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H A Dsvc_rdma_rw.cdiff 07d0ff3b0cd23a4ba7078fb5cc3aeb25e38b3557 Fri Jul 27 10:18:59 CDT 2018 Chuck Lever <chuck.lever@oracle.com> svcrdma: Clean up Read chunk path

Simplify the error handling at the tail of recv_read_chunk() by
re-arranging rq_pages[] housekeeping and documenting it properly.

NB: In this path, svc_rdma_recvfrom returns zero. Therefore no
subsequent reply processing is done on the svc_rqstp, and thus the
rq_respages field does not need to be updated.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>