Merge git://git.linux-nfs.org/projects/trondmy/nfs-2.6

* git://git.linux-nfs.org/projects/trondmy/nfs-2.6: (80 commits)
  SUNRPC: Invalidate the RPCSEC_GSS session if the server dropped the request
  make nfs_automount_list static
  NFS: remove duplicate flags assignment from nfs_validate_mount_data
  NFS - fix potential NULL pointer dereference v2
  SUNRPC: Don't change the RPCSEC_GSS context on a credential that is in use
  SUNRPC: Fix a race in gss_refresh_upcall()
  SUNRPC: Don't disconnect more than once if retransmitting NFSv4 requests
  SUNRPC: Remove the unused export of xprt_force_disconnect
  SUNRPC: remove XS_SENDMSG_RETRY
  SUNRPC: Protect creds against early garbage collection
  NFSv4: Attempt to use machine credentials in SETCLIENTID calls
  NFSv4: Reintroduce machine creds
  NFSv4: Don't use cred->cr_ops->cr_name in nfs4_proc_setclientid()
  nfs: fix printout of multiword bitfields
  nfs: return negative error value from nfs{,4}_stat_to_errno
  NLM/lockd: Ensure client locking calls use correct credentials
  NFS: Remove the buggy lock-if-signalled case from do_setlk()
  NLM/lockd: Fix a race when cancelling a blocking lock
  NLM/lockd: Ensure that nlmclnt_cancel() returns results of the CANCEL call
  NLM: Remove the signal masking in nlmclnt_proc/nlmclnt_cancel
  ...

5 files changed, 41 insertions, 37 deletions

diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
index 7a69ca3bebaf..3f632182d8eb 100644
--- a/include/linux/sunrpc/auth.h
+++ b/include/linux/sunrpc/auth.h
@@ -26,6 +26,7 @@ struct auth_cred {
         uid_t   uid;
         gid_t   gid;
         struct group_info *group_info;
+        unsigned char machine_cred : 1;
 };
 
 /*
@@ -59,8 +60,8 @@ struct rpc_cred {
 /*
  * Client authentication handle
  */
-#define RPC_CREDCACHE_NR        8
-#define RPC_CREDCACHE_MASK      (RPC_CREDCACHE_NR - 1)
+#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;
@@ -89,7 +90,6 @@ struct rpc_auth {
 
 /* Flags for rpcauth_lookupcred() */
 #define RPCAUTH_LOOKUP_NEW              0x01    /* Accept an uninitialised cred */
-#define RPCAUTH_LOOKUP_ROOTCREDS        0x02    /* This really ought to go! */
 
 /*
  * Client authentication ops
@@ -97,9 +97,7 @@ struct rpc_auth {
 struct rpc_authops {
         struct module           *owner;
         rpc_authflavor_t        au_flavor;      /* flavor (RPC_AUTH_*) */
-#ifdef RPC_DEBUG
         char *                  au_name;
-#endif
         struct rpc_auth *       (*create)(struct rpc_clnt *, rpc_authflavor_t);
         void                    (*destroy)(struct rpc_auth *);
 
@@ -113,6 +111,7 @@ 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 *);
         __be32 *                (*crmarshal)(struct rpc_task *, __be32 *);
         int                     (*crrefresh)(struct rpc_task *);
         __be32 *                (*crvalidate)(struct rpc_task *, __be32 *);
@@ -126,9 +125,13 @@ 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);
 void __exit             rpcauth_remove_module(void);
+void __exit             rpc_destroy_generic_auth(void);
 
+struct rpc_cred *       rpc_lookup_cred(void);
+struct rpc_cred *       rpc_lookup_machine_cred(void);
 int                     rpcauth_register(const struct rpc_authops *);
 int                     rpcauth_unregister(const struct rpc_authops *);
 struct rpc_auth *       rpcauth_create(rpc_authflavor_t, struct rpc_clnt *);
@@ -136,8 +139,8 @@ 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);
-struct rpc_cred *       rpcauth_bindcred(struct rpc_task *);
-void                    rpcauth_holdcred(struct rpc_task *);
+void                    rpcauth_bindcred(struct rpc_task *, struct rpc_cred *, int);
+void                    rpcauth_generic_bind_cred(struct rpc_task *, struct rpc_cred *);
 void                    put_rpccred(struct rpc_cred *);
 void                    rpcauth_unbindcred(struct rpc_task *);
 __be32 *                rpcauth_marshcred(struct rpc_task *, __be32 *);
diff --git a/include/linux/sunrpc/auth_gss.h b/include/linux/sunrpc/auth_gss.h
index 67658e17a375..fec6899bf355 100644
--- a/include/linux/sunrpc/auth_gss.h
+++ b/include/linux/sunrpc/auth_gss.h
@@ -84,6 +84,7 @@ struct gss_cred {
         enum rpc_gss_svc        gc_service;
         struct gss_cl_ctx       *gc_ctx;
         struct gss_upcall_msg   *gc_upcall;
+        unsigned char           gc_machine_cred : 1;
 };
 
 #endif /* __KERNEL__ */
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index 129a86e25d29..6fff7f82ef12 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -127,11 +127,12 @@ int		rpcb_getport_sync(struct sockaddr_in *, u32, u32, int);
 void            rpcb_getport_async(struct rpc_task *);
 
 void            rpc_call_start(struct rpc_task *);
-int             rpc_call_async(struct rpc_clnt *clnt, struct rpc_message *msg,
-                               int flags, const struct rpc_call_ops *tk_ops,
+int             rpc_call_async(struct rpc_clnt *clnt,
+                               const struct rpc_message *msg, int flags,
+                               const struct rpc_call_ops *tk_ops,
                                void *calldata);
-int             rpc_call_sync(struct rpc_clnt *clnt, struct rpc_message *msg,
-                              int flags);
+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(struct rpc_task *);
diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h
index f689f02e6793..d1a5c8c1a0f1 100644
--- a/include/linux/sunrpc/sched.h
+++ b/include/linux/sunrpc/sched.h
@@ -11,7 +11,6 @@
 
 #include <linux/timer.h>
 #include <linux/sunrpc/types.h>
-#include <linux/rcupdate.h>
 #include <linux/spinlock.h>
 #include <linux/wait.h>
 #include <linux/workqueue.h>
@@ -33,7 +32,8 @@ struct rpc_wait_queue;
 struct rpc_wait {
         struct list_head        list;           /* wait queue links */
         struct list_head        links;          /* Links to related tasks */
-        struct rpc_wait_queue * rpc_waitq;      /* RPC wait queue we're on */
+        struct list_head        timer_list;     /* Timer list */
+        unsigned long           expires;
 };
 
 /*
@@ -57,33 +57,25 @@ struct rpc_task {
         __u8                    tk_cred_retry;
 
         /*
-         * timeout_fn   to be executed by timer bottom half
          * callback     to be executed after waking up
          * action       next procedure for async tasks
          * tk_ops       caller callbacks
          */
-        void                    (*tk_timeout_fn)(struct rpc_task *);
         void                    (*tk_callback)(struct rpc_task *);
         void                    (*tk_action)(struct rpc_task *);
         const struct rpc_call_ops *tk_ops;
         void *                  tk_calldata;
 
-        /*
-         * tk_timer is used for async processing by the RPC scheduling
-         * primitives. You should not access this directly unless
-         * you have a pathological interest in kernel oopses.
-         */
-        struct timer_list       tk_timer;       /* kernel timer */
         unsigned long           tk_timeout;     /* timeout for rpc_sleep() */
         unsigned short          tk_flags;       /* misc flags */
         unsigned long           tk_runstate;    /* Task run status */
         struct workqueue_struct *tk_workqueue;  /* Normally rpciod, but could
                                                  * be any workqueue
                                                  */
+        struct rpc_wait_queue   *tk_waitqueue;  /* RPC wait queue we're on */
         union {
                 struct work_struct      tk_work;        /* Async task work queue */
                 struct rpc_wait         tk_wait;        /* RPC wait */
-                struct rcu_head         tk_rcu;         /* for task deletion */
         } u;
 
         unsigned short          tk_timeouts;    /* maj timeouts */
@@ -123,6 +115,7 @@ struct rpc_task_setup {
         const struct rpc_message *rpc_message;
         const struct rpc_call_ops *callback_ops;
         void *callback_data;
+        struct workqueue_struct *workqueue;
         unsigned short flags;
         signed char priority;
 };
@@ -147,9 +140,7 @@ struct rpc_task_setup {
 
 #define RPC_TASK_RUNNING        0
 #define RPC_TASK_QUEUED         1
-#define RPC_TASK_WAKEUP         2
-#define RPC_TASK_HAS_TIMER      3
-#define RPC_TASK_ACTIVE         4
+#define RPC_TASK_ACTIVE         2
 
 #define RPC_IS_RUNNING(t)       test_bit(RPC_TASK_RUNNING, &(t)->tk_runstate)
 #define rpc_set_running(t)      set_bit(RPC_TASK_RUNNING, &(t)->tk_runstate)
@@ -171,15 +162,6 @@ struct rpc_task_setup {
                 smp_mb__after_clear_bit(); \
         } while (0)
 
-#define rpc_start_wakeup(t) \
-        (test_and_set_bit(RPC_TASK_WAKEUP, &(t)->tk_runstate) == 0)
-#define rpc_finish_wakeup(t) \
-        do { \
-                smp_mb__before_clear_bit(); \
-                clear_bit(RPC_TASK_WAKEUP, &(t)->tk_runstate); \
-                smp_mb__after_clear_bit(); \
-        } while (0)
-
 #define RPC_IS_ACTIVATED(t)     test_bit(RPC_TASK_ACTIVE, &(t)->tk_runstate)
 
 /*
@@ -192,6 +174,12 @@ struct rpc_task_setup {
 #define RPC_PRIORITY_HIGH       (1)
 #define RPC_NR_PRIORITY         (1 + RPC_PRIORITY_HIGH - RPC_PRIORITY_LOW)
 
+struct rpc_timer {
+        struct timer_list timer;
+        struct list_head list;
+        unsigned long expires;
+};
+
 /*
  * RPC synchronization objects
  */
@@ -204,6 +192,7 @@ struct rpc_wait_queue {
         unsigned char           count;                  /* # task groups remaining serviced so far */
         unsigned char           nr;                     /* # tasks remaining for cookie */
         unsigned short          qlen;                   /* total # tasks waiting in queue */
+        struct rpc_timer        timer_list;
 #ifdef RPC_DEBUG
         const char *            name;
 #endif
@@ -229,9 +218,11 @@ void		rpc_killall_tasks(struct rpc_clnt *);
 void            rpc_execute(struct rpc_task *);
 void            rpc_init_priority_wait_queue(struct rpc_wait_queue *, const char *);
 void            rpc_init_wait_queue(struct rpc_wait_queue *, const char *);
+void            rpc_destroy_wait_queue(struct rpc_wait_queue *);
 void            rpc_sleep_on(struct rpc_wait_queue *, struct rpc_task *,
-                                        rpc_action action, rpc_action timer);
-void            rpc_wake_up_task(struct rpc_task *);
+                                        rpc_action action);
+void            rpc_wake_up_queued_task(struct rpc_wait_queue *,
+                                        struct rpc_task *);
 void            rpc_wake_up(struct rpc_wait_queue *);
 struct rpc_task *rpc_wake_up_next(struct rpc_wait_queue *);
 void            rpc_wake_up_status(struct rpc_wait_queue *, int);
diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h
index b3ff9a815e6f..4d80a118d538 100644
--- a/include/linux/sunrpc/xprt.h
+++ b/include/linux/sunrpc/xprt.h
@@ -86,6 +86,10 @@ struct rpc_rqst {
         unsigned long           rq_majortimeo;  /* major timeout alarm */
         unsigned long           rq_timeout;     /* Current timeout value */
         unsigned int            rq_retries;     /* # of retries */
+        unsigned int            rq_connect_cookie;
+                                                /* A cookie used to track the
+                                                   state of the transport
+                                                   connection */
         
         /*
          * Partial send handling
@@ -152,6 +156,9 @@ struct rpc_xprt {
         unsigned long           connect_timeout,
                                 bind_timeout,
                                 reestablish_timeout;
+        unsigned int            connect_cookie; /* A cookie that gets bumped
+                                                   every time the transport
+                                                   is reconnected */
 
         /*
          * Disconnection of idle transports
@@ -232,7 +239,7 @@ int			xprt_unregister_transport(struct xprt_class *type);
 void                    xprt_set_retrans_timeout_def(struct rpc_task *task);
 void                    xprt_set_retrans_timeout_rtt(struct rpc_task *task);
 void                    xprt_wake_pending_tasks(struct rpc_xprt *xprt, int status);
-void                    xprt_wait_for_buffer_space(struct rpc_task *task);
+void                    xprt_wait_for_buffer_space(struct rpc_task *task, rpc_action action);
 void                    xprt_write_space(struct rpc_xprt *xprt);
 void                    xprt_update_rtt(struct rpc_task *task);
 void                    xprt_adjust_cwnd(struct rpc_task *task, int result);
@@ -241,6 +248,7 @@ void			xprt_complete_rqst(struct rpc_task *task, int copied);
 void                    xprt_release_rqst_cong(struct rpc_task *task);
 void                    xprt_disconnect_done(struct rpc_xprt *xprt);
 void                    xprt_force_disconnect(struct rpc_xprt *xprt);
+void                    xprt_conditional_disconnect(struct rpc_xprt *xprt, unsigned int cookie);
 
 /*
  * Reserved bit positions in xprt->state