svc: Make deferral processing xprt independent

This patch moves the transport independent sk_deferred list to the svc_xprt
structure and updates the svc_deferred_req structure to keep pointers to
svc_xprt's directly. The deferral processing code is also moved out of the
transport dependent recvfrom functions and into the generic svc_recv path.

Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Acked-by: Neil Brown <neilb@suse.de>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Greg Banks <gnb@sgi.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h
index 1b5da39bb461..6a8445b9dfd9 100644
--- a/include/linux/sunrpc/svc_xprt.h
+++ b/include/linux/sunrpc/svc_xprt.h
@@ -59,6 +59,8 @@ struct svc_xprt {
         spinlock_t              xpt_lock;       /* protects sk_deferred
                                                  * and xpt_auth_cache */
         void                    *xpt_auth_cache;/* auth cache */
+        struct list_head        xpt_deferred;   /* deferred requests that need
+                                                 * to be revisted */
 };
 
 int     svc_reg_xprt_class(struct svc_xprt_class *);