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From: Edward Tomasz Napierala <trasz@FreeBSD.org>
Date: Tue, 16 Dec 2008 16:57:33 +0000 (UTC)
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Subject: cvs commit: src/sys/cam cam_sim.c cam_sim.h cam_xpt.c
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trasz       2008-12-16 16:57:33 UTC

  FreeBSD src repository

  Modified files:
    sys/cam              cam_sim.c cam_sim.h cam_xpt.c 
  Log:
  SVN rev 186185 on 2008-12-16 16:57:33Z by trasz
  
  Add SIM refcounting.  This is slightly different from what DragonFly
  does - in DragonFly, it's cam_sim_release() what actually frees the
  SIM; cam_sim_free does nothing more than calling cam_sim_release().
  Here, we drain in cam_sim_free, waiting for refcount to drop to zero.
  We cannot do the same think DragonFly does, because after cam_sim_free
  returns, client would destroy the sim->mtx, and CAM would trip over
  an initialized mutex.
  
  Reviewed by:    scottl
  Approved by:    rwatson (mentor)
  Sponsored by:   FreeBSD Foundation
  
  Revision  Changes    Path
  1.12      +29 -0     src/sys/cam/cam_sim.c
  1.9       +3 -0      src/sys/cam/cam_sim.h
  1.200     +2 -0      src/sys/cam/cam_xpt.c