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 /config/kernel-evict-inode.m4 | |
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 'config/kernel-evict-inode.m4')
0 files changed, 0 insertions, 0 deletions