From owner-cvs-all  Sun Apr 14  6:47:13 2002
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From: Jeff Roberson <jeff@FreeBSD.org>
Date: Sun, 14 Apr 2002 06:47:10 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/vm uma_core.c
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jeff        2002/04/14 06:47:10 PDT

  Modified files:
    sys/vm               uma_core.c 
  Log:
  Fix a witness warning when expanding a hash table.  We were allocating the new
  hash while holding the lock on a zone.  Fix this by doing the allocation
  seperately from the actual hash expansion.
  
  The lock is dropped before the allocation and reacquired before the expansion.
  The expansion code checks to see if we lost the race and frees the new hash
  if we do.  We really never will lose this race because the hash expansion is
  single threaded via the timeout mechanism.
  
  Revision  Changes    Path
  1.14      +79 -38    src/sys/vm/uma_core.c

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