title: Does Android support Virtual memory
body: <p>Does Android support virtual memory concept? I read it does use paging but not swap space.  That is, it relies heavily on being able to mmap() files and have the kernel page in data from the file as needed (and drop those pages when not needed).  It does not however use swap space for paging out dirty pages. </p>
  
  <p>Can some body please elaborate ?</p>