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authorJoel Becker <joel.becker@oracle.com>2007-02-03 03:14:30 -0800
committerMark Fasheh <mark.fasheh@oracle.com>2007-03-14 14:37:09 -0700
commitc24f72cc7ca829bbad0532ddf315ace3ae1c359e (patch)
treef52e199ba3e426d0713be8d401a1c53336f47b8b /fs/ocfs2
parentc3442e296517aee733d62fc3fe03211598902c7d (diff)
downloadop-kernel-dev-c24f72cc7ca829bbad0532ddf315ace3ae1c359e.zip
op-kernel-dev-c24f72cc7ca829bbad0532ddf315ace3ae1c359e.tar.gz
ocfs2: Proper cleanup in case of error in ocfs2_register_hb_callbacks()
If ocfs2_register_hb_callbacks() succeeds on its first callback but fails its second, it doesn't release the first on the way out. Fix that. While we're at it, o2hb_unregister_callback() never returns anything but 0, so let's make it void. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/ocfs2')
-rw-r--r--fs/ocfs2/cluster/heartbeat.c6
-rw-r--r--fs/ocfs2/cluster/heartbeat.h2
-rw-r--r--fs/ocfs2/cluster/tcp.c13
-rw-r--r--fs/ocfs2/heartbeat.c15
4 files changed, 10 insertions, 26 deletions
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index 5a9779b..0f2cfec 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -1682,7 +1682,7 @@ out:
}
EXPORT_SYMBOL_GPL(o2hb_register_callback);
-int o2hb_unregister_callback(struct o2hb_callback_func *hc)
+void o2hb_unregister_callback(struct o2hb_callback_func *hc)
{
BUG_ON(hc->hc_magic != O2HB_CB_MAGIC);
@@ -1690,15 +1690,13 @@ int o2hb_unregister_callback(struct o2hb_callback_func *hc)
__builtin_return_address(0), hc);
if (list_empty(&hc->hc_item))
- return 0;
+ return;
down_write(&o2hb_callback_sem);
list_del_init(&hc->hc_item);
up_write(&o2hb_callback_sem);
-
- return 0;
}
EXPORT_SYMBOL_GPL(o2hb_unregister_callback);
diff --git a/fs/ocfs2/cluster/heartbeat.h b/fs/ocfs2/cluster/heartbeat.h
index cac6223..cc6d40b 100644
--- a/fs/ocfs2/cluster/heartbeat.h
+++ b/fs/ocfs2/cluster/heartbeat.h
@@ -70,7 +70,7 @@ void o2hb_setup_callback(struct o2hb_callback_func *hc,
void *data,
int priority);
int o2hb_register_callback(struct o2hb_callback_func *hc);
-int o2hb_unregister_callback(struct o2hb_callback_func *hc);
+void o2hb_unregister_callback(struct o2hb_callback_func *hc);
void o2hb_fill_node_map(unsigned long *map,
unsigned bytes);
void o2hb_init(void);
diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index 1718215..69caf3e 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -1638,17 +1638,8 @@ static void o2net_hb_node_up_cb(struct o2nm_node *node, int node_num,
void o2net_unregister_hb_callbacks(void)
{
- int ret;
-
- ret = o2hb_unregister_callback(&o2net_hb_up);
- if (ret < 0)
- mlog(ML_ERROR, "Status return %d unregistering heartbeat up "
- "callback!\n", ret);
-
- ret = o2hb_unregister_callback(&o2net_hb_down);
- if (ret < 0)
- mlog(ML_ERROR, "Status return %d unregistering heartbeat down "
- "callback!\n", ret);
+ o2hb_unregister_callback(&o2net_hb_up);
+ o2hb_unregister_callback(&o2net_hb_down);
}
int o2net_register_hb_callbacks(void)
diff --git a/fs/ocfs2/heartbeat.c b/fs/ocfs2/heartbeat.c
index 8fc52d6..b25ef63 100644
--- a/fs/ocfs2/heartbeat.c
+++ b/fs/ocfs2/heartbeat.c
@@ -164,8 +164,10 @@ int ocfs2_register_hb_callbacks(struct ocfs2_super *osb)
}
status = o2hb_register_callback(&osb->osb_hb_up);
- if (status < 0)
+ if (status < 0) {
mlog_errno(status);
+ o2hb_unregister_callback(&osb->osb_hb_down);
+ }
bail:
return status;
@@ -173,18 +175,11 @@ bail:
void ocfs2_clear_hb_callbacks(struct ocfs2_super *osb)
{
- int status;
-
if (ocfs2_mount_local(osb))
return;
- status = o2hb_unregister_callback(&osb->osb_hb_down);
- if (status < 0)
- mlog_errno(status);
-
- status = o2hb_unregister_callback(&osb->osb_hb_up);
- if (status < 0)
- mlog_errno(status);
+ o2hb_unregister_callback(&osb->osb_hb_down);
+ o2hb_unregister_callback(&osb->osb_hb_up);
}
void ocfs2_stop_heartbeat(struct ocfs2_super *osb)
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