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From: Andriy Gapon <avg@FreeBSD.org>
Date: Thu, 26 Feb 2009 18:58:41 +0000 (UTC)
To: cvs-src-old@freebsd.org
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Subject: cvs commit: src/sys/fs/udf udf.h udf_vfsops.c udf_vnops.c
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avg         2009-02-26 18:58:41 UTC

  FreeBSD src repository

  Modified files:
    sys/fs/udf           udf.h udf_vfsops.c udf_vnops.c 
  Log:
  SVN rev 189082 on 2009-02-26 18:58:41Z by avg
  
  udf_readatoffset: read through directory vnode, do not read > MAXBSIZE
  
  Currently bread()-ing through device vnode with
  (1) VMIO enabled,
  (2) bo_bsize != DEV_BSIZE
  (3) more than 1 block
  results in data being incorrectly cached.
  So instead a more common approach of using a vnode belonging to fs is now
  employed.
  Also, prevent attempt to bread more than MAXBSIZE bytes because of
  adjustments made to account for offset that doesn't start on block
  boundary.
  Add expanded comments to explain the calculations.
  Also drop unused inline function while here.
  
  PR: kern/120967
  PR: kern/129084
  
  Reviewed by: scottl, kib
  Approved by: jhb (mentor)
  
  Revision  Changes    Path
  1.16      +1 -16     src/sys/fs/udf/udf.h
  1.61      +2 -2      src/sys/fs/udf/udf_vfsops.c
  1.83      +20 -7     src/sys/fs/udf/udf_vnops.c