- struct list_head *tmp;
- struct ldlm_lock *lock;
- ldlm_mode_t req_mode = req->l_req_mode;
- int compat = 1;
- ENTRY;
-
- lockmode_verify(req_mode);
-
- list_for_each(tmp, queue) {
- lock = list_entry(tmp, struct ldlm_lock, l_res_link);
-
- if (req == lock)
- RETURN(compat);
-
- /* last lock in mode group */
- tmp = &list_entry(lock->l_sl_mode.prev,
- struct ldlm_lock,
- l_sl_mode)->l_res_link;
-
- if (lockmode_compat(lock->l_req_mode, req_mode))
+ enum ldlm_mode req_mode = req->l_req_mode;
+ struct ldlm_lock *lock;
+ struct list_head *tmp;
+ int compat = 1;
+ ENTRY;
+
+ lockmode_verify(req_mode);
+
+ list_for_each_entry(lock, queue, l_res_link) {
+ /* We stop walking the queue if we hit ourselves so we don't
+ * take conflicting locks enqueued after us into account,
+ * or we'd wait forever. */
+ if (req == lock)
+ RETURN(compat);
+
+ /* Advance loop cursor to last lock of mode group. */
+ tmp = &list_entry(lock->l_sl_mode.prev, struct ldlm_lock,
+ l_sl_mode)->l_res_link;
+
+ if (lockmode_compat(lock->l_req_mode, req_mode))