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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Thu, 13 May 2010 20:26:16 +0000 (UTC)
To: cvs-src-old@freebsd.org
X-FreeBSD-CVS-Branch: RELENG_8
Subject: cvs commit: src/sys/vm swap_pager.c vm_object.c
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kib         2010-05-13 20:26:16 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_8)
    sys/vm               swap_pager.c vm_object.c 
  Log:
  SVN rev 208044 on 2010-05-13 20:26:16Z by kib
  
  MFC elimination of several settings of PG_REFERENCED bit, that either
  do not make sense or are harmful.
  
  MFC r206761 (by alc):
  Setting PG_REFERENCED on the requested page in swap_pager_getpages() is
  either redundant or harmful, depending on the caller.
  
  MFC r206768 (by alc):
  In vm_object_backing_scan(), setting PG_REFERENCED on a page before
  sleeping on that page is nonsensical.
  
  MFC r206770 (by alc):
  In vm_object_madvise() setting PG_REFERENCED on a page before sleeping on
  that page only makes sense if the advice is MADV_WILLNEED.
  
  MFC r206801 (by alc):
  There is no justification for vm_object_split() setting PG_REFERENCED on a
  page that it is going to sleep on.
  
  Revision   Changes    Path
  1.312.2.4  +1 -5      src/sys/vm/swap_pager.c
  1.408.2.3  +9 -6      src/sys/vm/vm_object.c