Need to hold the subsys semaphore while accessing the children list.
Signed-off-by: David Teigland <[email protected]>
----
diff -ur a/drivers/dlm/config.c b/drivers/dlm/config.c
--- a/drivers/dlm/config.c 2005-08-22 14:48:26.450499104 +0800
+++ b/drivers/dlm/config.c 2005-08-22 14:49:36.767809248 +0800
@@ -627,12 +627,14 @@
static struct comm *get_comm(int nodeid, struct sockaddr_storage *addr)
{
struct config_item *i;
- struct comm *cm;
+ struct comm *cm = NULL;
int found = 0;
if (!comm_list)
return NULL;
+ down(&clusters_root.subsys.su_sem);
+
list_for_each_entry(i, &comm_list->cg_children, ci_entry) {
cm = to_comm(i);
@@ -649,6 +651,7 @@
break;
}
}
+ up(&clusters_root.subsys.su_sem);
if (found)
config_item_get(i);