xprtrdma: Introduce helpers for allocating MWs
authorChuck Lever <chuck.lever@oracle.com>
Tue, 26 May 2015 15:52:06 +0000 (11:52 -0400)
committerAnna Schumaker <Anna.Schumaker@Netapp.com>
Fri, 12 Jun 2015 17:10:36 +0000 (13:10 -0400)
commit346aa66b2ab7988ca105f7fee5a968c11712b0d8
tree6b8c77c21c658d87f3ca8055d8aabe7ef12c575a
parent89e0d11258e9a69d550fd4bfb4609e955bdd84ee
xprtrdma: Introduce helpers for allocating MWs

We eventually want to handle allocating MWs one at a time, as
needed, instead of grabbing 64 and throwing them at each RPC in the
pipeline.

Add a helper for grabbing an MW off rb_mws, and a helper for
returning an MW to rb_mws. These will be used in a subsequent patch.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Tested-By: Devesh Sharma <devesh.sharma@avagotech.com>
Reviewed-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
net/sunrpc/xprtrdma/verbs.c
net/sunrpc/xprtrdma/xprt_rdma.h