xprtrdma: Place registered MWs on a per-req list
authorChuck Lever <chuck.lever@oracle.com>
Wed, 29 Jun 2016 17:54:16 +0000 (13:54 -0400)
committerAnna Schumaker <Anna.Schumaker@Netapp.com>
Mon, 11 Jul 2016 19:50:43 +0000 (15:50 -0400)
commit9d6b0409788287b64d8401ffba2ce11a5a86a879
treef89383b033863f6d3ea6b2666a8eb9c50c3927ec
parent2ffc871a574daa760ef4f7750e0a36187a45754a
xprtrdma: Place registered MWs on a per-req list

Instead of placing registered MWs sparsely into the rl_segments
array, place these MWs on a per-req list.

ro_unmap_{sync,safe} can then simply pull those MWs off the list
instead of walking through the array.

This change significantly reduces the size of struct rpcrdma_req
by removing nsegs and rl_mw from every array element.

As an additional clean-up, chunk co-ordinates are returned in the
"*mw" output argument so they are no longer needed in every
array element.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Steve Wise <swise@opengridcomputing.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/rpc_rdma.c
net/sunrpc/xprtrdma/transport.c
net/sunrpc/xprtrdma/verbs.c
net/sunrpc/xprtrdma/xprt_rdma.h