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From: John Baldwin <jhb@FreeBSD.org>
Date: Tue, 25 Jan 2011 19:44:55 +0000 (UTC)
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X-FreeBSD-CVS-Branch: RELENG_7
Subject: cvs commit: src/sys/vm vm_map.c vm_map.h
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jhb         2011-01-25 19:44:55 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_7)
    sys/vm               vm_map.c vm_map.h 
  Log:
  SVN rev 217836 on 2011-01-25 19:44:55Z by jhb
  
  MFC 214144:
  - Make 'vm_refcnt' volatile so that compilers won't be tempted to treat
    its value as a loop invariant.  Currently this is a no-op because
    'atomic_cmpset_int()' clobbers all memory on current architectures.
  - Use atomic_fetchadd_int() instead of an atomic_cmpset_int() loop to drop
    a reference in vmspace_free().
  
  Revision    Changes    Path
  1.388.2.15  +1 -5      src/sys/vm/vm_map.c
  1.120.2.4   +1 -1      src/sys/vm/vm_map.h