diff options
Diffstat (limited to 'module/zfs/dmu_object.c')
| -rw-r--r-- | module/zfs/dmu_object.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/module/zfs/dmu_object.c b/module/zfs/dmu_object.c index 127a6757f..5faecafc7 100644 --- a/module/zfs/dmu_object.c +++ b/module/zfs/dmu_object.c @@ -20,7 +20,7 @@ */ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2013, 2014 by Delphix. All rights reserved. + * Copyright (c) 2013, 2015 by Delphix. All rights reserved. * Copyright 2014 HybridCluster. All rights reserved. */ @@ -50,6 +50,12 @@ dmu_object_alloc(objset_t *os, dmu_object_type_t ot, int blocksize, * reasonably sparse (at most 1/4 full). Look from the * beginning once, but after that keep looking from here. * If we can't find one, just keep going from here. + * + * Note that dmu_traverse depends on the behavior that we use + * multiple blocks of the dnode object before going back to + * reuse objects. Any change to this algorithm should preserve + * that property or find another solution to the issues + * described in traverse_visitbp. */ if (P2PHASE(object, L2_dnode_count) == 0) { uint64_t offset = restarted ? object << DNODE_SHIFT : 0; |