Merge branch 'nfs-for-2.6.36' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6

* 'nfs-for-2.6.36' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: (42 commits)
  NFS: NFSv4.1 is no longer a "developer only" feature
  NFS: NFS_V4 is no longer an EXPERIMENTAL feature
  NFS: Fix /proc/mount for legacy binary interface
  NFS: Fix the locking in nfs4_callback_getattr
  SUNRPC: Defer deleting the security context until gss_do_free_ctx()
  SUNRPC: prevent task_cleanup running on freed xprt
  SUNRPC: Reduce asynchronous RPC task stack usage
  SUNRPC: Move the bound cred to struct rpc_rqst
  SUNRPC: Clean up of rpc_bindcred()
  SUNRPC: Move remaining RPC client related task initialisation into clnt.c
  SUNRPC: Ensure that rpc_exit() always wakes up a sleeping task
  SUNRPC: Make the credential cache hashtable size configurable
  SUNRPC: Store the hashtable size in struct rpc_cred_cache
  NFS: Ensure the AUTH_UNIX credcache is allocated dynamically
  NFS: Fix the NFS users of rpc_restart_call()
  SUNRPC: The function rpc_restart_call() should return success/failure
  NFSv4: Get rid of the bogus RPC_ASSASSINATED(task) checks
  NFSv4: Clean up the process of renewing the NFSv4 lease
  NFSv4.1: Handle NFS4ERR_DELAY on SEQUENCE correctly
  NFS: nfs_rename() should not have to flush out writebacks
  ...

10 files changed, 38 insertions, 31 deletions

diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 9b8299af3741..07e40c625972 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -523,6 +523,7 @@ enum {
         NFSPROC4_CLNT_GETACL,
         NFSPROC4_CLNT_SETACL,
         NFSPROC4_CLNT_FS_LOCATIONS,
+        NFSPROC4_CLNT_RELEASE_LOCKOWNER,
 
         /* nfs41 */
         NFSPROC4_CLNT_EXCHANGE_ID,
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index bad4d121b16e..508f8cf6da37 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -72,13 +72,20 @@ struct nfs_access_entry {
         int                     mask;
 };
 
+struct nfs_lock_context {
+        atomic_t count;
+        struct list_head list;
+        struct nfs_open_context *open_context;
+        fl_owner_t lockowner;
+        pid_t pid;
+};
+
 struct nfs4_state;
 struct nfs_open_context {
-        atomic_t count;
+        struct nfs_lock_context lock_context;
         struct path path;
         struct rpc_cred *cred;
         struct nfs4_state *state;
-        fl_owner_t lockowner;
         fmode_t mode;
 
         unsigned long flags;
@@ -353,6 +360,8 @@ extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr);
 extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx);
 extern void put_nfs_open_context(struct nfs_open_context *ctx);
 extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode);
+extern struct nfs_lock_context *nfs_get_lock_context(struct nfs_open_context *ctx);
+extern void nfs_put_lock_context(struct nfs_lock_context *l_ctx);
 extern u64 nfs_compat_user_ino64(u64 fileid);
 extern void nfs_fattr_init(struct nfs_fattr *fattr);
 
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index d6e10a4c06e5..c82ee7cd6288 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -15,6 +15,7 @@ struct nlm_host;
 struct nfs4_sequence_args;
 struct nfs4_sequence_res;
 struct nfs_server;
+struct nfs4_minor_version_ops;
 
 /*
  * The nfs_client identifies our client state to the server.
@@ -70,11 +71,7 @@ struct nfs_client {
          */
         char                    cl_ipaddr[48];
         unsigned char           cl_id_uniquifier;
-        int                  (* cl_call_sync)(struct nfs_server *server,
-                                              struct rpc_message *msg,
-                                              struct nfs4_sequence_args *args,
-                                              struct nfs4_sequence_res *res,
-                                              int cache_reply);
+        const struct nfs4_minor_version_ops *cl_mvops;
 #endif /* CONFIG_NFS_V4 */
 
 #ifdef CONFIG_NFS_V4_1
diff --git a/include/linux/nfs_mount.h b/include/linux/nfs_mount.h
index 4499016e6d0d..5d59ae861aa6 100644
--- a/include/linux/nfs_mount.h
+++ b/include/linux/nfs_mount.h
@@ -69,5 +69,6 @@ struct nfs_mount_data {
 #define NFS_MOUNT_LOOKUP_CACHE_NONEG    0x10000
 #define NFS_MOUNT_LOOKUP_CACHE_NONE     0x20000
 #define NFS_MOUNT_NORESVPORT            0x40000
+#define NFS_MOUNT_LEGACY_INTERFACE      0x80000
 
 #endif
diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h
index 3c60685d972b..f8b60e7f4c44 100644
--- a/include/linux/nfs_page.h
+++ b/include/linux/nfs_page.h
@@ -39,6 +39,7 @@ struct nfs_page {
         struct list_head        wb_list;        /* Defines state of page: */
         struct page             *wb_page;       /* page to read in/write out */
         struct nfs_open_context *wb_context;    /* File state context info */
+        struct nfs_lock_context *wb_lock_context;       /* lock context info */
         atomic_t                wb_complete;    /* i/os we're waiting for */
         pgoff_t                 wb_index;       /* Offset >> PAGE_CACHE_SHIFT */
         unsigned int            wb_offset,      /* Offset & ~PAGE_CACHE_MASK */
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 51914d7d6cc4..fc461926c412 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -196,8 +196,10 @@ struct nfs_openargs {
         __u64                   clientid;
         __u64                   id;
         union {
-                struct iattr *  attrs;    /* UNCHECKED, GUARDED */
-                nfs4_verifier   verifier; /* EXCLUSIVE */
+                struct {
+                        struct iattr *  attrs;    /* UNCHECKED, GUARDED */
+                        nfs4_verifier   verifier; /* EXCLUSIVE */
+                };
                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
         } u;
@@ -313,6 +315,10 @@ struct nfs_lockt_res {
         struct nfs4_sequence_res        seq_res;
 };
 
+struct nfs_release_lockowner_args {
+        struct nfs_lowner       lock_owner;
+};
+
 struct nfs4_delegreturnargs {
         const struct nfs_fh *fhandle;
         const nfs4_stateid *stateid;
@@ -332,6 +338,7 @@ struct nfs4_delegreturnres {
 struct nfs_readargs {
         struct nfs_fh *         fh;
         struct nfs_open_context *context;
+        struct nfs_lock_context *lock_context;
         __u64                   offset;
         __u32                   count;
         unsigned int            pgbase;
@@ -352,6 +359,7 @@ struct nfs_readres {
 struct nfs_writeargs {
         struct nfs_fh *         fh;
         struct nfs_open_context *context;
+        struct nfs_lock_context *lock_context;
         __u64                   offset;
         __u32                   count;
         enum nfs3_stable_how    stable;
diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
index 87d7ec0bf779..5bbc447175dc 100644
--- a/include/linux/sunrpc/auth.h
+++ b/include/linux/sunrpc/auth.h
@@ -61,13 +61,7 @@ struct rpc_cred {
 /*
  * Client authentication handle
  */
-#define RPC_CREDCACHE_HASHBITS  4
-#define RPC_CREDCACHE_NR        (1 << RPC_CREDCACHE_HASHBITS)
-struct rpc_cred_cache {
-        struct hlist_head       hashtable[RPC_CREDCACHE_NR];
-        spinlock_t              lock;
-};
-
+struct rpc_cred_cache;
 struct rpc_authops;
 struct rpc_auth {
         unsigned int            au_cslack;      /* call cred size estimate */
@@ -112,7 +106,7 @@ struct rpc_credops {
         void                    (*crdestroy)(struct rpc_cred *);
 
         int                     (*crmatch)(struct auth_cred *, struct rpc_cred *, int);
-        void                    (*crbind)(struct rpc_task *, struct rpc_cred *, int);
+        struct rpc_cred *       (*crbind)(struct rpc_task *, struct rpc_cred *, int);
         __be32 *                (*crmarshal)(struct rpc_task *, __be32 *);
         int                     (*crrefresh)(struct rpc_task *);
         __be32 *                (*crvalidate)(struct rpc_task *, __be32 *);
@@ -125,11 +119,12 @@ struct rpc_credops {
 extern const struct rpc_authops authunix_ops;
 extern const struct rpc_authops authnull_ops;
 
-void __init             rpc_init_authunix(void);
-void __init             rpc_init_generic_auth(void);
-void __init             rpcauth_init_module(void);
+int __init              rpc_init_authunix(void);
+int __init              rpc_init_generic_auth(void);
+int __init              rpcauth_init_module(void);
 void __exit             rpcauth_remove_module(void);
 void __exit             rpc_destroy_generic_auth(void);
+void                    rpc_destroy_authunix(void);
 
 struct rpc_cred *       rpc_lookup_cred(void);
 struct rpc_cred *       rpc_lookup_machine_cred(void);
@@ -140,10 +135,8 @@ void			rpcauth_release(struct rpc_auth *);
 struct rpc_cred *       rpcauth_lookup_credcache(struct rpc_auth *, struct auth_cred *, int);
 void                    rpcauth_init_cred(struct rpc_cred *, const struct auth_cred *, struct rpc_auth *, const struct rpc_credops *);
 struct rpc_cred *       rpcauth_lookupcred(struct rpc_auth *, int);
-void                    rpcauth_bindcred(struct rpc_task *, struct rpc_cred *, int);
-void                    rpcauth_generic_bind_cred(struct rpc_task *, struct rpc_cred *, int);
+struct rpc_cred *       rpcauth_generic_bind_cred(struct rpc_task *, struct rpc_cred *, int);
 void                    put_rpccred(struct rpc_cred *);
-void                    rpcauth_unbindcred(struct rpc_task *);
 __be32 *                rpcauth_marshcred(struct rpc_task *, __be32 *);
 __be32 *                rpcauth_checkverf(struct rpc_task *, __be32 *);
 int                     rpcauth_wrap_req(struct rpc_task *task, kxdrproc_t encode, void *rqstp, __be32 *data, void *obj);
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index 8ed9642a5a76..569dc722a600 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -131,6 +131,7 @@ struct rpc_clnt	*rpc_bind_new_program(struct rpc_clnt *,
 struct rpc_clnt *rpc_clone_client(struct rpc_clnt *);
 void            rpc_shutdown_client(struct rpc_clnt *);
 void            rpc_release_client(struct rpc_clnt *);
+void            rpc_task_release_client(struct rpc_task *);
 
 int             rpcb_register(u32, u32, int, unsigned short);
 int             rpcb_v4_register(const u32 program, const u32 version,
@@ -148,8 +149,8 @@ int		rpc_call_sync(struct rpc_clnt *clnt,
                               const struct rpc_message *msg, int flags);
 struct rpc_task *rpc_call_null(struct rpc_clnt *clnt, struct rpc_cred *cred,
                                int flags);
-void            rpc_restart_call_prepare(struct rpc_task *);
-void            rpc_restart_call(struct rpc_task *);
+int             rpc_restart_call_prepare(struct rpc_task *);
+int             rpc_restart_call(struct rpc_task *);
 void            rpc_setbufsize(struct rpc_clnt *, unsigned int, unsigned int);
 size_t          rpc_max_payload(struct rpc_clnt *);
 void            rpc_force_rebind(struct rpc_clnt *);
diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h
index 7be4f3a6d246..88513fd8e208 100644
--- a/include/linux/sunrpc/sched.h
+++ b/include/linux/sunrpc/sched.h
@@ -213,6 +213,7 @@ struct rpc_task *rpc_run_bc_task(struct rpc_rqst *req,
                                 const struct rpc_call_ops *ops);
 void            rpc_put_task(struct rpc_task *);
 void            rpc_exit_task(struct rpc_task *);
+void            rpc_exit(struct rpc_task *, int);
 void            rpc_release_calldata(const struct rpc_call_ops *, void *);
 void            rpc_killall_tasks(struct rpc_clnt *);
 void            rpc_execute(struct rpc_task *);
@@ -241,12 +242,6 @@ void		rpc_destroy_mempool(void);
 extern struct workqueue_struct *rpciod_workqueue;
 void            rpc_prepare_task(struct rpc_task *task);
 
-static inline void rpc_exit(struct rpc_task *task, int status)
-{
-        task->tk_status = status;
-        task->tk_action = rpc_exit_task;
-}
-
 static inline int rpc_wait_for_completion_task(struct rpc_task *task)
 {
         return __rpc_wait_for_completion_task(task, NULL);
diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h
index b51470302399..ff5a77b28c50 100644
--- a/include/linux/sunrpc/xprt.h
+++ b/include/linux/sunrpc/xprt.h
@@ -64,6 +64,7 @@ struct rpc_rqst {
          * This is the private part
          */
         struct rpc_task *       rq_task;        /* RPC task data */
+        struct rpc_cred *       rq_cred;        /* Bound cred */
         __be32                  rq_xid;         /* request XID */
         int                     rq_cong;        /* has incremented xprt->cong */
         u32                     rq_seqno;       /* gss seq no. used on req. */