Symbol: ufs_fiotune
usr/src/uts/common/fs/ufs/ufs_vnops.c
1726
error = ufs_fiotune(vp, (struct fiotune *)arg, cr);
usr/src/uts/common/sys/fs/ufs_filio.h
100
extern int ufs_fiotune(struct vnode *, struct fiotune *, struct cred *);