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 dc9f4823bbfb..7b47f87926bd 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c
@@ -627,6 +627,10 @@ dbuf_read(dmu_buf_impl_t *db, zio_t *zio, uint32_t flags)
 	} else if (db->db_state == DB_UNCACHED) {
 		spa_t *spa = dn->dn_objset->os_spa;
 
+#ifdef _KERNEL
+		curthread->td_ru.ru_inblock++;
+#endif
+
 		if (zio == NULL)
 			zio = zio_root(spa, NULL, NULL, ZIO_FLAG_CANFAIL);
 		dbuf_read_impl(db, zio, &flags);
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 56e284a6d610..f7d471fa3fc3 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c
@@ -397,9 +397,12 @@ dmu_buf_hold_array_by_dnode(dnode_t *dn, uint64_t offset, uint64_t length,
 			return (EIO);
 		}
 		/* initiate async i/o */
-		if (read) {
+		if (read)
 			(void) dbuf_read(db, zio, dbuf_flags);
-		}
+#ifdef _KERNEL
+		else
+			curthread->td_ru.ru_oublock++;
+#endif
 		dbp[i] = &db->db;
 	}
 	rw_exit(&dn->dn_struct_rwlock);