pjd 04357ca182 Use the topology lock to protect list of providers while withering them.
It is possible that provider is destroyed while we are iterating over the
list.

Reported by:	Brian Parkison <parkison@panzura.com>
Discussed with:	phk
MFC after:	1 week
2012-09-22 12:41:49 +00:00
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2012-08-28 19:28:31 +00:00
2012-08-28 19:28:31 +00:00
2012-08-28 19:28:31 +00:00
2011-07-11 05:22:31 +00:00
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2011-07-11 05:22:31 +00:00
2012-08-28 19:28:31 +00:00