dirty pages
         to their backing files.
    </p>
      <p>
         The purpose of the <code class="methodname">DB_ENV-&gt;memp_trickle()</code> function is to enable a
         memory pool manager to ensure that a page is always available for
         reading in new information without having to wait for a write.
    </p>
      <p>
         The <code class="methodname">DB_ENV-&gt;memp_trickle()</code> <span>
            <span>
                  method returns a non-zero error value on failure and 0 on