xprtrdma: Chain Send to FastReg WRs
authorChuck Lever <chuck.lever@oracle.com>
Wed, 28 Feb 2018 20:30:59 +0000 (15:30 -0500)
committerAnna Schumaker <Anna.Schumaker@Netapp.com>
Tue, 10 Apr 2018 20:06:22 +0000 (16:06 -0400)
commitf2877623082b720c1424b163cf905fff8eed4126
treee7b2bc4f320527e048494ab27a4ba4b6223a31f5
parentfb14ae8853e4f0347950f98e604fa2f4f3b3abe1
xprtrdma: Chain Send to FastReg WRs

With FRWR, the client transport can perform memory registration and
post a Send with just a single ib_post_send.

This reduces contention between the send_request path and the Send
Completion handlers, and reduces the overhead of registering a chunk
that has multiple segments.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
net/sunrpc/xprtrdma/fmr_ops.c
net/sunrpc/xprtrdma/frwr_ops.c
net/sunrpc/xprtrdma/verbs.c
net/sunrpc/xprtrdma/xprt_rdma.h