K 10
svn:author
V 5
tegge
K 8
svn:date
V 27
2006-06-02T00:26:27.000000Z
K 7
svn:log
V 637
MFC: Close race between vmspace_exitfree() and exit1() and races between
     vmspace_exitfree() and vmspace_free() which could result in the same
     vmspace being freed twice.

     Factor out part of exit1() into new function vmspace_exit().  Attach
     to vmspace0 to allow old vmspace to be freed earlier.

     Add new function, vmspace_acquire_ref(), for obtaining a vmspace
     reference for a vmspace belonging to another process.  Avoid changing
     vmspace refcount from 0 to 1 since that could also lead to the same
     vmspace being freed twice.

     Change vmtotal() and swapout_procs() to use vmspace_acquire_ref().

END