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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Thu, 8 Jan 2009 12:47:30 +0000 (UTC)
To: cvs-src-old@freebsd.org
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Subject: cvs commit: src/sys/kern vfs_extattr.c
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kib         2009-01-08 12:47:30 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             vfs_extattr.c 
  Log:
  SVN rev 186896 on 2009-01-08 12:47:30Z by kib
  
  Do not call namei() while having another user-controlled vnode
  locked. Lookup could attempt to recursively lock that vnode.
  
  Do not call vn_start_write(V_WAIT) while vnode is locked, this may
  result in a deadlock with suspension.
  
  vfs_busy() the mountpoint before dropping vnode lock for vnode
  that was used to look up the mountpoint, to prevent unmount in
  between.
  
  Reported and tested by: pho
  Reviewed by:    rwatson
  MFC after:      3 weeks
  
  Revision  Changes    Path
  1.436     +31 -18    src/sys/kern/vfs_extattr.c