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From: Pawel Jakub Dawidek <pjd@FreeBSD.org>
Date: Thu, 26 Jul 2007 16:58:10 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
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Cc: 
Subject: cvs commit: src/sys/fs/devfs devfs_vnops.c src/sys/fs/fifofs
 fifo_vnops.c src/sys/kern uipc_usrreq.c vfs_vnops.c src/sys/vm
 vnode_pager.c
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pjd         2007-07-26 16:58:09 UTC

  FreeBSD src repository

  Modified files:
    sys/fs/devfs         devfs_vnops.c 
    sys/fs/fifofs        fifo_vnops.c 
    sys/kern             uipc_usrreq.c vfs_vnops.c 
    sys/vm               vnode_pager.c 
  Log:
  When we do open, we should lock the vnode exclusively. This fixes few races:
  - fifo race, where two threads assign v_fifoinfo,
  - v_writecount modifications,
  - v_object modifications,
  - and probably more...
  
  Discussed with: kib, ups
  Approved by:    re (rwatson)
  
  Revision  Changes    Path
  1.149     +1 -0      src/sys/fs/devfs/devfs_vnops.c
  1.138     +1 -1      src/sys/fs/fifofs/fifo_vnops.c
  1.206     +1 -1      src/sys/kern/uipc_usrreq.c
  1.252     +2 -2      src/sys/kern/vfs_vnops.c
  1.236     +3 -3      src/sys/vm/vnode_pager.c