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From: Rick Macklem <rmacklem@FreeBSD.org>
Date: Sat, 28 Aug 2010 21:41:18 +0000 (UTC)
To: cvs-src-old@freebsd.org
X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/fs/nfs nfs_commonsubs.c nfs_var.h
 src/sys/fs/nfsserver nfs_nfsdsocket.c nfs_nfsdstate.c
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rmacklem    2010-08-28 21:41:18 UTC

  FreeBSD src repository

  Modified files:
    sys/fs/nfs           nfs_commonsubs.c nfs_var.h 
    sys/fs/nfsserver     nfs_nfsdsocket.c nfs_nfsdstate.c 
  Log:
  SVN rev 211951 on 2010-08-28 21:41:18Z by rmacklem
  
  The timer routine in the experimental NFS server did not acquire
  the correct mutex when checking nfsv4root_lock. Although this
  could be fixed by adding mutex lock/unlock calls, zack.kirsch at
  isilon.com suggested a better fix that uses a non-blocking
  acquisition of a reference count on nfsv4root_lock. This fix
  allows the weird NFSLOCKSTATE(); NFSUNLOCKSTATE(); synchronization
  to be deleted. This patch applies this fix.
  
  Tested by:      zack.kirsch at isilon.com
  MFC after:      2 weeks
  
  Revision  Changes    Path
  1.6       +15 -0     src/sys/fs/nfs/nfs_commonsubs.c
  1.15      +1 -0      src/sys/fs/nfs/nfs_var.h
  1.6       +0 -2      src/sys/fs/nfsserver/nfs_nfsdsocket.c
  1.19      +12 -21    src/sys/fs/nfsserver/nfs_nfsdstate.c