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From: John Dyson <dyson@FreeBSD.ORG>
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	Sat, 31 Jan 1998 03:56:57 -0800 (PST)
Date: Sat, 31 Jan 1998 03:56:57 -0800 (PST)
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To: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG, cvs-sys@FreeBSD.ORG
Subject: cvs commit: src/sys/i386/i386 pmap.c src/sys/kern vfs_bio.c
         vfs_cluster.c src/sys/nfs nfs_serv.c src/sys/vm device_pager.c
         swap_pager.c vm_fault.c vm_kern.c vm_map.c vm_object.c vm_object.h
         vm_page.c vm_pageout.c vnode_pager.c
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dyson       1998/01/31 03:56:57 PST

  Modified files:
    sys/i386/i386        pmap.c 
    sys/kern             vfs_bio.c vfs_cluster.c 
    sys/nfs              nfs_serv.c 
    sys/vm               device_pager.c swap_pager.c vm_fault.c 
                         vm_kern.c vm_map.c vm_object.c 
                         vm_object.h vm_page.c vm_pageout.c 
                         vnode_pager.c 
  Log:
  Change the busy page mgmt, so that when pages are freed, they
  MUST be PG_BUSY.  It is bogus to free a page that isn't busy,
  because it is in a state of being "unavailable" when being
  freed.  The additional advantage is that the page_remove code
  has a better cross-check that the page should be busy and
  unavailable for other use.  There were some minor problems
  with the collapse code, and this plugs those subtile "holes."
  
  Also, the vfs_bio code wasn't checking correctly for PG_BUSY
  pages.  I am going to develop a more consistant scheme for
  grabbing pages, busy or otherwise.  For now, we are stuck
  with the current morass.
  
  Revision  Changes    Path
  1.179     +21 -7     src/sys/i386/i386/pmap.c
  1.147     +22 -4     src/sys/kern/vfs_bio.c
  1.53      +13 -2     src/sys/kern/vfs_cluster.c
  1.55      +6 -1      src/sys/nfs/nfs_serv.c
  1.28      +1 -2      src/sys/vm/device_pager.c
  1.83      +3 -6      src/sys/vm/swap_pager.c
  1.77      +5 -14     src/sys/vm/vm_fault.c
  1.41      +1 -2      src/sys/vm/vm_kern.c
  1.109     +5 -3      src/sys/vm/vm_map.c
  1.109     +56 -25    src/sys/vm/vm_object.c
  1.44      +3 -1      src/sys/vm/vm_object.h
  1.88      +82 -41    src/sys/vm/vm_page.c
  1.110     +7 -7      src/sys/vm/vm_pageout.c
  1.81      +1 -2      src/sys/vm/vnode_pager.c