Tim Brooks 700357d04e
Immediately flush channel after writing to buffer (#31301)
This is related to #27260. Currently when we queue a write with a
channel we set OP_WRITE and wait until the next selection loop to flush
the write. However, if the channel does not have a pending write, it
is probably ready to flush. This PR implements an optimistic flush logic
that will attempt this flush.
2018-06-13 15:32:13 -06:00
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