K 10 svn:author V 3 alc K 8 svn:date V 27 2016-10-19T22:19:38.357952Z K 7 svn:log V 300 Always pause() for a short interval after sending a batch of dirty pages to secondary storage. Previously, another laundering run could start right after sending the batch, which is not what we intended. Use different wait messages when the laundry thread pauses versus sleeps. Reviewed by: markj END