Merge branch 'for-2.6.28' of git://linux-nfs.org/~bfields/linux

* 'for-2.6.28' of git://linux-nfs.org/~bfields/linux: (59 commits)
  svcrdma: Fix IRD/ORD polarity
  svcrdma: Update svc_rdma_send_error to use DMA LKEY
  svcrdma: Modify the RPC reply path to use FRMR when available
  svcrdma: Modify the RPC recv path to use FRMR when available
  svcrdma: Add support to svc_rdma_send to handle chained WR
  svcrdma: Modify post recv path to use local dma key
  svcrdma: Add a service to register a Fast Reg MR with the device
  svcrdma: Query device for Fast Reg support during connection setup
  svcrdma: Add FRMR get/put services
  NLM: Remove unused argument from svc_addsock() function
  NLM: Remove "proto" argument from lockd_up()
  NLM: Always start both UDP and TCP listeners
  lockd: Remove unused fields in the nlm_reboot structure
  lockd: Add helper to sanity check incoming NOTIFY requests
  lockd: change nlmclnt_grant() to take a "struct sockaddr *"
  lockd: Adjust nlmsvc_lookup_host() to accomodate AF_INET6 addresses
  lockd: Adjust nlmclnt_lookup_host() signature to accomodate non-AF_INET
  lockd: Support non-AF_INET addresses in nlm_lookup_host()
  NLM: Convert nlm_lookup_host() to use a single argument
  svcrdma: Add Fast Reg MR Data Types
  ...

fs/Kconfig

@@ -433,6 +433,14 @@ config FS_POSIX_ACL
 	bool
 	default n
 
+config FILE_LOCKING
+	bool "Enable POSIX file locking API" if EMBEDDED
+	default y
+	help
+	  This option enables standard file locking support, required
+          for filesystems like NFS and for the flock() system
+          call. Disabling this option saves about 11k.
+
 source "fs/xfs/Kconfig"
 source "fs/gfs2/Kconfig"
 
@@ -1779,6 +1787,28 @@ config SUNRPC_XPRT_RDMA
 
 	  If unsure, say N.
 
+config SUNRPC_REGISTER_V4
+	bool "Register local RPC services via rpcbind v4 (EXPERIMENTAL)"
+	depends on SUNRPC && EXPERIMENTAL
+	default n
+	help
+	  Sun added support for registering RPC services at an IPv6
+	  address by creating two new versions of the rpcbind protocol
+	  (RFC 1833).
+
+	  This option enables support in the kernel RPC server for
+	  registering kernel RPC services via version 4 of the rpcbind
+	  protocol.  If you enable this option, you must run a portmapper
+	  daemon that supports rpcbind protocol version 4.
+
+	  Serving NFS over IPv6 from knfsd (the kernel's NFS server)
+	  requires that you enable this option and use a portmapper that
+	  supports rpcbind version 4.
+
+	  If unsure, say N to get traditional behavior (register kernel
+	  RPC services using only rpcbind version 2).  Distributions
+	  using the legacy Linux portmapper daemon must say N here.
+
 config RPCSEC_GSS_KRB5
 	tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
 	depends on SUNRPC && EXPERIMENTAL

fs/Makefile

@@ -7,7 +7,7 @@
 
 obj-y :=	open.o read_write.o file_table.o super.o \
 		char_dev.o stat.o exec.o pipe.o namei.o fcntl.o \
-		ioctl.o readdir.o select.o fifo.o locks.o dcache.o inode.o \
+		ioctl.o readdir.o select.o fifo.o dcache.o inode.o \
 		attr.o bad_inode.o file.o filesystems.o namespace.o aio.o \
 		seq_file.o xattr.o libfs.o fs-writeback.o \
 		pnode.o drop_caches.o splice.o sync.o utimes.o \
@@ -27,6 +27,7 @@ obj-$(CONFIG_ANON_INODES)	+= anon_inodes.o
 obj-$(CONFIG_SIGNALFD)		+= signalfd.o
 obj-$(CONFIG_TIMERFD)		+= timerfd.o
 obj-$(CONFIG_EVENTFD)		+= eventfd.o
+obj-$(CONFIG_FILE_LOCKING)      += locks.o
 obj-$(CONFIG_COMPAT)		+= compat.o compat_ioctl.o
 
 nfsd-$(CONFIG_NFSD)		:= nfsctl.o

fs/lockd/Makefile

@@ -5,6 +5,6 @@
 obj-$(CONFIG_LOCKD) += lockd.o
 
 lockd-objs-y := clntlock.o clntproc.o host.o svc.o svclock.o svcshare.o \
-	        svcproc.o svcsubs.o mon.o xdr.o
+	        svcproc.o svcsubs.o mon.o xdr.o grace.o
 lockd-objs-$(CONFIG_LOCKD_V4) += xdr4.o svc4proc.o
 lockd-objs		      := $(lockd-objs-y)

fs/lockd/clntlock.c

@@ -54,14 +54,13 @@ struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init)
 	u32 nlm_version = (nlm_init->nfs_version == 2) ? 1 : 4;
 	int status;
 
-	status = lockd_up(nlm_init->protocol);
+	status = lockd_up();
 	if (status < 0)
 		return ERR_PTR(status);
 
-	host = nlmclnt_lookup_host((struct sockaddr_in *)nlm_init->address,
+	host = nlmclnt_lookup_host(nlm_init->address, nlm_init->addrlen,
 				   nlm_init->protocol, nlm_version,
-				   nlm_init->hostname,
-				   strlen(nlm_init->hostname));
+				   nlm_init->hostname);
 	if (host == NULL) {
 		lockd_down();
 		return ERR_PTR(-ENOLCK);
@@ -142,7 +141,7 @@ int nlmclnt_block(struct nlm_wait *block, struct nlm_rqst *req, long timeout)
 /*
  * The server lockd has called us back to tell us the lock was granted
  */
-__be32 nlmclnt_grant(const struct sockaddr_in *addr, const struct nlm_lock *lock)
+__be32 nlmclnt_grant(const struct sockaddr *addr, const struct nlm_lock *lock)
 {
 	const struct file_lock *fl = &lock->fl;
 	const struct nfs_fh *fh = &lock->fh;
@@ -166,7 +165,7 @@ __be32 nlmclnt_grant(const struct sockaddr_in *addr, const struct nlm_lock *lock
 		 */
 		if (fl_blocked->fl_u.nfs_fl.owner->pid != lock->svid)
 			continue;
-		if (!nlm_cmp_addr(&block->b_host->h_addr, 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;
@@ -216,7 +215,7 @@ reclaimer(void *ptr)
 	/* This one ensures that our parent doesn't terminate while the
 	 * reclaim is in progress */
 	lock_kernel();
-	lockd_up(0); /* note: this cannot fail as lockd is already running */
+	lockd_up();	/* note: this cannot fail as lockd is already running */
 
 	dprintk("lockd: reclaiming locks for host %s\n", host->h_name);
 

fs/lockd/grace.c

+/*
+ * Common code for control of lockd and nfsv4 grace periods.
+ */
+
+#include <linux/module.h>
+#include <linux/lockd/bind.h>
+
+static LIST_HEAD(grace_list);
+static DEFINE_SPINLOCK(grace_lock);
+
+/**
+ * locks_start_grace
+ * @lm: who this grace period is for
+ *
+ * A grace period is a period during which locks should not be given
+ * out.  Currently grace periods are only enforced by the two lock
+ * managers (lockd and nfsd), using the locks_in_grace() function to
+ * check when they are in a grace period.
+ *
+ * This function is called to start a grace period.
+ */
+void locks_start_grace(struct lock_manager *lm)
+{
+	spin_lock(&grace_lock);
+	list_add(&lm->list, &grace_list);
+	spin_unlock(&grace_lock);
+}
+EXPORT_SYMBOL_GPL(locks_start_grace);
+
+/**
+ * locks_end_grace
+ * @lm: who this grace period is for
+ *
+ * Call this function to state that the given lock manager is ready to
+ * resume regular locking.  The grace period will not end until all lock
+ * managers that called locks_start_grace() also call locks_end_grace().
+ * Note that callers count on it being safe to call this more than once,
+ * and the second call should be a no-op.
+ */
+void locks_end_grace(struct lock_manager *lm)
+{
+	spin_lock(&grace_lock);
+	list_del_init(&lm->list);
+	spin_unlock(&grace_lock);
+}
+EXPORT_SYMBOL_GPL(locks_end_grace);
+
+/**
+ * locks_in_grace
+ *
+ * Lock managers call this function to determine when it is OK for them
+ * to answer ordinary lock requests, and when they should accept only
+ * lock reclaims.
+ */
+int locks_in_grace(void)
+{
+	return !list_empty(&grace_list);
+}
+EXPORT_SYMBOL_GPL(locks_in_grace);

fs/lockd/mon.c

@@ -51,7 +51,7 @@ nsm_mon_unmon(struct nsm_handle *nsm, u32 proc, struct nsm_res *res)
 
 	memset(&args, 0, sizeof(args));
 	args.mon_name = nsm->sm_name;
-	args.addr = nsm->sm_addr.sin_addr.s_addr;
+	args.addr = nsm_addr_in(nsm)->sin_addr.s_addr;
 	args.prog = NLM_PROGRAM;
 	args.vers = 3;
 	args.proc = NLMPROC_NSM_NOTIFY;

fs/lockd/svc.c

@@ -51,7 +51,6 @@ static DEFINE_MUTEX(nlmsvc_mutex);
 static unsigned int		nlmsvc_users;
 static struct task_struct	*nlmsvc_task;
 static struct svc_rqst		*nlmsvc_rqst;
-int				nlmsvc_grace_period;
 unsigned long			nlmsvc_timeout;
 
 /*
@@ -85,27 +84,23 @@ static unsigned long get_lockd_grace_period(void)
 		return nlm_timeout * 5 * HZ;
 }
 
-unsigned long get_nfs_grace_period(void)
-{
-	unsigned long lockdgrace = get_lockd_grace_period();
-	unsigned long nfsdgrace = 0;
-
-	if (nlmsvc_ops)
-		nfsdgrace = nlmsvc_ops->get_grace_period();
-
-	return max(lockdgrace, nfsdgrace);
-}
-EXPORT_SYMBOL(get_nfs_grace_period);
+static struct lock_manager lockd_manager = {
+};
 
-static unsigned long set_grace_period(void)
+static void grace_ender(struct work_struct *not_used)
 {
-	nlmsvc_grace_period = 1;
-	return get_nfs_grace_period() + jiffies;
+	locks_end_grace(&lockd_manager);
 }
 
-static inline void clear_grace_period(void)
+static DECLARE_DELAYED_WORK(grace_period_end, grace_ender);
+
+static void set_grace_period(void)
 {
-	nlmsvc_grace_period = 0;
+	unsigned long grace_period = get_lockd_grace_period();
+
+	locks_start_grace(&lockd_manager);
+	cancel_delayed_work_sync(&grace_period_end);
+	schedule_delayed_work(&grace_period_end, grace_period);
 }
 
 /*
@@ -116,7 +111,6 @@ lockd(void *vrqstp)
 {
 	int		err = 0, preverr = 0;
 	struct svc_rqst *rqstp = vrqstp;
-	unsigned long grace_period_expire;
 
 	/* try_to_freeze() is called from svc_recv() */
 	set_freezable();
@@ -139,7 +133,7 @@ lockd(void *vrqstp)
 		nlm_timeout = LOCKD_DFLT_TIMEO;
 	nlmsvc_timeout = nlm_timeout * HZ;
 
-	grace_period_expire = set_grace_period();
+	set_grace_period();
 
 	/*
 	 * The main request loop. We don't terminate until the last
@@ -153,21 +147,12 @@ lockd(void *vrqstp)
 			flush_signals(current);
 			if (nlmsvc_ops) {
 				nlmsvc_invalidate_all();
-				grace_period_expire = set_grace_period();
+				set_grace_period();
 			}
 			continue;
 		}
 
-		/*
-		 * Retry any blocked locks that have been notified by
-		 * the VFS. Don't do this during grace period.
-		 * (Theoretically, there shouldn't even be blocked locks
-		 * during grace period).
-		 */
-		if (!nlmsvc_grace_period) {
 		timeout = nlmsvc_retry_blocked();
-		} else if (time_before(grace_period_expire, jiffies))
-			clear_grace_period();
 
 		/*
 		 * Find a socket with data available and call its
@@ -195,6 +180,7 @@ lockd(void *vrqstp)
 		svc_process(rqstp);
 	}
 	flush_signals(current);
+	cancel_delayed_work_sync(&grace_period_end);
 	if (nlmsvc_ops)
 		nlmsvc_invalidate_all();
 	nlm_shutdown_hosts();
@@ -203,25 +189,28 @@ lockd(void *vrqstp)
 }
 
 /*
- * Make any sockets that are needed but not present.
- * If nlm_udpport or nlm_tcpport were set as module
- * options, make those sockets unconditionally
+ * Ensure there are active UDP and TCP listeners for lockd.
+ *
+ * Even if we have only TCP NFS mounts and/or TCP NFSDs, some
+ * local services (such as rpc.statd) still require UDP, and
+ * some NFS servers do not yet support NLM over TCP.
+ *
+ * Returns zero if all listeners are available; otherwise a
+ * negative errno value is returned.
  */
-static int make_socks(struct svc_serv *serv, int proto)
+static int make_socks(struct svc_serv *serv)
 {
 	static int warned;
 	struct svc_xprt *xprt;
 	int err = 0;
 
-	if (proto == IPPROTO_UDP || nlm_udpport) {
 	xprt = svc_find_xprt(serv, "udp", 0, 0);
 	if (!xprt)
 		err = svc_create_xprt(serv, "udp", nlm_udpport,
 				      SVC_SOCK_DEFAULTS);
 	else
 		svc_xprt_put(xprt);
-	}
-	if (err >= 0 && (proto == IPPROTO_TCP || nlm_tcpport)) {
+	if (err >= 0) {
 		xprt = svc_find_xprt(serv, "tcp", 0, 0);
 		if (!xprt)
 			err = svc_create_xprt(serv, "tcp", nlm_tcpport,
@@ -241,8 +230,7 @@ static int make_socks(struct svc_serv *serv, int proto)
 /*
  * Bring up the lockd process if it's not already up.
  */
-int
-lockd_up(int proto) /* Maybe add a 'family' option when IPv6 is supported ?? */
+int lockd_up(void)
 {
 	struct svc_serv *serv;
 	int		error = 0;
@@ -251,11 +239,8 @@ lockd_up(int proto) /* Maybe add a 'family' option when IPv6 is supported ?? */
 	/*
 	 * Check whether we're already up and running.
 	 */
-	if (nlmsvc_rqst) {
-		if (proto)
-			error = make_socks(nlmsvc_rqst->rq_server, proto);
+	if (nlmsvc_rqst)
 		goto out;
-	}
 
 	/*
 	 * Sanity check: if there's no pid,
@@ -266,13 +251,14 @@ lockd_up(int proto) /* Maybe add a 'family' option when IPv6 is supported ?? */
 			"lockd_up: no pid, %d users??\n", nlmsvc_users);
 
 	error = -ENOMEM;
-	serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, NULL);
+	serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, AF_INET, NULL);
 	if (!serv) {
 		printk(KERN_WARNING "lockd_up: create service failed\n");
 		goto out;
 	}
 
-	if ((error = make_socks(serv, proto)) < 0)
+	error = make_socks(serv);
+	if (error < 0)
 		goto destroy_and_out;
 
 	/*

fs/lockd/svc4proc.c

@@ -88,12 +88,6 @@ nlm4svc_proc_test(struct svc_rqst *rqstp, struct nlm_args *argp,
 	dprintk("lockd: TEST4        called\n");
 	resp->cookie = argp->cookie;
 
-	/* Don't accept test requests during grace period */
-	if (nlmsvc_grace_period) {
-		resp->status = nlm_lck_denied_grace_period;
-		return rc;
-	}
-
 	/* Obtain client and file */
 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
@@ -122,12 +116,6 @@ nlm4svc_proc_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
 
 	resp->cookie = argp->cookie;
 
-	/* Don't accept new lock requests during grace period */
-	if (nlmsvc_grace_period && !argp->reclaim) {
-		resp->status = nlm_lck_denied_grace_period;
-		return rc;
-	}
-
 	/* Obtain client and file */
 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
@@ -146,7 +134,8 @@ nlm4svc_proc_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
 
 	/* Now try to lock the file */
 	resp->status = nlmsvc_lock(rqstp, file, host, &argp->lock,
-					argp->block, &argp->cookie);
+					argp->block, &argp->cookie,
+					argp->reclaim);
 	if (resp->status == nlm_drop_reply)
 		rc = rpc_drop_reply;
 	else
@@ -169,7 +158,7 @@ nlm4svc_proc_cancel(struct svc_rqst *rqstp, struct nlm_args *argp,
 	resp->cookie = argp->cookie;
 
 	/* Don't accept requests during grace period */
-	if (nlmsvc_grace_period) {
+	if (locks_in_grace()) {
 		resp->status = nlm_lck_denied_grace_period;
 		return rpc_success;
 	}
@@ -202,7 +191,7 @@ nlm4svc_proc_unlock(struct svc_rqst *rqstp, struct nlm_args *argp,
 	resp->cookie = argp->cookie;
 
 	/* Don't accept new lock requests during grace period */
-	if (nlmsvc_grace_period) {
+	if (locks_in_grace()) {
 		resp->status = nlm_lck_denied_grace_period;
 		return rpc_success;
 	}
@@ -231,7 +220,7 @@ nlm4svc_proc_granted(struct svc_rqst *rqstp, struct nlm_args *argp,
 	resp->cookie = argp->cookie;
 
 	dprintk("lockd: GRANTED       called\n");
-	resp->status = nlmclnt_grant(svc_addr_in(rqstp), &argp->lock);
+	resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
 	dprintk("lockd: GRANTED       status %d\n", ntohl(resp->status));
 	return rpc_success;
 }
@@ -341,7 +330,7 @@ nlm4svc_proc_share(struct svc_rqst *rqstp, struct nlm_args *argp,
 	resp->cookie = argp->cookie;
 
 	/* Don't accept new lock requests during grace period */
-	if (nlmsvc_grace_period && !argp->reclaim) {
+	if (locks_in_grace() && !argp->reclaim) {
 		resp->status = nlm_lck_denied_grace_period;
 		return rpc_success;
 	}
@@ -374,7 +363,7 @@ nlm4svc_proc_unshare(struct svc_rqst *rqstp, struct nlm_args *argp,
 	resp->cookie = argp->cookie;
 
 	/* Don't accept requests during grace period */
-	if (nlmsvc_grace_period) {
+	if (locks_in_grace()) {
 		resp->status = nlm_lck_denied_grace_period;
 		return rpc_success;
 	}
@@ -432,11 +421,9 @@ nlm4svc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
 {
 	struct sockaddr_in	saddr;
 
-	memcpy(&saddr, svc_addr_in(rqstp), sizeof(saddr));
-
 	dprintk("lockd: SM_NOTIFY     called\n");
-	if (saddr.sin_addr.s_addr != htonl(INADDR_LOOPBACK)
-	 || ntohs(saddr.sin_port) >= 1024) {
+
+	if (!nlm_privileged_requester(rqstp)) {
 		char buf[RPC_MAX_ADDRBUFLEN];
 		printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
 				svc_print_addr(rqstp, buf, sizeof(buf)));

fs/lockd/svclock.c

@@ -360,7 +360,7 @@ nlmsvc_defer_lock_rqst(struct svc_rqst *rqstp, struct nlm_block *block)
 __be32
 nlmsvc_lock(struct svc_rqst *rqstp, struct nlm_file *file,
 	    struct nlm_host *host, struct nlm_lock *lock, int wait,
-	    struct nlm_cookie *cookie)
+	    struct nlm_cookie *cookie, int reclaim)
 {
 	struct nlm_block	*block = NULL;
 	int			error;
@@ -406,6 +406,15 @@ nlmsvc_lock(struct svc_rqst *rqstp, struct nlm_file *file,
 		goto out;
 	}
 
+	if (locks_in_grace() && !reclaim) {
+		ret = nlm_lck_denied_grace_period;
+		goto out;
+	}
+	if (reclaim && !locks_in_grace()) {
+		ret = nlm_lck_denied_grace_period;
+		goto out;
+	}
+
 	if (!wait)
 		lock->fl.fl_flags &= ~FL_SLEEP;
 	error = vfs_lock_file(file->f_file, F_SETLK, &lock->fl, NULL);
@@ -502,6 +511,10 @@ nlmsvc_testlock(struct svc_rqst *rqstp, struct nlm_file *file,
 		goto out;
 	}
 
+	if (locks_in_grace()) {
+		ret = nlm_lck_denied_grace_period;
+		goto out;
+	}
 	error = vfs_test_lock(file->f_file, &lock->fl);
 	if (error == FILE_LOCK_DEFERRED) {
 		ret = nlmsvc_defer_lock_rqst(rqstp, block);
@@ -582,6 +595,9 @@ nlmsvc_cancel_blocked(struct nlm_file *file, struct nlm_lock *lock)
 				(long long)lock->fl.fl_start,
 				(long long)lock->fl.fl_end);
 
+	if (locks_in_grace())
+		return nlm_lck_denied_grace_period;
+
 	mutex_lock(&file->f_mutex);
 	block = nlmsvc_lookup_block(file, lock);
 	mutex_unlock(&file->f_mutex);

fs/lockd/svcproc.c

@@ -117,12 +117,6 @@ nlmsvc_proc_test(struct svc_rqst *rqstp, struct nlm_args *argp,
 	dprintk("lockd: TEST          called\n");
 	resp->cookie = argp->cookie;
 
-	/* Don't accept test requests during grace period */
-	if (nlmsvc_grace_period) {
-		resp->status = nlm_lck_denied_grace_period;
-		return rc;
-	}
-
 	/* Obtain client and file */
 	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
@@ -152,12 +146,6 @@ nlmsvc_proc_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
 
 	resp->cookie = argp->cookie;
 
-	/* Don't accept new lock requests during grace period */
-	if (nlmsvc_grace_period && !argp->reclaim) {
-		resp->status = nlm_lck_denied_grace_period;
-		return rc;
-	}
-
 	/* Obtain client and file */
 	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
@@ -176,7 +164,8 @@ nlmsvc_proc_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
 
 	/* Now try to lock the file */
 	resp->status = cast_status(nlmsvc_lock(rqstp, file, host, &argp->lock,
-					       argp->block, &argp->cookie));
+					       argp->block, &argp->cookie,
+					       argp->reclaim));
 	if (resp->status == nlm_drop_reply)
 		rc = rpc_drop_reply;
 	else
@@ -199,7 +188,7 @@ nlmsvc_proc_cancel(struct svc_rqst *rqstp, struct nlm_args *argp,
 	resp->cookie = argp->cookie;
 
 	/* Don't accept requests during grace period */
-	if (nlmsvc_grace_period) {
+	if (locks_in_grace()) {
 		resp->status = nlm_lck_denied_grace_period;
 		return rpc_success;
 	}
@@ -232,7 +221,7 @@ nlmsvc_proc_unlock(struct svc_rqst *rqstp, struct nlm_args *argp,
 	resp->cookie = argp->cookie;
 
 	/* Don't accept new lock requests during grace period */
-	if (nlmsvc_grace_period) {
+	if (locks_in_grace()) {
 		resp->status = nlm_lck_denied_grace_period;
 		return rpc_success;
 	}
@@ -261,7 +250,7 @@ nlmsvc_proc_granted(struct svc_rqst *rqstp, struct nlm_args *argp,
 	resp->cookie = argp->cookie;
 
 	dprintk("lockd: GRANTED       called\n");
-	resp->status = nlmclnt_grant(svc_addr_in(rqstp), &argp->lock);
+	resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
 	dprintk("lockd: GRANTED       status %d\n", ntohl(resp->status));
 	return rpc_success;
 }
@@ -373,7 +362,7 @@ nlmsvc_proc_share(struct svc_rqst *rqstp, struct nlm_args *argp,
 	resp->cookie = argp->cookie;
 
 	/* Don't accept new lock requests during grace period */
-	if (nlmsvc_grace_period && !argp->reclaim) {
+	if (locks_in_grace() && !argp->reclaim) {
 		resp->status = nlm_lck_denied_grace_period;
 		return rpc_success;
 	}
@@ -406,7 +395,7 @@ nlmsvc_proc_unshare(struct svc_rqst *rqstp, struct nlm_args *argp,
 	resp->cookie = argp->cookie;
 
 	/* Don't accept requests during grace period */
-	if (nlmsvc_grace_period) {
+	if (locks_in_grace()) {
 		resp->status = nlm_lck_denied_grace_period;
 		return rpc_success;
 	}
@@ -464,11 +453,9 @@ nlmsvc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
 {
 	struct sockaddr_in	saddr;
 
-	memcpy(&saddr, svc_addr_in(rqstp), sizeof(saddr));
-
 	dprintk("lockd: SM_NOTIFY     called\n");
-	if (saddr.sin_addr.s_addr != htonl(INADDR_LOOPBACK)
-	 || ntohs(saddr.sin_port) >= 1024) {
+
+	if (!nlm_privileged_requester(rqstp)) {
 		char buf[RPC_MAX_ADDRBUFLEN];
 		printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
 				svc_print_addr(rqstp, buf, sizeof(buf)));

fs/lockd/svcsubs.c

@@ -418,7 +418,7 @@ EXPORT_SYMBOL_GPL(nlmsvc_unlock_all_by_sb);
 static int
 nlmsvc_match_ip(void *datap, struct nlm_host *host)
 {
-	return nlm_cmp_addr(&host->h_saddr, datap);
+	return nlm_cmp_addr(nlm_srcaddr(host), datap);
 }
 
 /**

fs/lockd/xdr.c

@@ -351,8 +351,6 @@ nlmsvc_decode_reboot(struct svc_rqst *rqstp, __be32 *p, struct nlm_reboot *argp)
 	argp->state = ntohl(*p++);
 	/* Preserve the address in network byte order */
 	argp->addr = *p++;
-	argp->vers = *p++;
-	argp->proto = *p++;
 	return xdr_argsize_check(rqstp, p);
 }
 

fs/lockd/xdr4.c

@@ -358,8 +358,6 @@ nlm4svc_decode_reboot(struct svc_rqst *rqstp, __be32 *p, struct nlm_reboot *argp
 	argp->state = ntohl(*p++);
 	/* Preserve the address in network byte order */
 	argp->addr  = *p++;
-	argp->vers  = *p++;
-	argp->proto = *p++;
 	return xdr_argsize_check(rqstp, p);
 }
 

fs/nfs/callback.c

@@ -105,7 +105,8 @@ 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, NULL);
+	serv = svc_create(&nfs4_callback_program, NFS4_CALLBACK_BUFSIZE,
+				AF_INET, NULL);
 	ret = -ENOMEM;
 	if (!serv)
 		goto out_err;

fs/nfsd/lockd.c

@@ -70,7 +70,6 @@ nlm_fclose(struct file *filp)
 static struct nlmsvc_binding	nfsd_nlm_ops = {
 	.fopen		= nlm_fopen,		/* open file for locking */
 	.fclose		= nlm_fclose,		/* close file */
-	.get_grace_period = get_nfs4_grace_period,
 };
 
 void

fs/nfsd/nfs3proc.c

@@ -63,7 +63,8 @@ nfsd3_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle  *argp,
 		SVCFH_fmt(&argp->fh));
 
 	fh_copy(&resp->fh, &argp->fh);
-	nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
+	nfserr = fh_verify(rqstp, &resp->fh, 0,
+			NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
 	if (nfserr)
 		RETURN_STATUS(nfserr);
 
@@ -530,7 +531,7 @@ nfsd3_proc_fsstat(struct svc_rqst * rqstp, struct nfsd_fhandle    *argp,
 	dprintk("nfsd: FSSTAT(3)   %s\n",
 				SVCFH_fmt(&argp->fh));
 
-	nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats);
+	nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats, 0);
 	fh_put(&argp->fh);
 	RETURN_STATUS(nfserr);
 }
@@ -558,7 +559,8 @@ nfsd3_proc_fsinfo(struct svc_rqst * rqstp, struct nfsd_fhandle    *argp,
 	resp->f_maxfilesize = ~(u32) 0;
 	resp->f_properties = NFS3_FSF_DEFAULT;
 
-	nfserr = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP);
+	nfserr = fh_verify(rqstp, &argp->fh, 0,
+			NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
 
 	/* Check special features of the file system. May request
 	 * different read/write sizes for file systems known to have

fs/nfsd/nfs4callback.c

@@ -225,7 +225,8 @@ encode_cb_recall(struct xdr_stream *xdr, struct nfs4_cb_recall *cb_rec)
 
 	RESERVE_SPACE(12+sizeof(cb_rec->cbr_stateid) + len);
 	WRITE32(OP_CB_RECALL);
-	WRITEMEM(&cb_rec->cbr_stateid, sizeof(stateid_t));
+	WRITE32(cb_rec->cbr_stateid.si_generation);
+	WRITEMEM(&cb_rec->cbr_stateid.si_opaque, sizeof(stateid_opaque_t));
 	WRITE32(cb_rec->cbr_trunc);
 	WRITE32(len);
 	WRITEMEM(cb_rec->cbr_fhval, len);
@@ -379,6 +380,7 @@ static int do_probe_callback(void *data)
 		.addrsize	= sizeof(addr),
 		.timeout	= &timeparms,
 		.program	= &cb_program,
+		.prognumber	= cb->cb_prog,
 		.version	= nfs_cb_version[1]->number,
 		.authflavor	= RPC_AUTH_UNIX, /* XXX: need AUTH_GSS... */
 		.flags		= (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET),
@@ -396,9 +398,6 @@ static int do_probe_callback(void *data)
 	addr.sin_port = htons(cb->cb_port);
 	addr.sin_addr.s_addr = htonl(cb->cb_addr);
 
-	/* Initialize rpc_stat */
-	memset(args.program->stats, 0, sizeof(struct rpc_stat));
-
 	/* Create RPC client */
 	client = rpc_create(&args);
 	if (IS_ERR(client)) {

fs/nfsd/nfs4proc.c

@@ -201,10 +201,10 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	/* Openowner is now set, so sequence id will get bumped.  Now we need
 	 * these checks before we do any creates: */
 	status = nfserr_grace;
-	if (nfs4_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
+	if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
 		goto out;
 	status = nfserr_no_grace;
-	if (!nfs4_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
+	if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
 		goto out;
 
 	switch (open->op_claim_type) {
@@ -575,7 +575,7 @@ nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 {
 	__be32 status;
 
-	if (nfs4_in_grace())
+	if (locks_in_grace())
 		return nfserr_grace;
 	status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
 			     remove->rm_name, remove->rm_namelen);
@@ -596,7 +596,7 @@ nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 
 	if (!cstate->save_fh.fh_dentry)
 		return status;
-	if (nfs4_in_grace() && !(cstate->save_fh.fh_export->ex_flags
+	if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
 					& NFSEXP_NOSUBTREECHECK))
 		return nfserr_grace;
 	status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,

fs/nfsd/nfs4state.c

@@ -61,7 +61,6 @@
 static time_t lease_time = 90;     /* default lease time */
 static time_t user_lease_time = 90;
 static time_t boot_time;
-static int in_grace = 1;
 static u32 current_ownerid = 1;
 static u32 current_fileid = 1;
 static u32 current_delegid = 1;
@@ -1640,7 +1639,7 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_sta
 		case NFS4_OPEN_CLAIM_NULL:
 			/* Let's not give out any delegations till everyone's
 			 * had the chance to reclaim theirs.... */
-			if (nfs4_in_grace())
+			if (locks_in_grace())
 				goto out;
 			if (!atomic_read(&cb->cb_set) || !sop->so_confirmed)
 				goto out;
@@ -1816,12 +1815,15 @@ nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	return status;
 }
 
+struct lock_manager nfsd4_manager = {
+};
+
 static void
-end_grace(void)
+nfsd4_end_grace(void)
 {
 	dprintk("NFSD: end of grace period\n");
 	nfsd4_recdir_purge_old();
-	in_grace = 0;
+	locks_end_grace(&nfsd4_manager);
 }
 
 static time_t
@@ -1838,8 +1840,8 @@ nfs4_laundromat(void)
 	nfs4_lock_state();
 
 	dprintk("NFSD: laundromat service - starting\n");
-	if (in_grace)
-		end_grace();
+	if (locks_in_grace())
+		nfsd4_end_grace();
 	list_for_each_safe(pos, next, &client_lru) {
 		clp = list_entry(pos, struct nfs4_client, cl_lru);
 		if (time_after((unsigned long)clp->cl_time, (unsigned long)cutoff)) {
@@ -1974,7 +1976,7 @@ check_special_stateids(svc_fh *current_fh, stateid_t *stateid, int flags)
 		return nfserr_bad_stateid;
 	else if (ONE_STATEID(stateid) && (flags & RD_STATE))
 		return nfs_ok;
-	else if (nfs4_in_grace()) {
+	else if (locks_in_grace()) {
 		/* Answer in remaining cases depends on existance of
 		 * conflicting state; so we must wait out the grace period. */
 		return nfserr_grace;
@@ -1993,7 +1995,7 @@ check_special_stateids(svc_fh *current_fh, stateid_t *stateid, int flags)
 static inline int
 io_during_grace_disallowed(struct inode *inode, int flags)
 {
-	return nfs4_in_grace() && (flags & (RD_STATE | WR_STATE))
+	return locks_in_grace() && (flags & (RD_STATE | WR_STATE))
 		&& mandatory_lock(inode);
 }
 
@@ -2693,10 +2695,10 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	filp = lock_stp->st_vfs_file;
 
 	status = nfserr_grace;
-	if (nfs4_in_grace() && !lock->lk_reclaim)
+	if (locks_in_grace() && !lock->lk_reclaim)
 		goto out;
 	status = nfserr_no_grace;
-	if (!nfs4_in_grace() && lock->lk_reclaim)
+	if (!locks_in_grace() && lock->lk_reclaim)
 		goto out;
 
 	locks_init_lock(&file_lock);
@@ -2779,7 +2781,7 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	int error;
 	__be32 status;
 
-	if (nfs4_in_grace())
+	if (locks_in_grace())
 		return nfserr_grace;
 
 	if (check_lock_length(lockt->lt_offset, lockt->lt_length))
@@ -3192,9 +3194,9 @@ __nfs4_state_start(void)
 	unsigned long grace_time;
 
 	boot_time = get_seconds();
-	grace_time = get_nfs_grace_period();
+	grace_time = get_nfs4_grace_period();
 	lease_time = user_lease_time;
-	in_grace = 1;
+	locks_start_grace(&nfsd4_manager);
 	printk(KERN_INFO "NFSD: starting %ld-second grace period\n",
 	       grace_time/HZ);
 	laundry_wq = create_singlethread_workqueue("nfsd4");
@@ -3213,12 +3215,6 @@ nfs4_state_start(void)
 	return;
 }
 
-int
-nfs4_in_grace(void)
-{
-	return in_grace;
-}
-
 time_t
 nfs4_lease_time(void)
 {

fs/nfsd/nfsctl.c

@@ -614,10 +614,9 @@ static ssize_t __write_ports(struct file *file, char *buf, size_t size)
 			return -EINVAL;
 		err = nfsd_create_serv();
 		if (!err) {
-			int proto = 0;
-			err = svc_addsock(nfsd_serv, fd, buf, &proto);
+			err = svc_addsock(nfsd_serv, fd, buf);
 			if (err >= 0) {
-				err = lockd_up(proto);
+				err = lockd_up();
 				if (err < 0)
 					svc_sock_names(buf+strlen(buf)+1, nfsd_serv, buf);
 			}

fs/nfsd/nfsfh.c

@@ -302,17 +302,27 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
 	if (error)
 		goto out;
 
-	if (!(access & NFSD_MAY_LOCK)) {
 	/*
 	 * pseudoflavor restrictions are not enforced on NLM,
 	 * which clients virtually always use auth_sys for,
 	 * even while using RPCSEC_GSS for NFS.
 	 */
+	if (access & NFSD_MAY_LOCK)
+		goto skip_pseudoflavor_check;
+	/*
+	 * Clients may expect to be able to use auth_sys during mount,
+	 * even if they use gss for everything else; see section 2.3.2
+	 * of rfc 2623.
+	 */
+	if (access & NFSD_MAY_BYPASS_GSS_ON_ROOT
+			&& exp->ex_path.dentry == dentry)
+		goto skip_pseudoflavor_check;
+
 	error = check_nfsd_access(exp, rqstp);
 	if (error)
 		goto out;
-	}
 
+skip_pseudoflavor_check:
 	/* Finally, check access permissions. */
 	error = nfsd_permission(rqstp, exp, dentry, access);
 

fs/nfsd/nfsproc.c

@@ -65,7 +65,8 @@ nfsd_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle  *argp,
 	dprintk("nfsd: GETATTR  %s\n", SVCFH_fmt(&argp->fh));
 
 	fh_copy(&resp->fh, &argp->fh);
-	nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
+	nfserr = fh_verify(rqstp, &resp->fh, 0,
+			NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
 	return nfsd_return_attrs(nfserr, resp);
 }
 
@@ -521,7 +522,8 @@ nfsd_proc_statfs(struct svc_rqst * rqstp, struct nfsd_fhandle   *argp,
 
 	dprintk("nfsd: STATFS   %s\n", SVCFH_fmt(&argp->fh));
 
-	nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats);
+	nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats,
+			NFSD_MAY_BYPASS_GSS_ON_ROOT);
 	fh_put(&argp->fh);
 	return nfserr;
 }

fs/nfsd/nfssvc.c

@@ -229,6 +229,7 @@ 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;
@@ -243,25 +244,20 @@ static int nfsd_init_socks(int port)
 	if (!list_empty(&nfsd_serv->sv_permsocks))
 		return 0;
 
-	error = lockd_up(IPPROTO_UDP);
-	if (error >= 0) {
 	error = svc_create_xprt(nfsd_serv, "udp", port,
 					SVC_SOCK_DEFAULTS);
-		if (error < 0)
-			lockd_down();
-	}
 	if (error < 0)
 		return error;
 
-	error = lockd_up(IPPROTO_TCP);
-	if (error >= 0) {
 	error = svc_create_xprt(nfsd_serv, "tcp", port,
 					SVC_SOCK_DEFAULTS);
 	if (error < 0)
-			lockd_down();
-	}
+		return error;
+
+	error = lockd_up();
 	if (error < 0)
 		return error;
+
 	return 0;
 }
 

fs/nfsd/vfs.c

@@ -83,7 +83,6 @@ struct raparm_hbucket {
 	spinlock_t		pb_lock;
 } ____cacheline_aligned_in_smp;
 
-static struct raparms *		raparml;
 #define RAPARM_HASH_BITS	4
 #define RAPARM_HASH_SIZE	(1<<RAPARM_HASH_BITS)
 #define RAPARM_HASH_MASK	(RAPARM_HASH_SIZE-1)
@@ -1866,9 +1865,9 @@ nfsd_readdir(struct svc_rqst *rqstp, struct svc_fh *fhp, loff_t *offsetp,
  * N.B. After this call fhp needs an fh_put
  */
 __be32
-nfsd_statfs(struct svc_rqst *rqstp, struct svc_fh *fhp, struct kstatfs *stat)
+nfsd_statfs(struct svc_rqst *rqstp, struct svc_fh *fhp, struct kstatfs *stat, int access)
 {
-	__be32 err = fh_verify(rqstp, fhp, 0, NFSD_MAY_NOP);
+	__be32 err = fh_verify(rqstp, fhp, 0, NFSD_MAY_NOP | access);
 	if (!err && vfs_statfs(fhp->fh_dentry,stat))
 		err = nfserr_io;
 	return err;
@@ -1966,11 +1965,20 @@ nfsd_permission(struct svc_rqst *rqstp, struct svc_export *exp,
 void
 nfsd_racache_shutdown(void)
 {
-	if (!raparml)
-		return;
+	struct raparms *raparm, *last_raparm;
+	unsigned int i;
+
 	dprintk("nfsd: freeing readahead buffers.\n");
-	kfree(raparml);
-	raparml = NULL;
+
+	for (i = 0; i < RAPARM_HASH_SIZE; i++) {
+		raparm = raparm_hash[i].pb_head;
+		while(raparm) {
+			last_raparm = raparm;
+			raparm = raparm->p_next;
+			kfree(last_raparm);
+		}
+		raparm_hash[i].pb_head = NULL;
+	}
 }
 /*
  * Initialize readahead param cache
@@ -1981,35 +1989,38 @@ nfsd_racache_init(int cache_size)
 	int	i;
 	int	j = 0;
 	int	nperbucket;
+	struct raparms **raparm = NULL;
 
 
-	if (raparml)
+	if (raparm_hash[0].pb_head)
 		return 0;
-	if (cache_size < 2*RAPARM_HASH_SIZE)
-		cache_size = 2*RAPARM_HASH_SIZE;
-	raparml = kcalloc(cache_size, sizeof(struct raparms), GFP_KERNEL);
-
-	if (!raparml) {
-		printk(KERN_WARNING
-			"nfsd: Could not allocate memory read-ahead cache.\n");
-		return -ENOMEM;
-	}
+	nperbucket = DIV_ROUND_UP(cache_size, RAPARM_HASH_SIZE);
+	if (nperbucket < 2)
+		nperbucket = 2;
+	cache_size = nperbucket * RAPARM_HASH_SIZE;
 
 	dprintk("nfsd: allocating %d readahead buffers.\n", cache_size);
-	for (i = 0 ; i < RAPARM_HASH_SIZE ; i++) {
-		raparm_hash[i].pb_head = NULL;
+
+	for (i = 0; i < RAPARM_HASH_SIZE; i++) {
 		spin_lock_init(&raparm_hash[i].pb_lock);
+
+		raparm = &raparm_hash[i].pb_head;
+		for (j = 0; j < nperbucket; j++) {
+			*raparm = kzalloc(sizeof(struct raparms), GFP_KERNEL);
+			if (!*raparm)
+				goto out_nomem;
+			raparm = &(*raparm)->p_next;
 		}
-	nperbucket = DIV_ROUND_UP(cache_size, RAPARM_HASH_SIZE);
-	for (i = 0; i < cache_size - 1; i++) {
-		if (i % nperbucket == 0)
-			raparm_hash[j++].pb_head = raparml + i;
-		if (i % nperbucket < nperbucket-1)
-			raparml[i].p_next = raparml + i + 1;
+		*raparm = NULL;
 	}
 
 	nfsdstats.ra_size = cache_size;
 	return 0;
+
+out_nomem:
+	dprintk("nfsd: kmalloc failed, freeing readahead buffers\n");
+	nfsd_racache_shutdown();
+	return -ENOMEM;
 }
 
 #if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)

fs/proc/proc_misc.c

@@ -683,6 +683,7 @@ static int cmdline_read_proc(char *page, char **start, off_t off,
 	return proc_calc_metrics(page, start, off, count, eof, len);
 }
 
+#ifdef CONFIG_FILE_LOCKING
 static int locks_open(struct inode *inode, struct file *filp)
 {
 	return seq_open(filp, &locks_seq_operations);
@@ -694,6 +695,7 @@ static const struct file_operations proc_locks_operations = {
 	.llseek		= seq_lseek,
 	.release	= seq_release,
 };
+#endif /* CONFIG_FILE_LOCKING */
 
 static int execdomains_read_proc(char *page, char **start, off_t off,
 				 int count, int *eof, void *data)
@@ -887,7 +889,9 @@ void __init proc_misc_init(void)
 #ifdef CONFIG_PRINTK
 	proc_create("kmsg", S_IRUSR, NULL, &proc_kmsg_operations);
 #endif
+#ifdef CONFIG_FILE_LOCKING
 	proc_create("locks", 0, NULL, &proc_locks_operations);
+#endif
 	proc_create("devices", 0, NULL, &proc_devinfo_operations);
 	proc_create("cpuinfo", 0, NULL, &proc_cpuinfo_operations);
 #ifdef CONFIG_BLOCK

include/linux/fs.h

@@ -947,6 +947,14 @@ struct lock_manager_operations {
 	int (*fl_change)(struct file_lock **, int);
 };
 
+struct lock_manager {
+	struct list_head list;
+};
+
+void locks_start_grace(struct lock_manager *);
+void locks_end_grace(struct lock_manager *);
+int locks_in_grace(void);
+
 /* that will die - we need it for nfs_lock_info */
 #include <linux/nfs_fs_i.h>
 
@@ -988,6 +996,13 @@ struct file_lock {
 
 #include <linux/fcntl.h>
 
+extern void send_sigio(struct fown_struct *fown, int fd, int band);
+
+/* fs/sync.c */
+extern int do_sync_mapping_range(struct address_space *mapping, loff_t offset,
+			loff_t endbyte, unsigned int flags);
+
+#ifdef CONFIG_FILE_LOCKING
 extern int fcntl_getlk(struct file *, struct flock __user *);
 extern int fcntl_setlk(unsigned int, struct file *, unsigned int,
 			struct flock __user *);
@@ -998,14 +1013,9 @@ extern int fcntl_setlk64(unsigned int, struct file *, unsigned int,
 			struct flock64 __user *);
 #endif
 
-extern void send_sigio(struct fown_struct *fown, int fd, int band);
 extern int fcntl_setlease(unsigned int fd, struct file *filp, long arg);
 extern int fcntl_getlease(struct file *filp);
 
-/* fs/sync.c */
-extern int do_sync_mapping_range(struct address_space *mapping, loff_t offset,
-			loff_t endbyte, unsigned int flags);
-
 /* fs/locks.c */
 extern void locks_init_lock(struct file_lock *);
 extern void locks_copy_lock(struct file_lock *, struct file_lock *);
@@ -1028,6 +1038,37 @@ extern int lease_modify(struct file_lock **, int);
 extern int lock_may_read(struct inode *, loff_t start, unsigned long count);
 extern int lock_may_write(struct inode *, loff_t start, unsigned long count);
 extern struct seq_operations locks_seq_operations;
+#else /* !CONFIG_FILE_LOCKING */
+#define fcntl_getlk(a, b) ({ -EINVAL; })
+#define fcntl_setlk(a, b, c, d) ({ -EACCES; })
+#if BITS_PER_LONG == 32
+#define fcntl_getlk64(a, b) ({ -EINVAL; })
+#define fcntl_setlk64(a, b, c, d) ({ -EACCES; })
+#endif
+#define fcntl_setlease(a, b, c) ({ 0; })
+#define fcntl_getlease(a) ({ 0; })
+#define locks_init_lock(a) ({ })
+#define __locks_copy_lock(a, b) ({ })
+#define locks_copy_lock(a, b) ({ })
+#define locks_remove_posix(a, b) ({ })
+#define locks_remove_flock(a) ({ })
+#define posix_test_lock(a, b) ({ 0; })
+#define posix_lock_file(a, b, c) ({ -ENOLCK; })
+#define posix_lock_file_wait(a, b) ({ -ENOLCK; })
+#define posix_unblock_lock(a, b) (-ENOENT)
+#define vfs_test_lock(a, b) ({ 0; })
+#define vfs_lock_file(a, b, c, d) (-ENOLCK)
+#define vfs_cancel_lock(a, b) ({ 0; })
+#define flock_lock_file_wait(a, b) ({ -ENOLCK; })
+#define __break_lease(a, b) ({ 0; })
+#define lease_get_mtime(a, b) ({ })
+#define generic_setlease(a, b, c) ({ -EINVAL; })
+#define vfs_setlease(a, b, c) ({ -EINVAL; })
+#define lease_modify(a, b) ({ -EINVAL; })
+#define lock_may_read(a, b, c) ({ 1; })
+#define lock_may_write(a, b, c) ({ 1; })
+#endif /* !CONFIG_FILE_LOCKING */
+
 
 struct fasync_struct {
 	int	magic;
@@ -1575,9 +1616,12 @@ extern int vfs_statfs(struct dentry *, struct kstatfs *);
 /* /sys/fs */
 extern struct kobject *fs_kobj;
 
+extern int rw_verify_area(int, struct file *, loff_t *, size_t);
+
 #define FLOCK_VERIFY_READ  1
 #define FLOCK_VERIFY_WRITE 2
 
+#ifdef CONFIG_FILE_LOCKING
 extern int locks_mandatory_locked(struct inode *);
 extern int locks_mandatory_area(int, struct inode *, struct file *, loff_t, size_t);
 
@@ -1608,8 +1652,6 @@ static inline int locks_verify_locked(struct inode *inode)
 	return 0;
 }
 
-extern int rw_verify_area(int, struct file *, loff_t *, size_t);
-
 static inline int locks_verify_truncate(struct inode *inode,
 				    struct file *filp,
 				    loff_t size)
@@ -1630,6 +1672,15 @@ static inline int break_lease(struct inode *inode, unsigned int mode)
 		return __break_lease(inode, mode);
 	return 0;
 }
+#else /* !CONFIG_FILE_LOCKING */
+#define locks_mandatory_locked(a) ({ 0; })
+#define locks_mandatory_area(a, b, c, d, e) ({ 0; })
+#define __mandatory_lock(a) ({ 0; })
+#define mandatory_lock(a) ({ 0; })
+#define locks_verify_locked(a) ({ 0; })
+#define locks_verify_truncate(a, b, c) ({ 0; })
+#define break_lease(a, b) ({ 0; })
+#endif /* CONFIG_FILE_LOCKING */
 
 /* fs/open.c */
 

include/linux/lockd/bind.h

@@ -27,7 +27,6 @@ struct nlmsvc_binding {
 						struct nfs_fh *,
 						struct file **);
 	void			(*fclose)(struct file *);
-	unsigned long		(*get_grace_period)(void);
 };
 
 extern struct nlmsvc_binding *	nlmsvc_ops;
@@ -53,15 +52,7 @@ extern void	nlmclnt_done(struct nlm_host *host);
 
 extern int	nlmclnt_proc(struct nlm_host *host, int cmd,
 					struct file_lock *fl);
-extern int	lockd_up(int proto);
+extern int	lockd_up(void);
 extern void	lockd_down(void);
 
-unsigned long get_nfs_grace_period(void);
-
-#ifdef CONFIG_NFSD_V4
-unsigned long get_nfs4_grace_period(void);
-#else
-static inline unsigned long get_nfs4_grace_period(void) {return 0;}
-#endif
-
 #endif /* LINUX_LOCKD_BIND_H */

include/linux/lockd/lockd.h

@@ -12,6 +12,8 @@
 #ifdef __KERNEL__
 
 #include <linux/in.h>
+#include <linux/in6.h>
+#include <net/ipv6.h>
 #include <linux/fs.h>
 #include <linux/kref.h>
 #include <linux/utsname.h>
@@ -38,8 +40,9 @@
  */
 struct nlm_host {
 	struct hlist_node	h_hash;		/* doubly linked list */
-	struct sockaddr_in	h_addr;		/* peer address */
-	struct sockaddr_in	h_saddr;	/* our address (optional) */
+	struct sockaddr_storage	h_addr;		/* peer address */
+	size_t			h_addrlen;
+	struct sockaddr_storage	h_srcaddr;	/* our address (optional) */
 	struct rpc_clnt	*	h_rpcclnt;	/* RPC client to talk to peer */
 	char *			h_name;		/* remote hostname */
 	u32			h_version;	/* interface version */
@@ -61,17 +64,55 @@ struct nlm_host {
 	struct list_head	h_granted;	/* Locks in GRANTED state */
 	struct list_head	h_reclaim;	/* Locks in RECLAIM state */
 	struct nsm_handle *	h_nsmhandle;	/* NSM status handle */
+
+	char			h_addrbuf[48],	/* address eyecatchers */
+				h_srcaddrbuf[48];
 };
 
 struct nsm_handle {
 	struct list_head	sm_link;
 	atomic_t		sm_count;
 	char *			sm_name;
-	struct sockaddr_in	sm_addr;
+	struct sockaddr_storage	sm_addr;
+	size_t			sm_addrlen;
 	unsigned int		sm_monitored : 1,
 				sm_sticky : 1;	/* don't unmonitor */
+	char			sm_addrbuf[48];	/* address eyecatcher */
 };
 
+/*
+ * Rigorous type checking on sockaddr type conversions
+ */
+static inline struct sockaddr_in *nlm_addr_in(const struct nlm_host *host)
+{
+	return (struct sockaddr_in *)&host->h_addr;
+}
+
+static inline struct sockaddr *nlm_addr(const struct nlm_host *host)
+{
+	return (struct sockaddr *)&host->h_addr;
+}
+
+static inline struct sockaddr_in *nlm_srcaddr_in(const struct nlm_host *host)
+{
+	return (struct sockaddr_in *)&host->h_srcaddr;
+}
+
+static inline struct sockaddr *nlm_srcaddr(const struct nlm_host *host)
+{
+	return (struct sockaddr *)&host->h_srcaddr;
+}
+
+static inline struct sockaddr_in *nsm_addr_in(const struct nsm_handle *handle)
+{
+	return (struct sockaddr_in *)&handle->sm_addr;
+}
+
+static inline struct sockaddr *nsm_addr(const struct nsm_handle *handle)
+{
+	return (struct sockaddr *)&handle->sm_addr;
+}
+
 /*
  * Map an fl_owner_t into a unique 32-bit "pid"
  */
@@ -166,7 +207,8 @@ int		  nlm_async_reply(struct nlm_rqst *, u32, const struct rpc_call_ops *);
 struct nlm_wait * nlmclnt_prepare_block(struct nlm_host *host, struct file_lock *fl);
 void		  nlmclnt_finish_block(struct nlm_wait *block);
 int		  nlmclnt_block(struct nlm_wait *block, struct nlm_rqst *req, long timeout);
-__be32		  nlmclnt_grant(const struct sockaddr_in *addr, const struct nlm_lock *);
+__be32		  nlmclnt_grant(const struct sockaddr *addr,
+				const struct nlm_lock *lock);
 void		  nlmclnt_recovery(struct nlm_host *);
 int		  nlmclnt_reclaim(struct nlm_host *, struct file_lock *);
 void		  nlmclnt_next_cookie(struct nlm_cookie *);
@@ -174,12 +216,14 @@ void		  nlmclnt_next_cookie(struct nlm_cookie *);
 /*
  * Host cache
  */
-struct nlm_host  *nlmclnt_lookup_host(const struct sockaddr_in *sin,
-					int proto, u32 version,
+struct nlm_host  *nlmclnt_lookup_host(const struct sockaddr *sap,
+					const size_t salen,
+					const unsigned short protocol,
+					const u32 version,
+					const char *hostname);
+struct nlm_host  *nlmsvc_lookup_host(const struct svc_rqst *rqstp,
 					const char *hostname,
-					unsigned int hostname_len);
-struct nlm_host  *nlmsvc_lookup_host(struct svc_rqst *, const char *,
-					unsigned int);
+					const size_t hostname_len);
 struct rpc_clnt * nlm_bind_host(struct nlm_host *);
 void		  nlm_rebind_host(struct nlm_host *);
 struct nlm_host * nlm_get_host(struct nlm_host *);
@@ -201,7 +245,7 @@ typedef int	  (*nlm_host_match_fn_t)(void *cur, struct nlm_host *ref);
  */
 __be32		  nlmsvc_lock(struct svc_rqst *, struct nlm_file *,
 			      struct nlm_host *, struct nlm_lock *, int,
-			      struct nlm_cookie *);
+			      struct nlm_cookie *, int);
 __be32		  nlmsvc_unlock(struct nlm_file *, struct nlm_lock *);
 __be32		  nlmsvc_testlock(struct svc_rqst *, struct nlm_file *,
 			struct nlm_host *, struct nlm_lock *,
@@ -233,15 +277,82 @@ static inline struct inode *nlmsvc_file_inode(struct nlm_file *file)
 	return file->f_file->f_path.dentry->d_inode;
 }
 
+static inline int __nlm_privileged_request4(const struct sockaddr *sap)
+{
+	const struct sockaddr_in *sin = (struct sockaddr_in *)sap;
+	return (sin->sin_addr.s_addr == htonl(INADDR_LOOPBACK)) &&
+			(ntohs(sin->sin_port) < 1024);
+}
+
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+static inline int __nlm_privileged_request6(const struct sockaddr *sap)
+{
+	const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
+	return (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LOOPBACK) &&
+			(ntohs(sin6->sin6_port) < 1024);
+}
+#else	/* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+static inline int __nlm_privileged_request6(const struct sockaddr *sap)
+{
+	return 0;
+}
+#endif	/* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+
 /*
- * Compare two host addresses (needs modifying for ipv6)
+ * Ensure incoming requests are from local privileged callers.
+ *
+ * Return TRUE if sender is local and is connecting via a privileged port;
+ * otherwise return FALSE.
  */
-static inline int nlm_cmp_addr(const struct sockaddr_in *sin1,
-			       const struct sockaddr_in *sin2)
+static inline int nlm_privileged_requester(const struct svc_rqst *rqstp)
 {
+	const struct sockaddr *sap = svc_addr(rqstp);
+
+	switch (sap->sa_family) {
+	case AF_INET:
+		return __nlm_privileged_request4(sap);
+	case AF_INET6:
+		return __nlm_privileged_request6(sap);
+	default:
+		return 0;
+	}
+}
+
+static inline int __nlm_cmp_addr4(const struct sockaddr *sap1,
+				  const struct sockaddr *sap2)
+{
+	const struct sockaddr_in *sin1 = (const struct sockaddr_in *)sap1;
+	const struct sockaddr_in *sin2 = (const struct sockaddr_in *)sap2;
 	return sin1->sin_addr.s_addr == sin2->sin_addr.s_addr;
 }
 
+static inline int __nlm_cmp_addr6(const struct sockaddr *sap1,
+				  const struct sockaddr *sap2)
+{
+	const struct sockaddr_in6 *sin1 = (const struct sockaddr_in6 *)sap1;
+	const struct sockaddr_in6 *sin2 = (const struct sockaddr_in6 *)sap2;
+	return ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr);
+}
+
+/*
+ * Compare two host addresses
+ *
+ * Return TRUE if the addresses are the same; otherwise FALSE.
+ */
+static inline int nlm_cmp_addr(const struct sockaddr *sap1,
+			       const struct sockaddr *sap2)
+{
+	if (sap1->sa_family == sap2->sa_family) {
+		switch (sap1->sa_family) {
+		case AF_INET:
+			return __nlm_cmp_addr4(sap1, sap2);
+		case AF_INET6:
+			return __nlm_cmp_addr6(sap1, sap2);
+		}
+	}
+	return 0;
+}
+
 /*
  * Compare two NLM locks.
  * When the second lock is of type F_UNLCK, this acts like a wildcard.

include/linux/lockd/xdr.h

@@ -81,8 +81,6 @@ struct nlm_reboot {
 	unsigned int	len;
 	u32		state;
 	__be32		addr;
-	__be32		vers;
-	__be32		proto;
 };
 
 /*

include/linux/nfsd/nfsd.h

@@ -38,6 +38,7 @@
 #define NFSD_MAY_LOCK		32
 #define NFSD_MAY_OWNER_OVERRIDE	64
 #define NFSD_MAY_LOCAL_ACCESS	128 /* IRIX doing local access check on device special file*/
+#define NFSD_MAY_BYPASS_GSS_ON_ROOT 256
 
 #define NFSD_MAY_CREATE		(NFSD_MAY_EXEC|NFSD_MAY_WRITE)
 #define NFSD_MAY_REMOVE		(NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC)
@@ -125,7 +126,7 @@ int		nfsd_truncate(struct svc_rqst *, struct svc_fh *,
 __be32		nfsd_readdir(struct svc_rqst *, struct svc_fh *,
 			     loff_t *, struct readdir_cd *, filldir_t);
 __be32		nfsd_statfs(struct svc_rqst *, struct svc_fh *,
-				struct kstatfs *);
+				struct kstatfs *, int access);
 
 int		nfsd_notify_change(struct inode *, struct iattr *);
 __be32		nfsd_permission(struct svc_rqst *, struct svc_export *,

include/linux/sunrpc/clnt.h

@@ -104,6 +104,7 @@ struct rpc_create_args {
 	const struct rpc_timeout *timeout;
 	char			*servername;
 	struct rpc_program	*program;
+	u32			prognumber;	/* overrides program->number */
 	u32			version;
 	rpc_authflavor_t	authflavor;
 	unsigned long		flags;
@@ -124,10 +125,10 @@ struct rpc_clnt *rpc_clone_client(struct rpc_clnt *);
 void		rpc_shutdown_client(struct rpc_clnt *);
 void		rpc_release_client(struct rpc_clnt *);
 
-int		rpcb_register(u32, u32, int, unsigned short, int *);
+int		rpcb_register(u32, u32, int, unsigned short);
 int		rpcb_v4_register(const u32 program, const u32 version,
 				 const struct sockaddr *address,
-				 const char *netid, int *result);
+				 const char *netid);
 int		rpcb_getport_sync(struct sockaddr_in *, u32, u32, int);
 void		rpcb_getport_async(struct rpc_task *);
 

include/linux/sunrpc/svc.h

@@ -66,6 +66,7 @@ struct svc_serv {
 	struct list_head	sv_tempsocks;	/* all temporary sockets */
 	int			sv_tmpcnt;	/* count of temporary sockets */
 	struct timer_list	sv_temptimer;	/* timer for aging temporary sockets */
+	sa_family_t		sv_family;	/* listener's address family */
 
 	char *			sv_name;	/* service name */
 
@@ -265,17 +266,17 @@ struct svc_rqst {
 /*
  * Rigorous type checking on sockaddr type conversions
  */
-static inline struct sockaddr_in *svc_addr_in(struct svc_rqst *rqst)
+static inline struct sockaddr_in *svc_addr_in(const struct svc_rqst *rqst)
 {
 	return (struct sockaddr_in *) &rqst->rq_addr;
 }
 
-static inline struct sockaddr_in6 *svc_addr_in6(struct svc_rqst *rqst)
+static inline struct sockaddr_in6 *svc_addr_in6(const struct svc_rqst *rqst)
 {
 	return (struct sockaddr_in6 *) &rqst->rq_addr;
 }
 
-static inline struct sockaddr *svc_addr(struct svc_rqst *rqst)
+static inline struct sockaddr *svc_addr(const struct svc_rqst *rqst)
 {
 	return (struct sockaddr *) &rqst->rq_addr;
 }
@@ -381,18 +382,20 @@ struct svc_procedure {
 /*
  * Function prototypes.
  */
-struct svc_serv *  svc_create(struct svc_program *, unsigned int,
-			      void (*shutdown)(struct svc_serv*));
+struct svc_serv *svc_create(struct svc_program *, unsigned int, sa_family_t,
+			    void (*shutdown)(struct svc_serv *));
 struct svc_rqst *svc_prepare_thread(struct svc_serv *serv,
 					struct svc_pool *pool);
 void		   svc_exit_thread(struct svc_rqst *);
 struct svc_serv *  svc_create_pooled(struct svc_program *, unsigned int,
-			void (*shutdown)(struct svc_serv*), svc_thread_fn,
-			struct module *);
+			sa_family_t, void (*shutdown)(struct svc_serv *),
+			svc_thread_fn, struct module *);
 int		   svc_set_num_threads(struct svc_serv *, struct svc_pool *, int);
 void		   svc_destroy(struct svc_serv *);
 int		   svc_process(struct svc_rqst *);
-int		   svc_register(struct svc_serv *, int, unsigned short);
+int		   svc_register(const struct svc_serv *, const unsigned short,
+				const unsigned short);
+
 void		   svc_wake_up(struct svc_serv *);
 void		   svc_reserve(struct svc_rqst *rqstp, int space);
 struct svc_pool *  svc_pool_for_cpu(struct svc_serv *serv, int cpu);

include/linux/sunrpc/svc_rdma.h

@@ -72,6 +72,7 @@ extern atomic_t rdma_stat_sq_prod;
  */
 struct svc_rdma_op_ctxt {
 	struct svc_rdma_op_ctxt *read_hdr;
+	struct svc_rdma_fastreg_mr *frmr;
 	int hdr_count;
 	struct xdr_buf arg;
 	struct list_head dto_q;
@@ -103,16 +104,30 @@ struct svc_rdma_chunk_sge {
 	int start;		/* sge no for this chunk */
 	int count;		/* sge count for this chunk */
 };
+struct svc_rdma_fastreg_mr {
+	struct ib_mr *mr;
+	void *kva;
+	struct ib_fast_reg_page_list *page_list;
+	int page_list_len;
+	unsigned long access_flags;
+	unsigned long map_len;
+	enum dma_data_direction direction;
+	struct list_head frmr_list;
+};
 struct svc_rdma_req_map {
+	struct svc_rdma_fastreg_mr *frmr;
 	unsigned long count;
 	union {
 		struct kvec sge[RPCSVC_MAXPAGES];
 		struct svc_rdma_chunk_sge ch[RPCSVC_MAXPAGES];
 	};
 };
-
+#define RDMACTXT_F_FAST_UNREG	1
 #define RDMACTXT_F_LAST_CTXT	2
 
+#define	SVCRDMA_DEVCAP_FAST_REG		1	/* fast mr registration */
+#define	SVCRDMA_DEVCAP_READ_W_INV	2	/* read w/ invalidate */
+
 struct svcxprt_rdma {
 	struct svc_xprt      sc_xprt;		/* SVC transport structure */
 	struct rdma_cm_id    *sc_cm_id;		/* RDMA connection id */
@@ -136,6 +151,11 @@ struct svcxprt_rdma {
 	struct ib_cq         *sc_rq_cq;
 	struct ib_cq         *sc_sq_cq;
 	struct ib_mr         *sc_phys_mr;	/* MR for server memory */
+	u32		     sc_dev_caps;	/* distilled device caps */
+	u32		     sc_dma_lkey;	/* local dma key */
+	unsigned int	     sc_frmr_pg_list_len;
+	struct list_head     sc_frmr_q;
+	spinlock_t	     sc_frmr_q_lock;
 
 	spinlock_t	     sc_lock;		/* transport lock */
 
@@ -192,8 +212,13 @@ extern int svc_rdma_post_recv(struct svcxprt_rdma *);
 extern int svc_rdma_create_listen(struct svc_serv *, int, struct sockaddr *);
 extern struct svc_rdma_op_ctxt *svc_rdma_get_context(struct svcxprt_rdma *);
 extern void svc_rdma_put_context(struct svc_rdma_op_ctxt *, int);
+extern void svc_rdma_unmap_dma(struct svc_rdma_op_ctxt *ctxt);
 extern struct svc_rdma_req_map *svc_rdma_get_req_map(void);
 extern void svc_rdma_put_req_map(struct svc_rdma_req_map *);
+extern int svc_rdma_fastreg(struct svcxprt_rdma *, struct svc_rdma_fastreg_mr *);
+extern struct svc_rdma_fastreg_mr *svc_rdma_get_frmr(struct svcxprt_rdma *);
+extern void svc_rdma_put_frmr(struct svcxprt_rdma *,
+			      struct svc_rdma_fastreg_mr *);
 extern void svc_sq_reap(struct svcxprt_rdma *);
 extern void svc_rq_reap(struct svcxprt_rdma *);
 extern struct svc_xprt_class svc_rdma_class;

include/linux/sunrpc/svcsock.h

@@ -39,10 +39,7 @@ int		svc_send(struct svc_rqst *);
 void		svc_drop(struct svc_rqst *);
 void		svc_sock_update_bufs(struct svc_serv *serv);
 int		svc_sock_names(char *buf, struct svc_serv *serv, char *toclose);
-int		svc_addsock(struct svc_serv *serv,
-			    int fd,
-			    char *name_return,
-			    int *proto);
+int		svc_addsock(struct svc_serv *serv, int fd, char *name_return);
 void		svc_init_xprt_sock(void);
 void		svc_cleanup_xprt_sock(void);
 

kernel/sys_ni.c

@@ -125,6 +125,7 @@ cond_syscall(sys_vm86old);
 cond_syscall(sys_vm86);
 cond_syscall(compat_sys_ipc);
 cond_syscall(compat_sys_sysctl);
+cond_syscall(sys_flock);
 
 /* arch-specific weak syscall entries */
 cond_syscall(sys_pciconfig_read);

kernel/sysctl.c

@@ -96,7 +96,7 @@ static int sixty = 60;
 static int neg_one = -1;
 #endif
 
-#ifdef CONFIG_MMU
+#if defined(CONFIG_MMU) && defined(CONFIG_FILE_LOCKING)
 static int two = 2;
 #endif
 
@@ -1248,6 +1248,7 @@ static struct ctl_table fs_table[] = {
 		.extra1		= &minolduid,
 		.extra2		= &maxolduid,
 	},
+#ifdef CONFIG_FILE_LOCKING
 	{
 		.ctl_name	= FS_LEASES,
 		.procname	= "leases-enable",
@@ -1256,6 +1257,7 @@ static struct ctl_table fs_table[] = {
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec,
 	},
+#endif
 #ifdef CONFIG_DNOTIFY
 	{
 		.ctl_name	= FS_DIR_NOTIFY,
@@ -1267,6 +1269,7 @@ static struct ctl_table fs_table[] = {
 	},
 #endif
 #ifdef CONFIG_MMU
+#ifdef CONFIG_FILE_LOCKING
 	{
 		.ctl_name	= FS_LEASE_TIME,
 		.procname	= "lease-break-time",
@@ -1278,6 +1281,7 @@ static struct ctl_table fs_table[] = {
 		.extra1		= &zero,
 		.extra2		= &two,
 	},
+#endif
 	{
 		.procname	= "aio-nr",
 		.data		= &aio_nr,

net/sunrpc/clnt.c

@@ -174,7 +174,7 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru
 	clnt->cl_procinfo = version->procs;
 	clnt->cl_maxproc  = version->nrprocs;
 	clnt->cl_protname = program->name;
-	clnt->cl_prog     = program->number;
+	clnt->cl_prog     = args->prognumber ? : program->number;
 	clnt->cl_vers     = version->number;
 	clnt->cl_stats    = program->stats;
 	clnt->cl_metrics  = rpc_alloc_iostats(clnt);

net/sunrpc/rpcb_clnt.c

@@ -20,6 +20,7 @@
 #include <linux/in6.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
+#include <net/ipv6.h>
 
 #include <linux/sunrpc/clnt.h>
 #include <linux/sunrpc/sched.h>
@@ -176,13 +177,12 @@ static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr,
 }
 
 static int rpcb_register_call(struct sockaddr *addr, size_t addrlen,
-			      u32 version, struct rpc_message *msg,
-			      int *result)
+			      u32 version, struct rpc_message *msg)
 {
 	struct rpc_clnt *rpcb_clnt;
-	int error = 0;
+	int result, error = 0;
 
-	*result = 0;
+	msg->rpc_resp = &result;
 
 	rpcb_clnt = rpcb_create_local(addr, addrlen, version);
 	if (!IS_ERR(rpcb_clnt)) {
@@ -191,12 +191,15 @@ static int rpcb_register_call(struct sockaddr *addr, size_t addrlen,
 	} else
 		error = PTR_ERR(rpcb_clnt);
 
-	if (error < 0)
+	if (error < 0) {
 		printk(KERN_WARNING "RPC: failed to contact local rpcbind "
 				"server (errno %d).\n", -error);
-	dprintk("RPC:       registration status %d/%d\n", error, *result);
-
 		return error;
+	}
+
+	if (!result)
+		return -EACCES;
+	return 0;
 }
 
 /**
@@ -205,7 +208,11 @@ static int rpcb_register_call(struct sockaddr *addr, size_t addrlen,
  * @vers: RPC version number to bind
  * @prot: transport protocol to register
  * @port: port value to register
- * @okay: OUT: result code
+ *
+ * Returns zero if the registration request was dispatched successfully
+ * and the rpcbind daemon returned success.  Otherwise, returns an errno
+ * value that reflects the nature of the error (request could not be
+ * dispatched, timed out, or rpcbind returned an error).
  *
  * RPC services invoke this function to advertise their contact
  * information via the system's rpcbind daemon.  RPC services
@@ -217,15 +224,6 @@ static int rpcb_register_call(struct sockaddr *addr, size_t addrlen,
  * all registered transports for [program, version] from the local
  * rpcbind database.
  *
- * Returns zero if the registration request was dispatched
- * successfully and a reply was received.  The rpcbind daemon's
- * boolean result code is stored in *okay.
- *
- * Returns an errno value and sets *result to zero if there was
- * some problem that prevented the rpcbind request from being
- * dispatched, or if the rpcbind daemon did not respond within
- * the timeout.
- *
  * This function uses rpcbind protocol version 2 to contact the
  * local rpcbind daemon.
  *
@@ -236,7 +234,7 @@ static int rpcb_register_call(struct sockaddr *addr, size_t addrlen,
  * IN6ADDR_ANY (ie available for all AF_INET and AF_INET6
  * addresses).
  */
-int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port, int *okay)
+int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port)
 {
 	struct rpcbind_args map = {
 		.r_prog		= prog,
@@ -246,7 +244,6 @@ int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port, int *okay)
 	};
 	struct rpc_message msg = {
 		.rpc_argp	= &map,
-		.rpc_resp	= okay,
 	};
 
 	dprintk("RPC:       %sregistering (%u, %u, %d, %u) with local "
@@ -259,7 +256,7 @@ int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port, int *okay)
 
 	return rpcb_register_call((struct sockaddr *)&rpcb_inaddr_loopback,
 					sizeof(rpcb_inaddr_loopback),
-					RPCBVERS_2, &msg, okay);
+					RPCBVERS_2, &msg);
 }
 
 /*
@@ -290,7 +287,7 @@ static int rpcb_register_netid4(struct sockaddr_in *address_to_register,
 
 	return rpcb_register_call((struct sockaddr *)&rpcb_inaddr_loopback,
 					sizeof(rpcb_inaddr_loopback),
-					RPCBVERS_4, msg, msg->rpc_resp);
+					RPCBVERS_4, msg);
 }
 
 /*
@@ -304,8 +301,11 @@ static int rpcb_register_netid6(struct sockaddr_in6 *address_to_register,
 	char buf[64];
 
 	/* Construct AF_INET6 universal address */
-	snprintf(buf, sizeof(buf),
-			NIP6_FMT".%u.%u",
+	if (ipv6_addr_any(&address_to_register->sin6_addr))
+		snprintf(buf, sizeof(buf), "::.%u.%u",
+				port >> 8, port & 0xff);
+	else
+		snprintf(buf, sizeof(buf), NIP6_FMT".%u.%u",
 				NIP6(address_to_register->sin6_addr),
 				port >> 8, port & 0xff);
 	map->r_addr = buf;
@@ -321,7 +321,7 @@ static int rpcb_register_netid6(struct sockaddr_in6 *address_to_register,
 
 	return rpcb_register_call((struct sockaddr *)&rpcb_in6addr_loopback,
 					sizeof(rpcb_in6addr_loopback),
-					RPCBVERS_4, msg, msg->rpc_resp);
+					RPCBVERS_4, msg);
 }
 
 /**
@@ -330,7 +330,11 @@ static int rpcb_register_netid6(struct sockaddr_in6 *address_to_register,
  * @version: RPC version number of service to (un)register
  * @address: address family, IP address, and port to (un)register
  * @netid: netid of transport protocol to (un)register
- * @result: result code from rpcbind RPC call
+ *
+ * Returns zero if the registration request was dispatched successfully
+ * and the rpcbind daemon returned success.  Otherwise, returns an errno
+ * value that reflects the nature of the error (request could not be
+ * dispatched, timed out, or rpcbind returned an error).
  *
  * RPC services invoke this function to advertise their contact
  * information via the system's rpcbind daemon.  RPC services
@@ -342,15 +346,6 @@ static int rpcb_register_netid6(struct sockaddr_in6 *address_to_register,
  * to zero.  Callers pass a netid of "" to unregister all
  * transport netids associated with [program, version, address].
  *
- * Returns zero if the registration request was dispatched
- * successfully and a reply was received.  The rpcbind daemon's
- * result code is stored in *result.
- *
- * Returns an errno value and sets *result to zero if there was
- * some problem that prevented the rpcbind request from being
- * dispatched, or if the rpcbind daemon did not respond within
- * the timeout.
- *
  * This function uses rpcbind protocol version 4 to contact the
  * local rpcbind daemon.  The local rpcbind daemon must support
  * version 4 of the rpcbind protocol in order for these functions
@@ -372,8 +367,7 @@ static int rpcb_register_netid6(struct sockaddr_in6 *address_to_register,
  * advertises the service on all IPv4 and IPv6 addresses.
  */
 int rpcb_v4_register(const u32 program, const u32 version,
-		     const struct sockaddr *address, const char *netid,
-		     int *result)
+		     const struct sockaddr *address, const char *netid)
 {
 	struct rpcbind_args map = {
 		.r_prog		= program,
@@ -383,11 +377,8 @@ int rpcb_v4_register(const u32 program, const u32 version,
 	};
 	struct rpc_message msg = {
 		.rpc_argp	= &map,
-		.rpc_resp	= result,
 	};
 
-	*result = 0;
-
 	switch (address->sa_family) {
 	case AF_INET:
 		return rpcb_register_netid4((struct sockaddr_in *)address,
@@ -633,7 +624,7 @@ static void rpcb_getport_done(struct rpc_task *child, void *data)
 static int rpcb_encode_mapping(struct rpc_rqst *req, __be32 *p,
 			       struct rpcbind_args *rpcb)
 {
-	dprintk("RPC:       rpcb_encode_mapping(%u, %u, %d, %u)\n",
+	dprintk("RPC:       encoding rpcb request (%u, %u, %d, %u)\n",
 			rpcb->r_prog, rpcb->r_vers, rpcb->r_prot, rpcb->r_port);
 	*p++ = htonl(rpcb->r_prog);
 	*p++ = htonl(rpcb->r_vers);
@@ -648,7 +639,7 @@ static int rpcb_decode_getport(struct rpc_rqst *req, __be32 *p,
 			       unsigned short *portp)
 {
 	*portp = (unsigned short) ntohl(*p++);
-	dprintk("RPC:       rpcb_decode_getport result %u\n",
+	dprintk("RPC:       rpcb getport result: %u\n",
 			*portp);
 	return 0;
 }
@@ -657,7 +648,7 @@ static int rpcb_decode_set(struct rpc_rqst *req, __be32 *p,
 			   unsigned int *boolp)
 {
 	*boolp = (unsigned int) ntohl(*p++);
-	dprintk("RPC:       rpcb_decode_set: call %s\n",
+	dprintk("RPC:       rpcb set/unset call %s\n",
 			(*boolp ? "succeeded" : "failed"));
 	return 0;
 }
@@ -665,7 +656,7 @@ static int rpcb_decode_set(struct rpc_rqst *req, __be32 *p,
 static int rpcb_encode_getaddr(struct rpc_rqst *req, __be32 *p,
 			       struct rpcbind_args *rpcb)
 {
-	dprintk("RPC:       rpcb_encode_getaddr(%u, %u, %s)\n",
+	dprintk("RPC:       encoding rpcb request (%u, %u, %s)\n",
 			rpcb->r_prog, rpcb->r_vers, rpcb->r_addr);
 	*p++ = htonl(rpcb->r_prog);
 	*p++ = htonl(rpcb->r_vers);

net/sunrpc/svc.c

@@ -28,6 +28,8 @@
 
 #define RPCDBG_FACILITY	RPCDBG_SVCDSP
 
+static void svc_unregister(const struct svc_serv *serv);
+
 #define svc_serv_is_pooled(serv)    ((serv)->sv_function)
 
 /*
@@ -357,7 +359,7 @@ svc_pool_for_cpu(struct svc_serv *serv, int cpu)
  */
 static struct svc_serv *
 __svc_create(struct svc_program *prog, unsigned int bufsize, int npools,
-	   void (*shutdown)(struct svc_serv *serv))
+	   sa_family_t family, void (*shutdown)(struct svc_serv *serv))
 {
 	struct svc_serv	*serv;
 	unsigned int vers;
@@ -366,6 +368,7 @@ __svc_create(struct svc_program *prog, unsigned int bufsize, int npools,
 
 	if (!(serv = kzalloc(sizeof(*serv), GFP_KERNEL)))
 		return NULL;
+	serv->sv_family    = family;
 	serv->sv_name      = prog->pg_name;
 	serv->sv_program   = prog;
 	serv->sv_nrthreads = 1;
@@ -416,30 +419,29 @@ __svc_create(struct svc_program *prog, unsigned int bufsize, int npools,
 		spin_lock_init(&pool->sp_lock);
 	}
 
-
 	/* Remove any stale portmap registrations */
-	svc_register(serv, 0, 0);
+	svc_unregister(serv);
 
 	return serv;
 }
 
 struct svc_serv *
 svc_create(struct svc_program *prog, unsigned int bufsize,
-		void (*shutdown)(struct svc_serv *serv))
+		sa_family_t family, void (*shutdown)(struct svc_serv *serv))
 {
-	return __svc_create(prog, bufsize, /*npools*/1, shutdown);
+	return __svc_create(prog, bufsize, /*npools*/1, family, shutdown);
 }
 EXPORT_SYMBOL(svc_create);
 
 struct svc_serv *
 svc_create_pooled(struct svc_program *prog, unsigned int bufsize,
-		void (*shutdown)(struct svc_serv *serv),
+		  sa_family_t family, void (*shutdown)(struct svc_serv *serv),
 		  svc_thread_fn func, struct module *mod)
 {
 	struct svc_serv *serv;
 	unsigned int npools = svc_pool_map_get();
 
-	serv = __svc_create(prog, bufsize, npools, shutdown);
+	serv = __svc_create(prog, bufsize, npools, family, shutdown);
 
 	if (serv != NULL) {
 		serv->sv_function = func;
@@ -486,8 +488,7 @@ svc_destroy(struct svc_serv *serv)
 	if (svc_serv_is_pooled(serv))
 		svc_pool_map_put();
 
-	/* Unregister service with the portmapper */
-	svc_register(serv, 0, 0);
+	svc_unregister(serv);
 	kfree(serv->sv_pools);
 	kfree(serv);
 }
@@ -718,55 +719,245 @@ svc_exit_thread(struct svc_rqst *rqstp)
 }
 EXPORT_SYMBOL(svc_exit_thread);
 
+#ifdef CONFIG_SUNRPC_REGISTER_V4
+
 /*
- * Register an RPC service with the local portmapper.
- * To unregister a service, call this routine with
- * proto and port == 0.
+ * Register an "inet" protocol family netid with the local
+ * rpcbind daemon via an rpcbind v4 SET request.
+ *
+ * No netconfig infrastructure is available in the kernel, so
+ * we map IP_ protocol numbers to netids by hand.
+ *
+ * Returns zero on success; a negative errno value is returned
+ * if any error occurs.
  */
-int
-svc_register(struct svc_serv *serv, int proto, unsigned short port)
+static int __svc_rpcb_register4(const u32 program, const u32 version,
+				const unsigned short protocol,
+				const unsigned short port)
+{
+	struct sockaddr_in sin = {
+		.sin_family		= AF_INET,
+		.sin_addr.s_addr	= htonl(INADDR_ANY),
+		.sin_port		= htons(port),
+	};
+	char *netid;
+
+	switch (protocol) {
+	case IPPROTO_UDP:
+		netid = RPCBIND_NETID_UDP;
+		break;
+	case IPPROTO_TCP:
+		netid = RPCBIND_NETID_TCP;
+		break;
+	default:
+		return -EPROTONOSUPPORT;
+	}
+
+	return rpcb_v4_register(program, version,
+				(struct sockaddr *)&sin, netid);
+}
+
+/*
+ * Register an "inet6" protocol family netid with the local
+ * rpcbind daemon via an rpcbind v4 SET request.
+ *
+ * No netconfig infrastructure is available in the kernel, so
+ * we map IP_ protocol numbers to netids by hand.
+ *
+ * Returns zero on success; a negative errno value is returned
+ * if any error occurs.
+ */
+static int __svc_rpcb_register6(const u32 program, const u32 version,
+				const unsigned short protocol,
+				const unsigned short port)
+{
+	struct sockaddr_in6 sin6 = {
+		.sin6_family		= AF_INET6,
+		.sin6_addr		= IN6ADDR_ANY_INIT,
+		.sin6_port		= htons(port),
+	};
+	char *netid;
+
+	switch (protocol) {
+	case IPPROTO_UDP:
+		netid = RPCBIND_NETID_UDP6;
+		break;
+	case IPPROTO_TCP:
+		netid = RPCBIND_NETID_TCP6;
+		break;
+	default:
+		return -EPROTONOSUPPORT;
+	}
+
+	return rpcb_v4_register(program, version,
+				(struct sockaddr *)&sin6, netid);
+}
+
+/*
+ * Register a kernel RPC service via rpcbind version 4.
+ *
+ * Returns zero on success; a negative errno value is returned
+ * if any error occurs.
+ */
+static int __svc_register(const u32 program, const u32 version,
+			  const sa_family_t family,
+			  const unsigned short protocol,
+			  const unsigned short port)
+{
+	int error;
+
+	switch (family) {
+	case AF_INET:
+		return __svc_rpcb_register4(program, version,
+						protocol, port);
+	case AF_INET6:
+		error = __svc_rpcb_register6(program, version,
+						protocol, port);
+		if (error < 0)
+			return error;
+
+		/*
+		 * Work around bug in some versions of Linux rpcbind
+		 * which don't allow registration of both inet and
+		 * inet6 netids.
+		 *
+		 * Error return ignored for now.
+		 */
+		__svc_rpcb_register4(program, version,
+						protocol, port);
+		return 0;
+	}
+
+	return -EAFNOSUPPORT;
+}
+
+#else	/* CONFIG_SUNRPC_REGISTER_V4 */
+
+/*
+ * Register a kernel RPC service via rpcbind version 2.
+ *
+ * Returns zero on success; a negative errno value is returned
+ * if any error occurs.
+ */
+static int __svc_register(const u32 program, const u32 version,
+			  sa_family_t family,
+			  const unsigned short protocol,
+			  const unsigned short port)
+{
+	if (family != AF_INET)
+		return -EAFNOSUPPORT;
+
+	return rpcb_register(program, version, protocol, port);
+}
+
+#endif /* CONFIG_SUNRPC_REGISTER_V4 */
+
+/**
+ * svc_register - register an RPC service with the local portmapper
+ * @serv: svc_serv struct for the service to register
+ * @proto: transport protocol number to advertise
+ * @port: port to advertise
+ *
+ * Service is registered for any address in serv's address family
+ */
+int svc_register(const struct svc_serv *serv, const unsigned short proto,
+		 const unsigned short port)
 {
 	struct svc_program	*progp;
-	unsigned long		flags;
 	unsigned int		i;
-	int			error = 0, dummy;
+	int			error = 0;
 
-	if (!port)
-		clear_thread_flag(TIF_SIGPENDING);
+	BUG_ON(proto == 0 && port == 0);
 
 	for (progp = serv->sv_program; progp; progp = progp->pg_next) {
 		for (i = 0; i < progp->pg_nvers; i++) {
 			if (progp->pg_vers[i] == NULL)
 				continue;
 
-			dprintk("svc: svc_register(%s, %s, %d, %d)%s\n",
+			dprintk("svc: svc_register(%sv%d, %s, %u, %u)%s\n",
 					progp->pg_name,
+					i,
 					proto == IPPROTO_UDP?  "udp" : "tcp",
 					port,
-					i,
+					serv->sv_family,
 					progp->pg_vers[i]->vs_hidden?
 						" (but not telling portmap)" : "");
 
 			if (progp->pg_vers[i]->vs_hidden)
 				continue;
 
-			error = rpcb_register(progp->pg_prog, i, proto, port, &dummy);
+			error = __svc_register(progp->pg_prog, i,
+						serv->sv_family, proto, port);
 			if (error < 0)
 				break;
-			if (port && !dummy) {
-				error = -EACCES;
-				break;
 		}
 	}
+
+	return error;
+}
+
+#ifdef CONFIG_SUNRPC_REGISTER_V4
+
+static void __svc_unregister(const u32 program, const u32 version,
+			     const char *progname)
+{
+	struct sockaddr_in6 sin6 = {
+		.sin6_family		= AF_INET6,
+		.sin6_addr		= IN6ADDR_ANY_INIT,
+		.sin6_port		= 0,
+	};
+	int error;
+
+	error = rpcb_v4_register(program, version,
+				(struct sockaddr *)&sin6, "");
+	dprintk("svc: %s(%sv%u), error %d\n",
+			__func__, progname, version, error);
+}
+
+#else	/* CONFIG_SUNRPC_REGISTER_V4 */
+
+static void __svc_unregister(const u32 program, const u32 version,
+			     const char *progname)
+{
+	int error;
+
+	error = rpcb_register(program, version, 0, 0);
+	dprintk("svc: %s(%sv%u), error %d\n",
+			__func__, progname, version, error);
+}
+
+#endif	/* CONFIG_SUNRPC_REGISTER_V4 */
+
+/*
+ * All netids, bind addresses and ports registered for [program, version]
+ * are removed from the local rpcbind database (if the service is not
+ * hidden) to make way for a new instance of the service.
+ *
+ * The result of unregistration is reported via dprintk for those who want
+ * verification of the result, but is otherwise not important.
+ */
+static void svc_unregister(const struct svc_serv *serv)
+{
+	struct svc_program *progp;
+	unsigned long flags;
+	unsigned int i;
+
+	clear_thread_flag(TIF_SIGPENDING);
+
+	for (progp = serv->sv_program; progp; progp = progp->pg_next) {
+		for (i = 0; i < progp->pg_nvers; i++) {
+			if (progp->pg_vers[i] == NULL)
+				continue;
+			if (progp->pg_vers[i]->vs_hidden)
+				continue;
+
+			__svc_unregister(progp->pg_prog, i, progp->pg_name);
+		}
 	}
 
-	if (!port) {
 	spin_lock_irqsave(&current->sighand->siglock, flags);
 	recalc_sigpending();
 	spin_unlock_irqrestore(&current->sighand->siglock, flags);
-	}
-
-	return error;
 }
 
 /*

net/sunrpc/svc_xprt.c

@@ -159,15 +159,44 @@ void svc_xprt_init(struct svc_xprt_class *xcl, struct svc_xprt *xprt,
 }
 EXPORT_SYMBOL_GPL(svc_xprt_init);
 
-int svc_create_xprt(struct svc_serv *serv, char *xprt_name, unsigned short port,
-		    int flags)
+static struct svc_xprt *__svc_xpo_create(struct svc_xprt_class *xcl,
+					 struct svc_serv *serv,
+					 unsigned short port, int flags)
 {
-	struct svc_xprt_class *xcl;
 	struct sockaddr_in sin = {
 		.sin_family		= AF_INET,
 		.sin_addr.s_addr	= htonl(INADDR_ANY),
 		.sin_port		= htons(port),
 	};
+	struct sockaddr_in6 sin6 = {
+		.sin6_family		= AF_INET6,
+		.sin6_addr		= IN6ADDR_ANY_INIT,
+		.sin6_port		= htons(port),
+	};
+	struct sockaddr *sap;
+	size_t len;
+
+	switch (serv->sv_family) {
+	case AF_INET:
+		sap = (struct sockaddr *)&sin;
+		len = sizeof(sin);
+		break;
+	case AF_INET6:
+		sap = (struct sockaddr *)&sin6;
+		len = sizeof(sin6);
+		break;
+	default:
+		return ERR_PTR(-EAFNOSUPPORT);
+	}
+
+	return xcl->xcl_ops->xpo_create(serv, sap, len, flags);
+}
+
+int svc_create_xprt(struct svc_serv *serv, char *xprt_name, unsigned short port,
+		    int flags)
+{
+	struct svc_xprt_class *xcl;
+
 	dprintk("svc: creating transport %s[%d]\n", xprt_name, port);
 	spin_lock(&svc_xprt_class_lock);
 	list_for_each_entry(xcl, &svc_xprt_class_list, xcl_list) {
@@ -180,9 +209,7 @@ int svc_create_xprt(struct svc_serv *serv, char *xprt_name, unsigned short port,
 			goto err;
 
 		spin_unlock(&svc_xprt_class_lock);
-		newxprt = xcl->xcl_ops->
-			xpo_create(serv, (struct sockaddr *)&sin, sizeof(sin),
-				   flags);
+		newxprt = __svc_xpo_create(xcl, serv, port, flags);
 		if (IS_ERR(newxprt)) {
 			module_put(xcl->xcl_owner);
 			return PTR_ERR(newxprt);

net/sunrpc/svcsock.c

@@ -1114,6 +1114,7 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv,
 	struct svc_sock	*svsk;
 	struct sock	*inet;
 	int		pmap_register = !(flags & SVC_SOCK_ANONYMOUS);
+	int		val;
 
 	dprintk("svc: svc_setup_socket %p\n", sock);
 	if (!(svsk = kzalloc(sizeof(*svsk), GFP_KERNEL))) {
@@ -1146,6 +1147,18 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv,
 	else
 		svc_tcp_init(svsk, serv);
 
+	/*
+	 * We start one listener per sv_serv.  We want AF_INET
+	 * requests to be automatically shunted to our AF_INET6
+	 * listener using a mapped IPv4 address.  Make sure
+	 * no-one starts an equivalent IPv4 listener, which
+	 * would steal our incoming connections.
+	 */
+	val = 0;
+	if (serv->sv_family == AF_INET6)
+		kernel_setsockopt(sock, SOL_IPV6, IPV6_V6ONLY,
+					(char *)&val, sizeof(val));
+
 	dprintk("svc: svc_setup_socket created %p (inet %p)\n",
 				svsk, svsk->sk_sk);
 
@@ -1154,8 +1167,7 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv,
 
 int svc_addsock(struct svc_serv *serv,
 		int fd,
-		char *name_return,
-		int *proto)
+		char *name_return)
 {
 	int err = 0;
 	struct socket *so = sockfd_lookup(fd, &err);
@@ -1190,7 +1202,6 @@ int svc_addsock(struct svc_serv *serv,
 		sockfd_put(so);
 		return err;
 	}
-	if (proto) *proto = so->sk->sk_protocol;
 	return one_sock_name(name_return, svsk);
 }
 EXPORT_SYMBOL_GPL(svc_addsock);

net/sunrpc/xprtrdma/svc_rdma_recvfrom.c

@@ -116,7 +116,7 @@ static void rdma_build_arg_xdr(struct svc_rqst *rqstp,
  *
  * Assumptions:
  * - chunk[0]->position points to pages[0] at an offset of 0
- * - pages[] is not physically or virtually contigous and consists of
+ * - pages[] is not physically or virtually contiguous and consists of
  *   PAGE_SIZE elements.
  *
  * Output:
@@ -125,7 +125,7 @@ static void rdma_build_arg_xdr(struct svc_rqst *rqstp,
  *   chunk in the read list
  *
  */
-static int rdma_rcl_to_sge(struct svcxprt_rdma *xprt,
+static int map_read_chunks(struct svcxprt_rdma *xprt,
 			   struct svc_rqst *rqstp,
 			   struct svc_rdma_op_ctxt *head,
 			   struct rpcrdma_msg *rmsgp,
@@ -211,8 +211,99 @@ static int rdma_rcl_to_sge(struct svcxprt_rdma *xprt,
 	return sge_no;
 }
 
-static void rdma_set_ctxt_sge(struct svcxprt_rdma *xprt,
+/* Map a read-chunk-list to an XDR and fast register the page-list.
+ *
+ * Assumptions:
+ * - chunk[0]	position points to pages[0] at an offset of 0
+ * - pages[]	will be made physically contiguous by creating a one-off memory
+ *		region using the fastreg verb.
+ * - byte_count is # of bytes in read-chunk-list
+ * - ch_count	is # of chunks in read-chunk-list
+ *
+ * Output:
+ * - sge array pointing into pages[] array.
+ * - chunk_sge array specifying sge index and count for each
+ *   chunk in the read list
+ */
+static int fast_reg_read_chunks(struct svcxprt_rdma *xprt,
+				struct svc_rqst *rqstp,
+				struct svc_rdma_op_ctxt *head,
+				struct rpcrdma_msg *rmsgp,
+				struct svc_rdma_req_map *rpl_map,
+				struct svc_rdma_req_map *chl_map,
+				int ch_count,
+				int byte_count)
+{
+	int page_no;
+	int ch_no;
+	u32 offset;
+	struct rpcrdma_read_chunk *ch;
+	struct svc_rdma_fastreg_mr *frmr;
+	int ret = 0;
+
+	frmr = svc_rdma_get_frmr(xprt);
+	if (IS_ERR(frmr))
+		return -ENOMEM;
+
+	head->frmr = frmr;
+	head->arg.head[0] = rqstp->rq_arg.head[0];
+	head->arg.tail[0] = rqstp->rq_arg.tail[0];
+	head->arg.pages = &head->pages[head->count];
+	head->hdr_count = head->count; /* save count of hdr pages */
+	head->arg.page_base = 0;
+	head->arg.page_len = byte_count;
+	head->arg.len = rqstp->rq_arg.len + byte_count;
+	head->arg.buflen = rqstp->rq_arg.buflen + byte_count;
+
+	/* Fast register the page list */
+	frmr->kva = page_address(rqstp->rq_arg.pages[0]);
+	frmr->direction = DMA_FROM_DEVICE;
+	frmr->access_flags = (IB_ACCESS_LOCAL_WRITE|IB_ACCESS_REMOTE_WRITE);
+	frmr->map_len = byte_count;
+	frmr->page_list_len = PAGE_ALIGN(byte_count) >> PAGE_SHIFT;
+	for (page_no = 0; page_no < frmr->page_list_len; page_no++) {
+		frmr->page_list->page_list[page_no] =
+			ib_dma_map_single(xprt->sc_cm_id->device,
+					  page_address(rqstp->rq_arg.pages[page_no]),
+					  PAGE_SIZE, DMA_TO_DEVICE);
+		if (ib_dma_mapping_error(xprt->sc_cm_id->device,
+					 frmr->page_list->page_list[page_no]))
+			goto fatal_err;
+		atomic_inc(&xprt->sc_dma_used);
+		head->arg.pages[page_no] = rqstp->rq_arg.pages[page_no];
+	}
+	head->count += page_no;
+
+	/* rq_respages points one past arg pages */
+	rqstp->rq_respages = &rqstp->rq_arg.pages[page_no];
+
+	/* Create the reply and chunk maps */
+	offset = 0;
+	ch = (struct rpcrdma_read_chunk *)&rmsgp->rm_body.rm_chunks[0];
+	for (ch_no = 0; ch_no < ch_count; ch_no++) {
+		rpl_map->sge[ch_no].iov_base = frmr->kva + offset;
+		rpl_map->sge[ch_no].iov_len = ch->rc_target.rs_length;
+		chl_map->ch[ch_no].count = 1;
+		chl_map->ch[ch_no].start = ch_no;
+		offset += ch->rc_target.rs_length;
+		ch++;
+	}
+
+	ret = svc_rdma_fastreg(xprt, frmr);
+	if (ret)
+		goto fatal_err;
+
+	return ch_no;
+
+ fatal_err:
+	printk("svcrdma: error fast registering xdr for xprt %p", xprt);
+	svc_rdma_put_frmr(xprt, frmr);
+	return -EIO;
+}
+
+static int rdma_set_ctxt_sge(struct svcxprt_rdma *xprt,
 			     struct svc_rdma_op_ctxt *ctxt,
+			     struct svc_rdma_fastreg_mr *frmr,
 			     struct kvec *vec,
 			     u64 *sgl_offset,
 			     int count)
@@ -222,15 +313,26 @@ static void rdma_set_ctxt_sge(struct svcxprt_rdma *xprt,
 	ctxt->count = count;
 	ctxt->direction = DMA_FROM_DEVICE;
 	for (i = 0; i < count; i++) {
-		atomic_inc(&xprt->sc_dma_used);
+		ctxt->sge[i].length = 0; /* in case map fails */
+		if (!frmr) {
 			ctxt->sge[i].addr =
 				ib_dma_map_single(xprt->sc_cm_id->device,
-					  vec[i].iov_base, vec[i].iov_len,
+						  vec[i].iov_base,
+						  vec[i].iov_len,
 						  DMA_FROM_DEVICE);
+			if (ib_dma_mapping_error(xprt->sc_cm_id->device,
+						 ctxt->sge[i].addr))
+				return -EINVAL;
+			ctxt->sge[i].lkey = xprt->sc_dma_lkey;
+			atomic_inc(&xprt->sc_dma_used);
+		} else {
+			ctxt->sge[i].addr = (unsigned long)vec[i].iov_base;
+			ctxt->sge[i].lkey = frmr->mr->lkey;
+		}
 		ctxt->sge[i].length = vec[i].iov_len;
-		ctxt->sge[i].lkey = xprt->sc_phys_mr->lkey;
 		*sgl_offset = *sgl_offset + vec[i].iov_len;
 	}
+	return 0;
 }
 
 static int rdma_read_max_sge(struct svcxprt_rdma *xprt, int sge_count)
@@ -278,6 +380,7 @@ static int rdma_read_xdr(struct svcxprt_rdma *xprt,
 			 struct svc_rdma_op_ctxt *hdr_ctxt)
 {
 	struct ib_send_wr read_wr;
+	struct ib_send_wr inv_wr;
 	int err = 0;
 	int ch_no;
 	int ch_count;
@@ -301,9 +404,20 @@ static int rdma_read_xdr(struct svcxprt_rdma *xprt,
 	svc_rdma_rcl_chunk_counts(ch, &ch_count, &byte_count);
 	if (ch_count > RPCSVC_MAXPAGES)
 		return -EINVAL;
-	sge_count = rdma_rcl_to_sge(xprt, rqstp, hdr_ctxt, rmsgp,
-				    rpl_map, chl_map,
-				    ch_count, byte_count);
+
+	if (!xprt->sc_frmr_pg_list_len)
+		sge_count = map_read_chunks(xprt, rqstp, hdr_ctxt, rmsgp,
+					    rpl_map, chl_map, ch_count,
+					    byte_count);
+	else
+		sge_count = fast_reg_read_chunks(xprt, rqstp, hdr_ctxt, rmsgp,
+						 rpl_map, chl_map, ch_count,
+						 byte_count);
+	if (sge_count < 0) {
+		err = -EIO;
+		goto out;
+	}
+
 	sgl_offset = 0;
 	ch_no = 0;
 
@@ -312,13 +426,16 @@ static int rdma_read_xdr(struct svcxprt_rdma *xprt,
 next_sge:
 		ctxt = svc_rdma_get_context(xprt);
 		ctxt->direction = DMA_FROM_DEVICE;
+		ctxt->frmr = hdr_ctxt->frmr;
+		ctxt->read_hdr = NULL;
 		clear_bit(RDMACTXT_F_LAST_CTXT, &ctxt->flags);
+		clear_bit(RDMACTXT_F_FAST_UNREG, &ctxt->flags);
 
 		/* Prepare READ WR */
 		memset(&read_wr, 0, sizeof read_wr);
-		ctxt->wr_op = IB_WR_RDMA_READ;
 		read_wr.wr_id = (unsigned long)ctxt;
 		read_wr.opcode = IB_WR_RDMA_READ;
+		ctxt->wr_op = read_wr.opcode;
 		read_wr.send_flags = IB_SEND_SIGNALED;
 		read_wr.wr.rdma.rkey = ch->rc_target.rs_handle;
 		read_wr.wr.rdma.remote_addr =
@@ -327,10 +444,15 @@ static int rdma_read_xdr(struct svcxprt_rdma *xprt,
 		read_wr.sg_list = ctxt->sge;
 		read_wr.num_sge =
 			rdma_read_max_sge(xprt, chl_map->ch[ch_no].count);
-		rdma_set_ctxt_sge(xprt, ctxt,
+		err = rdma_set_ctxt_sge(xprt, ctxt, hdr_ctxt->frmr,
 					&rpl_map->sge[chl_map->ch[ch_no].start],
 					&sgl_offset,
 					read_wr.num_sge);
+		if (err) {
+			svc_rdma_unmap_dma(ctxt);
+			svc_rdma_put_context(ctxt, 0);
+			goto out;
+		}
 		if (((ch+1)->rc_discrim == 0) &&
 		    (read_wr.num_sge == chl_map->ch[ch_no].count)) {
 			/*
@@ -339,6 +461,29 @@ static int rdma_read_xdr(struct svcxprt_rdma *xprt,
 			 * the client and the RPC needs to be enqueued.
 			 */
 			set_bit(RDMACTXT_F_LAST_CTXT, &ctxt->flags);
+			if (hdr_ctxt->frmr) {
+				set_bit(RDMACTXT_F_FAST_UNREG, &ctxt->flags);
+				/*
+				 * Invalidate the local MR used to map the data
+				 * sink.
+				 */
+				if (xprt->sc_dev_caps &
+				    SVCRDMA_DEVCAP_READ_W_INV) {
+					read_wr.opcode =
+						IB_WR_RDMA_READ_WITH_INV;
+					ctxt->wr_op = read_wr.opcode;
+					read_wr.ex.invalidate_rkey =
+						ctxt->frmr->mr->lkey;
+				} else {
+					/* Prepare INVALIDATE WR */
+					memset(&inv_wr, 0, sizeof inv_wr);
+					inv_wr.opcode = IB_WR_LOCAL_INV;
+					inv_wr.send_flags = IB_SEND_SIGNALED;
+					inv_wr.ex.invalidate_rkey =
+						hdr_ctxt->frmr->mr->lkey;
+					read_wr.next = &inv_wr;
+				}
+			}
 			ctxt->read_hdr = hdr_ctxt;
 		}
 		/* Post the read */