diff --git a/module/zfs/dsl_dataset.c b/module/zfs/dsl_dataset.c index 21fdd08..872d44a 100644 --- a/module/zfs/dsl_dataset.c +++ b/module/zfs/dsl_dataset.c @@ -20,7 +20,7 @@ */ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2011 by Delphix. All rights reserved. + * Copyright (c) 2012 by Delphix. All rights reserved. * Copyright (c) 2012, Joyent, Inc. All rights reserved. */ @@ -4158,9 +4220,13 @@ struct dsl_ds_releasearg { dsl_dataset_t *snap; uint64_t used, comp, uncomp; - err = dsl_dataset_hold_obj(dp, snapobj, FTAG, &snap); - if (err != 0) - break; + if (snapobj == new->ds_object) { + snap = new; + } else { + err = dsl_dataset_hold_obj(dp, snapobj, FTAG, &snap); + if (err != 0) + break; + } if (snap->ds_phys->ds_prev_snap_txg == oldsnap->ds_phys->ds_creation_txg) { @@ -4189,7 +4255,8 @@ struct dsl_ds_releasearg { * was not a snapshot of/before new. */ snapobj = snap->ds_phys->ds_prev_snap_obj; - dsl_dataset_rele(snap, FTAG); + if (snap != new) + dsl_dataset_rele(snap, FTAG); if (snapobj == 0) { err = EINVAL; break;