Add some more details about ref cnts and such.  It looks like the fhent  private structure used by msl_io (to stash the fcmh) is going to have to  be beefed up to allow for storage of the bmaps which that fd has has  interaction.  This will allow us to dictate caching policies on a  per-bmap basis vs. a per file basis.
Add some more details about ref cnts and such.  It looks like the fhent 
private structure used by msl_io (to stash the fcmh) is going to have to 
be beefed up to allow for storage of the bmaps which that fd has has 
interaction.  This will allow us to dictate caching policies on a 
per-bmap basis vs. a per file basis.




git-svn-id: ae92b08b608af1c8cefa3e10d2325ea527204e07@3643 3eda493b-6a19-0410-b2e0-ec8ea4dd8fda

pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable