diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
new file mode 100644
index 0000000..47037d9
--- /dev/null
+++ b/include/linux/nfs_xdr.h
@@ -0,0 +1,735 @@
+#ifndef _LINUX_NFS_XDR_H
+#define _LINUX_NFS_XDR_H
+
+#include <linux/sunrpc/xprt.h>
+
+struct nfs4_fsid {
+	__u64 major;
+	__u64 minor;
+};
+
+struct nfs_fattr {
+	unsigned short		valid;		/* which fields are valid */
+	__u64			pre_size;	/* pre_op_attr.size	  */
+	struct timespec		pre_mtime;	/* pre_op_attr.mtime	  */
+	struct timespec		pre_ctime;	/* pre_op_attr.ctime	  */
+	enum nfs_ftype		type;		/* always use NFSv2 types */
+	__u32			mode;
+	__u32			nlink;
+	__u32			uid;
+	__u32			gid;
+	__u64			size;
+	union {
+		struct {
+			__u32	blocksize;
+			__u32	blocks;
+		} nfs2;
+		struct {
+			__u64	used;
+		} nfs3;
+	} du;
+	dev_t			rdev;
+	union {
+		__u64		nfs3;		/* also nfs2 */
+		struct nfs4_fsid nfs4;
+	} fsid_u;
+	__u64			fileid;
+	struct timespec		atime;
+	struct timespec		mtime;
+	struct timespec		ctime;
+	__u32			bitmap[2];	/* NFSv4 returned attribute bitmap */
+	__u64			change_attr;	/* NFSv4 change attribute */
+	__u64			pre_change_attr;/* pre-op NFSv4 change attribute */
+	unsigned long		timestamp;
+};
+
+#define NFS_ATTR_WCC		0x0001		/* pre-op WCC data    */
+#define NFS_ATTR_FATTR		0x0002		/* post-op attributes */
+#define NFS_ATTR_FATTR_V3	0x0004		/* NFSv3 attributes */
+#define NFS_ATTR_FATTR_V4	0x0008
+#define NFS_ATTR_PRE_CHANGE	0x0010
+
+/*
+ * Info on the file system
+ */
+struct nfs_fsinfo {
+	struct nfs_fattr	*fattr; /* Post-op attributes */
+	__u32			rtmax;	/* max.  read transfer size */
+	__u32			rtpref;	/* pref. read transfer size */
+	__u32			rtmult;	/* reads should be multiple of this */
+	__u32			wtmax;	/* max.  write transfer size */
+	__u32			wtpref;	/* pref. write transfer size */
+	__u32			wtmult;	/* writes should be multiple of this */
+	__u32			dtpref;	/* pref. readdir transfer size */
+	__u64			maxfilesize;
+	__u32			lease_time; /* in seconds */
+};
+
+struct nfs_fsstat {
+	struct nfs_fattr	*fattr; /* Post-op attributes */
+	__u64			tbytes;	/* total size in bytes */
+	__u64			fbytes;	/* # of free bytes */
+	__u64			abytes;	/* # of bytes available to user */
+	__u64			tfiles;	/* # of files */
+	__u64			ffiles;	/* # of free files */
+	__u64			afiles;	/* # of files available to user */
+};
+
+struct nfs2_fsstat {
+	__u32			tsize;  /* Server transfer size */
+	__u32			bsize;  /* Filesystem block size */
+	__u32			blocks; /* No. of "bsize" blocks on filesystem */
+	__u32			bfree;  /* No. of free "bsize" blocks */
+	__u32			bavail; /* No. of available "bsize" blocks */
+};
+
+struct nfs_pathconf {
+	struct nfs_fattr	*fattr; /* Post-op attributes */
+	__u32			max_link; /* max # of hard links */
+	__u32			max_namelen; /* max name length */
+};
+
+struct nfs4_change_info {
+	u32			atomic;
+	u64			before;
+	u64			after;
+};
+
+/*
+ * Arguments to the open call.
+ */
+struct nfs_openargs {
+	const struct nfs_fh *	fh;
+	__u32                   seqid;
+	int			open_flags;
+	__u64                   clientid;
+	__u32                   id;
+	union {
+		struct iattr *  attrs;    /* UNCHECKED, GUARDED */
+		nfs4_verifier   verifier; /* EXCLUSIVE */
+		nfs4_stateid	delegation;		/* CLAIM_DELEGATE_CUR */
+		int		delegation_type;	/* CLAIM_PREVIOUS */
+	} u;
+	const struct qstr *	name;
+	const struct nfs_server *server;	 /* Needed for ID mapping */
+	const u32 *		bitmask;
+	__u32			claim;
+};
+
+struct nfs_openres {
+	nfs4_stateid            stateid;
+	struct nfs_fh           fh;
+	struct nfs4_change_info	cinfo;
+	__u32                   rflags;
+	struct nfs_fattr *      f_attr;
+	const struct nfs_server *server;
+	int			delegation_type;
+	nfs4_stateid		delegation;
+	__u32			do_recall;
+	__u64			maxsize;
+};
+
+/*
+ * Arguments to the open_confirm call.
+ */
+struct nfs_open_confirmargs {
+	const struct nfs_fh *	fh;
+	nfs4_stateid            stateid;
+	__u32                   seqid;
+};
+
+struct nfs_open_confirmres {
+	nfs4_stateid            stateid;
+};
+
+/*
+ * Arguments to the close call.
+ */
+struct nfs_closeargs {
+	struct nfs_fh *         fh;
+	nfs4_stateid            stateid;
+	__u32                   seqid;
+	int			open_flags;
+};
+
+struct nfs_closeres {
+	nfs4_stateid            stateid;
+};
+/*
+ *  * Arguments to the lock,lockt, and locku call.
+ *   */
+struct nfs_lowner {
+	__u64           clientid;
+	u32                     id;
+};
+
+struct nfs_open_to_lock {
+	__u32                   open_seqid;
+	nfs4_stateid            open_stateid;
+	__u32                   lock_seqid;
+	struct nfs_lowner       lock_owner;
+};
+
+struct nfs_exist_lock {
+	nfs4_stateid            stateid;
+	__u32                   seqid;
+};
+
+struct nfs_lock_opargs {
+	__u32                   reclaim;
+	__u32                   new_lock_owner;
+	union {
+		struct nfs_open_to_lock *open_lock;
+		struct nfs_exist_lock   *exist_lock;
+	} u;
+};
+
+struct nfs_locku_opargs {
+	__u32                   seqid;
+	nfs4_stateid            stateid;
+};
+
+struct nfs_lockargs {
+	struct nfs_fh *         fh;
+	__u32                   type;
+	__u64                   offset; 
+	__u64                   length; 
+	union {
+		struct nfs_lock_opargs  *lock;    /* LOCK  */
+		struct nfs_lowner       *lockt;  /* LOCKT */
+		struct nfs_locku_opargs *locku;  /* LOCKU */
+	} u;
+};
+
+struct nfs_lock_denied {
+	__u64                   offset;
+	__u64                   length;
+	__u32                   type;
+	struct nfs_lowner   	owner;
+};
+
+struct nfs_lockres {
+	union {
+		nfs4_stateid            stateid;/* LOCK success, LOCKU */
+		struct nfs_lock_denied  denied; /* LOCK failed, LOCKT success */
+	} u;
+	const struct nfs_server *	server;
+};
+
+struct nfs4_delegreturnargs {
+	const struct nfs_fh *fhandle;
+	const nfs4_stateid *stateid;
+};
+
+/*
+ * Arguments to the read call.
+ */
+
+#define NFS_READ_MAXIOV		(9U)
+#if (NFS_READ_MAXIOV > (MAX_IOVEC -2))
+#error "NFS_READ_MAXIOV is too large"
+#endif
+
+struct nfs_readargs {
+	struct nfs_fh *		fh;
+	struct nfs_open_context *context;
+	__u64			offset;
+	__u32			count;
+	unsigned int		pgbase;
+	struct page **		pages;
+};
+
+struct nfs_readres {
+	struct nfs_fattr *	fattr;
+	__u32			count;
+	int                     eof;
+};
+
+/*
+ * Arguments to the write call.
+ */
+#define NFS_WRITE_MAXIOV	(9U)
+#if (NFS_WRITE_MAXIOV > (MAX_IOVEC -2))
+#error "NFS_WRITE_MAXIOV is too large"
+#endif
+
+struct nfs_writeargs {
+	struct nfs_fh *		fh;
+	struct nfs_open_context *context;
+	__u64			offset;
+	__u32			count;
+	enum nfs3_stable_how	stable;
+	unsigned int		pgbase;
+	struct page **		pages;
+};
+
+struct nfs_writeverf {
+	enum nfs3_stable_how	committed;
+	__u32			verifier[2];
+};
+
+struct nfs_writeres {
+	struct nfs_fattr *	fattr;
+	struct nfs_writeverf *	verf;
+	__u32			count;
+};
+
+/*
+ * Argument struct for decode_entry function
+ */
+struct nfs_entry {
+	__u64			ino;
+	__u64			cookie,
+				prev_cookie;
+	const char *		name;
+	unsigned int		len;
+	int			eof;
+	struct nfs_fh *		fh;
+	struct nfs_fattr *	fattr;
+};
+
+/*
+ * The following types are for NFSv2 only.
+ */
+struct nfs_sattrargs {
+	struct nfs_fh *		fh;
+	struct iattr *		sattr;
+};
+
+struct nfs_diropargs {
+	struct nfs_fh *		fh;
+	const char *		name;
+	unsigned int		len;
+};
+
+struct nfs_createargs {
+	struct nfs_fh *		fh;
+	const char *		name;
+	unsigned int		len;
+	struct iattr *		sattr;
+};
+
+struct nfs_renameargs {
+	struct nfs_fh *		fromfh;
+	const char *		fromname;
+	unsigned int		fromlen;
+	struct nfs_fh *		tofh;
+	const char *		toname;
+	unsigned int		tolen;
+};
+
+struct nfs_setattrargs {
+	struct nfs_fh *                 fh;
+	nfs4_stateid                    stateid;
+	struct iattr *                  iap;
+	const struct nfs_server *	server; /* Needed for name mapping */
+	const u32 *			bitmask;
+};
+
+struct nfs_setattrres {
+	struct nfs_fattr *              fattr;
+	const struct nfs_server *	server;
+};
+
+struct nfs_linkargs {
+	struct nfs_fh *		fromfh;
+	struct nfs_fh *		tofh;
+	const char *		toname;
+	unsigned int		tolen;
+};
+
+struct nfs_symlinkargs {
+	struct nfs_fh *		fromfh;
+	const char *		fromname;
+	unsigned int		fromlen;
+	const char *		topath;
+	unsigned int		tolen;
+	struct iattr *		sattr;
+};
+
+struct nfs_readdirargs {
+	struct nfs_fh *		fh;
+	__u32			cookie;
+	unsigned int		count;
+	struct page **		pages;
+};
+
+struct nfs_diropok {
+	struct nfs_fh *		fh;
+	struct nfs_fattr *	fattr;
+};
+
+struct nfs_readlinkargs {
+	struct nfs_fh *		fh;
+	unsigned int		pgbase;
+	unsigned int		pglen;
+	struct page **		pages;
+};
+
+struct nfs3_sattrargs {
+	struct nfs_fh *		fh;
+	struct iattr *		sattr;
+	unsigned int		guard;
+	struct timespec		guardtime;
+};
+
+struct nfs3_diropargs {
+	struct nfs_fh *		fh;
+	const char *		name;
+	unsigned int		len;
+};
+
+struct nfs3_accessargs {
+	struct nfs_fh *		fh;
+	__u32			access;
+};
+
+struct nfs3_createargs {
+	struct nfs_fh *		fh;
+	const char *		name;
+	unsigned int		len;
+	struct iattr *		sattr;
+	enum nfs3_createmode	createmode;
+	__u32			verifier[2];
+};
+
+struct nfs3_mkdirargs {
+	struct nfs_fh *		fh;
+	const char *		name;
+	unsigned int		len;
+	struct iattr *		sattr;
+};
+
+struct nfs3_symlinkargs {
+	struct nfs_fh *		fromfh;
+	const char *		fromname;
+	unsigned int		fromlen;
+	const char *		topath;
+	unsigned int		tolen;
+	struct iattr *		sattr;
+};
+
+struct nfs3_mknodargs {
+	struct nfs_fh *		fh;
+	const char *		name;
+	unsigned int		len;
+	enum nfs3_ftype		type;
+	struct iattr *		sattr;
+	dev_t			rdev;
+};
+
+struct nfs3_renameargs {
+	struct nfs_fh *		fromfh;
+	const char *		fromname;
+	unsigned int		fromlen;
+	struct nfs_fh *		tofh;
+	const char *		toname;
+	unsigned int		tolen;
+};
+
+struct nfs3_linkargs {
+	struct nfs_fh *		fromfh;
+	struct nfs_fh *		tofh;
+	const char *		toname;
+	unsigned int		tolen;
+};
+
+struct nfs3_readdirargs {
+	struct nfs_fh *		fh;
+	__u64			cookie;
+	__u32			verf[2];
+	int			plus;
+	unsigned int            count;
+	struct page **		pages;
+};
+
+struct nfs3_diropres {
+	struct nfs_fattr *	dir_attr;
+	struct nfs_fh *		fh;
+	struct nfs_fattr *	fattr;
+};
+
+struct nfs3_accessres {
+	struct nfs_fattr *	fattr;
+	__u32			access;
+};
+
+struct nfs3_readlinkargs {
+	struct nfs_fh *		fh;
+	unsigned int		pgbase;
+	unsigned int		pglen;
+	struct page **		pages;
+};
+
+struct nfs3_renameres {
+	struct nfs_fattr *	fromattr;
+	struct nfs_fattr *	toattr;
+};
+
+struct nfs3_linkres {
+	struct nfs_fattr *	dir_attr;
+	struct nfs_fattr *	fattr;
+};
+
+struct nfs3_readdirres {
+	struct nfs_fattr *	dir_attr;
+	__u32 *			verf;
+	int			plus;
+};
+
+#ifdef CONFIG_NFS_V4
+
+typedef u64 clientid4;
+
+struct nfs4_accessargs {
+	const struct nfs_fh *		fh;
+	u32				access;
+};
+
+struct nfs4_accessres {
+	u32				supported;
+	u32				access;
+};
+
+struct nfs4_create_arg {
+	u32				ftype;
+	union {
+		struct qstr *		symlink;    /* NF4LNK */
+		struct {
+			u32		specdata1;
+			u32		specdata2;
+		} device;    /* NF4BLK, NF4CHR */
+	} u;
+	const struct qstr *		name;
+	const struct nfs_server *	server;
+	const struct iattr *		attrs;
+	const struct nfs_fh *		dir_fh;
+	const u32 *			bitmask;
+};
+
+struct nfs4_create_res {
+	const struct nfs_server *	server;
+	struct nfs_fh *			fh;
+	struct nfs_fattr *		fattr;
+	struct nfs4_change_info		dir_cinfo;
+};
+
+struct nfs4_fsinfo_arg {
+	const struct nfs_fh *		fh;
+	const u32 *			bitmask;
+};
+
+struct nfs4_getattr_arg {
+	const struct nfs_fh *		fh;
+	const u32 *			bitmask;
+};
+
+struct nfs4_getattr_res {
+	const struct nfs_server *	server;
+	struct nfs_fattr *		fattr;
+};
+
+struct nfs4_link_arg {
+	const struct nfs_fh *		fh;
+	const struct nfs_fh *		dir_fh;
+	const struct qstr *		name;
+};
+
+struct nfs4_lookup_arg {
+	const struct nfs_fh *		dir_fh;
+	const struct qstr *		name;
+	const u32 *			bitmask;
+};
+
+struct nfs4_lookup_res {
+	const struct nfs_server *	server;
+	struct nfs_fattr *		fattr;
+	struct nfs_fh *			fh;
+};
+
+struct nfs4_lookup_root_arg {
+	const u32 *			bitmask;
+};
+
+struct nfs4_pathconf_arg {
+	const struct nfs_fh *		fh;
+	const u32 *			bitmask;
+};
+
+struct nfs4_readdir_arg {
+	const struct nfs_fh *		fh;
+	u64				cookie;
+	nfs4_verifier			verifier;
+	u32				count;
+	struct page **			pages;	/* zero-copy data */
+	unsigned int			pgbase;	/* zero-copy data */
+	const u32 *			bitmask;
+};
+
+struct nfs4_readdir_res {
+	nfs4_verifier			verifier;
+	unsigned int			pgbase;
+};
+
+struct nfs4_readlink {
+	const struct nfs_fh *		fh;
+	unsigned int			pgbase;
+	unsigned int			pglen;   /* zero-copy data */
+	struct page **			pages;   /* zero-copy data */
+};
+
+struct nfs4_remove_arg {
+	const struct nfs_fh *		fh;
+	const struct qstr *		name;
+};
+
+struct nfs4_rename_arg {
+	const struct nfs_fh *		old_dir;
+	const struct nfs_fh *		new_dir;
+	const struct qstr *		old_name;
+	const struct qstr *		new_name;
+};
+
+struct nfs4_rename_res {
+	struct nfs4_change_info		old_cinfo;
+	struct nfs4_change_info		new_cinfo;
+};
+
+struct nfs4_setclientid {
+	const nfs4_verifier *		sc_verifier;      /* request */
+	unsigned int			sc_name_len;
+	char				sc_name[32];	  /* request */
+	u32				sc_prog;          /* request */
+	unsigned int			sc_netid_len;
+	char				sc_netid[4];	  /* request */
+	unsigned int			sc_uaddr_len;
+	char				sc_uaddr[24];     /* request */
+	u32				sc_cb_ident;      /* request */
+};
+
+struct nfs4_statfs_arg {
+	const struct nfs_fh *		fh;
+	const u32 *			bitmask;
+};
+
+struct nfs4_server_caps_res {
+	u32				attr_bitmask[2];
+	u32				acl_bitmask;
+	u32				has_links;
+	u32				has_symlinks;
+};
+
+#endif /* CONFIG_NFS_V4 */
+
+struct nfs_page;
+
+struct nfs_read_data {
+	int			flags;
+	struct rpc_task		task;
+	struct inode		*inode;
+	struct rpc_cred		*cred;
+	struct nfs_fattr	fattr;	/* fattr storage */
+	struct list_head	pages;	/* Coalesced read requests */
+	struct nfs_page		*req;	/* multi ops per nfs_page */
+	struct page		*pagevec[NFS_READ_MAXIOV];
+	struct nfs_readargs args;
+	struct nfs_readres  res;
+#ifdef CONFIG_NFS_V4
+	unsigned long		timestamp;	/* For lease renewal */
+#endif
+	void (*complete) (struct nfs_read_data *, int);
+};
+
+struct nfs_write_data {
+	int			flags;
+	struct rpc_task		task;
+	struct inode		*inode;
+	struct rpc_cred		*cred;
+	struct nfs_fattr	fattr;
+	struct nfs_writeverf	verf;
+	struct list_head	pages;		/* Coalesced requests we wish to flush */
+	struct nfs_page		*req;		/* multi ops per nfs_page */
+	struct page		*pagevec[NFS_WRITE_MAXIOV];
+	struct nfs_writeargs	args;		/* argument struct */
+	struct nfs_writeres	res;		/* result struct */
+#ifdef CONFIG_NFS_V4
+	unsigned long		timestamp;	/* For lease renewal */
+#endif
+	void (*complete) (struct nfs_write_data *, int);
+};
+
+struct nfs_access_entry;
+
+/*
+ * RPC procedure vector for NFSv2/NFSv3 demuxing
+ */
+struct nfs_rpc_ops {
+	int	version;		/* Protocol version */
+	struct dentry_operations *dentry_ops;
+	struct inode_operations *dir_inode_ops;
+
+	int	(*getroot) (struct nfs_server *, struct nfs_fh *,
+			    struct nfs_fsinfo *);
+	int	(*getattr) (struct nfs_server *, struct nfs_fh *,
+			    struct nfs_fattr *);
+	int	(*setattr) (struct dentry *, struct nfs_fattr *,
+			    struct iattr *);
+	int	(*lookup)  (struct inode *, struct qstr *,
+			    struct nfs_fh *, struct nfs_fattr *);
+	int	(*access)  (struct inode *, struct nfs_access_entry *);
+	int	(*readlink)(struct inode *, struct page *, unsigned int,
+			    unsigned int);
+	int	(*read)    (struct nfs_read_data *);
+	int	(*write)   (struct nfs_write_data *);
+	int	(*commit)  (struct nfs_write_data *);
+	int	(*create)  (struct inode *, struct dentry *,
+			    struct iattr *, int);
+	int	(*remove)  (struct inode *, struct qstr *);
+	int	(*unlink_setup)  (struct rpc_message *,
+			    struct dentry *, struct qstr *);
+	int	(*unlink_done) (struct dentry *, struct rpc_task *);
+	int	(*rename)  (struct inode *, struct qstr *,
+			    struct inode *, struct qstr *);
+	int	(*link)    (struct inode *, struct inode *, struct qstr *);
+	int	(*symlink) (struct inode *, struct qstr *, struct qstr *,
+			    struct iattr *, struct nfs_fh *,
+			    struct nfs_fattr *);
+	int	(*mkdir)   (struct inode *, struct dentry *, struct iattr *);
+	int	(*rmdir)   (struct inode *, struct qstr *);
+	int	(*readdir) (struct dentry *, struct rpc_cred *,
+			    u64, struct page *, unsigned int, int);
+	int	(*mknod)   (struct inode *, struct dentry *, struct iattr *,
+			    dev_t);
+	int	(*statfs)  (struct nfs_server *, struct nfs_fh *,
+			    struct nfs_fsstat *);
+	int	(*fsinfo)  (struct nfs_server *, struct nfs_fh *,
+			    struct nfs_fsinfo *);
+	int	(*pathconf) (struct nfs_server *, struct nfs_fh *,
+			     struct nfs_pathconf *);
+	u32 *	(*decode_dirent)(u32 *, struct nfs_entry *, int plus);
+	void	(*read_setup)   (struct nfs_read_data *);
+	void	(*write_setup)  (struct nfs_write_data *, int how);
+	void	(*commit_setup) (struct nfs_write_data *, int how);
+	int	(*file_open)   (struct inode *, struct file *);
+	int	(*file_release) (struct inode *, struct file *);
+	int	(*lock)(struct file *, int, struct file_lock *);
+};
+
+/*
+ * 	NFS_CALL(getattr, inode, (fattr));
+ * into
+ *	NFS_PROTO(inode)->getattr(fattr);
+ */
+#define NFS_CALL(op, inode, args)	NFS_PROTO(inode)->op args
+
+/*
+ * Function vectors etc. for the NFS client
+ */
+extern struct nfs_rpc_ops	nfs_v2_clientops;
+extern struct nfs_rpc_ops	nfs_v3_clientops;
+extern struct nfs_rpc_ops	nfs_v4_clientops;
+extern struct rpc_version	nfs_version2;
+extern struct rpc_version	nfs_version3;
+extern struct rpc_version	nfs_version4;
+
+#endif