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From: Alan Cox <alc@FreeBSD.org>
Date: Sun, 9 May 2010 16:27:42 +0000 (UTC)
To: cvs-src-old@freebsd.org
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Subject: cvs commit: src/sys/vm swap_pager.c
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alc         2010-05-09 16:27:42 UTC

  FreeBSD src repository

  Modified files:
    sys/vm               swap_pager.c 
  Log:
  SVN rev 207822 on 2010-05-09 16:27:42Z by alc
  
  Call vm_page_deactivate() rather than vm_page_dontneed() in
  swp_pager_force_pagein().  By dirtying the page, swp_pager_force_pagein()
  forces vm_page_dontneed() to insert the page at the head of the inactive
  queue, just like vm_page_deactivate() does.  Moreover, because the page
  was invalid, it can't have been mapped, and thus the other effect of
  vm_page_dontneed(), clearing the page's reference bits has no effect.  In
  summary, there is no reason to call vm_page_dontneed() since its effect
  will be identical to calling the simpler vm_page_deactivate().
  
  Revision  Changes    Path
  1.321     +2 -4      src/sys/vm/swap_pager.c