title: What is the significance of the numbers in the name of the flush processes for newer linux kernels?
body: <p>I am running kernel 2.6.33.7.</p>
  
  <p>Previously, I was running v2.6.18.x. On 2.6.18, the flush processes were named pdflush.</p>
  
  <p>After upgrading to 2.6.33.7, the flush processes have a format of "flush-:".
  For example, currently I see flush process "flush-8:32" popping up in top.</p>
  
  <p>In doing a google search to try to determine an answer to this question, I saw examples of "flush-8:38", "flush-8:64" and "flush-253:0" just to name a few.</p>
  
  <p>I understand what the flush process itself does, my question is what is the significance of the numbers on the end of the process name? What do they represent?</p>
  
  <p>Thanks</p>