Merge tag 'nfs-for-3.17-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "Highlights include:

   - stable fix for a bug in nfs3_list_one_acl()
   - speed up NFS path walks by supporting LOOKUP_RCU
   - more read/write code cleanups
   - pNFS fixes for layout return on close
   - fixes for the RCU handling in the rpcsec_gss code
   - more NFS/RDMA fixes"

* tag 'nfs-for-3.17-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (79 commits)
  nfs: reject changes to resvport and sharecache during remount
  NFS: Avoid infinite loop when RELEASE_LOCKOWNER getting expired error
  SUNRPC: remove all refcounting of groupinfo from rpcauth_lookupcred
  NFS: fix two problems in lookup_revalidate in RCU-walk
  NFS: allow lockless access to access_cache
  NFS: teach nfs_lookup_verify_inode to handle LOOKUP_RCU
  NFS: teach nfs_neg_need_reval to understand LOOKUP_RCU
  NFS: support RCU_WALK in nfs_permission()
  sunrpc/auth: allow lockless (rcu) lookup of credential cache.
  NFS: prepare for RCU-walk support but pushing tests later in code.
  NFS: nfs4_lookup_revalidate: only evaluate parent if it will be used.
  NFS: add checks for returned value of try_module_get()
  nfs: clear_request_commit while holding i_lock
  pnfs: add pnfs_put_lseg_async
  pnfs: find swapped pages on pnfs commit lists too
  nfs: fix comment and add warn_on for PG_INODE_REF
  nfs: check wait_on_bit_lock err in page_group_lock
  sunrpc: remove "ec" argument from encrypt_v2 operation
  sunrpc: clean up sparse endianness warnings in gss_krb5_wrap.c
  sunrpc: clean up sparse endianness warnings in gss_krb5_seal.c
  ...

4 files changed, 8 insertions, 5 deletions

diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
index 790be1472792..8e030075fe79 100644
--- a/include/linux/sunrpc/auth.h
+++ b/include/linux/sunrpc/auth.h
@@ -103,6 +103,7 @@ struct rpc_auth_create_args {
 
 /* Flags for rpcauth_lookupcred() */
 #define RPCAUTH_LOOKUP_NEW              0x01    /* Accept an uninitialised cred */
+#define RPCAUTH_LOOKUP_RCU              0x02    /* lock-less lookup */
 
 /*
  * Client authentication ops
@@ -140,6 +141,7 @@ struct rpc_credops {
                                                 void *, __be32 *, void *);
         int                     (*crkey_timeout)(struct rpc_cred *);
         bool                    (*crkey_to_expire)(struct rpc_cred *);
+        char *                  (*crstringify_acceptor)(struct rpc_cred *);
 };
 
 extern const struct rpc_authops authunix_ops;
@@ -153,6 +155,7 @@ void			rpc_destroy_generic_auth(void);
 void                    rpc_destroy_authunix(void);
 
 struct rpc_cred *       rpc_lookup_cred(void);
+struct rpc_cred *       rpc_lookup_cred_nonblock(void);
 struct rpc_cred *       rpc_lookup_machine_cred(const char *service_name);
 int                     rpcauth_register(const struct rpc_authops *);
 int                     rpcauth_unregister(const struct rpc_authops *);
@@ -182,6 +185,7 @@ void			rpcauth_clear_credcache(struct rpc_cred_cache *);
 int                     rpcauth_key_timeout_notify(struct rpc_auth *,
                                                 struct rpc_cred *);
 bool                    rpcauth_cred_key_to_expire(struct rpc_cred *);
+char *                  rpcauth_stringify_acceptor(struct rpc_cred *);
 
 static inline
 struct rpc_cred *       get_rpccred(struct rpc_cred *cred)
diff --git a/include/linux/sunrpc/auth_gss.h b/include/linux/sunrpc/auth_gss.h
index f1cfd4c85cd0..36eebc451b41 100644
--- a/include/linux/sunrpc/auth_gss.h
+++ b/include/linux/sunrpc/auth_gss.h
@@ -69,8 +69,9 @@ struct gss_cl_ctx {
         enum rpc_gss_proc       gc_proc;
         u32                     gc_seq;
         spinlock_t              gc_seq_lock;
-        struct gss_ctx __rcu    *gc_gss_ctx;
+        struct gss_ctx          *gc_gss_ctx;
         struct xdr_netobj       gc_wire_ctx;
+        struct xdr_netobj       gc_acceptor;
         u32                     gc_win;
         unsigned long           gc_expiry;
         struct rcu_head         gc_rcu;
diff --git a/include/linux/sunrpc/gss_krb5.h b/include/linux/sunrpc/gss_krb5.h
index 5af2931cf58d..df02a4188487 100644
--- a/include/linux/sunrpc/gss_krb5.h
+++ b/include/linux/sunrpc/gss_krb5.h
@@ -81,7 +81,7 @@ struct gss_krb5_enctype {
                        struct xdr_netobj *in,
                        struct xdr_netobj *out); /* complete key generation */
         u32 (*encrypt_v2) (struct krb5_ctx *kctx, u32 offset,
-                           struct xdr_buf *buf, int ec,
+                           struct xdr_buf *buf,
                            struct page **pages); /* v2 encryption function */
         u32 (*decrypt_v2) (struct krb5_ctx *kctx, u32 offset,
                            struct xdr_buf *buf, u32 *headskip,
@@ -310,7 +310,7 @@ gss_krb5_aes_make_key(const struct gss_krb5_enctype *gk5e,
 
 u32
 gss_krb5_aes_encrypt(struct krb5_ctx *kctx, u32 offset,
-                     struct xdr_buf *buf, int ec,
+                     struct xdr_buf *buf,
                      struct page **pages);
 
 u32
diff --git a/include/linux/sunrpc/xprtrdma.h b/include/linux/sunrpc/xprtrdma.h
index c2f04e1ae159..64a0a0a97b23 100644
--- a/include/linux/sunrpc/xprtrdma.h
+++ b/include/linux/sunrpc/xprtrdma.h
@@ -62,8 +62,6 @@
 #define RPCRDMA_INLINE_PAD_THRESH  (512)/* payload threshold to pad (bytes) */
 
 /* memory registration strategies */
-#define RPCRDMA_PERSISTENT_REGISTRATION (1)
-
 enum rpcrdma_memreg {
         RPCRDMA_BOUNCEBUFFERS = 0,
         RPCRDMA_REGISTER,