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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Mon, 3 Nov 2008 14:11:06 +0000 (UTC)
To: cvs-src-old@freebsd.org
X-FreeBSD-CVS-Branch: RELENG_7
Subject: cvs commit: src/sys/kern vfs_subr.c
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kib         2008-11-03 14:11:06 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_7)
    sys/kern             vfs_subr.c 
  Log:
  SVN rev 184591 on 2008-11-03 14:11:06Z by kib
  
  In vfs_busy(), lockmgr() cannot legitimately sleep, because code checked
  MNTK_UNMOUNT before, and mnt_mtx is used as interlock. vfs_busy() always
  tries to obtain a shared lock on mnt_lock, the other user is unmount who
  tries to drain it, setting MNTK_UNMOUNT before.
  
  Approved by:    re (kensmith)
  
  Revision   Changes    Path
  1.707.2.8  +1 -1      src/sys/kern/vfs_subr.c