Re: [PATCH v1 5/5] svcrdma: Boost NFS READ/WRITE payload size maximum

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On Thu, Jul 09, 2015 at 04:45:47PM -0400, Chuck Lever wrote:
> Increased to 1 megabyte.

Why not more or less?

Why do we even have this constant, why shouldn't we just use
RPCSVC_MAXPAYLOAD?

--b.

> 
> Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
> ---
> 
>  include/linux/sunrpc/svc_rdma.h |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h
> index 13af61b..1bca6dd 100644
> --- a/include/linux/sunrpc/svc_rdma.h
> +++ b/include/linux/sunrpc/svc_rdma.h
> @@ -172,7 +172,7 @@ struct svcxprt_rdma {
>  #define RDMAXPRT_SQ_PENDING	2
>  #define RDMAXPRT_CONN_PENDING	3
>  
> -#define RPCRDMA_MAX_SVC_SEGS	(64)	/* server max scatter/gather */
> +#define RPCRDMA_MAX_SVC_SEGS	(256)	/* server max scatter/gather */
>  #if RPCSVC_MAXPAYLOAD < (RPCRDMA_MAX_SVC_SEGS << PAGE_SHIFT)
>  #define RPCRDMA_MAXPAYLOAD	RPCSVC_MAXPAYLOAD
>  #else
> 
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