Merge branch 'devel' into for-linus

23 files changed, 584 insertions, 420 deletions

diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c
index aedc47a..1f3b0fc 100644
--- a/fs/lockd/clntlock.c
+++ b/fs/lockd/clntlock.c
@@ -139,55 +139,6 @@ int nlmclnt_block(struct nlm_wait *block, struct nlm_rqst *req, long timeout)
 	return 0;
 }
 
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-static const struct in6_addr *nlmclnt_map_v4addr(const struct sockaddr *sap,
-						 struct in6_addr *addr_mapped)
-{
-	const struct sockaddr_in *sin = (const struct sockaddr_in *)sap;
-
-	switch (sap->sa_family) {
-	case AF_INET6:
-		return &((const struct sockaddr_in6 *)sap)->sin6_addr;
-	case AF_INET:
-		ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, addr_mapped);
-		return addr_mapped;
-	}
-
-	return NULL;
-}
-
-/*
- * If lockd is using a PF_INET6 listener, all incoming requests appear
- * to come from AF_INET6 remotes.  The address of AF_INET remotes are
- * mapped to AF_INET6 automatically by the network layer.  In case the
- * user passed an AF_INET server address at mount time, ensure both
- * addresses are AF_INET6 before comparing them.
- */
-static int nlmclnt_cmp_addr(const struct nlm_host *host,
-			    const struct sockaddr *sap)
-{
-	const struct in6_addr *addr1;
-	const struct in6_addr *addr2;
-	struct in6_addr addr1_mapped;
-	struct in6_addr addr2_mapped;
-
-	addr1 = nlmclnt_map_v4addr(nlm_addr(host), &addr1_mapped);
-	if (likely(addr1 != NULL)) {
-		addr2 = nlmclnt_map_v4addr(sap, &addr2_mapped);
-		if (likely(addr2 != NULL))
-			return ipv6_addr_equal(addr1, addr2);
-	}
-
-	return 0;
-}
-#else	/* !(CONFIG_IPV6 || CONFIG_IPV6_MODULE) */
-static int nlmclnt_cmp_addr(const struct nlm_host *host,
-			    const struct sockaddr *sap)
-{
-	return nlm_cmp_addr(nlm_addr(host), sap);
-}
-#endif	/* !(CONFIG_IPV6 || CONFIG_IPV6_MODULE) */
-
 /*
  * The server lockd has called us back to tell us the lock was granted
  */
@@ -215,7 +166,7 @@ __be32 nlmclnt_grant(const struct sockaddr *addr, const struct nlm_lock *lock)
 		 */
 		if (fl_blocked->fl_u.nfs_fl.owner->pid != lock->svid)
 			continue;
-		if (!nlmclnt_cmp_addr(block->b_host, addr))
+		if (!nlm_cmp_addr(nlm_addr(block->b_host), addr))
 			continue;
 		if (nfs_compare_fh(NFS_FH(fl_blocked->fl_file->f_path.dentry->d_inode) ,fh) != 0)
 			continue;
diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c
index 5e2c4d5..6d5d4a4 100644
--- a/fs/lockd/mon.c
+++ b/fs/lockd/mon.c
@@ -16,6 +16,8 @@
 #include <linux/sunrpc/svc.h>
 #include <linux/lockd/lockd.h>
 
+#include <asm/unaligned.h>
+
 #define NLMDBG_FACILITY		NLMDBG_MONITOR
 #define NSM_PROGRAM		100024
 #define NSM_VERSION		1
@@ -274,10 +276,12 @@ static void nsm_init_private(struct nsm_handle *nsm)
 {
 	u64 *p = (u64 *)&nsm->sm_priv.data;
 	struct timespec ts;
+	s64 ns;
 
 	ktime_get_ts(&ts);
-	*p++ = timespec_to_ns(&ts);
-	*p = (unsigned long)nsm;
+	ns = timespec_to_ns(&ts);
+	put_unaligned(ns, p);
+	put_unaligned((unsigned long)nsm, p + 1);
 }
 
 static struct nsm_handle *nsm_create_handle(const struct sockaddr *sap,
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 64f1c31..abf8388 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -53,17 +53,6 @@ static struct svc_rqst		*nlmsvc_rqst;
 unsigned long			nlmsvc_timeout;
 
 /*
- * If the kernel has IPv6 support available, always listen for
- * both AF_INET and AF_INET6 requests.
- */
-#if (defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)) && \
-	defined(CONFIG_SUNRPC_REGISTER_V4)
-static const sa_family_t	nlmsvc_family = AF_INET6;
-#else	/* (CONFIG_IPV6 || CONFIG_IPV6_MODULE) && CONFIG_SUNRPC_REGISTER_V4 */
-static const sa_family_t	nlmsvc_family = AF_INET;
-#endif	/* (CONFIG_IPV6 || CONFIG_IPV6_MODULE) && CONFIG_SUNRPC_REGISTER_V4 */
-
-/*
  * These can be set at insmod time (useful for NFS as root filesystem),
  * and also changed through the sysctl interface.  -- Jamie Lokier, Aug 2003
  */
@@ -204,19 +193,30 @@ lockd(void *vrqstp)
 	return 0;
 }
 
-static int create_lockd_listener(struct svc_serv *serv, char *name,
-				 unsigned short port)
+static int create_lockd_listener(struct svc_serv *serv, const char *name,
+				 const int family, const unsigned short port)
 {
 	struct svc_xprt *xprt;
 
-	xprt = svc_find_xprt(serv, name, 0, 0);
+	xprt = svc_find_xprt(serv, name, family, 0);
 	if (xprt == NULL)
-		return svc_create_xprt(serv, name, port, SVC_SOCK_DEFAULTS);
-
+		return svc_create_xprt(serv, name, family, port,
+						SVC_SOCK_DEFAULTS);
 	svc_xprt_put(xprt);
 	return 0;
 }
 
+static int create_lockd_family(struct svc_serv *serv, const int family)
+{
+	int err;
+
+	err = create_lockd_listener(serv, "udp", family, nlm_udpport);
+	if (err < 0)
+		return err;
+
+	return create_lockd_listener(serv, "tcp", family, nlm_tcpport);
+}
+
 /*
  * Ensure there are active UDP and TCP listeners for lockd.
  *
@@ -232,13 +232,15 @@ static int make_socks(struct svc_serv *serv)
 	static int warned;
 	int err;
 
-	err = create_lockd_listener(serv, "udp", nlm_udpport);
+	err = create_lockd_family(serv, PF_INET);
 	if (err < 0)
 		goto out_err;
 
-	err = create_lockd_listener(serv, "tcp", nlm_tcpport);
-	if (err < 0)
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+	err = create_lockd_family(serv, PF_INET6);
+	if (err < 0 && err != -EAFNOSUPPORT)
 		goto out_err;
+#endif	/* CONFIG_IPV6 || CONFIG_IPV6_MODULE */
 
 	warned = 0;
 	return 0;
@@ -274,7 +276,7 @@ int lockd_up(void)
 			"lockd_up: no pid, %d users??\n", nlmsvc_users);
 
 	error = -ENOMEM;
-	serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, nlmsvc_family, NULL);
+	serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, NULL);
 	if (!serv) {
 		printk(KERN_WARNING "lockd_up: create service failed\n");
 		goto out;
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index 3e634f2a..a886e69 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -38,19 +38,10 @@ static struct svc_program nfs4_callback_program;
 
 unsigned int nfs_callback_set_tcpport;
 unsigned short nfs_callback_tcpport;
+unsigned short nfs_callback_tcpport6;
 static const int nfs_set_port_min = 0;
 static const int nfs_set_port_max = 65535;
 
-/*
- * If the kernel has IPv6 support available, always listen for
- * both AF_INET and AF_INET6 requests.
- */
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-static const sa_family_t	nfs_callback_family = AF_INET6;
-#else
-static const sa_family_t	nfs_callback_family = AF_INET;
-#endif
-
 static int param_set_port(const char *val, struct kernel_param *kp)
 {
 	char *endp;
@@ -116,19 +107,29 @@ int nfs_callback_up(void)
 	mutex_lock(&nfs_callback_mutex);
 	if (nfs_callback_info.users++ || nfs_callback_info.task != NULL)
 		goto out;
-	serv = svc_create(&nfs4_callback_program, NFS4_CALLBACK_BUFSIZE,
-				nfs_callback_family, NULL);
+	serv = svc_create(&nfs4_callback_program, NFS4_CALLBACK_BUFSIZE, NULL);
 	ret = -ENOMEM;
 	if (!serv)
 		goto out_err;
 
-	ret = svc_create_xprt(serv, "tcp", nfs_callback_set_tcpport,
-			      SVC_SOCK_ANONYMOUS);
+	ret = svc_create_xprt(serv, "tcp", PF_INET,
+				nfs_callback_set_tcpport, SVC_SOCK_ANONYMOUS);
 	if (ret <= 0)
 		goto out_err;
 	nfs_callback_tcpport = ret;
 	dprintk("NFS: Callback listener port = %u (af %u)\n",
-			nfs_callback_tcpport, nfs_callback_family);
+			nfs_callback_tcpport, PF_INET);
+
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+	ret = svc_create_xprt(serv, "tcp", PF_INET6,
+				nfs_callback_set_tcpport, SVC_SOCK_ANONYMOUS);
+	if (ret > 0) {
+		nfs_callback_tcpport6 = ret;
+		dprintk("NFS: Callback listener port = %u (af %u)\n",
+				nfs_callback_tcpport6, PF_INET6);
+	} else if (ret != -EAFNOSUPPORT)
+		goto out_err;
+#endif	/* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
 
 	nfs_callback_info.rqst = svc_prepare_thread(serv, &serv->sv_pools[0]);
 	if (IS_ERR(nfs_callback_info.rqst)) {
diff --git a/fs/nfs/callback.h b/fs/nfs/callback.h
index bb25d21..e110e28 100644
--- a/fs/nfs/callback.h
+++ b/fs/nfs/callback.h
@@ -72,5 +72,6 @@ extern void nfs_callback_down(void);
 
 extern unsigned int nfs_callback_set_tcpport;
 extern unsigned short nfs_callback_tcpport;
+extern unsigned short nfs_callback_tcpport6;
 
 #endif /* __LINUX_FS_NFS_CALLBACK_H */
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 2277421..aba3801 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -224,38 +224,6 @@ void nfs_put_client(struct nfs_client *clp)
 }
 
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-static const struct in6_addr *nfs_map_ipv4_addr(const struct sockaddr *sa, struct in6_addr *addr_mapped)
-{
-	switch (sa->sa_family) {
-		default:
-			return NULL;
-		case AF_INET6:
-			return &((const struct sockaddr_in6 *)sa)->sin6_addr;
-			break;
-		case AF_INET:
-			ipv6_addr_set_v4mapped(((const struct sockaddr_in *)sa)->sin_addr.s_addr,
-					addr_mapped);
-			return addr_mapped;
-	}
-}
-
-static int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1,
-		const struct sockaddr *sa2)
-{
-	const struct in6_addr *addr1;
-	const struct in6_addr *addr2;
-	struct in6_addr addr1_mapped;
-	struct in6_addr addr2_mapped;
-
-	addr1 = nfs_map_ipv4_addr(sa1, &addr1_mapped);
-	if (likely(addr1 != NULL)) {
-		addr2 = nfs_map_ipv4_addr(sa2, &addr2_mapped);
-		if (likely(addr2 != NULL))
-			return ipv6_addr_equal(addr1, addr2);
-	}
-	return 0;
-}
-
 /*
  * Test if two ip6 socket addresses refer to the same socket by
  * comparing relevant fields. The padding bytes specifically, are not
@@ -267,38 +235,21 @@ static int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1,
  *
  * The caller should ensure both socket addresses are AF_INET6.
  */
-static int nfs_sockaddr_cmp_ip6(const struct sockaddr *sa1,
-				const struct sockaddr *sa2)
+static int nfs_sockaddr_match_ipaddr6(const struct sockaddr *sa1,
+				      const struct sockaddr *sa2)
 {
-	const struct sockaddr_in6 *saddr1 = (const struct sockaddr_in6 *)sa1;
-	const struct sockaddr_in6 *saddr2 = (const struct sockaddr_in6 *)sa2;
+	const struct sockaddr_in6 *sin1 = (const struct sockaddr_in6 *)sa1;
+	const struct sockaddr_in6 *sin2 = (const struct sockaddr_in6 *)sa2;
 
-	if (!ipv6_addr_equal(&saddr1->sin6_addr,
-			     &saddr1->sin6_addr))
+	if (ipv6_addr_scope(&sin1->sin6_addr) == IPV6_ADDR_SCOPE_LINKLOCAL &&
+	    sin1->sin6_scope_id != sin2->sin6_scope_id)
 		return 0;
-	if (ipv6_addr_scope(&saddr1->sin6_addr) == IPV6_ADDR_SCOPE_LINKLOCAL &&
-	    saddr1->sin6_scope_id != saddr2->sin6_scope_id)
-		return 0;
-	return saddr1->sin6_port == saddr2->sin6_port;
-}
-#else
-static int nfs_sockaddr_match_ipaddr4(const struct sockaddr_in *sa1,
-				 const struct sockaddr_in *sa2)
-{
-	return sa1->sin_addr.s_addr == sa2->sin_addr.s_addr;
-}
 
-static int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1,
-				 const struct sockaddr *sa2)
-{
-	if (unlikely(sa1->sa_family != AF_INET || sa2->sa_family != AF_INET))
-		return 0;
-	return nfs_sockaddr_match_ipaddr4((const struct sockaddr_in *)sa1,
-			(const struct sockaddr_in *)sa2);
+	return ipv6_addr_equal(&sin1->sin6_addr, &sin1->sin6_addr);
 }
-
-static int nfs_sockaddr_cmp_ip6(const struct sockaddr * sa1,
-				const struct sockaddr * sa2)
+#else	/* !defined(CONFIG_IPV6) && !defined(CONFIG_IPV6_MODULE) */
+static int nfs_sockaddr_match_ipaddr6(const struct sockaddr *sa1,
+				      const struct sockaddr *sa2)
 {
 	return 0;
 }
@@ -311,20 +262,57 @@ static int nfs_sockaddr_cmp_ip6(const struct sockaddr * sa1,
  *
  * The caller should ensure both socket addresses are AF_INET.
  */
+static int nfs_sockaddr_match_ipaddr4(const struct sockaddr *sa1,
+				      const struct sockaddr *sa2)
+{
+	const struct sockaddr_in *sin1 = (const struct sockaddr_in *)sa1;
+	const struct sockaddr_in *sin2 = (const struct sockaddr_in *)sa2;
+
+	return sin1->sin_addr.s_addr == sin2->sin_addr.s_addr;
+}
+
+static int nfs_sockaddr_cmp_ip6(const struct sockaddr *sa1,
+				const struct sockaddr *sa2)
+{
+	const struct sockaddr_in6 *sin1 = (const struct sockaddr_in6 *)sa1;
+	const struct sockaddr_in6 *sin2 = (const struct sockaddr_in6 *)sa2;
+
+	return nfs_sockaddr_match_ipaddr6(sa1, sa2) &&
+		(sin1->sin6_port == sin2->sin6_port);
+}
+
 static int nfs_sockaddr_cmp_ip4(const struct sockaddr *sa1,
 				const struct sockaddr *sa2)
 {
-	const struct sockaddr_in *saddr1 = (const struct sockaddr_in *)sa1;
-	const struct sockaddr_in *saddr2 = (const struct sockaddr_in *)sa2;
+	const struct sockaddr_in *sin1 = (const struct sockaddr_in *)sa1;
+	const struct sockaddr_in *sin2 = (const struct sockaddr_in *)sa2;
 
-	if (saddr1->sin_addr.s_addr != saddr2->sin_addr.s_addr)
+	return nfs_sockaddr_match_ipaddr4(sa1, sa2) &&
+		(sin1->sin_port == sin2->sin_port);
+}
+
+/*
+ * Test if two socket addresses represent the same actual socket,
+ * by comparing (only) relevant fields, excluding the port number.
+ */
+static int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1,
+				     const struct sockaddr *sa2)
+{
+	if (sa1->sa_family != sa2->sa_family)
 		return 0;
-	return saddr1->sin_port == saddr2->sin_port;
+
+	switch (sa1->sa_family) {
+	case AF_INET:
+		return nfs_sockaddr_match_ipaddr4(sa1, sa2);
+	case AF_INET6:
+		return nfs_sockaddr_match_ipaddr6(sa1, sa2);
+	}
+	return 0;
 }
 
 /*
  * Test if two socket addresses represent the same actual socket,
- * by comparing (only) relevant fields.
+ * by comparing (only) relevant fields, including the port number.
  */
 static int nfs_sockaddr_cmp(const struct sockaddr *sa1,
 			    const struct sockaddr *sa2)
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 78bf72f..370b190 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1624,8 +1624,7 @@ static int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 		} else if (atomic_read(&new_dentry->d_count) > 1)
 			/* dentry still busy? */
 			goto out;
-	} else
-		nfs_drop_nlink(new_inode);
+	}
 
 go_ahead:
 	/*
@@ -1638,10 +1637,8 @@ go_ahead:
 	}
 	nfs_inode_return_delegation(old_inode);
 
-	if (new_inode != NULL) {
+	if (new_inode != NULL)
 		nfs_inode_return_delegation(new_inode);
-		d_delete(new_dentry);
-	}
 
 	error = NFS_PROTO(old_dir)->rename(old_dir, &old_dentry->d_name,
 					   new_dir, &new_dentry->d_name);
@@ -1650,6 +1647,8 @@ out:
 	if (rehash)
 		d_rehash(rehash);
 	if (!error) {
+		if (new_inode != NULL)
+			nfs_drop_nlink(new_inode);
 		d_move(old_dentry, new_dentry);
 		nfs_set_verifier(new_dentry,
 					nfs_save_change_attribute(new_dir));
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index cec7939..0abf3f3 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -64,11 +64,7 @@ const struct file_operations nfs_file_operations = {
 	.write		= do_sync_write,
 	.aio_read	= nfs_file_read,
 	.aio_write	= nfs_file_write,
-#ifdef CONFIG_MMU
 	.mmap		= nfs_file_mmap,
-#else
-	.mmap		= generic_file_mmap,
-#endif
 	.open		= nfs_file_open,
 	.flush		= nfs_file_flush,
 	.release	= nfs_file_release,
@@ -141,9 +137,6 @@ nfs_file_release(struct inode *inode, struct file *filp)
 			dentry->d_parent->d_name.name,
 			dentry->d_name.name);
 
-	/* Ensure that dirty pages are flushed out with the right creds */
-	if (filp->f_mode & FMODE_WRITE)
-		nfs_wb_all(dentry->d_inode);
 	nfs_inc_stats(inode, NFSIOS_VFSRELEASE);
 	return nfs_release(inode, filp);
 }
@@ -235,7 +228,6 @@ nfs_file_flush(struct file *file, fl_owner_t id)
 	struct nfs_open_context *ctx = nfs_file_open_context(file);
 	struct dentry	*dentry = file->f_path.dentry;
 	struct inode	*inode = dentry->d_inode;
-	int		status;
 
 	dprintk("NFS: flush(%s/%s)\n",
 			dentry->d_parent->d_name.name,
@@ -245,11 +237,8 @@ nfs_file_flush(struct file *file, fl_owner_t id)
 		return 0;
 	nfs_inc_stats(inode, NFSIOS_VFSFLUSH);
 
-	/* Ensure that data+attribute caches are up to date after close() */
-	status = nfs_do_fsync(ctx, inode);
-	if (!status)
-		nfs_revalidate_inode(NFS_SERVER(inode), inode);
-	return status;
+	/* Flush writes to the server and return any errors */
+	return nfs_do_fsync(ctx, inode);
 }
 
 static ssize_t
@@ -304,11 +293,13 @@ nfs_file_mmap(struct file * file, struct vm_area_struct * vma)
 	dprintk("NFS: mmap(%s/%s)\n",
 		dentry->d_parent->d_name.name, dentry->d_name.name);
 
-	status = nfs_revalidate_mapping(inode, file->f_mapping);
+	/* Note: generic_file_mmap() returns ENOSYS on nommu systems
+	 *       so we call that before revalidating the mapping
+	 */
+	status = generic_file_mmap(file, vma);
 	if (!status) {
 		vma->vm_ops = &nfs_file_vm_ops;
-		vma->vm_flags |= VM_CAN_NONLINEAR;
-		file_accessed(file);
+		status = nfs_revalidate_mapping(inode, file->f_mapping);
 	}
 	return status;
 }
@@ -354,6 +345,15 @@ static int nfs_write_begin(struct file *file, struct address_space *mapping,
 		file->f_path.dentry->d_name.name,
 		mapping->host->i_ino, len, (long long) pos);
 
+	/*
+	 * Prevent starvation issues if someone is doing a consistency
+	 * sync-to-disk
+	 */
+	ret = wait_on_bit(&NFS_I(mapping->host)->flags, NFS_INO_FLUSHING,
+			nfs_wait_bit_killable, TASK_KILLABLE);
+	if (ret)
+		return ret;
+
 	page = grab_cache_page_write_begin(mapping, index, flags);
 	if (!page)
 		return -ENOMEM;
diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index b7c9b2d..46177cb 100644
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -156,7 +156,7 @@ int nfs4_path_walk(struct nfs_server *server,
 		return ret;
 	}
 
-	if (fattr.type != NFDIR) {
+	if (!S_ISDIR(fattr.mode)) {
 		printk(KERN_ERR "nfs4_get_root:"
 		       " getroot encountered non-directory\n");
 		return -ENOTDIR;
@@ -213,7 +213,7 @@ eat_dot_dir:
 		return ret;
 	}
 
-	if (fattr.type != NFDIR) {
+	if (!S_ISDIR(fattr.mode)) {
 		printk(KERN_ERR "nfs4_get_root:"
 		       " lookupfh encountered non-directory\n");
 		return -ENOTDIR;
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 0c38168..a834d1d 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -66,6 +66,18 @@ nfs_fattr_to_ino_t(struct nfs_fattr *fattr)
 }
 
 /**
+ * nfs_wait_bit_killable - helper for functions that are sleeping on bit locks
+ * @word: long word containing the bit lock
+ */
+int nfs_wait_bit_killable(void *word)
+{
+	if (fatal_signal_pending(current))
+		return -ERESTARTSYS;
+	schedule();
+	return 0;
+}
+
+/**
  * nfs_compat_user_ino64 - returns the user-visible inode number
  * @fileid: 64-bit fileid
  *
@@ -249,13 +261,10 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
 	struct inode *inode = ERR_PTR(-ENOENT);
 	unsigned long hash;
 
-	if ((fattr->valid & NFS_ATTR_FATTR) == 0)
+	if ((fattr->valid & NFS_ATTR_FATTR_FILEID) == 0)
 		goto out_no_inode;
-
-	if (!fattr->nlink) {
-		printk("NFS: Buggy server - nlink == 0!\n");
+	if ((fattr->valid & NFS_ATTR_FATTR_TYPE) == 0)
 		goto out_no_inode;
-	}
 
 	hash = nfs_fattr_to_ino_t(fattr);
 
@@ -291,7 +300,8 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
 			    && fattr->size <= NFS_LIMIT_READDIRPLUS)
 				set_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags);
 			/* Deal with crossing mountpoints */
-			if (!nfs_fsid_equal(&NFS_SB(sb)->fsid, &fattr->fsid)) {
+			if ((fattr->valid & NFS_ATTR_FATTR_FSID)
+					&& !nfs_fsid_equal(&NFS_SB(sb)->fsid, &fattr->fsid)) {
 				if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)
 					inode->i_op = &nfs_referral_inode_operations;
 				else
@@ -304,28 +314,45 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
 		else
 			init_special_inode(inode, inode->i_mode, fattr->rdev);
 
+		memset(&inode->i_atime, 0, sizeof(inode->i_atime));
+		memset(&inode->i_mtime, 0, sizeof(inode->i_mtime));
+		memset(&inode->i_ctime, 0, sizeof(inode->i_ctime));
+		nfsi->change_attr = 0;
+		inode->i_size = 0;
+		inode->i_nlink = 0;
+		inode->i_uid = -2;
+		inode->i_gid = -2;
+		inode->i_blocks = 0;
+		memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf));
+
 		nfsi->read_cache_jiffies = fattr->time_start;
 		nfsi->attr_gencount = fattr->gencount;
-		inode->i_atime = fattr->atime;
-		inode->i_mtime = fattr->mtime;
-		inode->i_ctime = fattr->ctime;
-		if (fattr->valid & NFS_ATTR_FATTR_V4)
+		if (fattr->valid & NFS_ATTR_FATTR_ATIME)
+			inode->i_atime = fattr->atime;
+		if (fattr->valid & NFS_ATTR_FATTR_MTIME)
+			inode->i_mtime = fattr->mtime;
+		if (fattr->valid & NFS_ATTR_FATTR_CTIME)
+			inode->i_ctime = fattr->ctime;
+		if (fattr->valid & NFS_ATTR_FATTR_CHANGE)
 			nfsi->change_attr = fattr->change_attr;
-		inode->i_size = nfs_size_to_loff_t(fattr->size);
-		inode->i_nlink = fattr->nlink;
-		inode->i_uid = fattr->uid;
-		inode->i_gid = fattr->gid;
-		if (fattr->valid & (NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4)) {
+		if (fattr->valid & NFS_ATTR_FATTR_SIZE)
+			inode->i_size = nfs_size_to_loff_t(fattr->size);
+		if (fattr->valid & NFS_ATTR_FATTR_NLINK)
+			inode->i_nlink = fattr->nlink;
+		if (fattr->valid & NFS_ATTR_FATTR_OWNER)
+			inode->i_uid = fattr->uid;
+		if (fattr->valid & NFS_ATTR_FATTR_GROUP)
+			inode->i_gid = fattr->gid;
+		if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED)
+			inode->i_blocks = fattr->du.nfs2.blocks;
+		if (fattr->valid & NFS_ATTR_FATTR_SPACE_USED) {
 			/*
 			 * report the blocks in 512byte units
 			 */
 			inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used);
-		} else {
-			inode->i_blocks = fattr->du.nfs2.blocks;
 		}
 		nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
 		nfsi->attrtimeo_timestamp = now;
-		memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf));
 		nfsi->access_cache = RB_ROOT;
 
 		unlock_new_inode(inode);
@@ -514,6 +541,32 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
 	return err;
 }
 
+/**
+ * nfs_close_context - Common close_context() routine NFSv2/v3
+ * @ctx: pointer to context
+ * @is_sync: is this a synchronous close
+ *
+ * always ensure that the attributes are up to date if we're mounted
+ * with close-to-open semantics
+ */
+void nfs_close_context(struct nfs_open_context *ctx, int is_sync)
+{
+	struct inode *inode;
+	struct nfs_server *server;
+
+	if (!(ctx->mode & FMODE_WRITE))
+		return;
+	if (!is_sync)
+		return;
+	inode = ctx->path.dentry->d_inode;
+	if (!list_empty(&NFS_I(inode)->open_files))
+		return;
+	server = NFS_SERVER(inode);
+	if (server->flags & NFS_MOUNT_NOCTO)
+		return;
+	nfs_revalidate_inode(server, inode);
+}
+
 static struct nfs_open_context *alloc_nfs_open_context(struct vfsmount *mnt, struct dentry *dentry, struct rpc_cred *cred)
 {
 	struct nfs_open_context *ctx;
@@ -540,24 +593,15 @@ struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx)
 	return ctx;
 }
 
-static void __put_nfs_open_context(struct nfs_open_context *ctx, int wait)
+static void __put_nfs_open_context(struct nfs_open_context *ctx, int is_sync)
 {
-	struct inode *inode;
-
-	if (ctx == NULL)
-		return;
+	struct inode *inode = ctx->path.dentry->d_inode;
 
-	inode = ctx->path.dentry->d_inode;
 	if (!atomic_dec_and_lock(&ctx->count, &inode->i_lock))
 		return;
 	list_del(&ctx->list);
 	spin_unlock(&inode->i_lock);
-	if (ctx->state != NULL) {
-		if (wait)
-			nfs4_close_sync(&ctx->path, ctx->state, ctx->mode);
-		else
-			nfs4_close_state(&ctx->path, ctx->state, ctx->mode);
-	}
+	NFS_PROTO(inode)->close_context(ctx, is_sync);
 	if (ctx->cred != NULL)
 		put_rpccred(ctx->cred);
 	path_put(&ctx->path);
@@ -670,9 +714,6 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
 	if (NFS_STALE(inode))
 		goto out;
 
-	if (NFS_STALE(inode))
-		goto out;
-
 	nfs_inc_stats(inode, NFSIOS_INODEREVALIDATE);
 	status = NFS_PROTO(inode)->getattr(server, NFS_FH(inode), &fattr);
 	if (status != 0) {
@@ -815,25 +856,31 @@ static void nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr *fattr)
 {
 	struct nfs_inode *nfsi = NFS_I(inode);
 
-	if ((fattr->valid & NFS_ATTR_WCC_V4) != 0 &&
-			nfsi->change_attr == fattr->pre_change_attr) {
+	if ((fattr->valid & NFS_ATTR_FATTR_PRECHANGE)
+			&& (fattr->valid & NFS_ATTR_FATTR_CHANGE)
+			&& nfsi->change_attr == fattr->pre_change_attr) {
 		nfsi->change_attr = fattr->change_attr;
 		if (S_ISDIR(inode->i_mode))
 			nfsi->cache_validity |= NFS_INO_INVALID_DATA;
 	}
 	/* If we have atomic WCC data, we may update some attributes */
-	if ((fattr->valid & NFS_ATTR_WCC) != 0) {
-		if (timespec_equal(&inode->i_ctime, &fattr->pre_ctime))
+	if ((fattr->valid & NFS_ATTR_FATTR_PRECTIME)
+			&& (fattr->valid & NFS_ATTR_FATTR_CTIME)
+			&& timespec_equal(&inode->i_ctime, &fattr->pre_ctime))
 			memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime));
-		if (timespec_equal(&inode->i_mtime, &fattr->pre_mtime)) {
+
+	if ((fattr->valid & NFS_ATTR_FATTR_PREMTIME)
+			&& (fattr->valid & NFS_ATTR_FATTR_MTIME)
+			&& timespec_equal(&inode->i_mtime, &fattr->pre_mtime)) {
 			memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime));
 			if (S_ISDIR(inode->i_mode))
 				nfsi->cache_validity |= NFS_INO_INVALID_DATA;
-		}
-		if (i_size_read(inode) == nfs_size_to_loff_t(fattr->pre_size) &&
-		    nfsi->npages == 0)
-			i_size_write(inode, nfs_size_to_loff_t(fattr->size));
 	}
+	if ((fattr->valid & NFS_ATTR_FATTR_PRESIZE)
+			&& (fattr->valid & NFS_ATTR_FATTR_SIZE)
+			&& i_size_read(inode) == nfs_size_to_loff_t(fattr->pre_size)
+			&& nfsi->npages == 0)
+			i_size_write(inode, nfs_size_to_loff_t(fattr->size));
 }
 
 /**
@@ -853,35 +900,39 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
 
 
 	/* Has the inode gone and changed behind our back? */
-	if (nfsi->fileid != fattr->fileid
-			|| (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT)) {
+	if ((fattr->valid & NFS_ATTR_FATTR_FILEID) && nfsi->fileid != fattr->fileid)
+		return -EIO;
+	if ((fattr->valid & NFS_ATTR_FATTR_TYPE) && (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT))
 		return -EIO;
-	}
 
-	if ((fattr->valid & NFS_ATTR_FATTR_V4) != 0 &&
+	if ((fattr->valid & NFS_ATTR_FATTR_CHANGE) != 0 &&
 			nfsi->change_attr != fattr->change_attr)
 		invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
 
 	/* Verify a few of the more important attributes */
-	if (!timespec_equal(&inode->i_mtime, &fattr->mtime))
+	if ((fattr->valid & NFS_ATTR_FATTR_MTIME) && !timespec_equal(&inode->i_mtime, &fattr->mtime))
 		invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
 
-	cur_size = i_size_read(inode);
- 	new_isize = nfs_size_to_loff_t(fattr->size);
-	if (cur_size != new_isize && nfsi->npages == 0)
-		invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
+	if (fattr->valid & NFS_ATTR_FATTR_SIZE) {
+		cur_size = i_size_read(inode);
+		new_isize = nfs_size_to_loff_t(fattr->size);
+		if (cur_size != new_isize && nfsi->npages == 0)
+			invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
+	}
 
 	/* Have any file permissions changed? */
-	if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)
-			|| inode->i_uid != fattr->uid
-			|| inode->i_gid != fattr->gid)
+	if ((fattr->valid & NFS_ATTR_FATTR_MODE) && (inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO))
+		invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
+	if ((fattr->valid & NFS_ATTR_FATTR_OWNER) && inode->i_uid != fattr->uid)
+		invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
+	if ((fattr->valid & NFS_ATTR_FATTR_GROUP) && inode->i_gid != fattr->gid)
 		invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
 
 	/* Has the link count changed? */
-	if (inode->i_nlink != fattr->nlink)
+	if ((fattr->valid & NFS_ATTR_FATTR_NLINK) && inode->i_nlink != fattr->nlink)
 		invalid |= NFS_INO_INVALID_ATTR;
 
-	if (!timespec_equal(&inode->i_atime, &fattr->atime))
+	if ((fattr->valid & NFS_ATTR_FATTR_ATIME) && !timespec_equal(&inode->i_atime, &fattr->atime))
 		invalid |= NFS_INO_INVALID_ATIME;
 
 	if (invalid != 0)
@@ -893,11 +944,15 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
 
 static int nfs_ctime_need_update(const struct inode *inode, const struct nfs_fattr *fattr)
 {
+	if (!(fattr->valid & NFS_ATTR_FATTR_CTIME))
+		return 0;
 	return timespec_compare(&fattr->ctime, &inode->i_ctime) > 0;
 }
 
 static int nfs_size_need_update(const struct inode *inode, const struct nfs_fattr *fattr)
 {
+	if (!(fattr->valid & NFS_ATTR_FATTR_SIZE))
+		return 0;
 	return nfs_size_to_loff_t(fattr->size) > i_size_read(inode);
 }
 
@@ -1033,20 +1088,31 @@ int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fa
 	/* Don't do a WCC update if these attributes are already stale */
 	if ((fattr->valid & NFS_ATTR_FATTR) == 0 ||
 			!nfs_inode_attrs_need_update(inode, fattr)) {
-		fattr->valid &= ~(NFS_ATTR_WCC_V4|NFS_ATTR_WCC);
+		fattr->valid &= ~(NFS_ATTR_FATTR_PRECHANGE
+				| NFS_ATTR_FATTR_PRESIZE
+				| NFS_ATTR_FATTR_PREMTIME
+				| NFS_ATTR_FATTR_PRECTIME);
 		goto out_noforce;
 	}
-	if ((fattr->valid & NFS_ATTR_FATTR_V4) != 0 &&
-			(fattr->valid & NFS_ATTR_WCC_V4) == 0) {
+	if ((fattr->valid & NFS_ATTR_FATTR_CHANGE) != 0 &&
+			(fattr->valid & NFS_ATTR_FATTR_PRECHANGE) == 0) {
 		fattr->pre_change_attr = NFS_I(inode)->change_attr;
-		fattr->valid |= NFS_ATTR_WCC_V4;
+		fattr->valid |= NFS_ATTR_FATTR_PRECHANGE;
 	}
-	if ((fattr->valid & NFS_ATTR_FATTR) != 0 &&
-			(fattr->valid & NFS_ATTR_WCC) == 0) {
+	if ((fattr->valid & NFS_ATTR_FATTR_CTIME) != 0 &&
+			(fattr->valid & NFS_ATTR_FATTR_PRECTIME) == 0) {
 		memcpy(&fattr->pre_ctime, &inode->i_ctime, sizeof(fattr->pre_ctime));
+		fattr->valid |= NFS_ATTR_FATTR_PRECTIME;
+	}
+	if ((fattr->valid & NFS_ATTR_FATTR_MTIME) != 0 &&
+			(fattr->valid & NFS_ATTR_FATTR_PREMTIME) == 0) {
 		memcpy(&fattr->pre_mtime, &inode->i_mtime, sizeof(fattr->pre_mtime));
+		fattr->valid |= NFS_ATTR_FATTR_PREMTIME;
+	}
+	if ((fattr->valid & NFS_ATTR_FATTR_SIZE) != 0 &&
+			(fattr->valid & NFS_ATTR_FATTR_PRESIZE) == 0) {
 		fattr->pre_size = i_size_read(inode);
-		fattr->valid |= NFS_ATTR_WCC;
+		fattr->valid |= NFS_ATTR_FATTR_PRESIZE;
 	}
 out_noforce:
 	status = nfs_post_op_update_inode_locked(inode, fattr);
@@ -1078,18 +1144,18 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
 			__func__, inode->i_sb->s_id, inode->i_ino,
 			atomic_read(&inode->i_count), fattr->valid);
 
-	if (nfsi->fileid != fattr->fileid)
+	if ((fattr->valid & NFS_ATTR_FATTR_FILEID) && nfsi->fileid != fattr->fileid)
 		goto out_fileid;
 
 	/*
 	 * Make sure the inode's type hasn't changed.
 	 */
-	if ((inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT))
+	if ((fattr->valid & NFS_ATTR_FATTR_TYPE) && (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT))
 		goto out_changed;
 
 	server = NFS_SERVER(inode);
 	/* Update the fsid? */
-	if (S_ISDIR(inode->i_mode) &&
+	if (S_ISDIR(inode->i_mode) && (fattr->valid & NFS_ATTR_FATTR_FSID) &&
 			!nfs_fsid_equal(&server->fsid, &fattr->fsid) &&
 			!test_bit(NFS_INO_MOUNTPOINT, &nfsi->flags))
 		server->fsid = fattr->fsid;
@@ -1099,14 +1165,27 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
 	 */
 	nfsi->read_cache_jiffies = fattr->time_start;
 
-	nfsi->cache_validity &= ~(NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ATIME
-			| NFS_INO_REVAL_PAGECACHE);
+	if ((fattr->valid & NFS_ATTR_FATTR_CHANGE) || (fattr->valid & (NFS_ATTR_FATTR_MTIME|NFS_ATTR_FATTR_CTIME)))
+	    nfsi->cache_validity &= ~(NFS_INO_INVALID_ATTR
+		    | NFS_INO_INVALID_ATIME
+		    | NFS_INO_REVAL_PAGECACHE);
 
 	/* Do atomic weak cache consistency updates */
 	nfs_wcc_update_inode(inode, fattr);
 
 	/* More cache consistency checks */
-	if (!(fattr->valid & NFS_ATTR_FATTR_V4)) {
+	if (fattr->valid & NFS_ATTR_FATTR_CHANGE) {
+		if (nfsi->change_attr != fattr->change_attr) {
+			dprintk("NFS: change_attr change on server for file %s/%ld\n",
+					inode->i_sb->s_id, inode->i_ino);
+			invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+			if (S_ISDIR(inode->i_mode))
+				nfs_force_lookup_revalidate(inode);
+			nfsi->change_attr = fattr->change_attr;
+		}
+	}
+
+	if (fattr->valid & NFS_ATTR_FATTR_MTIME) {
 		/* NFSv2/v3: Check if the mtime agrees */
 		if (!timespec_equal(&inode->i_mtime, &fattr->mtime)) {
 			dprintk("NFS: mtime change on server for file %s/%ld\n",
@@ -1114,59 +1193,80 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
 			invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
 			if (S_ISDIR(inode->i_mode))
 				nfs_force_lookup_revalidate(inode);
+			memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime));
 		}
+	}
+	if (fattr->valid & NFS_ATTR_FATTR_CTIME) {
 		/* If ctime has changed we should definitely clear access+acl caches */
-		if (!timespec_equal(&inode->i_ctime, &fattr->ctime))
+		if (!timespec_equal(&inode->i_ctime, &fattr->ctime)) {
 			invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
-	} else if (nfsi->change_attr != fattr->change_attr) {
-		dprintk("NFS: change_attr change on server for file %s/%ld\n",
-				inode->i_sb->s_id, inode->i_ino);
-		invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
-		if (S_ISDIR(inode->i_mode))
-			nfs_force_lookup_revalidate(inode);
+			/* and probably clear data for a directory too as utimes can cause
+			 * havoc with our cache.
+			 */
+			if (S_ISDIR(inode->i_mode)) {
+				invalid |= NFS_INO_INVALID_DATA;
+				nfs_force_lookup_revalidate(inode);
+			}
+			memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime));
+		}
 	}
 
 	/* Check if our cached file size is stale */
- 	new_isize = nfs_size_to_loff_t(fattr->size);
-	cur_isize = i_size_read(inode);
-	if (new_isize != cur_isize) {
-		/* Do we perhaps have any outstanding writes, or has
-		 * the file grown beyond our last write? */
-		if (nfsi->npages == 0 || new_isize > cur_isize) {
-			i_size_write(inode, new_isize);
-			invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
+	if (fattr->valid & NFS_ATTR_FATTR_SIZE) {
+		new_isize = nfs_size_to_loff_t(fattr->size);
+		cur_isize = i_size_read(inode);
+		if (new_isize != cur_isize) {
+			/* Do we perhaps have any outstanding writes, or has
+			 * the file grown beyond our last write? */
+			if (nfsi->npages == 0 || new_isize > cur_isize) {
+				i_size_write(inode, new_isize);
+				invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
+			}
+			dprintk("NFS: isize change on server for file %s/%ld\n",
+					inode->i_sb->s_id, inode->i_ino);
 		}
-		dprintk("NFS: isize change on server for file %s/%ld\n",
-				inode->i_sb->s_id, inode->i_ino);
 	}
 
 
-	memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime));
-	memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime));
-	memcpy(&inode->i_atime, &fattr->atime, sizeof(inode->i_atime));
-	nfsi->change_attr = fattr->change_attr;
-
-	if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO) ||
-	    inode->i_uid != fattr->uid ||
-	    inode->i_gid != fattr->gid)
-		invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+	if (fattr->valid & NFS_ATTR_FATTR_ATIME)
+		memcpy(&inode->i_atime, &fattr->atime, sizeof(inode->i_atime));
 
-	if (inode->i_nlink != fattr->nlink)
-		invalid |= NFS_INO_INVALID_ATTR;
+	if (fattr->valid & NFS_ATTR_FATTR_MODE) {
+		if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)) {
+			invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+			inode->i_mode = fattr->mode;
+		}
+	}
+	if (fattr->valid & NFS_ATTR_FATTR_OWNER) {
+		if (inode->i_uid != fattr->uid) {
+			invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+			inode->i_uid = fattr->uid;
+		}
+	}
+	if (fattr->valid & NFS_ATTR_FATTR_GROUP) {
+		if (inode->i_gid != fattr->gid) {
+			invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+			inode->i_gid = fattr->gid;
+		}
+	}
 
-	inode->i_mode = fattr->mode;
-	inode->i_nlink = fattr->nlink;
-	inode->i_uid = fattr->uid;
-	inode->i_gid = fattr->gid;
+	if (fattr->valid & NFS_ATTR_FATTR_NLINK) {
+		if (inode->i_nlink != fattr->nlink) {
+			invalid |= NFS_INO_INVALID_ATTR;
+			if (S_ISDIR(inode->i_mode))
+				invalid |= NFS_INO_INVALID_DATA;
+			inode->i_nlink = fattr->nlink;
+		}
+	}
 
-	if (fattr->valid & (NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4)) {
+	if (fattr->valid & NFS_ATTR_FATTR_SPACE_USED) {
 		/*
 		 * report the blocks in 512byte units
 		 */
 		inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used);
- 	} else {
- 		inode->i_blocks = fattr->du.nfs2.blocks;
  	}
+	if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED)
+		inode->i_blocks = fattr->du.nfs2.blocks;
 
 	/* Update attrtimeo value if we're out of the unstable period */
 	if (invalid & NFS_INO_INVALID_ATTR) {
@@ -1274,7 +1374,6 @@ static void init_once(void *foo)
 	INIT_LIST_HEAD(&nfsi->access_cache_entry_lru);
 	INIT_LIST_HEAD(&nfsi->access_cache_inode_lru);
 	INIT_RADIX_TREE(&nfsi->nfs_page_tree, GFP_ATOMIC);
-	nfsi->ncommit = 0;
 	nfsi->npages = 0;
 	atomic_set(&nfsi->silly_count, 1);
 	INIT_HLIST_HEAD(&nfsi->silly_list);
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 340ede8..2041f68 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -152,6 +152,9 @@ extern __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus);
 extern struct rpc_procinfo nfs4_procedures[];
 #endif
 
+/* proc.c */
+void nfs_close_context(struct nfs_open_context *ctx, int is_sync);
+
 /* dir.c */
 extern int nfs_access_cache_shrinker(int nr_to_scan, gfp_t gfp_mask);
 
@@ -165,6 +168,7 @@ extern void nfs_clear_inode(struct inode *);
 extern void nfs4_clear_inode(struct inode *);
 #endif
 void nfs_zap_acl_cache(struct inode *inode);
+extern int nfs_wait_bit_killable(void *word);
 
 /* super.c */
 void nfs_parse_ip_address(char *, size_t, struct sockaddr *, size_t *);
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index 28bab67..c862c93 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -120,8 +120,8 @@ xdr_decode_time(__be32 *p, struct timespec *timep)
 static __be32 *
 xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr)
 {
-	u32 rdev;
-	fattr->type = (enum nfs_ftype) ntohl(*p++);
+	u32 rdev, type;
+	type = ntohl(*p++);
 	fattr->mode = ntohl(*p++);
 	fattr->nlink = ntohl(*p++);
 	fattr->uid = ntohl(*p++);
@@ -136,10 +136,9 @@ xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr)
 	p = xdr_decode_time(p, &fattr->atime);
 	p = xdr_decode_time(p, &fattr->mtime);
 	p = xdr_decode_time(p, &fattr->ctime);
-	fattr->valid |= NFS_ATTR_FATTR;
+	fattr->valid |= NFS_ATTR_FATTR_V2;
 	fattr->rdev = new_decode_dev(rdev);
-	if (fattr->type == NFCHR && rdev == NFS2_FIFO_DEV) {
-		fattr->type = NFFIFO;
+	if (type == NFCHR && rdev == NFS2_FIFO_DEV) {
 		fattr->mode = (fattr->mode & ~S_IFMT) | S_IFIFO;
 		fattr->rdev = 0;
 	}
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c
index c55be7a..b82fe68 100644
--- a/fs/nfs/nfs3proc.c
+++ b/fs/nfs/nfs3proc.c
@@ -834,4 +834,5 @@ const struct nfs_rpc_ops nfs_v3_clientops = {
 	.commit_done	= nfs3_commit_done,
 	.lock		= nfs3_proc_lock,
 	.clear_acl_cache = nfs3_forget_cached_acls,
+	.close_context	= nfs_close_context,
 };
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index 6cdeacf..e6a1932 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -91,19 +91,15 @@
 /*
  * Map file type to S_IFMT bits
  */
-static struct {
-	unsigned int	mode;
-	unsigned int	nfs2type;
-} nfs_type2fmt[] = {
-      { 0,		NFNON	},
-      { S_IFREG,	NFREG	},
-      { S_IFDIR,	NFDIR	},
-      { S_IFBLK,	NFBLK	},
-      { S_IFCHR,	NFCHR	},
-      { S_IFLNK,	NFLNK	},
-      { S_IFSOCK,	NFSOCK	},
-      { S_IFIFO,	NFFIFO	},
-      { 0,		NFBAD	}
+static const umode_t nfs_type2fmt[] = {
+	[NF3BAD] = 0,
+	[NF3REG] = S_IFREG,
+	[NF3DIR] = S_IFDIR,
+	[NF3BLK] = S_IFBLK,
+	[NF3CHR] = S_IFCHR,
+	[NF3LNK] = S_IFLNK,
+	[NF3SOCK] = S_IFSOCK,
+	[NF3FIFO] = S_IFIFO,
 };
 
 /*
@@ -148,13 +144,12 @@ static __be32 *
 xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr)
 {
 	unsigned int	type, major, minor;
-	int		fmode;
+	umode_t		fmode;
 
 	type = ntohl(*p++);
-	if (type >= NF3BAD)
-		type = NF3BAD;
-	fmode = nfs_type2fmt[type].mode;
-	fattr->type = nfs_type2fmt[type].nfs2type;
+	if (type > NF3FIFO)
+		type = NF3NON;
+	fmode = nfs_type2fmt[type];
 	fattr->mode = (ntohl(*p++) & ~S_IFMT) | fmode;
 	fattr->nlink = ntohl(*p++);
 	fattr->uid = ntohl(*p++);
@@ -177,7 +172,7 @@ xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr)
 	p = xdr_decode_time3(p, &fattr->ctime);
 
 	/* Update the mode bits */
-	fattr->valid |= (NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3);
+	fattr->valid |= NFS_ATTR_FATTR_V3;
 	return p;
 }
 
@@ -233,7 +228,9 @@ xdr_decode_wcc_attr(__be32 *p, struct nfs_fattr *fattr)
 	p = xdr_decode_hyper(p, &fattr->pre_size);
 	p = xdr_decode_time3(p, &fattr->pre_mtime);
 	p = xdr_decode_time3(p, &fattr->pre_ctime);
-	fattr->valid |= NFS_ATTR_WCC;
+	fattr->valid |= NFS_ATTR_FATTR_PRESIZE
+		| NFS_ATTR_FATTR_PREMTIME
+		| NFS_ATTR_FATTR_PRECTIME;
 	return p;
 }
 
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 8dde84b..97baccc 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -193,14 +193,6 @@ static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dent
 	kunmap_atomic(start, KM_USER0);
 }
 
-static int nfs4_wait_bit_killable(void *word)
-{
-	if (fatal_signal_pending(current))
-		return -ERESTARTSYS;
-	schedule();
-	return 0;
-}
-
 static int nfs4_wait_clnt_recover(struct nfs_client *clp)
 {
 	int res;
@@ -208,7 +200,7 @@ static int nfs4_wait_clnt_recover(struct nfs_client *clp)
 	might_sleep();
 
 	res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING,
-			nfs4_wait_bit_killable, TASK_KILLABLE);
+			nfs_wait_bit_killable, TASK_KILLABLE);
 	return res;
 }
 
@@ -1439,7 +1431,7 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
 	if (calldata->arg.seqid == NULL)
 		goto out_free_calldata;
 	calldata->arg.fmode = 0;
-	calldata->arg.bitmask = server->attr_bitmask;
+	calldata->arg.bitmask = server->cache_consistency_bitmask;
 	calldata->res.fattr = &calldata->fattr;
 	calldata->res.seqid = calldata->arg.seqid;
 	calldata->res.server = server;
@@ -1580,6 +1572,15 @@ out_drop:
 	return 0;
 }
 
+void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
+{
+	if (ctx->state == NULL)
+		return;
+	if (is_sync)
+		nfs4_close_sync(&ctx->path, ctx->state, ctx->mode);
+	else
+		nfs4_close_state(&ctx->path, ctx->state, ctx->mode);
+}
 
 static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
 {
@@ -1600,6 +1601,9 @@ static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *f
 			server->caps |= NFS_CAP_HARDLINKS;
 		if (res.has_symlinks != 0)
 			server->caps |= NFS_CAP_SYMLINKS;
+		memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
+		server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
+		server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
 		server->acl_bitmask = res.acl_bitmask;
 	}
 	return status;
@@ -2079,7 +2083,7 @@ static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
 	struct nfs_removeargs *args = msg->rpc_argp;
 	struct nfs_removeres *res = msg->rpc_resp;
 
-	args->bitmask = server->attr_bitmask;
+	args->bitmask = server->cache_consistency_bitmask;
 	res->server = server;
 	msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
 }
@@ -2323,7 +2327,7 @@ static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
 		.pages = &page,
 		.pgbase = 0,
 		.count = count,
-		.bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask,
+		.bitmask = NFS_SERVER(dentry->d_inode)->cache_consistency_bitmask,
 	};
 	struct nfs4_readdir_res res;
 	struct rpc_message msg = {
@@ -2552,7 +2556,7 @@ static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_messag
 {
 	struct nfs_server *server = NFS_SERVER(data->inode);
 
-	data->args.bitmask = server->attr_bitmask;
+	data->args.bitmask = server->cache_consistency_bitmask;
 	data->res.server = server;
 	data->timestamp   = jiffies;
 
@@ -2575,7 +2579,7 @@ static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_messa
 {
 	struct nfs_server *server = NFS_SERVER(data->inode);
 	
-	data->args.bitmask = server->attr_bitmask;
+	data->args.bitmask = server->cache_consistency_bitmask;
 	data->res.server = server;
 	msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
 }
@@ -3678,6 +3682,19 @@ ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen)
 	return len;
 }
 
+static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr)
+{
+	if (!((fattr->valid & NFS_ATTR_FATTR_FILEID) &&
+		(fattr->valid & NFS_ATTR_FATTR_FSID) &&
+		(fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)))
+		return;
+
+	fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
+		NFS_ATTR_FATTR_NLINK;
+	fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
+	fattr->nlink = 2;
+}
+
 int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
 		struct nfs4_fs_locations *fs_locations, struct page *page)
 {
@@ -3704,6 +3721,7 @@ int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
 	fs_locations->server = server;
 	fs_locations->nlocations = 0;
 	status = rpc_call_sync(server->client, &msg, 0);
+	nfs_fixup_referral_attributes(&fs_locations->fattr);
 	dprintk("%s: returned status = %d\n", __func__, status);
 	return status;
 }
@@ -3767,6 +3785,7 @@ const struct nfs_rpc_ops nfs_v4_clientops = {
 	.commit_done	= nfs4_commit_done,
 	.lock		= nfs4_proc_lock,
 	.clear_acl_cache = nfs4_zap_acl_attr,
+	.close_context  = nfs4_close_context,
 };
 
 /*
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 2022fe47..0298e90 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -62,8 +62,14 @@ static LIST_HEAD(nfs4_clientid_list);
 
 static int nfs4_init_client(struct nfs_client *clp, struct rpc_cred *cred)
 {
-	int status = nfs4_proc_setclientid(clp, NFS4_CALLBACK,
-			nfs_callback_tcpport, cred);
+	unsigned short port;
+	int status;
+
+	port = nfs_callback_tcpport;
+	if (clp->cl_addr.ss_family == AF_INET6)
+		port = nfs_callback_tcpport6;
+
+	status = nfs4_proc_setclientid(clp, NFS4_CALLBACK, port, cred);
 	if (status == 0)
 		status = nfs4_proc_setclientid_confirm(clp, cred);
 	if (status == 0)
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index d1e4c8f..1690f0e 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -522,20 +522,17 @@ static int nfs4_stat_to_errno(int);
 				 decode_lookup_maxsz + \
 				 decode_fs_locations_maxsz)
 
-static struct {
-	unsigned int	mode;
-	unsigned int	nfs2type;
-} nfs_type2fmt[] = {
-	{ 0,		NFNON	     },
-	{ S_IFREG,	NFREG	     },
-	{ S_IFDIR,	NFDIR	     },
-	{ S_IFBLK,	NFBLK	     },
-	{ S_IFCHR,	NFCHR	     },
-	{ S_IFLNK,	NFLNK	     },
-	{ S_IFSOCK,	NFSOCK	     },
-	{ S_IFIFO,	NFFIFO	     },
-	{ 0,		NFNON	     },
-	{ 0,		NFNON	     },
+static const umode_t nfs_type2fmt[] = {
+	[NF4BAD] = 0,
+	[NF4REG] = S_IFREG,
+	[NF4DIR] = S_IFDIR,
+	[NF4BLK] = S_IFBLK,
+	[NF4CHR] = S_IFCHR,
+	[NF4LNK] = S_IFLNK,
+	[NF4SOCK] = S_IFSOCK,
+	[NF4FIFO] = S_IFIFO,
+	[NF4ATTRDIR] = 0,
+	[NF4NAMEDATTR] = 0,
 };
 
 struct compound_hdr {
@@ -2160,6 +2157,7 @@ static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint3
 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
 {
 	__be32 *p;
+	int ret = 0;
 
 	*type = 0;
 	if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
@@ -2172,14 +2170,16 @@ static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *
 			return -EIO;
 		}
 		bitmap[0] &= ~FATTR4_WORD0_TYPE;
+		ret = NFS_ATTR_FATTR_TYPE;
 	}
-	dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type].nfs2type);
-	return 0;
+	dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
+	return ret;
 }
 
 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
 {
 	__be32 *p;
+	int ret = 0;
 
 	*change = 0;
 	if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
@@ -2188,15 +2188,17 @@ static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t
 		READ_BUF(8);
 		READ64(*change);
 		bitmap[0] &= ~FATTR4_WORD0_CHANGE;
+		ret = NFS_ATTR_FATTR_CHANGE;
 	}
 	dprintk("%s: change attribute=%Lu\n", __func__,
 			(unsigned long long)*change);
-	return 0;
+	return ret;
 }
 
 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
 {
 	__be32 *p;
+	int ret = 0;
 
 	*size = 0;
 	if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
@@ -2205,9 +2207,10 @@ static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *
 		READ_BUF(8);
 		READ64(*size);
 		bitmap[0] &= ~FATTR4_WORD0_SIZE;
+		ret = NFS_ATTR_FATTR_SIZE;
 	}
 	dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
-	return 0;
+	return ret;
 }
 
 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
@@ -2245,6 +2248,7 @@ static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap,
 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
 {
 	__be32 *p;
+	int ret = 0;
 
 	fsid->major = 0;
 	fsid->minor = 0;
@@ -2255,11 +2259,12 @@ static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs
 		READ64(fsid->major);
 		READ64(fsid->minor);
 		bitmap[0] &= ~FATTR4_WORD0_FSID;
+		ret = NFS_ATTR_FATTR_FSID;
 	}
 	dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
 			(unsigned long long)fsid->major,
 			(unsigned long long)fsid->minor);
-	return 0;
+	return ret;
 }
 
 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
@@ -2297,6 +2302,7 @@ static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint
 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
 {
 	__be32 *p;
+	int ret = 0;
 
 	*fileid = 0;
 	if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
@@ -2305,14 +2311,16 @@ static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t
 		READ_BUF(8);
 		READ64(*fileid);
 		bitmap[0] &= ~FATTR4_WORD0_FILEID;
+		ret = NFS_ATTR_FATTR_FILEID;
 	}
 	dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
-	return 0;
+	return ret;
 }
 
 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
 {
 	__be32 *p;
+	int ret = 0;
 
 	*fileid = 0;
 	if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
@@ -2321,9 +2329,10 @@ static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitma
 		READ_BUF(8);
 		READ64(*fileid);
 		bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
+		ret = NFS_ATTR_FATTR_FILEID;
 	}
 	dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
-	return 0;
+	return ret;
 }
 
 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
@@ -2479,6 +2488,8 @@ static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, st
 		if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
 			res->nlocations++;
 	}
+	if (res->nlocations != 0)
+		status = NFS_ATTR_FATTR_V4_REFERRAL;
 out:
 	dprintk("%s: fs_locations done, error = %d\n", __func__, status);
 	return status;
@@ -2580,26 +2591,30 @@ static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32
 	return status;
 }
 
-static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
+static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
 {
+	uint32_t tmp;
 	__be32 *p;
+	int ret = 0;
 
 	*mode = 0;
 	if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
 		return -EIO;
 	if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
 		READ_BUF(4);
-		READ32(*mode);
-		*mode &= ~S_IFMT;
+		READ32(tmp);
+		*mode = tmp & ~S_IFMT;
 		bitmap[1] &= ~FATTR4_WORD1_MODE;
+		ret = NFS_ATTR_FATTR_MODE;
 	}
 	dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
-	return 0;
+	return ret;
 }
 
 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
 {
 	__be32 *p;
+	int ret = 0;
 
 	*nlink = 1;
 	if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
@@ -2608,15 +2623,17 @@ static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t
 		READ_BUF(4);
 		READ32(*nlink);
 		bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
+		ret = NFS_ATTR_FATTR_NLINK;
 	}
 	dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
-	return 0;
+	return ret;
 }
 
 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *uid)
 {
 	uint32_t len;
 	__be32 *p;
+	int ret = 0;
 
 	*uid = -2;
 	if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
@@ -2626,7 +2643,9 @@ static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nf
 		READ32(len);
 		READ_BUF(len);
 		if (len < XDR_MAX_NETOBJ) {
-			if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
+			if (nfs_map_name_to_uid(clp, (char *)p, len, uid) == 0)
+				ret = NFS_ATTR_FATTR_OWNER;
+			else
 				dprintk("%s: nfs_map_name_to_uid failed!\n",
 						__func__);
 		} else
@@ -2635,13 +2654,14 @@ static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nf
 		bitmap[1] &= ~FATTR4_WORD1_OWNER;
 	}
 	dprintk("%s: uid=%d\n", __func__, (int)*uid);
-	return 0;
+	return ret;
 }
 
 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *gid)
 {
 	uint32_t len;
 	__be32 *p;
+	int ret = 0;
 
 	*gid = -2;
 	if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
@@ -2651,7 +2671,9 @@ static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nf
 		READ32(len);
 		READ_BUF(len);
 		if (len < XDR_MAX_NETOBJ) {
-			if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
+			if (nfs_map_group_to_gid(clp, (char *)p, len, gid) == 0)
+				ret = NFS_ATTR_FATTR_GROUP;
+			else
 				dprintk("%s: nfs_map_group_to_gid failed!\n",
 						__func__);
 		} else
@@ -2660,13 +2682,14 @@ static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nf
 		bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
 	}
 	dprintk("%s: gid=%d\n", __func__, (int)*gid);
-	return 0;
+	return ret;
 }
 
 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
 {
 	uint32_t major = 0, minor = 0;
 	__be32 *p;
+	int ret = 0;
 
 	*rdev = MKDEV(0,0);
 	if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
@@ -2681,9 +2704,10 @@ static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rde
 		if (MAJOR(tmp) == major && MINOR(tmp) == minor)
 			*rdev = tmp;
 		bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
+		ret = NFS_ATTR_FATTR_RDEV;
 	}
 	dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
-	return 0;
+	return ret;
 }
 
 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
@@ -2740,6 +2764,7 @@ static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uin
 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
 {
 	__be32 *p;
+	int ret = 0;
 
 	*used = 0;
 	if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
@@ -2748,10 +2773,11 @@ static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint
 		READ_BUF(8);
 		READ64(*used);
 		bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
+		ret = NFS_ATTR_FATTR_SPACE_USED;
 	}
 	dprintk("%s: space used=%Lu\n", __func__,
 			(unsigned long long)*used);
-	return 0;
+	return ret;
 }
 
 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
@@ -2778,6 +2804,8 @@ static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, str
 		return -EIO;
 	if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
 		status = decode_attr_time(xdr, time);
+		if (status == 0)
+			status = NFS_ATTR_FATTR_ATIME;
 		bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
 	}
 	dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
@@ -2794,6 +2822,8 @@ static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, s
 		return -EIO;
 	if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
 		status = decode_attr_time(xdr, time);
+		if (status == 0)
+			status = NFS_ATTR_FATTR_CTIME;
 		bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
 	}
 	dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
@@ -2810,6 +2840,8 @@ static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, str
 		return -EIO;
 	if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
 		status = decode_attr_time(xdr, time);
+		if (status == 0)
+			status = NFS_ATTR_FATTR_MTIME;
 		bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
 	}
 	dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
@@ -2994,63 +3026,116 @@ static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, cons
 	uint32_t attrlen,
 		 bitmap[2] = {0},
 		 type;
-	int status, fmode = 0;
+	int status;
+	umode_t fmode = 0;
 	uint64_t fileid;
 
-	if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
-		goto xdr_error;
-	if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
+	status = decode_op_hdr(xdr, OP_GETATTR);
+	if (status < 0)
 		goto xdr_error;
 
-	fattr->bitmap[0] = bitmap[0];
-	fattr->bitmap[1] = bitmap[1];
+	status = decode_attr_bitmap(xdr, bitmap);
+	if (status < 0)
+		goto xdr_error;
 
-	if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
+	status = decode_attr_length(xdr, &attrlen, &savep);
+	if (status < 0)
 		goto xdr_error;
 
 
-	if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
+	status = decode_attr_type(xdr, bitmap, &type);
+	if (status < 0)
 		goto xdr_error;
-	fattr->type = nfs_type2fmt[type].nfs2type;
-	fmode = nfs_type2fmt[type].mode;
+	fattr->mode = 0;
+	if (status != 0) {
+		fattr->mode |= nfs_type2fmt[type];
+		fattr->valid |= status;
+	}
 
-	if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
+	status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
+	if (status < 0)
 		goto xdr_error;
-	if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
+	fattr->valid |= status;
+
+	status = decode_attr_size(xdr, bitmap, &fattr->size);
+	if (status < 0)
 		goto xdr_error;
-	if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid)) != 0)
+	fattr->valid |= status;
+
+	status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
+	if (status < 0)
 		goto xdr_error;
-	if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
+	fattr->valid |= status;
+
+	status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
+	if (status < 0)
 		goto xdr_error;
-	if ((status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
+	fattr->valid |= status;
+
+	status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
 						struct nfs4_fs_locations,
-						fattr))) != 0)
+						fattr));
+	if (status < 0)
 		goto xdr_error;
-	if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
+	fattr->valid |= status;
+
+	status = decode_attr_mode(xdr, bitmap, &fmode);
+	if (status < 0)
 		goto xdr_error;
-	fattr->mode |= fmode;
-	if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
+	if (status != 0) {
+		fattr->mode |= fmode;
+		fattr->valid |= status;
+	}
+
+	status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
+	if (status < 0)
 		goto xdr_error;
-	if ((status = decode_attr_owner(xdr, bitmap, server->nfs_client, &fattr->uid)) != 0)
+	fattr->valid |= status;
+
+	status = decode_attr_owner(xdr, bitmap, server->nfs_client, &fattr->uid);
+	if (status < 0)
 		goto xdr_error;
-	if ((status = decode_attr_group(xdr, bitmap, server->nfs_client, &fattr->gid)) != 0)
+	fattr->valid |= status;
+
+	status = decode_attr_group(xdr, bitmap, server->nfs_client, &fattr->gid);
+	if (status < 0)
 		goto xdr_error;
-	if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
+	fattr->valid |= status;
+
+	status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
+	if (status < 0)
 		goto xdr_error;
-	if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
+	fattr->valid |= status;
+
+	status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
+	if (status < 0)
 		goto xdr_error;
-	if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
+	fattr->valid |= status;
+
+	status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
+	if (status < 0)
 		goto xdr_error;
-	if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
+	fattr->valid |= status;
+
+	status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
+	if (status < 0)
 		goto xdr_error;
-	if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
+	fattr->valid |= status;
+
+	status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
+	if (status < 0)
 		goto xdr_error;
-	if ((status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid)) != 0)
+	fattr->valid |= status;
+
+	status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid);
+	if (status < 0)
 		goto xdr_error;
-	if (fattr->fileid == 0 && fileid != 0)
+	if (status != 0 && !(fattr->valid & status)) {
 		fattr->fileid = fileid;
-	if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
-		fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
+		fattr->valid |= status;
+	}
+
+	status = verify_attr_len(xdr, savep, attrlen);
 xdr_error:
 	dprintk("%s: xdr returned %d\n", __func__, -status);
 	return status;
@@ -4078,9 +4163,7 @@ static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_se
 	status = decode_setattr(&xdr, res);
 	if (status)
 		goto out;
-	status = decode_getfattr(&xdr, res->fattr, res->server);
-	if (status == NFS4ERR_DELAY)
-		status = 0;
+	decode_getfattr(&xdr, res->fattr, res->server);
 out:
 	return status;
 }
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index 7f07920..e297593 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -176,17 +176,6 @@ void nfs_release_request(struct nfs_page *req)
 	kref_put(&req->wb_kref, nfs_free_request);
 }
 
-static int nfs_wait_bit_killable(void *word)
-{
-	int ret = 0;
-
-	if (fatal_signal_pending(current))
-		ret = -ERESTARTSYS;
-	else
-		schedule();
-	return ret;
-}
-
 /**
  * nfs_wait_on_request - Wait for a request to complete.
  * @req: request to wait upon.
diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index 1934652..7be72d9 100644
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -663,4 +663,5 @@ const struct nfs_rpc_ops nfs_v2_clientops = {
 	.commit_setup	= nfs_proc_commit_setup,
 	.lock		= nfs_proc_lock,
 	.lock_check_bounds = nfs_lock_check_bounds,
+	.close_context	= nfs_close_context,
 };
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index d6686f4..0942fcb 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -1018,6 +1018,7 @@ static int nfs_parse_mount_options(char *raw,
 		case Opt_rdma:
 			mnt->flags |= NFS_MOUNT_TCP; /* for side protocols */
 			mnt->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
+			xprt_load_transport(p);
 			break;
 		case Opt_acl:
 			mnt->flags &= ~NFS_MOUNT_NOACL;
@@ -1205,12 +1206,14 @@ static int nfs_parse_mount_options(char *raw,
 				/* vector side protocols to TCP */
 				mnt->flags |= NFS_MOUNT_TCP;
 				mnt->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
+				xprt_load_transport(string);
 				break;
 			default:
 				errors++;
 				dfprintk(MOUNT, "NFS:   unrecognized "
 						"transport protocol\n");
 			}
+			kfree(string);
 			break;
 		case Opt_mountproto:
 			string = match_strdup(args);
@@ -1218,7 +1221,6 @@ static int nfs_parse_mount_options(char *raw,
 				goto out_nomem;
 			token = match_token(string,
 					    nfs_xprt_protocol_tokens, args);
-			kfree(string);
 
 			switch (token) {
 			case Opt_xprt_udp:
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 9f98458..e560a78 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -313,19 +313,34 @@ static int nfs_writepages_callback(struct page *page, struct writeback_control *
 int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc)
 {
 	struct inode *inode = mapping->host;
+	unsigned long *bitlock = &NFS_I(inode)->flags;
 	struct nfs_pageio_descriptor pgio;
 	int err;
 
+	/* Stop dirtying of new pages while we sync */
+	err = wait_on_bit_lock(bitlock, NFS_INO_FLUSHING,
+			nfs_wait_bit_killable, TASK_KILLABLE);
+	if (err)
+		goto out_err;
+
 	nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGES);
 
 	nfs_pageio_init_write(&pgio, inode, wb_priority(wbc));
 	err = write_cache_pages(mapping, wbc, nfs_writepages_callback, &pgio);
 	nfs_pageio_complete(&pgio);
+
+	clear_bit_unlock(NFS_INO_FLUSHING, bitlock);
+	smp_mb__after_clear_bit();
+	wake_up_bit(bitlock, NFS_INO_FLUSHING);
+
 	if (err < 0)
-		return err;
-	if (pgio.pg_error < 0)
-		return pgio.pg_error;
+		goto out_err;
+	err = pgio.pg_error;
+	if (err < 0)
+		goto out_err;
 	return 0;
+out_err:
+	return err;
 }
 
 /*
@@ -404,7 +419,6 @@ nfs_mark_request_commit(struct nfs_page *req)
 	struct nfs_inode *nfsi = NFS_I(inode);
 
 	spin_lock(&inode->i_lock);
-	nfsi->ncommit++;
 	set_bit(PG_CLEAN, &(req)->wb_flags);
 	radix_tree_tag_set(&nfsi->nfs_page_tree,
 			req->wb_index,
@@ -524,6 +538,12 @@ static void nfs_cancel_commit_list(struct list_head *head)
 }
 
 #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
+static int
+nfs_need_commit(struct nfs_inode *nfsi)
+{
+	return radix_tree_tagged(&nfsi->nfs_page_tree, NFS_PAGE_TAG_COMMIT);
+}
+
 /*
  * nfs_scan_commit - Scan an inode for commit requests
  * @inode: NFS inode to scan
@@ -538,16 +558,18 @@ static int
 nfs_scan_commit(struct inode *inode, struct list_head *dst, pgoff_t idx_start, unsigned int npages)
 {
 	struct nfs_inode *nfsi = NFS_I(inode);
-	int res = 0;
 
-	if (nfsi->ncommit != 0) {
-		res = nfs_scan_list(nfsi, dst, idx_start, npages,
-				NFS_PAGE_TAG_COMMIT);
-		nfsi->ncommit -= res;
-	}
-	return res;
+	if (!nfs_need_commit(nfsi))
+		return 0;
+
+	return nfs_scan_list(nfsi, dst, idx_start, npages, NFS_PAGE_TAG_COMMIT);
 }
 #else
+static inline int nfs_need_commit(struct nfs_inode *nfsi)
+{
+	return 0;
+}
+
 static inline int nfs_scan_commit(struct inode *inode, struct list_head *dst, pgoff_t idx_start, unsigned int npages)
 {
 	return 0;
@@ -820,7 +842,7 @@ static int nfs_write_rpcsetup(struct nfs_page *req,
 	data->args.stable  = NFS_UNSTABLE;
 	if (how & FLUSH_STABLE) {
 		data->args.stable = NFS_DATA_SYNC;
-		if (!NFS_I(inode)->ncommit)
+		if (!nfs_need_commit(NFS_I(inode)))
 			data->args.stable = NFS_FILE_SYNC;
 	}
 
@@ -1425,18 +1447,13 @@ static int nfs_write_mapping(struct address_space *mapping, int how)
 {
 	struct writeback_control wbc = {
 		.bdi = mapping->backing_dev_info,
-		.sync_mode = WB_SYNC_NONE,
+		.sync_mode = WB_SYNC_ALL,
 		.nr_to_write = LONG_MAX,
 		.range_start = 0,
 		.range_end = LLONG_MAX,
 		.for_writepages = 1,
 	};
-	int ret;
 
-	ret = __nfs_write_mapping(mapping, &wbc, how);
-	if (ret < 0)
-		return ret;
-	wbc.sync_mode = WB_SYNC_ALL;
 	return __nfs_write_mapping(mapping, &wbc, how);
 }
 
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 3d93b20..a4ed864 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -938,10 +938,12 @@ static ssize_t __write_ports(struct file *file, char *buf, size_t size)
 		char transport[16];
 		int port;
 		if (sscanf(buf, "%15s %4d", transport, &port) == 2) {
+			if (port < 1 || port > 65535)
+				return -EINVAL;
 			err = nfsd_create_serv();
 			if (!err) {
 				err = svc_create_xprt(nfsd_serv,
-						      transport, port,
+						      transport, PF_INET, port,
 						      SVC_SOCK_ANONYMOUS);
 				if (err == -ENOENT)
 					/* Give a reasonable perror msg for
@@ -960,7 +962,7 @@ static ssize_t __write_ports(struct file *file, char *buf, size_t size)
 		char transport[16];
 		int port;
 		if (sscanf(&buf[1], "%15s %4d", transport, &port) == 2) {
-			if (port == 0)
+			if (port < 1 || port > 65535)
 				return -EINVAL;
 			if (nfsd_serv) {
 				xprt = svc_find_xprt(nfsd_serv, transport,
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 07e4f5d..bc3567b 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -229,7 +229,6 @@ int nfsd_create_serv(void)
 
 	atomic_set(&nfsd_busy, 0);
 	nfsd_serv = svc_create_pooled(&nfsd_program, nfsd_max_blksize,
-				      AF_INET,
 				      nfsd_last_thread, nfsd, THIS_MODULE);
 	if (nfsd_serv == NULL)
 		err = -ENOMEM;
@@ -244,7 +243,7 @@ static int nfsd_init_socks(int port)
 	if (!list_empty(&nfsd_serv->sv_permsocks))
 		return 0;
 
-	error = svc_create_xprt(nfsd_serv, "udp", port,
+	error = svc_create_xprt(nfsd_serv, "udp", PF_INET, port,
 					SVC_SOCK_DEFAULTS);
 	if (error < 0)
 		return error;
@@ -253,7 +252,7 @@ static int nfsd_init_socks(int port)
 	if (error < 0)
 		return error;
 
-	error = svc_create_xprt(nfsd_serv, "tcp", port,
+	error = svc_create_xprt(nfsd_serv, "tcp", PF_INET, port,
 					SVC_SOCK_DEFAULTS);
 	if (error < 0)
 		return error;