drbd: Take a reference on tconn when finding a tconn by name
Rule #3 of kref.txt
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 11427f5..f0a0e17 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2362,7 +2362,7 @@
INIT_LIST_HEAD(&wq->q);
}
-struct drbd_tconn *conn_by_name(const char *name)
+struct drbd_tconn *conn_get_by_name(const char *name)
{
struct drbd_tconn *tconn;
@@ -2371,8 +2371,10 @@
down_read(&drbd_cfg_rwsem);
list_for_each_entry(tconn, &drbd_tconns, all_tconn) {
- if (!strcmp(tconn->name, name))
+ if (!strcmp(tconn->name, name)) {
+ kref_get(&tconn->kref);
goto found;
+ }
}
tconn = NULL;
found:
