Re: [PATCH 1/1] nfs41 do not allocate unused back channel pages

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On Tue, 2010-01-26 at 12:55 -0500, andros@xxxxxxxxxx wrote: 
> From: Andy Adamson <andros@xxxxxxxxxx>
> 
> Signed-off-by: Andy Adamson <andros@xxxxxxxxxx>
> ---
>  net/sunrpc/svc.c |    4 ++++
>  1 files changed, 4 insertions(+), 0 deletions(-)
> 
> diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
> index 538ca43..984be52 100644
> --- a/net/sunrpc/svc.c
> +++ b/net/sunrpc/svc.c
> @@ -506,6 +506,10 @@ svc_init_buffer(struct svc_rqst *rqstp, unsigned int size)
>  {
>  	unsigned int pages, arghi;
>  
> +	/* bc_xprt uses fore channel allocated buffers */
> +	if (rqstp->rq_server->bc_xprt)
> +		return 1;
> +
>  	pages = size / PAGE_SIZE + 1; /* extra page as we hold both request and reply.
>  				       * We assume one is at most one page
>  				       */

Argh! This one too fails completely to compile ifndef CONFIG_NFS_V4_1

Trond
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