Merge branch 'rds-more-fixes'

Santosh Shilimkar says:

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RDS: Few more fixes

As indicated in the earlier series [1], this is a follow-up series which
addresses few issues around the RDS FMR code. With [1] and the subject
series, now I can run many parallel threads with multiple sockets with
N x N traffic. The stress tests has survived overnight runs.

[1] https://lkml.org/lkml/2015/8/22/127


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Signed-off-by: David S. Miller <davem@davemloft.net>