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From: Rick Macklem <rmacklem@FreeBSD.org>
Date: Fri, 10 Sep 2010 23:49:33 +0000 (UTC)
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Subject: cvs commit: src/sys/fs/nfsserver nfs_nfsdstate.c
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rmacklem    2010-09-10 23:49:33 UTC

  FreeBSD src repository

  Modified files:
    sys/fs/nfsserver     nfs_nfsdstate.c 
  Log:
  SVN rev 212443 on 2010-09-10 23:49:33Z by rmacklem
  
  This patch applies one of the two fixes suggested by
  zack.kirsch at isilon.com for a race between nfsrv_freeopen()
  and nfsrv_getlockfile() in the experimental NFS server that
  he found during testing. Although nfsrv_freeopen() holds a
  sleep lock on the lock file structure when called with
  cansleep != 0, nfsrv_getlockfile() could still search the
  list, once it acquired the NFSLOCKSTATE() mutex. I believe
  that acquiring the mutex in nfsrv_freeopen() fixes the race.
  
  MFC after:      2 weeks
  
  Revision  Changes    Path
  1.21      +6 -1      src/sys/fs/nfsserver/nfs_nfsdstate.c