Merge branch 'for-2.6.30' of git://linux-nfs.org/~bfields/linux

* 'for-2.6.30' of git://linux-nfs.org/~bfields/linux: (81 commits)
  nfsd41: define nfsd4_set_statp as noop for !CONFIG_NFSD_V4
  nfsd41: define NFSD_DRC_SIZE_SHIFT in set_max_drc
  nfsd41: Documentation/filesystems/nfs41-server.txt
  nfsd41: CREATE_EXCLUSIVE4_1
  nfsd41: SUPPATTR_EXCLCREAT attribute
  nfsd41: support for 3-word long attribute bitmask
  nfsd: dynamically skip encoded fattr bitmap in _nfsd4_verify
  nfsd41: pass writable attrs mask to nfsd4_decode_fattr
  nfsd41: provide support for minor version 1 at rpc level
  nfsd41: control nfsv4.1 svc via /proc/fs/nfsd/versions
  nfsd41: add OPEN4_SHARE_ACCESS_WANT nfs4_stateid bmap
  nfsd41: access_valid
  nfsd41: clientid handling
  nfsd41: check encode size for sessions maxresponse cached
  nfsd41: stateid handling
  nfsd: pass nfsd4_compound_state* to nfs4_preprocess_{state,seq}id_op
  nfsd41: destroy_session operation
  nfsd41: non-page DRC for solo sequence responses
  nfsd41: Add a create session replay cache
  nfsd41: create_session operation
  ...

12 files changed, 543 insertions, 138 deletions

diff --git a/include/linux/lockd/xdr.h b/include/linux/lockd/xdr.h
index 7dc5b6c..d39ed1c 100644
--- a/include/linux/lockd/xdr.h
+++ b/include/linux/lockd/xdr.h
@@ -25,13 +25,13 @@ struct svc_rqst;
 #define NLM_MAXCOOKIELEN    	32
 #define NLM_MAXSTRLEN		1024
 
-#define	nlm_granted		__constant_htonl(NLM_LCK_GRANTED)
-#define	nlm_lck_denied		__constant_htonl(NLM_LCK_DENIED)
-#define	nlm_lck_denied_nolocks	__constant_htonl(NLM_LCK_DENIED_NOLOCKS)
-#define	nlm_lck_blocked		__constant_htonl(NLM_LCK_BLOCKED)
-#define	nlm_lck_denied_grace_period	__constant_htonl(NLM_LCK_DENIED_GRACE_PERIOD)
+#define	nlm_granted		cpu_to_be32(NLM_LCK_GRANTED)
+#define	nlm_lck_denied		cpu_to_be32(NLM_LCK_DENIED)
+#define	nlm_lck_denied_nolocks	cpu_to_be32(NLM_LCK_DENIED_NOLOCKS)
+#define	nlm_lck_blocked		cpu_to_be32(NLM_LCK_BLOCKED)
+#define	nlm_lck_denied_grace_period	cpu_to_be32(NLM_LCK_DENIED_GRACE_PERIOD)
 
-#define nlm_drop_reply		__constant_htonl(30000)
+#define nlm_drop_reply		cpu_to_be32(30000)
 
 /* Lock info passed via NLM */
 struct nlm_lock {
diff --git a/include/linux/lockd/xdr4.h b/include/linux/lockd/xdr4.h
index 12bfe09..7353821 100644
--- a/include/linux/lockd/xdr4.h
+++ b/include/linux/lockd/xdr4.h
@@ -15,11 +15,11 @@
 #include <linux/lockd/xdr.h>
 
 /* error codes new to NLMv4 */
-#define	nlm4_deadlock		__constant_htonl(NLM_DEADLCK)
-#define	nlm4_rofs		__constant_htonl(NLM_ROFS)
-#define	nlm4_stale_fh		__constant_htonl(NLM_STALE_FH)
-#define	nlm4_fbig		__constant_htonl(NLM_FBIG)
-#define	nlm4_failed		__constant_htonl(NLM_FAILED)
+#define	nlm4_deadlock		cpu_to_be32(NLM_DEADLCK)
+#define	nlm4_rofs		cpu_to_be32(NLM_ROFS)
+#define	nlm4_stale_fh		cpu_to_be32(NLM_STALE_FH)
+#define	nlm4_fbig		cpu_to_be32(NLM_FBIG)
+#define	nlm4_failed		cpu_to_be32(NLM_FAILED)
 
 
 
diff --git a/include/linux/nfs.h b/include/linux/nfs.h
index 54af92c..214d499 100644
--- a/include/linux/nfs.h
+++ b/include/linux/nfs.h
@@ -109,7 +109,6 @@
 	NFSERR_FILE_OPEN = 10046,      /*       v4 */
 	NFSERR_ADMIN_REVOKED = 10047,  /*       v4 */
 	NFSERR_CB_PATH_DOWN = 10048,   /*       v4 */
-	NFSERR_REPLAY_ME = 10049	/*       v4 */
 };
 
 /* NFSv2 file types - beware, these are not the same in NFSv3 */
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index b912311..e3f0cbc 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -21,6 +21,7 @@
 #define NFS4_FHSIZE		128
 #define NFS4_MAXPATHLEN		PATH_MAX
 #define NFS4_MAXNAMLEN		NAME_MAX
+#define NFS4_MAX_SESSIONID_LEN	16
 
 #define NFS4_ACCESS_READ        0x0001
 #define NFS4_ACCESS_LOOKUP      0x0002
@@ -38,6 +39,7 @@
 #define NFS4_OPEN_RESULT_CONFIRM 0x0002
 #define NFS4_OPEN_RESULT_LOCKTYPE_POSIX 0x0004
 
+#define NFS4_SHARE_ACCESS_MASK	0x000F
 #define NFS4_SHARE_ACCESS_READ	0x0001
 #define NFS4_SHARE_ACCESS_WRITE	0x0002
 #define NFS4_SHARE_ACCESS_BOTH	0x0003
@@ -45,6 +47,19 @@
 #define NFS4_SHARE_DENY_WRITE	0x0002
 #define NFS4_SHARE_DENY_BOTH	0x0003
 
+/* nfs41 */
+#define NFS4_SHARE_WANT_MASK		0xFF00
+#define NFS4_SHARE_WANT_NO_PREFERENCE	0x0000
+#define NFS4_SHARE_WANT_READ_DELEG	0x0100
+#define NFS4_SHARE_WANT_WRITE_DELEG	0x0200
+#define NFS4_SHARE_WANT_ANY_DELEG	0x0300
+#define NFS4_SHARE_WANT_NO_DELEG	0x0400
+#define NFS4_SHARE_WANT_CANCEL		0x0500
+
+#define NFS4_SHARE_WHEN_MASK		0xF0000
+#define NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL	0x10000
+#define NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED		0x20000
+
 #define NFS4_SET_TO_SERVER_TIME	0
 #define NFS4_SET_TO_CLIENT_TIME	1
 
@@ -88,6 +103,31 @@
 #define NFS4_ACE_GENERIC_EXECUTE              0x001200A0
 #define NFS4_ACE_MASK_ALL                     0x001F01FF
 
+#define EXCHGID4_FLAG_SUPP_MOVED_REFER		0x00000001
+#define EXCHGID4_FLAG_SUPP_MOVED_MIGR		0x00000002
+#define EXCHGID4_FLAG_USE_NON_PNFS		0x00010000
+#define EXCHGID4_FLAG_USE_PNFS_MDS		0x00020000
+#define EXCHGID4_FLAG_USE_PNFS_DS		0x00040000
+#define EXCHGID4_FLAG_UPD_CONFIRMED_REC_A	0x40000000
+#define EXCHGID4_FLAG_CONFIRMED_R		0x80000000
+/*
+ * Since the validity of these bits depends on whether
+ * they're set in the argument or response, have separate
+ * invalid flag masks for arg (_A) and resp (_R).
+ */
+#define EXCHGID4_FLAG_MASK_A			0x40070003
+#define EXCHGID4_FLAG_MASK_R			0x80070003
+
+#define SEQ4_STATUS_CB_PATH_DOWN		0x00000001
+#define SEQ4_STATUS_CB_GSS_CONTEXTS_EXPIRING	0x00000002
+#define SEQ4_STATUS_CB_GSS_CONTEXTS_EXPIRED	0x00000004
+#define SEQ4_STATUS_EXPIRED_ALL_STATE_REVOKED	0x00000008
+#define SEQ4_STATUS_EXPIRED_SOME_STATE_REVOKED	0x00000010
+#define SEQ4_STATUS_ADMIN_STATE_REVOKED		0x00000020
+#define SEQ4_STATUS_RECALLABLE_STATE_REVOKED	0x00000040
+#define SEQ4_STATUS_LEASE_MOVED			0x00000080
+#define SEQ4_STATUS_RESTART_RECLAIM_NEEDED	0x00000100
+
 #define NFS4_MAX_UINT64	(~(u64)0)
 
 enum nfs4_acl_whotype {
@@ -154,6 +194,28 @@ enum nfs_opnum4 {
 	OP_VERIFY = 37,
 	OP_WRITE = 38,
 	OP_RELEASE_LOCKOWNER = 39,
+
+	/* nfs41 */
+	OP_BACKCHANNEL_CTL = 40,
+	OP_BIND_CONN_TO_SESSION = 41,
+	OP_EXCHANGE_ID = 42,
+	OP_CREATE_SESSION = 43,
+	OP_DESTROY_SESSION = 44,
+	OP_FREE_STATEID = 45,
+	OP_GET_DIR_DELEGATION = 46,
+	OP_GETDEVICEINFO = 47,
+	OP_GETDEVICELIST = 48,
+	OP_LAYOUTCOMMIT = 49,
+	OP_LAYOUTGET = 50,
+	OP_LAYOUTRETURN = 51,
+	OP_SECINFO_NO_NAME = 52,
+	OP_SEQUENCE = 53,
+	OP_SET_SSV = 54,
+	OP_TEST_STATEID = 55,
+	OP_WANT_DELEGATION = 56,
+	OP_DESTROY_CLIENTID = 57,
+	OP_RECLAIM_COMPLETE = 58,
+
 	OP_ILLEGAL = 10044,
 };
 
@@ -230,7 +292,48 @@ enum nfsstat4 {
 	NFS4ERR_DEADLOCK = 10045,
 	NFS4ERR_FILE_OPEN = 10046,
 	NFS4ERR_ADMIN_REVOKED = 10047,
-	NFS4ERR_CB_PATH_DOWN = 10048
+	NFS4ERR_CB_PATH_DOWN = 10048,
+
+	/* nfs41 */
+	NFS4ERR_BADIOMODE	= 10049,
+	NFS4ERR_BADLAYOUT	= 10050,
+	NFS4ERR_BAD_SESSION_DIGEST = 10051,
+	NFS4ERR_BADSESSION	= 10052,
+	NFS4ERR_BADSLOT		= 10053,
+	NFS4ERR_COMPLETE_ALREADY = 10054,
+	NFS4ERR_CONN_NOT_BOUND_TO_SESSION = 10055,
+	NFS4ERR_DELEG_ALREADY_WANTED = 10056,
+	NFS4ERR_BACK_CHAN_BUSY	= 10057,	/* backchan reqs outstanding */
+	NFS4ERR_LAYOUTTRYLATER	= 10058,
+	NFS4ERR_LAYOUTUNAVAILABLE = 10059,
+	NFS4ERR_NOMATCHING_LAYOUT = 10060,
+	NFS4ERR_RECALLCONFLICT	= 10061,
+	NFS4ERR_UNKNOWN_LAYOUTTYPE = 10062,
+	NFS4ERR_SEQ_MISORDERED = 10063, 	/* unexpected seq.id in req */
+	NFS4ERR_SEQUENCE_POS	= 10064,	/* [CB_]SEQ. op not 1st op */
+	NFS4ERR_REQ_TOO_BIG	= 10065,	/* request too big */
+	NFS4ERR_REP_TOO_BIG	= 10066,	/* reply too big */
+	NFS4ERR_REP_TOO_BIG_TO_CACHE = 10067,	/* rep. not all cached */
+	NFS4ERR_RETRY_UNCACHED_REP = 10068,	/* retry & rep. uncached */
+	NFS4ERR_UNSAFE_COMPOUND = 10069,	/* retry/recovery too hard */
+	NFS4ERR_TOO_MANY_OPS	= 10070,	/* too many ops in [CB_]COMP */
+	NFS4ERR_OP_NOT_IN_SESSION = 10071,	/* op needs [CB_]SEQ. op */
+	NFS4ERR_HASH_ALG_UNSUPP = 10072,	/* hash alg. not supp. */
+						/* Error 10073 is unused. */
+	NFS4ERR_CLIENTID_BUSY	= 10074,	/* clientid has state */
+	NFS4ERR_PNFS_IO_HOLE	= 10075,	/* IO to _SPARSE file hole */
+	NFS4ERR_SEQ_FALSE_RETRY	= 10076,	/* retry not origional */
+	NFS4ERR_BAD_HIGH_SLOT	= 10077,	/* sequence arg bad */
+	NFS4ERR_DEADSESSION	= 10078,	/* persistent session dead */
+	NFS4ERR_ENCR_ALG_UNSUPP = 10079,	/* SSV alg mismatch */
+	NFS4ERR_PNFS_NO_LAYOUT	= 10080,	/* direct I/O with no layout */
+	NFS4ERR_NOT_ONLY_OP	= 10081,	/* bad compound */
+	NFS4ERR_WRONG_CRED	= 10082,	/* permissions:state change */
+	NFS4ERR_WRONG_TYPE	= 10083,	/* current operation mismatch */
+	NFS4ERR_DIRDELEG_UNAVAIL = 10084,	/* no directory delegation */
+	NFS4ERR_REJECT_DELEG	= 10085,	/* on callback */
+	NFS4ERR_RETURNCONFLICT	= 10086,	/* outstanding layoutreturn */
+	NFS4ERR_DELEG_REVOKED	= 10087,	/* deleg./layout revoked */
 };
 
 /*
@@ -265,7 +368,13 @@ enum opentype4 {
 enum createmode4 {
 	NFS4_CREATE_UNCHECKED = 0,
 	NFS4_CREATE_GUARDED = 1,
-	NFS4_CREATE_EXCLUSIVE = 2
+	NFS4_CREATE_EXCLUSIVE = 2,
+	/*
+	 * New to NFSv4.1. If session is persistent,
+	 * GUARDED4 MUST be used. Otherwise, use
+	 * EXCLUSIVE4_1 instead of EXCLUSIVE4.
+	 */
+	NFS4_CREATE_EXCLUSIVE4_1 = 3
 };
 
 enum limit_by4 {
@@ -301,6 +410,8 @@ enum lock_type4 {
 #define FATTR4_WORD0_UNIQUE_HANDLES     (1UL << 9)
 #define FATTR4_WORD0_LEASE_TIME         (1UL << 10)
 #define FATTR4_WORD0_RDATTR_ERROR       (1UL << 11)
+/* Mandatory in NFSv4.1 */
+#define FATTR4_WORD2_SUPPATTR_EXCLCREAT (1UL << 11)
 
 /* Recommended Attributes */
 #define FATTR4_WORD0_ACL                (1UL << 12)
@@ -391,6 +502,29 @@ enum {
 	NFSPROC4_CLNT_GETACL,
 	NFSPROC4_CLNT_SETACL,
 	NFSPROC4_CLNT_FS_LOCATIONS,
+
+	/* nfs41 */
+	NFSPROC4_CLNT_EXCHANGE_ID,
+	NFSPROC4_CLNT_CREATE_SESSION,
+	NFSPROC4_CLNT_DESTROY_SESSION,
+	NFSPROC4_CLNT_SEQUENCE,
+	NFSPROC4_CLNT_GET_LEASE_TIME,
+};
+
+/* nfs41 types */
+struct nfs4_sessionid {
+	unsigned char data[NFS4_MAX_SESSIONID_LEN];
+};
+
+/* Create Session Flags */
+#define SESSION4_PERSIST	 0x001
+#define SESSION4_BACK_CHAN 	 0x002
+#define SESSION4_RDMA		 0x004
+
+enum state_protect_how4 {
+	SP4_NONE	= 0,
+	SP4_MACH_CRED	= 1,
+	SP4_SSV		= 2
 };
 
 #endif
diff --git a/include/linux/nfsd/cache.h b/include/linux/nfsd/cache.h
index 04b355c..5bccaab 100644
--- a/include/linux/nfsd/cache.h
+++ b/include/linux/nfsd/cache.h
@@ -76,4 +76,12 @@ void	nfsd_reply_cache_shutdown(void);
 int	nfsd_cache_lookup(struct svc_rqst *, int);
 void	nfsd_cache_update(struct svc_rqst *, int, __be32 *);
 
+#ifdef CONFIG_NFSD_V4
+void	nfsd4_set_statp(struct svc_rqst *rqstp, __be32 *statp);
+#else  /* CONFIG_NFSD_V4 */
+static inline void nfsd4_set_statp(struct svc_rqst *rqstp, __be32 *statp)
+{
+}
+#endif /* CONFIG_NFSD_V4 */
+
 #endif /* NFSCACHE_H */
diff --git a/include/linux/nfsd/nfsd.h b/include/linux/nfsd/nfsd.h
index e19f459..2b49d67 100644
--- a/include/linux/nfsd/nfsd.h
+++ b/include/linux/nfsd/nfsd.h
@@ -23,7 +23,7 @@
 /*
  * nfsd version
  */
-#define NFSD_SUPPORTED_MINOR_VERSION	0
+#define NFSD_SUPPORTED_MINOR_VERSION	1
 
 /*
  * Flags for nfsd_permission
@@ -53,6 +53,7 @@ typedef int (*nfsd_dirop_t)(struct inode *, struct dentry *, int, int);
 extern struct svc_program	nfsd_program;
 extern struct svc_version	nfsd_version2, nfsd_version3,
 				nfsd_version4;
+extern u32			nfsd_supported_minorversion;
 extern struct mutex		nfsd_mutex;
 extern struct svc_serv		*nfsd_serv;
 
@@ -105,7 +106,7 @@ void		nfsd_close(struct file *);
 __be32 		nfsd_read(struct svc_rqst *, struct svc_fh *, struct file *,
 				loff_t, struct kvec *, int, unsigned long *);
 __be32 		nfsd_write(struct svc_rqst *, struct svc_fh *,struct file *,
-				loff_t, struct kvec *,int, unsigned long, int *);
+				loff_t, struct kvec *,int, unsigned long *, int *);
 __be32		nfsd_readlink(struct svc_rqst *, struct svc_fh *,
 				char *, int *);
 __be32		nfsd_symlink(struct svc_rqst *, struct svc_fh *,
@@ -149,6 +150,7 @@ int nfsd_set_posix_acl(struct svc_fh *, int, struct posix_acl *);
 
 enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
 int nfsd_vers(int vers, enum vers_op change);
+int nfsd_minorversion(u32 minorversion, enum vers_op change);
 void nfsd_reset_versions(void);
 int nfsd_create_serv(void);
 
@@ -186,78 +188,119 @@ void		nfsd_lockd_shutdown(void);
 /*
  * These macros provide pre-xdr'ed values for faster operation.
  */
-#define	nfs_ok			__constant_htonl(NFS_OK)
-#define	nfserr_perm		__constant_htonl(NFSERR_PERM)
-#define	nfserr_noent		__constant_htonl(NFSERR_NOENT)
-#define	nfserr_io		__constant_htonl(NFSERR_IO)
-#define	nfserr_nxio		__constant_htonl(NFSERR_NXIO)
-#define	nfserr_eagain		__constant_htonl(NFSERR_EAGAIN)
-#define	nfserr_acces		__constant_htonl(NFSERR_ACCES)
-#define	nfserr_exist		__constant_htonl(NFSERR_EXIST)
-#define	nfserr_xdev		__constant_htonl(NFSERR_XDEV)
-#define	nfserr_nodev		__constant_htonl(NFSERR_NODEV)
-#define	nfserr_notdir		__constant_htonl(NFSERR_NOTDIR)
-#define	nfserr_isdir		__constant_htonl(NFSERR_ISDIR)
-#define	nfserr_inval		__constant_htonl(NFSERR_INVAL)
-#define	nfserr_fbig		__constant_htonl(NFSERR_FBIG)
-#define	nfserr_nospc		__constant_htonl(NFSERR_NOSPC)
-#define	nfserr_rofs		__constant_htonl(NFSERR_ROFS)
-#define	nfserr_mlink		__constant_htonl(NFSERR_MLINK)
-#define	nfserr_opnotsupp	__constant_htonl(NFSERR_OPNOTSUPP)
-#define	nfserr_nametoolong	__constant_htonl(NFSERR_NAMETOOLONG)
-#define	nfserr_notempty		__constant_htonl(NFSERR_NOTEMPTY)
-#define	nfserr_dquot		__constant_htonl(NFSERR_DQUOT)
-#define	nfserr_stale		__constant_htonl(NFSERR_STALE)
-#define	nfserr_remote		__constant_htonl(NFSERR_REMOTE)
-#define	nfserr_wflush		__constant_htonl(NFSERR_WFLUSH)
-#define	nfserr_badhandle	__constant_htonl(NFSERR_BADHANDLE)
-#define	nfserr_notsync		__constant_htonl(NFSERR_NOT_SYNC)
-#define	nfserr_badcookie	__constant_htonl(NFSERR_BAD_COOKIE)
-#define	nfserr_notsupp		__constant_htonl(NFSERR_NOTSUPP)
-#define	nfserr_toosmall		__constant_htonl(NFSERR_TOOSMALL)
-#define	nfserr_serverfault	__constant_htonl(NFSERR_SERVERFAULT)
-#define	nfserr_badtype		__constant_htonl(NFSERR_BADTYPE)
-#define	nfserr_jukebox		__constant_htonl(NFSERR_JUKEBOX)
-#define	nfserr_denied		__constant_htonl(NFSERR_DENIED)
-#define	nfserr_deadlock		__constant_htonl(NFSERR_DEADLOCK)
-#define nfserr_expired          __constant_htonl(NFSERR_EXPIRED)
-#define	nfserr_bad_cookie	__constant_htonl(NFSERR_BAD_COOKIE)
-#define	nfserr_same		__constant_htonl(NFSERR_SAME)
-#define	nfserr_clid_inuse	__constant_htonl(NFSERR_CLID_INUSE)
-#define	nfserr_stale_clientid	__constant_htonl(NFSERR_STALE_CLIENTID)
-#define	nfserr_resource		__constant_htonl(NFSERR_RESOURCE)
-#define	nfserr_moved		__constant_htonl(NFSERR_MOVED)
-#define	nfserr_nofilehandle	__constant_htonl(NFSERR_NOFILEHANDLE)
-#define	nfserr_minor_vers_mismatch	__constant_htonl(NFSERR_MINOR_VERS_MISMATCH)
-#define nfserr_share_denied	__constant_htonl(NFSERR_SHARE_DENIED)
-#define nfserr_stale_stateid	__constant_htonl(NFSERR_STALE_STATEID)
-#define nfserr_old_stateid	__constant_htonl(NFSERR_OLD_STATEID)
-#define nfserr_bad_stateid	__constant_htonl(NFSERR_BAD_STATEID)
-#define nfserr_bad_seqid	__constant_htonl(NFSERR_BAD_SEQID)
-#define	nfserr_symlink		__constant_htonl(NFSERR_SYMLINK)
-#define	nfserr_not_same		__constant_htonl(NFSERR_NOT_SAME)
-#define	nfserr_restorefh	__constant_htonl(NFSERR_RESTOREFH)
-#define	nfserr_attrnotsupp	__constant_htonl(NFSERR_ATTRNOTSUPP)
-#define	nfserr_bad_xdr		__constant_htonl(NFSERR_BAD_XDR)
-#define	nfserr_openmode		__constant_htonl(NFSERR_OPENMODE)
-#define	nfserr_locks_held	__constant_htonl(NFSERR_LOCKS_HELD)
-#define	nfserr_op_illegal	__constant_htonl(NFSERR_OP_ILLEGAL)
-#define	nfserr_grace		__constant_htonl(NFSERR_GRACE)
-#define	nfserr_no_grace		__constant_htonl(NFSERR_NO_GRACE)
-#define	nfserr_reclaim_bad	__constant_htonl(NFSERR_RECLAIM_BAD)
-#define	nfserr_badname		__constant_htonl(NFSERR_BADNAME)
-#define	nfserr_cb_path_down	__constant_htonl(NFSERR_CB_PATH_DOWN)
-#define	nfserr_locked		__constant_htonl(NFSERR_LOCKED)
-#define	nfserr_wrongsec		__constant_htonl(NFSERR_WRONGSEC)
-#define	nfserr_replay_me	__constant_htonl(NFSERR_REPLAY_ME)
+#define	nfs_ok			cpu_to_be32(NFS_OK)
+#define	nfserr_perm		cpu_to_be32(NFSERR_PERM)
+#define	nfserr_noent		cpu_to_be32(NFSERR_NOENT)
+#define	nfserr_io		cpu_to_be32(NFSERR_IO)
+#define	nfserr_nxio		cpu_to_be32(NFSERR_NXIO)
+#define	nfserr_eagain		cpu_to_be32(NFSERR_EAGAIN)
+#define	nfserr_acces		cpu_to_be32(NFSERR_ACCES)
+#define	nfserr_exist		cpu_to_be32(NFSERR_EXIST)
+#define	nfserr_xdev		cpu_to_be32(NFSERR_XDEV)
+#define	nfserr_nodev		cpu_to_be32(NFSERR_NODEV)
+#define	nfserr_notdir		cpu_to_be32(NFSERR_NOTDIR)
+#define	nfserr_isdir		cpu_to_be32(NFSERR_ISDIR)
+#define	nfserr_inval		cpu_to_be32(NFSERR_INVAL)
+#define	nfserr_fbig		cpu_to_be32(NFSERR_FBIG)
+#define	nfserr_nospc		cpu_to_be32(NFSERR_NOSPC)
+#define	nfserr_rofs		cpu_to_be32(NFSERR_ROFS)
+#define	nfserr_mlink		cpu_to_be32(NFSERR_MLINK)
+#define	nfserr_opnotsupp	cpu_to_be32(NFSERR_OPNOTSUPP)
+#define	nfserr_nametoolong	cpu_to_be32(NFSERR_NAMETOOLONG)
+#define	nfserr_notempty		cpu_to_be32(NFSERR_NOTEMPTY)
+#define	nfserr_dquot		cpu_to_be32(NFSERR_DQUOT)
+#define	nfserr_stale		cpu_to_be32(NFSERR_STALE)
+#define	nfserr_remote		cpu_to_be32(NFSERR_REMOTE)
+#define	nfserr_wflush		cpu_to_be32(NFSERR_WFLUSH)
+#define	nfserr_badhandle	cpu_to_be32(NFSERR_BADHANDLE)
+#define	nfserr_notsync		cpu_to_be32(NFSERR_NOT_SYNC)
+#define	nfserr_badcookie	cpu_to_be32(NFSERR_BAD_COOKIE)
+#define	nfserr_notsupp		cpu_to_be32(NFSERR_NOTSUPP)
+#define	nfserr_toosmall		cpu_to_be32(NFSERR_TOOSMALL)
+#define	nfserr_serverfault	cpu_to_be32(NFSERR_SERVERFAULT)
+#define	nfserr_badtype		cpu_to_be32(NFSERR_BADTYPE)
+#define	nfserr_jukebox		cpu_to_be32(NFSERR_JUKEBOX)
+#define	nfserr_denied		cpu_to_be32(NFSERR_DENIED)
+#define	nfserr_deadlock		cpu_to_be32(NFSERR_DEADLOCK)
+#define nfserr_expired          cpu_to_be32(NFSERR_EXPIRED)
+#define	nfserr_bad_cookie	cpu_to_be32(NFSERR_BAD_COOKIE)
+#define	nfserr_same		cpu_to_be32(NFSERR_SAME)
+#define	nfserr_clid_inuse	cpu_to_be32(NFSERR_CLID_INUSE)
+#define	nfserr_stale_clientid	cpu_to_be32(NFSERR_STALE_CLIENTID)
+#define	nfserr_resource		cpu_to_be32(NFSERR_RESOURCE)
+#define	nfserr_moved		cpu_to_be32(NFSERR_MOVED)
+#define	nfserr_nofilehandle	cpu_to_be32(NFSERR_NOFILEHANDLE)
+#define	nfserr_minor_vers_mismatch	cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH)
+#define nfserr_share_denied	cpu_to_be32(NFSERR_SHARE_DENIED)
+#define nfserr_stale_stateid	cpu_to_be32(NFSERR_STALE_STATEID)
+#define nfserr_old_stateid	cpu_to_be32(NFSERR_OLD_STATEID)
+#define nfserr_bad_stateid	cpu_to_be32(NFSERR_BAD_STATEID)
+#define nfserr_bad_seqid	cpu_to_be32(NFSERR_BAD_SEQID)
+#define	nfserr_symlink		cpu_to_be32(NFSERR_SYMLINK)
+#define	nfserr_not_same		cpu_to_be32(NFSERR_NOT_SAME)
+#define	nfserr_restorefh	cpu_to_be32(NFSERR_RESTOREFH)
+#define	nfserr_attrnotsupp	cpu_to_be32(NFSERR_ATTRNOTSUPP)
+#define	nfserr_bad_xdr		cpu_to_be32(NFSERR_BAD_XDR)
+#define	nfserr_openmode		cpu_to_be32(NFSERR_OPENMODE)
+#define	nfserr_locks_held	cpu_to_be32(NFSERR_LOCKS_HELD)
+#define	nfserr_op_illegal	cpu_to_be32(NFSERR_OP_ILLEGAL)
+#define	nfserr_grace		cpu_to_be32(NFSERR_GRACE)
+#define	nfserr_no_grace		cpu_to_be32(NFSERR_NO_GRACE)
+#define	nfserr_reclaim_bad	cpu_to_be32(NFSERR_RECLAIM_BAD)
+#define	nfserr_badname		cpu_to_be32(NFSERR_BADNAME)
+#define	nfserr_cb_path_down	cpu_to_be32(NFSERR_CB_PATH_DOWN)
+#define	nfserr_locked		cpu_to_be32(NFSERR_LOCKED)
+#define	nfserr_wrongsec		cpu_to_be32(NFSERR_WRONGSEC)
+#define nfserr_badiomode		cpu_to_be32(NFS4ERR_BADIOMODE)
+#define nfserr_badlayout		cpu_to_be32(NFS4ERR_BADLAYOUT)
+#define nfserr_bad_session_digest	cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST)
+#define nfserr_badsession		cpu_to_be32(NFS4ERR_BADSESSION)
+#define nfserr_badslot			cpu_to_be32(NFS4ERR_BADSLOT)
+#define nfserr_complete_already		cpu_to_be32(NFS4ERR_COMPLETE_ALREADY)
+#define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION)
+#define nfserr_deleg_already_wanted	cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED)
+#define nfserr_back_chan_busy		cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY)
+#define nfserr_layouttrylater		cpu_to_be32(NFS4ERR_LAYOUTTRYLATER)
+#define nfserr_layoutunavailable	cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE)
+#define nfserr_nomatching_layout	cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT)
+#define nfserr_recallconflict		cpu_to_be32(NFS4ERR_RECALLCONFLICT)
+#define nfserr_unknown_layouttype	cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE)
+#define nfserr_seq_misordered		cpu_to_be32(NFS4ERR_SEQ_MISORDERED)
+#define nfserr_sequence_pos		cpu_to_be32(NFS4ERR_SEQUENCE_POS)
+#define nfserr_req_too_big		cpu_to_be32(NFS4ERR_REQ_TOO_BIG)
+#define nfserr_rep_too_big		cpu_to_be32(NFS4ERR_REP_TOO_BIG)
+#define nfserr_rep_too_big_to_cache	cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE)
+#define nfserr_retry_uncached_rep	cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP)
+#define nfserr_unsafe_compound		cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND)
+#define nfserr_too_many_ops		cpu_to_be32(NFS4ERR_TOO_MANY_OPS)
+#define nfserr_op_not_in_session	cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION)
+#define nfserr_hash_alg_unsupp		cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP)
+#define nfserr_clientid_busy		cpu_to_be32(NFS4ERR_CLIENTID_BUSY)
+#define nfserr_pnfs_io_hole		cpu_to_be32(NFS4ERR_PNFS_IO_HOLE)
+#define nfserr_seq_false_retry		cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY)
+#define nfserr_bad_high_slot		cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT)
+#define nfserr_deadsession		cpu_to_be32(NFS4ERR_DEADSESSION)
+#define nfserr_encr_alg_unsupp		cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP)
+#define nfserr_pnfs_no_layout		cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT)
+#define nfserr_not_only_op		cpu_to_be32(NFS4ERR_NOT_ONLY_OP)
+#define nfserr_wrong_cred		cpu_to_be32(NFS4ERR_WRONG_CRED)
+#define nfserr_wrong_type		cpu_to_be32(NFS4ERR_WRONG_TYPE)
+#define nfserr_dirdeleg_unavail		cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL)
+#define nfserr_reject_deleg		cpu_to_be32(NFS4ERR_REJECT_DELEG)
+#define nfserr_returnconflict		cpu_to_be32(NFS4ERR_RETURNCONFLICT)
+#define nfserr_deleg_revoked		cpu_to_be32(NFS4ERR_DELEG_REVOKED)
 
 /* error codes for internal use */
 /* if a request fails due to kmalloc failure, it gets dropped.
  *  Client should resend eventually
  */
-#define	nfserr_dropit		__constant_htonl(30000)
+#define	nfserr_dropit		cpu_to_be32(30000)
 /* end-of-file indicator in readdir */
-#define	nfserr_eof		__constant_htonl(30001)
+#define	nfserr_eof		cpu_to_be32(30001)
+/* replay detected */
+#define	nfserr_replay_me	cpu_to_be32(11001)
+/* nfs41 replay detected */
+#define	nfserr_replay_cache	cpu_to_be32(11002)
 
 /* Check for dir entries '.' and '..' */
 #define isdotent(n, l)	(l < 3 && n[0] == '.' && (l == 1 || n[1] == '.'))
@@ -300,7 +343,7 @@ extern struct timeval	nfssvc_boot;
  *    TIME_BACKUP   (unlikely to be supported any time soon)
  *    TIME_CREATE   (unlikely to be supported any time soon)
  */
-#define NFSD_SUPPORTED_ATTRS_WORD0                                                          \
+#define NFSD4_SUPPORTED_ATTRS_WORD0                                                         \
 (FATTR4_WORD0_SUPPORTED_ATTRS   | FATTR4_WORD0_TYPE         | FATTR4_WORD0_FH_EXPIRE_TYPE   \
  | FATTR4_WORD0_CHANGE          | FATTR4_WORD0_SIZE         | FATTR4_WORD0_LINK_SUPPORT     \
  | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR   | FATTR4_WORD0_FSID             \
@@ -312,7 +355,7 @@ extern struct timeval	nfssvc_boot;
  | FATTR4_WORD0_MAXFILESIZE     | FATTR4_WORD0_MAXLINK      | FATTR4_WORD0_MAXNAME          \
  | FATTR4_WORD0_MAXREAD         | FATTR4_WORD0_MAXWRITE     | FATTR4_WORD0_ACL)
 
-#define NFSD_SUPPORTED_ATTRS_WORD1                                                          \
+#define NFSD4_SUPPORTED_ATTRS_WORD1                                                         \
 (FATTR4_WORD1_MODE              | FATTR4_WORD1_NO_TRUNC     | FATTR4_WORD1_NUMLINKS         \
  | FATTR4_WORD1_OWNER	        | FATTR4_WORD1_OWNER_GROUP  | FATTR4_WORD1_RAWDEV           \
  | FATTR4_WORD1_SPACE_AVAIL     | FATTR4_WORD1_SPACE_FREE   | FATTR4_WORD1_SPACE_TOTAL      \
@@ -320,6 +363,35 @@ extern struct timeval	nfssvc_boot;
  | FATTR4_WORD1_TIME_DELTA   | FATTR4_WORD1_TIME_METADATA    \
  | FATTR4_WORD1_TIME_MODIFY     | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID)
 
+#define NFSD4_SUPPORTED_ATTRS_WORD2 0
+
+#define NFSD4_1_SUPPORTED_ATTRS_WORD0 \
+	NFSD4_SUPPORTED_ATTRS_WORD0
+
+#define NFSD4_1_SUPPORTED_ATTRS_WORD1 \
+	NFSD4_SUPPORTED_ATTRS_WORD1
+
+#define NFSD4_1_SUPPORTED_ATTRS_WORD2 \
+	(NFSD4_SUPPORTED_ATTRS_WORD2 | FATTR4_WORD2_SUPPATTR_EXCLCREAT)
+
+static inline u32 nfsd_suppattrs0(u32 minorversion)
+{
+	return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD0
+			    : NFSD4_SUPPORTED_ATTRS_WORD0;
+}
+
+static inline u32 nfsd_suppattrs1(u32 minorversion)
+{
+	return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD1
+			    : NFSD4_SUPPORTED_ATTRS_WORD1;
+}
+
+static inline u32 nfsd_suppattrs2(u32 minorversion)
+{
+	return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD2
+			    : NFSD4_SUPPORTED_ATTRS_WORD2;
+}
+
 /* These will return ERR_INVAL if specified in GETATTR or READDIR. */
 #define NFSD_WRITEONLY_ATTRS_WORD1							    \
 (FATTR4_WORD1_TIME_ACCESS_SET   | FATTR4_WORD1_TIME_MODIFY_SET)
@@ -330,6 +402,19 @@ extern struct timeval	nfssvc_boot;
 #define NFSD_WRITEABLE_ATTRS_WORD1                                                          \
 (FATTR4_WORD1_MODE              | FATTR4_WORD1_OWNER         | FATTR4_WORD1_OWNER_GROUP     \
  | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
+#define NFSD_WRITEABLE_ATTRS_WORD2 0
+
+#define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
+	NFSD_WRITEABLE_ATTRS_WORD0
+/*
+ * we currently store the exclusive create verifier in the v_{a,m}time
+ * attributes so the client can't set these at create time using EXCLUSIVE4_1
+ */
+#define NFSD_SUPPATTR_EXCLCREAT_WORD1 \
+	(NFSD_WRITEABLE_ATTRS_WORD1 & \
+	 ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET))
+#define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
+	NFSD_WRITEABLE_ATTRS_WORD2
 
 #endif /* CONFIG_NFSD_V4 */
 
diff --git a/include/linux/nfsd/nfsfh.h b/include/linux/nfsd/nfsfh.h
index fa317f6..afa1901 100644
--- a/include/linux/nfsd/nfsfh.h
+++ b/include/linux/nfsd/nfsfh.h
@@ -269,6 +269,13 @@ fh_copy(struct svc_fh *dst, struct svc_fh *src)
 	return dst;
 }
 
+static inline void
+fh_copy_shallow(struct knfsd_fh *dst, struct knfsd_fh *src)
+{
+	dst->fh_size = src->fh_size;
+	memcpy(&dst->fh_base, &src->fh_base, src->fh_size);
+}
+
 static __inline__ struct svc_fh *
 fh_init(struct svc_fh *fhp, int maxsize)
 {
diff --git a/include/linux/nfsd/state.h b/include/linux/nfsd/state.h
index 128298c..4d61c87 100644
--- a/include/linux/nfsd/state.h
+++ b/include/linux/nfsd/state.h
@@ -66,8 +66,7 @@ struct nfs4_cb_recall {
 	u32			cbr_ident;
 	int			cbr_trunc;
 	stateid_t		cbr_stateid;
-	u32			cbr_fhlen;
-	char			cbr_fhval[NFS4_FHSIZE];
+	struct knfsd_fh		cbr_fh;
 	struct nfs4_delegation	*cbr_dp;
 };
 
@@ -86,8 +85,7 @@ struct nfs4_delegation {
 };
 
 #define dl_stateid      dl_recall.cbr_stateid
-#define dl_fhlen        dl_recall.cbr_fhlen
-#define dl_fhval        dl_recall.cbr_fhval
+#define dl_fh           dl_recall.cbr_fh
 
 /* client delegation callback info */
 struct nfs4_callback {
@@ -101,6 +99,64 @@ struct nfs4_callback {
 	struct rpc_clnt *       cb_client;
 };
 
+/* Maximum number of slots per session. 128 is useful for long haul TCP */
+#define NFSD_MAX_SLOTS_PER_SESSION	128
+/* Maximum number of pages per slot cache entry */
+#define NFSD_PAGES_PER_SLOT	1
+/* Maximum number of operations per session compound */
+#define NFSD_MAX_OPS_PER_COMPOUND	16
+
+struct nfsd4_cache_entry {
+	__be32		ce_status;
+	struct kvec	ce_datav; /* encoded NFSv4.1 data in rq_res.head[0] */
+	struct page	*ce_respages[NFSD_PAGES_PER_SLOT + 1];
+	int		ce_cachethis;
+	short		ce_resused;
+	int		ce_opcnt;
+	int		ce_rpchdrlen;
+};
+
+struct nfsd4_slot {
+	bool				sl_inuse;
+	u32				sl_seqid;
+	struct nfsd4_cache_entry	sl_cache_entry;
+};
+
+struct nfsd4_session {
+	struct kref		se_ref;
+	struct list_head	se_hash;	/* hash by sessionid */
+	struct list_head	se_perclnt;
+	u32			se_flags;
+	struct nfs4_client	*se_client;	/* for expire_client */
+	struct nfs4_sessionid	se_sessionid;
+	u32			se_fmaxreq_sz;
+	u32			se_fmaxresp_sz;
+	u32			se_fmaxresp_cached;
+	u32			se_fmaxops;
+	u32			se_fnumslots;
+	struct nfsd4_slot	se_slots[];	/* forward channel slots */
+};
+
+static inline void
+nfsd4_put_session(struct nfsd4_session *ses)
+{
+	extern void free_session(struct kref *kref);
+	kref_put(&ses->se_ref, free_session);
+}
+
+static inline void
+nfsd4_get_session(struct nfsd4_session *ses)
+{
+	kref_get(&ses->se_ref);
+}
+
+/* formatted contents of nfs4_sessionid */
+struct nfsd4_sessionid {
+	clientid_t	clientid;
+	u32		sequence;
+	u32		reserved;
+};
+
 #define HEXDIR_LEN     33 /* hex version of 16 byte md5 of cl_name plus '\0' */
 
 /*
@@ -132,6 +188,12 @@ struct nfs4_client {
 	struct nfs4_callback	cl_callback;    /* callback info */
 	atomic_t		cl_count;	/* ref count */
 	u32			cl_firststate;	/* recovery dir creation */
+
+	/* for nfs41 */
+	struct list_head	cl_sessions;
+	struct nfsd4_slot	cl_slot;	/* create_session slot */
+	u32			cl_exchange_flags;
+	struct nfs4_sessionid	cl_sessionid;
 };
 
 /* struct nfs4_client_reset
@@ -168,8 +230,7 @@ struct nfs4_replay {
 	unsigned int		rp_buflen;
 	char			*rp_buf;
 	unsigned		intrp_allocated;
-	int			rp_openfh_len;
-	char			rp_openfh[NFS4_FHSIZE];
+	struct knfsd_fh		rp_openfh;
 	char			rp_ibuf[NFSD4_REPLAY_ISIZE];
 };
 
@@ -217,7 +278,7 @@ struct nfs4_stateowner {
 *      share_acces, share_deny on the file.
 */
 struct nfs4_file {
-	struct kref		fi_ref;
+	atomic_t		fi_ref;
 	struct list_head        fi_hash;    /* hash by "struct inode *" */
 	struct list_head        fi_stateids;
 	struct list_head	fi_delegations;
@@ -259,14 +320,13 @@ struct nfs4_stateid {
 };
 
 /* flags for preprocess_seqid_op() */
-#define CHECK_FH                0x00000001
+#define HAS_SESSION             0x00000001
 #define CONFIRM                 0x00000002
 #define OPEN_STATE              0x00000004
 #define LOCK_STATE              0x00000008
 #define RD_STATE	        0x00000010
 #define WR_STATE	        0x00000020
 #define CLOSE_STATE             0x00000040
-#define DELEG_RET               0x00000080
 
 #define seqid_mutating_err(err)                       \
 	(((err) != nfserr_stale_clientid) &&    \
@@ -274,7 +334,9 @@ struct nfs4_stateid {
 	((err) != nfserr_stale_stateid) &&      \
 	((err) != nfserr_bad_stateid))
 
-extern __be32 nfs4_preprocess_stateid_op(struct svc_fh *current_fh,
+struct nfsd4_compound_state;
+
+extern __be32 nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
 		stateid_t *stateid, int flags, struct file **filp);
 extern void nfs4_lock_state(void);
 extern void nfs4_unlock_state(void);
@@ -290,7 +352,7 @@ extern void nfsd4_init_recdir(char *recdir_name);
 extern int nfsd4_recdir_load(void);
 extern void nfsd4_shutdown_recdir(void);
 extern int nfs4_client_to_reclaim(const char *name);
-extern int nfs4_has_reclaimed_state(const char *name);
+extern int nfs4_has_reclaimed_state(const char *name, bool use_exchange_id);
 extern void nfsd4_recdir_purge_old(void);
 extern int nfsd4_create_clid_dir(struct nfs4_client *clp);
 extern void nfsd4_remove_clid_dir(struct nfs4_client *clp);
diff --git a/include/linux/nfsd/stats.h b/include/linux/nfsd/stats.h
index 7678cfb..2693ef6 100644
--- a/include/linux/nfsd/stats.h
+++ b/include/linux/nfsd/stats.h
@@ -11,6 +11,11 @@
 
 #include <linux/nfs4.h>
 
+/* thread usage wraps very million seconds (approx one fortnight) */
+#define	NFSD_USAGE_WRAP	(HZ*1000000)
+
+#ifdef __KERNEL__
+
 struct nfsd_stats {
 	unsigned int	rchits;		/* repcache hits */
 	unsigned int	rcmisses;	/* repcache hits */
@@ -35,10 +40,6 @@ struct nfsd_stats {
 
 };
 
-/* thread usage wraps very million seconds (approx one fortnight) */
-#define	NFSD_USAGE_WRAP	(HZ*1000000)
-
-#ifdef __KERNEL__
 
 extern struct nfsd_stats	nfsdstats;
 extern struct svc_stat		nfsd_svcstats;
diff --git a/include/linux/nfsd/xdr4.h b/include/linux/nfsd/xdr4.h
index 27bd3e3..f80d601 100644
--- a/include/linux/nfsd/xdr4.h
+++ b/include/linux/nfsd/xdr4.h
@@ -45,10 +45,22 @@
 #define XDR_LEN(n)                     (((n) + 3) & ~3)
 
 struct nfsd4_compound_state {
-	struct svc_fh current_fh;
-	struct svc_fh save_fh;
-	struct nfs4_stateowner *replay_owner;
-};
+	struct svc_fh		current_fh;
+	struct svc_fh		save_fh;
+	struct nfs4_stateowner	*replay_owner;
+	/* For sessions DRC */
+	struct nfsd4_session	*session;
+	struct nfsd4_slot	*slot;
+	__be32			*statp;
+	size_t			iovlen;
+	u32			minorversion;
+	u32			status;
+};
+
+static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)
+{
+	return cs->slot != NULL;
+}
 
 struct nfsd4_change_info {
 	u32		atomic;
@@ -90,7 +102,7 @@ struct nfsd4_create {
 			u32 specdata2;
 		} dev;    /* NF4BLK, NF4CHR */
 	} u;
-	u32		cr_bmval[2];        /* request */
+	u32		cr_bmval[3];        /* request */
 	struct iattr	cr_iattr;           /* request */
 	struct nfsd4_change_info  cr_cinfo; /* response */
 	struct nfs4_acl *cr_acl;
@@ -105,7 +117,7 @@ struct nfsd4_delegreturn {
 };
 
 struct nfsd4_getattr {
-	u32		ga_bmval[2];        /* request */
+	u32		ga_bmval[3];        /* request */
 	struct svc_fh	*ga_fhp;            /* response */
 };
 
@@ -206,11 +218,9 @@ struct nfsd4_open {
 	stateid_t       op_delegate_stateid; /* request - response */
 	u32		op_create;     	    /* request */
 	u32		op_createmode;      /* request */
-	u32		op_bmval[2];        /* request */
-	union {                             /* request */
-		struct iattr	iattr;                      /* UNCHECKED4,GUARDED4 */
-		nfs4_verifier	verf;                                /* EXCLUSIVE4 */
-	} u;
+	u32		op_bmval[3];        /* request */
+	struct iattr	iattr;              /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
+	nfs4_verifier	verf;               /* EXCLUSIVE4 */
 	clientid_t	op_clientid;        /* request */
 	struct xdr_netobj op_owner;           /* request */
 	u32		op_seqid;           /* request */
@@ -224,8 +234,8 @@ struct nfsd4_open {
 	struct nfs4_stateowner *op_stateowner; /* used during processing */
 	struct nfs4_acl *op_acl;
 };
-#define op_iattr	u.iattr
-#define op_verf		u.verf
+#define op_iattr	iattr
+#define op_verf		verf
 
 struct nfsd4_open_confirm {
 	stateid_t	oc_req_stateid		/* request */;
@@ -259,7 +269,7 @@ struct nfsd4_readdir {
 	nfs4_verifier	rd_verf;            /* request */
 	u32		rd_dircount;        /* request */
 	u32		rd_maxcount;        /* request */
-	u32		rd_bmval[2];        /* request */
+	u32		rd_bmval[3];        /* request */
 	struct svc_rqst *rd_rqstp;          /* response */
 	struct svc_fh * rd_fhp;             /* response */
 
@@ -301,7 +311,7 @@ struct nfsd4_secinfo {
 
 struct nfsd4_setattr {
 	stateid_t	sa_stateid;         /* request */
-	u32		sa_bmval[2];        /* request */
+	u32		sa_bmval[3];        /* request */
 	struct iattr	sa_iattr;           /* request */
 	struct nfs4_acl *sa_acl;
 };
@@ -327,7 +337,7 @@ struct nfsd4_setclientid_confirm {
 
 /* also used for NVERIFY */
 struct nfsd4_verify {
-	u32		ve_bmval[2];        /* request */
+	u32		ve_bmval[3];        /* request */
 	u32		ve_attrlen;         /* request */
 	char *		ve_attrval;         /* request */
 };
@@ -344,6 +354,54 @@ struct nfsd4_write {
 	nfs4_verifier	wr_verifier;        /* response */
 };
 
+struct nfsd4_exchange_id {
+	nfs4_verifier	verifier;
+	struct xdr_netobj clname;
+	u32		flags;
+	clientid_t	clientid;
+	u32		seqid;
+	int		spa_how;
+};
+
+struct nfsd4_channel_attrs {
+	u32		headerpadsz;
+	u32		maxreq_sz;
+	u32		maxresp_sz;
+	u32		maxresp_cached;
+	u32		maxops;
+	u32		maxreqs;
+	u32		nr_rdma_attrs;
+	u32		rdma_attrs;
+};
+
+struct nfsd4_create_session {
+	clientid_t		clientid;
+	struct nfs4_sessionid	sessionid;
+	u32			seqid;
+	u32			flags;
+	struct nfsd4_channel_attrs fore_channel;
+	struct nfsd4_channel_attrs back_channel;
+	u32			callback_prog;
+	u32			uid;
+	u32			gid;
+};
+
+struct nfsd4_sequence {
+	struct nfs4_sessionid	sessionid;		/* request/response */
+	u32			seqid;			/* request/response */
+	u32			slotid;			/* request/response */
+	u32			maxslots;		/* request/response */
+	u32			cachethis;		/* request */
+#if 0
+	u32			target_maxslots;	/* response */
+	u32			status_flags;		/* response */
+#endif /* not yet */
+};
+
+struct nfsd4_destroy_session {
+	struct nfs4_sessionid	sessionid;
+};
+
 struct nfsd4_op {
 	int					opnum;
 	__be32					status;
@@ -378,6 +436,12 @@ struct nfsd4_op {
 		struct nfsd4_verify		verify;
 		struct nfsd4_write		write;
 		struct nfsd4_release_lockowner	release_lockowner;
+
+		/* NFSv4.1 */
+		struct nfsd4_exchange_id	exchange_id;
+		struct nfsd4_create_session	create_session;
+		struct nfsd4_destroy_session	destroy_session;
+		struct nfsd4_sequence		sequence;
 	} u;
 	struct nfs4_replay *			replay;
 };
@@ -416,9 +480,22 @@ struct nfsd4_compoundres {
 	u32				taglen;
 	char *				tag;
 	u32				opcnt;
-	__be32 *			tagp; /* where to encode tag and  opcount */
+	__be32 *			tagp; /* tag, opcount encode location */
+	struct nfsd4_compound_state	cstate;
 };
 
+static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
+{
+	struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
+	return args->opcnt == 1;
+}
+
+static inline bool nfsd4_not_cached(struct nfsd4_compoundres *resp)
+{
+	return !resp->cstate.slot->sl_cache_entry.ce_cachethis ||
+			nfsd4_is_solo_sequence(resp);
+}
+
 #define NFS4_SVC_XDRSIZE		sizeof(struct nfsd4_compoundargs)
 
 static inline void
@@ -448,7 +525,23 @@ extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
 extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
 		struct nfsd4_compound_state *,
 		struct nfsd4_setclientid_confirm *setclientid_confirm);
-extern __be32 nfsd4_process_open1(struct nfsd4_open *open);
+extern void nfsd4_store_cache_entry(struct nfsd4_compoundres *resp);
+extern __be32 nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp,
+		struct nfsd4_sequence *seq);
+extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
+		struct nfsd4_compound_state *,
+struct nfsd4_exchange_id *);
+		extern __be32 nfsd4_create_session(struct svc_rqst *,
+		struct nfsd4_compound_state *,
+		struct nfsd4_create_session *);
+extern __be32 nfsd4_sequence(struct svc_rqst *,
+		struct nfsd4_compound_state *,
+		struct nfsd4_sequence *);
+extern __be32 nfsd4_destroy_session(struct svc_rqst *,
+		struct nfsd4_compound_state *,
+		struct nfsd4_destroy_session *);
+extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
+		struct nfsd4_open *open);
 extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
 		struct svc_fh *current_fh, struct nfsd4_open *open);
 extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index d3a4c02..2a30775 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -24,6 +24,15 @@
  */
 typedef int		(*svc_thread_fn)(void *);
 
+/* statistics for svc_pool structures */
+struct svc_pool_stats {
+	unsigned long	packets;
+	unsigned long	sockets_queued;
+	unsigned long	threads_woken;
+	unsigned long	overloads_avoided;
+	unsigned long	threads_timedout;
+};
+
 /*
  *
  * RPC service thread pool.
@@ -41,6 +50,8 @@ struct svc_pool {
 	struct list_head	sp_sockets;	/* pending sockets */
 	unsigned int		sp_nrthreads;	/* # of threads in pool */
 	struct list_head	sp_all_threads;	/* all server threads */
+	int			sp_nwaking;	/* number of threads woken but not yet active */
+	struct svc_pool_stats	sp_stats;	/* statistics on pool operation */
 } ____cacheline_aligned_in_smp;
 
 /*
@@ -83,6 +94,8 @@ struct svc_serv {
 	struct module *		sv_module;	/* optional module to count when
 						 * adding threads */
 	svc_thread_fn		sv_function;	/* main function for threads */
+	unsigned int		sv_drc_max_pages; /* Total pages for DRC */
+	unsigned int		sv_drc_pages_used;/* DRC pages used */
 };
 
 /*
@@ -218,6 +231,7 @@ struct svc_rqst {
 	struct svc_cred		rq_cred;	/* auth info */
 	void *			rq_xprt_ctxt;	/* transport specific context ptr */
 	struct svc_deferred_req*rq_deferred;	/* deferred request we are replaying */
+	int			rq_usedeferral;	/* use deferral */
 
 	size_t			rq_xprt_hlen;	/* xprt header len */
 	struct xdr_buf		rq_arg;
@@ -263,6 +277,7 @@ struct svc_rqst {
 						 * cache pages */
 	wait_queue_head_t	rq_wait;	/* synchronization */
 	struct task_struct	*rq_task;	/* service thread */
+	int			rq_waking;	/* 1 if thread is being woken */
 };
 
 /*
@@ -393,6 +408,7 @@ struct svc_serv *  svc_create_pooled(struct svc_program *, unsigned int,
 			void (*shutdown)(struct svc_serv *),
 			svc_thread_fn, struct module *);
 int		   svc_set_num_threads(struct svc_serv *, struct svc_pool *, int);
+int		   svc_pool_stats_open(struct svc_serv *serv, struct file *file);
 void		   svc_destroy(struct svc_serv *);
 int		   svc_process(struct svc_rqst *);
 int		   svc_register(const struct svc_serv *, const int,
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index 49e1eb4..d8910b6 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -69,27 +69,27 @@ struct xdr_buf {
  * pre-xdr'ed macros.
  */
 
-#define	xdr_zero	__constant_htonl(0)
-#define	xdr_one		__constant_htonl(1)
-#define	xdr_two		__constant_htonl(2)
-
-#define	rpc_success		__constant_htonl(RPC_SUCCESS)
-#define	rpc_prog_unavail	__constant_htonl(RPC_PROG_UNAVAIL)
-#define	rpc_prog_mismatch	__constant_htonl(RPC_PROG_MISMATCH)
-#define	rpc_proc_unavail	__constant_htonl(RPC_PROC_UNAVAIL)
-#define	rpc_garbage_args	__constant_htonl(RPC_GARBAGE_ARGS)
-#define	rpc_system_err		__constant_htonl(RPC_SYSTEM_ERR)
-#define	rpc_drop_reply		__constant_htonl(RPC_DROP_REPLY)
-
-#define	rpc_auth_ok		__constant_htonl(RPC_AUTH_OK)
-#define	rpc_autherr_badcred	__constant_htonl(RPC_AUTH_BADCRED)
-#define	rpc_autherr_rejectedcred __constant_htonl(RPC_AUTH_REJECTEDCRED)
-#define	rpc_autherr_badverf	__constant_htonl(RPC_AUTH_BADVERF)
-#define	rpc_autherr_rejectedverf __constant_htonl(RPC_AUTH_REJECTEDVERF)
-#define	rpc_autherr_tooweak	__constant_htonl(RPC_AUTH_TOOWEAK)
-#define	rpcsec_gsserr_credproblem	__constant_htonl(RPCSEC_GSS_CREDPROBLEM)
-#define	rpcsec_gsserr_ctxproblem	__constant_htonl(RPCSEC_GSS_CTXPROBLEM)
-#define	rpc_autherr_oldseqnum	__constant_htonl(101)
+#define	xdr_zero	cpu_to_be32(0)
+#define	xdr_one		cpu_to_be32(1)
+#define	xdr_two		cpu_to_be32(2)
+
+#define	rpc_success		cpu_to_be32(RPC_SUCCESS)
+#define	rpc_prog_unavail	cpu_to_be32(RPC_PROG_UNAVAIL)
+#define	rpc_prog_mismatch	cpu_to_be32(RPC_PROG_MISMATCH)
+#define	rpc_proc_unavail	cpu_to_be32(RPC_PROC_UNAVAIL)
+#define	rpc_garbage_args	cpu_to_be32(RPC_GARBAGE_ARGS)
+#define	rpc_system_err		cpu_to_be32(RPC_SYSTEM_ERR)
+#define	rpc_drop_reply		cpu_to_be32(RPC_DROP_REPLY)
+
+#define	rpc_auth_ok		cpu_to_be32(RPC_AUTH_OK)
+#define	rpc_autherr_badcred	cpu_to_be32(RPC_AUTH_BADCRED)
+#define	rpc_autherr_rejectedcred cpu_to_be32(RPC_AUTH_REJECTEDCRED)
+#define	rpc_autherr_badverf	cpu_to_be32(RPC_AUTH_BADVERF)
+#define	rpc_autherr_rejectedverf cpu_to_be32(RPC_AUTH_REJECTEDVERF)
+#define	rpc_autherr_tooweak	cpu_to_be32(RPC_AUTH_TOOWEAK)
+#define	rpcsec_gsserr_credproblem	cpu_to_be32(RPCSEC_GSS_CREDPROBLEM)
+#define	rpcsec_gsserr_ctxproblem	cpu_to_be32(RPCSEC_GSS_CTXPROBLEM)
+#define	rpc_autherr_oldseqnum	cpu_to_be32(101)
 
 /*
  * Miscellaneous XDR helper functions