From owner-cvs-all  Wed Apr 25  1:11:24 2001
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From: Kirk McKusick <mckusick@FreeBSD.org>
Date: Wed, 25 Apr 2001 01:11:19 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/kern vfs_vnops.c src/sys/ufs/ffs
         ffs_snapshot.c ffs_vfsops.c src/sys/ufs/ufs ufs_vnops.c
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mckusick    2001/04/25 01:11:19 PDT

  Modified files:
    sys/kern             vfs_vnops.c 
    sys/ufs/ffs          ffs_snapshot.c ffs_vfsops.c 
    sys/ufs/ufs          ufs_vnops.c 
  Log:
  When closing the last reference to an unlinked file, it is freed
  by the inactive routine. Because the freeing causes the filesystem
  to be modified, the close must be held up during periods when the
  filesystem is suspended.
  
  For snapshots to be consistent across crashes, they must write
  blocks that they copy and claim those written blocks in their
  on-disk block pointers before the old blocks that they referenced
  can be allowed to be written.
  
  Close a loophole that allowed unwritten blocks to be skipped when
  doing ffs_sync with a request to wait for all I/O activity to be
  completed.
  
  Revision  Changes    Path
  1.115     +10 -1     src/sys/kern/vfs_vnops.c
  1.15      +67 -18    src/sys/ufs/ffs/ffs_snapshot.c
  1.150     +16 -7     src/sys/ufs/ffs/ffs_vfsops.c
  1.163     +24 -4     src/sys/ufs/ufs/ufs_vnops.c


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