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From: Jeff Roberson <jeff@FreeBSD.org>
Date: Wed, 19 Mar 2008 07:13:24 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: HEAD
Cc: 
Subject: cvs commit: src/sys/kern kern_lockf.c
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jeff        2008-03-19 07:13:24 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             kern_lockf.c 
  Log:
   - Fix the last of the threading bugs that were introduced as far back as
     1.38 in 2001.  Break out of the FOREACH_THREAD_IN_PROC loop when we've
     discovered a new proc in the chain.
   - Increment i and check for maxlockdepth once per matching process not
     once per thread.  This didn't properly terminate the loop before.
   - Fix a bug which has existed potentially since rev 1.1.  waitblock->lf_next
     can be NULL when a thread has been woken-up but not yet scheduled.  Check
     for this condition rather than blindly dereferencing.
  
  Found by:       libMicro
  
  Revision  Changes    Path
  1.59      +12 -6     src/sys/kern/kern_lockf.c