xprtrdma: mind the device's max fast register page list depth
Some rdma devices don't support a fast register page list depth of at least RPCRDMA_MAX_DATA_SEGS. So xprtrdma needs to chunk its fast register regions according to the minimum of the device max supported depth or RPCRDMA_MAX_DATA_SEGS. Signed-off-by: NSteve Wise <swise@opengridcomputing.com> Reviewed-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
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