svcrpc: simpler request dropping

Currently we use -EAGAIN returns to determine when to drop a deferred
request.  On its own, that is error-prone, as it makes us treat -EAGAIN
returns from other functions specially to prevent inadvertent dropping.

So, use a flag on the request instead.

Returning an error on request deferral is still required, to prevent
further processing, but we no longer need worry that an error return on
its own could result in a drop.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 5a3085b9b394..d45c482b6444 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -269,6 +269,7 @@ struct svc_rqst {
         struct cache_req        rq_chandle;     /* handle passed to caches for 
                                                  * request delaying 
                                                  */
+        bool                    rq_dropme;
         /* Catering to nfsd */
         struct auth_domain *    rq_client;      /* RPC peer info */
         struct auth_domain *    rq_gssclient;   /* "gss/"-style peer info */