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From: Alan Cox <alc@FreeBSD.org>
Date: Wed, 5 May 2004 22:03:24 -0700 (PDT)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
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X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/fs/nwfs nwfs_io.c src/sys/fs/smbfs smbfs_io.c
 src/sys/fs/specfs spec_vnops.c src/sys/kern uipc_syscalls.c
 vfs_bio.c src/sys/nfsclient nfs_bio.c src/sys/vm swap_pager.c
 vm_fault.c vnode_pager.c
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alc         2004/05/05 22:03:24 PDT

  FreeBSD src repository

  Modified files:
    sys/fs/nwfs          nwfs_io.c 
    sys/fs/smbfs         smbfs_io.c 
    sys/fs/specfs        spec_vnops.c 
    sys/kern             uipc_syscalls.c vfs_bio.c 
    sys/nfsclient        nfs_bio.c 
    sys/vm               swap_pager.c vm_fault.c vnode_pager.c 
  Log:
  Make vm_page's PG_ZERO flag immutable between the time of the page's
  allocation and deallocation.  This flag's principal use is shortly after
  allocation.  For such cases, clearing the flag is pointless.  The only
  unusual use of PG_ZERO is in vfs_bio_clrbuf().  However, allocbuf() never
  requests a prezeroed page.  So, vfs_bio_clrbuf() never sees a prezeroed
  page.
  
  Reviewed by:    tegge@
  
  Revision  Changes    Path
  1.34      +0 -2      src/sys/fs/nwfs/nwfs_io.c
  1.27      +0 -2      src/sys/fs/smbfs/smbfs_io.c
  1.222     +0 -2      src/sys/fs/specfs/spec_vnops.c
  1.182     +0 -1      src/sys/kern/uipc_syscalls.c
  1.433     +1 -14     src/sys/kern/vfs_bio.c
  1.131     +0 -2      src/sys/nfsclient/nfs_bio.c
  1.250     +0 -4      src/sys/vm/swap_pager.c
  1.187     +0 -1      src/sys/vm/vm_fault.c
  1.196     +0 -3      src/sys/vm/vnode_pager.c