rcu: Invert sync_rcu_exp_select_cpus() "if" statement

This commit saves a couple lines of code and reduces indentation
by inverting the sense of an "if" statement in the function
sync_rcu_exp_select_cpus().

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index a4a0475aede9ed5dbfd01d026f3a16d3be3257ca..00f07d6436ce4ab7faf1d6136c52b8dfa32bd2d1 100644 (file)
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -3716,24 +3716,22 @@ retry_ipi:
                        ret = smp_call_function_single(cpu, func, rsp, 0);
                        if (!ret) {
                                mask_ofl_ipi &= ~mask;
-                       } else {
-                               /* Failed, raced with offline. */
-                               raw_spin_lock_irqsave_rcu_node(rnp, flags);
-                               if (cpu_online(cpu) &&
-                                   (rnp->expmask & mask)) {
-                                       raw_spin_unlock_irqrestore(&rnp->lock,
-                                                                  flags);
-                                       schedule_timeout_uninterruptible(1);
-                                       if (cpu_online(cpu) &&
-                                           (rnp->expmask & mask))
-                                               goto retry_ipi;
-                                       raw_spin_lock_irqsave_rcu_node(rnp,
-                                                                      flags);
-                               }
-                               if (!(rnp->expmask & mask))
-                                       mask_ofl_ipi &= ~mask;
+                               continue;
+                       }
+                       /* Failed, raced with offline. */
+                       raw_spin_lock_irqsave_rcu_node(rnp, flags);
+                       if (cpu_online(cpu) &&
+                           (rnp->expmask & mask)) {
                                raw_spin_unlock_irqrestore(&rnp->lock, flags);
+                               schedule_timeout_uninterruptible(1);
+                               if (cpu_online(cpu) &&
+                                   (rnp->expmask & mask))
+                                       goto retry_ipi;
+                               raw_spin_lock_irqsave_rcu_node(rnp, flags);
                        }
+                       if (!(rnp->expmask & mask))
+                               mask_ofl_ipi &= ~mask;
+                       raw_spin_unlock_irqrestore(&rnp->lock, flags);
                }
                /* Report quiescent states for those that went offline. */
                mask_ofl_test |= mask_ofl_ipi;