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authorAndy Grover <andy.grover@oracle.com>2010-03-29 17:08:49 -0700
committerAndy Grover <andy.grover@oracle.com>2010-09-08 18:12:21 -0700
commitfcc5450c6386526034edc437e4cb2c67a6fdd7e9 (patch)
tree87b98163a69413de3c14a37220edf22350cb25d9 /README
parentRDS: Move atomic stats from general to ib-specific area (diff)
downloadlinux-dev-fcc5450c6386526034edc437e4cb2c67a6fdd7e9.tar.xz
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RDS: Remove send_quota from send_xmit()
The purpose of the send quota was really to give fairness when different connections were all using the same workq thread to send backlogged msgs -- they could only send so many before another connection could make progress. Now that each connection is pushing the backlog from its completion handler, they are all guaranteed to make progress and the quota isn't needed any longer. A thread *will* have to send all previously queued data, as well as any further msgs placed on the queue while while c_send_lock was held. In a pathological case a single process can get roped into doing this for long periods while other threads get off free. But, since it can only do this until the transport reports full, this is a bounded scenario. Signed-off-by: Andy Grover <andy.grover@oracle.com>
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