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From: Ed Schouten <ed@FreeBSD.org>
Date: Sun, 22 Aug 2010 05:36:06 +0000 (UTC)
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Subject: cvs commit: src/sys/fs/tmpfs tmpfs.h tmpfs_subr.c tmpfs_vnops.c
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ed          2010-08-22 05:36:06 UTC

  FreeBSD src repository

  Modified files:
    sys/fs/tmpfs         tmpfs.h tmpfs_subr.c tmpfs_vnops.c 
  Log:
  SVN rev 211598 on 2010-08-22 05:36:06Z by ed
  
  Add support for whiteouts on tmpfs.
  
  Right now unionfs only allows filesystems to be mounted on top of
  another if it supports whiteouts. Even though I have sent a patch to
  daichi@ to let unionfs work without it, we'd better also add support for
  whiteouts to tmpfs.
  
  This patch implements .vop_whiteout and makes necessary changes to
  lookup() and readdir() to take them into account. We must also make sure
  that when adding or removing a file, we honour the componentname's
  DOWHITEOUT and ISWHITEOUT, to prevent duplicate filenames.
  
  MFC after:      1 month
  
  Revision  Changes    Path
  1.20      +4 -1      src/sys/fs/tmpfs/tmpfs.h
  1.27      +71 -37    src/sys/fs/tmpfs/tmpfs_subr.c
  1.41      +41 -2     src/sys/fs/tmpfs/tmpfs_vnops.c