title: What is "isra" in the kernel thread dump
body: <p>Linux kernel call stack dump often includes function names that ends with ".isra.NNN" where NNN is some numbers. For example, see <a href="https://bbs.archlinux.org/viewtopic.php?pid=1324638#p1324638" rel="noreferrer">here</a> and <a href="http://xen.1045712.n5.nabble.com/unexpected-Out-Of-Memory-OOM-td5718038.html" rel="noreferrer">here</a>.</p>
  
  <p>What does that mean, what does the number signify?</p>