<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Hello to all,</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Can you please help me? I confused in the following situation:</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">     CPU0                                   CPU1</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">   -----------                              -----------</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">  rcu_read_lock()                         .</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">         C.S1                                   .</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">  rcu_read_unlock()                     .</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">            .</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">            .            </div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"> rcu_read_lock()              </div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">                                                   Update (C.S1)</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">         C.S2                                  Synchronise_rcu()</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">                                                   free(men_C.S1)</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">  <font color="#ff0000">rcu_read_unlock() </font>                  </div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"> synchronize_rcu() wait till end of C.S2?</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Thank you very much</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">                                                    </div></div>