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From: Robert Watson <rwatson@FreeBSD.org>
Date: Sat, 29 Jan 2000 07:23:00 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/kern vfs_subr.c
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rwatson     2000/01/29 07:23:00 PST

  Modified files:
    sys/kern             vfs_subr.c 
  Log:
  This patch fixes a locking bug that can result in deadlock if
  the codepath is followed.
  
  From the PR:
  
    vclean calls vrele leading to deadlock (if usecount > 0)
  
    vclean() calls vrele() if v_usecount of the node was higher than one.
    But before calling it, it sets the VXLOCK flag, which will make
    vn_lock called from vrele dead-lock.
  
  PR:		kern/15117
  Submitted by:	Assar Westerlund <assar@stacken.kth.se>
  Reviewed by:	rwatson
  Obtained from:	NetBSD
  
  Revision  Changes    Path
  1.246     +18 -3     src/sys/kern/vfs_subr.c



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