diff options
| author | Jinshan Xiong <jinshan.xiong@intel.com> | 2016-11-10 12:30:54 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-14 16:02:55 +0100 |
| commit | d7f651ad64c2bbf2df47c3cacfbdae95740253eb (patch) | |
| tree | 87afbeadbb0f74d95a9a918a2a8b7e96d84ecf74 | |
| parent | a80ba5fe758131e456343160dcf12f3af7481d35 (diff) | |
staging: lustre: osc: osc_extent should hold refcount to osc_object
To avoid a race that osc_extent and osc_object destroy happens on the
same time, which causes kernel crash.
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7164
Reviewed-on: http://review.whamcloud.com/16433
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Patrick Farrell <paf@cray.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/lustre/lustre/osc/osc_cache.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/staging/lustre/lustre/osc/osc_cache.c b/drivers/staging/lustre/lustre/osc/osc_cache.c index 560bcaf8087e..786e55024724 100644 --- a/drivers/staging/lustre/lustre/osc/osc_cache.c +++ b/drivers/staging/lustre/lustre/osc/osc_cache.c @@ -360,6 +360,7 @@ static struct osc_extent *osc_extent_alloc(struct osc_object *obj) RB_CLEAR_NODE(&ext->oe_node); ext->oe_obj = obj; + cl_object_get(osc2cl(obj)); atomic_set(&ext->oe_refc, 1); atomic_set(&ext->oe_users, 0); INIT_LIST_HEAD(&ext->oe_link); @@ -398,6 +399,7 @@ static void osc_extent_put(const struct lu_env *env, struct osc_extent *ext) LDLM_LOCK_PUT(ext->oe_dlmlock); ext->oe_dlmlock = NULL; } + cl_object_put(env, osc2cl(ext->oe_obj)); osc_extent_free(ext); } } |