From owner-cvs-all  Wed Jul 31 11:46:54 2002
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Message-Id: <200207311846.g6VIkm1M022809@freefall.freebsd.org>
From: Alan Cox <alc@FreeBSD.org>
Date: Wed, 31 Jul 2002 11:46:48 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/i386/i386 pmap.c src/sys/vm vm_glue.c
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alc         2002/07/31 11:46:48 PDT

  Modified files:
    sys/i386/i386        pmap.c 
    sys/vm               vm_glue.c 
  Log:
   o Setting PG_MAPPED and PG_WRITEABLE on pages that are mapped and unmapped
     by pmap_qenter() and pmap_qremove() is pointless.  In fact, it probably
     leads to unnecessary pmap_page_protect() calls if one of these pages is
     paged out after unwiring.
  
  Note: setting PG_MAPPED asserts that the page's pv list may be
  non-empty.  Since checking the status of the page's pv list isn't any
  harder than checking this flag, the flag should probably be eliminated.
  Alternatively, PG_MAPPED could be set by pmap_enter() exclusively
  rather than various places throughout the kernel.
  
  Revision  Changes    Path
  1.350     +0 -2      src/sys/i386/i386/pmap.c
  1.151     +0 -2      src/sys/vm/vm_glue.c

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