diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c
index cf983e2..94638c5 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c
@@ -553,6 +553,9 @@ dbuf_read(dmu_buf_impl_t *db, zio_t *zio, uint32_t flags)
 		if ((flags & DB_RF_HAVESTRUCT) == 0)
 			rw_exit(&db->db_dnode->dn_struct_rwlock);
 	} else if (db->db_state == DB_UNCACHED) {
+#ifdef _KERNEL
+		curthread->td_ru.ru_inblock++;
+#endif
 		if (zio == NULL) {
 			zio = zio_root(db->db_dnode->dn_objset->os_spa,
 			    NULL, NULL, ZIO_FLAG_CANFAIL);
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c
index 133343b..7587b3d 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c
@@ -235,6 +235,10 @@ dmu_buf_hold_array_by_dnode(dnode_t *dn, uint64_t offset, uint64_t length,
 			(void) dbuf_read(db, zio, dbuf_flags);
 			rw_enter(&dn->dn_struct_rwlock, RW_READER);
 		}
+#ifdef _KERNEL
+		else
+			curthread->td_ru.ru_oublock++;
+#endif
 		dbp[i] = &db->db;
 	}
 	rw_exit(&dn->dn_struct_rwlock);