-static int lovsub_lock_state_one(const struct lu_env *env,
- const struct lovsub_lock *lovsub,
- struct lov_lock *lov)
-{
- struct cl_lock *parent;
- struct cl_lock *child;
- int restart = 0;
-
- ENTRY;
- parent = lov->lls_cl.cls_lock;
- child = lovsub->lss_cl.cls_lock;
-
- if (lovsub->lss_active != parent) {
- lovsub_parent_lock(env, lov);
- if (child->cll_error != 0 && parent->cll_error == 0) {
- /*
- * This is a deadlock case:
- * cl_lock_error(for the parent lock)
- * -> cl_lock_delete
- * -> lov_lock_delete
- * -> cl_lock_enclosure
- * -> cl_lock_mutex_try(for the child lock)
- */
- cl_lock_mutex_put(env, child);
- cl_lock_error(env, parent, child->cll_error);
- restart = 1;
- } else {
- cl_lock_signal(env, parent);
- }
- lovsub_parent_unlock(env, lov);
- }
- RETURN(restart);
-}
-