[pnfs] [PATCH 01/10] nfs41: Setup the backchannel

Benny Halevy bhalevy at panasas.com
Fri Feb 1 07:37:18 EST 2008


Ricardo, this patch doesn't apply cleanly after the rlabiaga-bc patchset
the sync lines seem to be "stale".

Benny
On Jan 31, 2008 1:56 PM, Ricardo Labiaga <ricardo.labiaga at netapp.com> wrote:

> The NFS v4.1 callback service has already been setup, and
> rpc_xprt->serv points to the svc_serv structure describing it.
> Invoke the xprt_setup_backchannel() initialization to pre-
> allocate the necessary backchannel structures.
>
> Signed-off-by: Ricardo Labiaga <ricardo.labiaga at netapp.com>
> ---
>  fs/nfs/client.c |    8 +++++++-
>  1 files changed, 7 insertions(+), 1 deletions(-)
>
> diff --git a/fs/nfs/client.c b/fs/nfs/client.c
> index 1993f2b..c2ab890 100644
> --- a/fs/nfs/client.c
> +++ b/fs/nfs/client.c
> @@ -37,6 +37,7 @@
>  #include <linux/nfs_xdr.h>
>  #if defined(CONFIG_NFS_V4_1)
>  #include <linux/nfs41_session_recovery.h>
> +#include <linux/sunrpc/bc_xprt.h>
>  #endif /* CONFIG_NFS_V4_1 */
>
>  #include <asm/system.h>
> @@ -986,7 +987,7 @@ static int nfs4_init_server(struct nfs_server *server,
>
>  #if defined(CONFIG_NFS_V4_1)
>  /*
> - * Allocate and initialize a session if required
> + * Allocate and initialize a session if required, including its
> backchannel.
>  */
>  int nfs4_init_session(struct nfs_client *clp, struct nfs4_session **spp,
>                      struct rpc_clnt *clnt)
> @@ -1008,6 +1009,11 @@ int nfs4_init_session(struct nfs_client *clp,
> struct nfs4_session **spp,
>                        session->clnt = clnt;
>                        rpc_init_wait_queue(&session->recovery_waitq,
>                                "Session recovery wait queue");
> +
> +                       error = xprt_setup_backchannel(clnt->cl_xprt,
> +                                       NFS41_BC_MIN_CALLBACKS);
> +                       if (error < 0)
> +                               nfs4_put_session(&session);
>                }
>                *spp = session;
>                break;
> --
> 1.5.3.3
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