SUNRPC xptrdma: simplify build configuration

Trond and Bruce,

This is a patch for 2.6.25. This is the same version that was sent out
on December 12 for review (no comments to date).

To simplify the RPC/RDMA client and server build configuration, make
SUNRPC_XPRT_RDMA a hidden config option that continues to depend on
SUNRPC and INFINIBAND. The value of SUNRPC_XPRT_RDMA will be:

 - N if either SUNRPC or INFINIBAND are N
 - M if both SUNRPC and INFINIBAND are on (M or Y) and at least one is M
 - Y if both SUNRPC and INFINIBAND are Y

In 2.6.25, all of the RPC/RDMA related files are grouped in
net/sunrpc/xprtrdma and the net/sunrpc/xprtrdma/Makefile builds both
the client and server RPC/RDMA support using this config option.

Signed-off-by: James Lentini <jlentini@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/Kconfig b/fs/Kconfig
index 3bf6ace..d731282 100644 (file)
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -1778,12 +1778,9 @@ config SUNRPC_GSS
        tristate
 
 config SUNRPC_XPRT_RDMA
-       tristate "RDMA transport for sunrpc (EXPERIMENTAL)"
+       tristate
        depends on SUNRPC && INFINIBAND && EXPERIMENTAL
-       default m
-       help
-         Adds a client RPC transport for supporting kernel NFS over RDMA
-         mounts, including Infiniband and iWARP. Experimental.
+       default SUNRPC && INFINIBAND
 
 config SUNRPC_BIND34
        bool "Support for rpcbind versions 3 & 4 (EXPERIMENTAL)"