[LU-6500] strange redundant rc checks in ldlm

• Type: Bug
• Resolution: Unresolved
• Priority: Minor
• Labels: easy smatch
• Severity: 3
• Assignee: WC Triage
• Reporter: Oleg Drokin

Description

smatch highlights these two redundant checks in ldlm.

ldlm_lock.c::ldlm_lock_enqueue:

                } else if (rc != ELDLM_OK ||
                           (rc == ELDLM_OK && (*flags & LDLM_FL_INTENT_ONLY))) {
                        ldlm_lock_destroy(lock);
                        return rc;
                }

We probbly can just drop the other 'rc ==' check

ldlm_lib.c::client_connect_import():

        rc = ptlrpc_connect_import(imp);
        if (rc != 0) {
                LASSERT(imp->imp_state == LUSTRE_IMP_DISCON);
                goto out_ldlm;
        }
...
        if (rc) {
out_ldlm:
                cli->cl_conn_count--;
                class_disconnect(*exp);

We probably can drop the latter rc check now?