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From: Alan Cox <alc@FreeBSD.org>
Date: Fri, 17 Apr 2009 16:42:03 +0000 (UTC)
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X-FreeBSD-CVS-Branch: RELENG_7_2
Subject: cvs commit: src/sys/vm vm_page.c
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alc         2009-04-17 16:42:03 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_7_2)
    sys/vm               vm_page.c 
  Log:
  SVN rev 191209 on 2009-04-17 16:42:03Z by alc
  
  MFC r175055
    Defer setting either PG_CACHED or PG_FREE until after the free page
    queues lock is acquired.  Otherwise, the state of a reservation's
    pages' flags and its population count can be inconsistent.  That could
    result in a page being freed twice.
  
  (This change should have been included in the MFC of the superpages
  support.)
  
  Thanks to:      pho for an illuminating crash
  
  Approved by:    re (kib)
  
  Revision       Changes    Path
  1.357.2.8.2.2  +2 -2      src/sys/vm/vm_page.c