K 10
svn:author
V 6
emaste
K 8
svn:date
V 27
2009-06-16T13:05:34.067735Z
K 7
svn:log
V 316
MFC part of r166182 and 179670.

  Provide the mutual exclusion between the nfs export list modifications
  and nfs requests processing. Lockmgr lock provides the shared locking for
  nfs requests, while exclusive mode is used for modifications. The writer
  starvation is handled by lockmgr too.

Submitted by: kib

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