Symbol: dmu_diff
usr/src/uts/common/fs/zfs/sys/dmu.h
1080
int dmu_diff(const char *tosnap_name, const char *fromsnap_name,
usr/src/uts/common/fs/zfs/zfs_ioctl.c
5895
error = dmu_diff(zc->zc_name, zc->zc_value, fp->f_vnode, &off);