SUNRPC: replace casts in auth_unix.c with container_of()

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/net/sunrpc/auth_unix.c b/net/sunrpc/auth_unix.c
index 2f1bdb5..f17dabb 100644 (file)
--- a/net/sunrpc/auth_unix.c
+++ b/net/sunrpc/auth_unix.c
@@ -89,12 +89,14 @@ unx_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags)
                  cred->uc_gids[i] = NOGROUP;
        }
 
-       return (struct rpc_cred *) cred;
+       return &cred->uc_base;
 }
 
 static void
-unx_destroy_cred(struct rpc_cred *cred)
+unx_destroy_cred(struct rpc_cred *rcred)
 {
+       struct unx_cred *cred = container_of(rcred, struct unx_cred, uc_base);
+
        kfree(cred);
 }
 
@@ -106,7 +108,7 @@ unx_destroy_cred(struct rpc_cred *cred)
 static int
 unx_match(struct auth_cred *acred, struct rpc_cred *rcred, int flags)
 {
-       struct unx_cred *cred = (struct unx_cred *) rcred;
+       struct unx_cred *cred = container_of(rcred, struct unx_cred, uc_base);
        int             i;
 
        if (!(flags & RPCAUTH_LOOKUP_ROOTCREDS)) {
@@ -137,7 +139,7 @@ static __be32 *
 unx_marshal(struct rpc_task *task, __be32 *p)
 {
        struct rpc_clnt *clnt = task->tk_client;
-       struct unx_cred *cred = (struct unx_cred *) task->tk_msg.rpc_cred;
+       struct unx_cred *cred = container_of(task->tk_msg.rpc_cred, struct unx_cred, uc_base);
        __be32          *base, *hold;
        int             i;