dip, S_IFDIR | mode);
ip = ialloc(dip, S_IFLNK | 0777);
ip = ialloc(dip, mode);
uint64_t ialloc = 0;
ialloc += pag->pagi_count;
if (fdblocks > sbp->sb_dblocks || ifree > ialloc) {
sbp->sb_icount = ialloc;