diff options
| author | Justin T. Gibbs <[email protected]> | 2015-04-02 14:44:32 +1100 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2015-04-28 16:25:34 -0700 |
| commit | 0c66c32d1d8b64a261cceb5f50a9e86777c5d0b2 (patch) | |
| tree | 82f5630e8a4e77931e9992db3a7fac1964414716 /include/sys/spa_impl.h | |
| parent | d683ddbb7272a179da3918cc4f922d92a2195ba2 (diff) | |
Illumos 5056 - ZFS deadlock on db_mtx and dn_holds
5056 ZFS deadlock on db_mtx and dn_holds
Author: Justin Gibbs <[email protected]>
Reviewed by: Will Andrews <[email protected]>
Reviewed by: Matt Ahrens <[email protected]>
Reviewed by: George Wilson <[email protected]>
Approved by: Dan McDonald <[email protected]>
References:
https://www.illumos.org/issues/5056
https://github.com/illumos/illumos-gate/commit/bc9014e
Porting Notes:
sa_handle_get_from_db():
- the original patch includes an otherwise unmentioned fix for a
possible usage of an uninitialised variable
dmu_objset_open_impl():
- Under Illumos list_link_init() is the same as filling a list_node_t
with NULLs, so they don't notice if they miss doing list_link_init()
on a zero'd containing structure (e.g. allocated with kmem_zalloc as
here). Under Linux, not so much: an uninitialised list_node_t goes
"Boom!" some time later when it's used or destroyed.
dmu_objset_evict_dbufs():
- reduce stack usage using kmem_alloc()
Ported-by: Chris Dunlop <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Diffstat (limited to 'include/sys/spa_impl.h')
| -rw-r--r-- | include/sys/spa_impl.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/sys/spa_impl.h b/include/sys/spa_impl.h index 19ba11537..25f28ef84 100644 --- a/include/sys/spa_impl.h +++ b/include/sys/spa_impl.h @@ -22,6 +22,7 @@ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2011, 2014 by Delphix. All rights reserved. * Copyright 2011 Nexenta Systems, Inc. All rights reserved. + * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. */ #ifndef _SYS_SPA_IMPL_H @@ -144,6 +145,9 @@ struct spa { uint64_t spa_claim_max_txg; /* highest claimed birth txg */ timespec_t spa_loaded_ts; /* 1st successful open time */ objset_t *spa_meta_objset; /* copy of dp->dp_meta_objset */ + kmutex_t spa_evicting_os_lock; /* Evicting objset list lock */ + list_t spa_evicting_os_list; /* Objsets being evicted. */ + kcondvar_t spa_evicting_os_cv; /* Objset Eviction Completion */ txg_list_t spa_vdev_txg_list; /* per-txg dirty vdev list */ vdev_t *spa_root_vdev; /* top-level vdev container */ uint64_t spa_config_guid; /* config pool guid */ |