Hi Bruce-
> On Aug 22, 2016, at 2:57 PM, Chuck Lever <chuck.lever@xxxxxxxxxx> wrote:
>
> Using NFSv4.1 on RDMA should be safe, so broaden the new checks in
> rpc_create().
>
> WARN_ON_ONCE is used, matching most other WARN call sites in clnt.c.
>
> Fixes: 39a9beab5acb ("rpc: share one xps between all backchannels")
> Fixes: d50039ea5ee6 ("nfsd4/rpc: move backchannel create logic...")
> Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
> ---
Do you want to take this, or should it go through Trond/Anna ?
> net/sunrpc/clnt.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
> index 7f79fb7..66f23b3 100644
> --- a/net/sunrpc/clnt.c
> +++ b/net/sunrpc/clnt.c
> @@ -453,7 +453,7 @@ static struct rpc_clnt *rpc_create_xprt(struct rpc_create_args *args,
> struct rpc_xprt_switch *xps;
>
> if (args->bc_xprt && args->bc_xprt->xpt_bc_xps) {
> - WARN_ON(args->protocol != XPRT_TRANSPORT_BC_TCP);
> + WARN_ON_ONCE(!(args->protocol & XPRT_TRANSPORT_BC));
> xps = args->bc_xprt->xpt_bc_xps;
> xprt_switch_get(xps);
> } else {
> @@ -520,7 +520,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
> char servername[48];
>
> if (args->bc_xprt) {
> - WARN_ON(args->protocol != XPRT_TRANSPORT_BC_TCP);
> + WARN_ON_ONCE(!(args->protocol & XPRT_TRANSPORT_BC));
> xprt = args->bc_xprt->xpt_bc_xprt;
> if (xprt) {
> xprt_get(xprt);
>
> --
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--
Chuck Lever
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