nfsd: Remove deprecated nfsctl system call and related code.

As promised in feature-removal-schedule.txt it is time to
remove the nfsctl system call.

Userspace has perferred to not use this call throughout 2.6 and it has been
excluded in the default configuration since 2.6.36 (9 months ago).

So this patch removes all the code that was being compiled out.

There are still references to sys_nfsctl in various arch systemcall tables
and related code.  These should be cleaned out too, probably in the next
merge window.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

5 files changed, 0 insertions, 782 deletions

diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig
index fbb2a5e..10e6366 100644
--- a/fs/nfsd/Kconfig
+++ b/fs/nfsd/Kconfig
@@ -28,18 +28,6 @@ config NFSD
 
 	  If unsure, say N.
 
-config NFSD_DEPRECATED
-	bool "Include support for deprecated syscall interface to NFSD"
-	depends on NFSD
-	default y
-	help
-	  The syscall interface to nfsd was obsoleted in 2.6.0 by a new
-	  filesystem based interface.  The old interface is due for removal
-	  in 2.6.40.  If you wish to remove the interface before then
-	  say N.
-
-	  In unsure, say Y.
-
 config NFSD_V2_ACL
 	bool
 	depends on NFSD
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index b9566e4..f4cc1e2 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -797,58 +797,6 @@ exp_find_key(svc_client *clp, int fsid_type, u32 *fsidv, struct cache_req *reqp)
 	return ek;
 }
 
-#ifdef CONFIG_NFSD_DEPRECATED
-static int exp_set_key(svc_client *clp, int fsid_type, u32 *fsidv,
-		       struct svc_export *exp)
-{
-	struct svc_expkey key, *ek;
-
-	key.ek_client = clp;
-	key.ek_fsidtype = fsid_type;
-	memcpy(key.ek_fsid, fsidv, key_len(fsid_type));
-	key.ek_path = exp->ex_path;
-	key.h.expiry_time = NEVER;
-	key.h.flags = 0;
-
-	ek = svc_expkey_lookup(&key);
-	if (ek)
-		ek = svc_expkey_update(&key,ek);
-	if (ek) {
-		cache_put(&ek->h, &svc_expkey_cache);
-		return 0;
-	}
-	return -ENOMEM;
-}
-
-/*
- * Find the client's export entry matching xdev/xino.
- */
-static inline struct svc_expkey *
-exp_get_key(svc_client *clp, dev_t dev, ino_t ino)
-{
-	u32 fsidv[3];
-	
-	if (old_valid_dev(dev)) {
-		mk_fsid(FSID_DEV, fsidv, dev, ino, 0, NULL);
-		return exp_find_key(clp, FSID_DEV, fsidv, NULL);
-	}
-	mk_fsid(FSID_ENCODE_DEV, fsidv, dev, ino, 0, NULL);
-	return exp_find_key(clp, FSID_ENCODE_DEV, fsidv, NULL);
-}
-
-/*
- * Find the client's export entry matching fsid
- */
-static inline struct svc_expkey *
-exp_get_fsid_key(svc_client *clp, int fsid)
-{
-	u32 fsidv[2];
-
-	mk_fsid(FSID_NUM, fsidv, 0, 0, fsid, NULL);
-
-	return exp_find_key(clp, FSID_NUM, fsidv, NULL);
-}
-#endif
 
 static svc_export *exp_get_by_name(svc_client *clp, const struct path *path,
 				     struct cache_req *reqp)
@@ -890,275 +838,7 @@ static struct svc_export *exp_parent(svc_client *clp, struct path *path)
 	return exp;
 }
 
-#ifdef CONFIG_NFSD_DEPRECATED
-/*
- * Hashtable locking. Write locks are placed only by user processes
- * wanting to modify export information.
- * Write locking only done in this file.  Read locking
- * needed externally.
- */
-
-static DECLARE_RWSEM(hash_sem);
-
-void
-exp_readlock(void)
-{
-	down_read(&hash_sem);
-}
-
-static inline void
-exp_writelock(void)
-{
-	down_write(&hash_sem);
-}
-
-void
-exp_readunlock(void)
-{
-	up_read(&hash_sem);
-}
-
-static inline void
-exp_writeunlock(void)
-{
-	up_write(&hash_sem);
-}
-#else
-
-/* hash_sem not needed once deprecated interface is removed */
-void exp_readlock(void) {}
-static inline void exp_writelock(void){}
-void exp_readunlock(void) {}
-static inline void exp_writeunlock(void){}
-
-#endif
-
-#ifdef CONFIG_NFSD_DEPRECATED
-static void		exp_do_unexport(svc_export *unexp);
-static int		exp_verify_string(char *cp, int max);
-
-static void exp_fsid_unhash(struct svc_export *exp)
-{
-	struct svc_expkey *ek;
-
-	if ((exp->ex_flags & NFSEXP_FSID) == 0)
-		return;
-
-	ek = exp_get_fsid_key(exp->ex_client, exp->ex_fsid);
-	if (!IS_ERR(ek)) {
-		sunrpc_invalidate(&ek->h, &svc_expkey_cache);
-		cache_put(&ek->h, &svc_expkey_cache);
-	}
-}
-
-static int exp_fsid_hash(svc_client *clp, struct svc_export *exp)
-{
-	u32 fsid[2];
- 
-	if ((exp->ex_flags & NFSEXP_FSID) == 0)
-		return 0;
-
-	mk_fsid(FSID_NUM, fsid, 0, 0, exp->ex_fsid, NULL);
-	return exp_set_key(clp, FSID_NUM, fsid, exp);
-}
-
-static int exp_hash(struct auth_domain *clp, struct svc_export *exp)
-{
-	u32 fsid[2];
-	struct inode *inode = exp->ex_path.dentry->d_inode;
-	dev_t dev = inode->i_sb->s_dev;
-
-	if (old_valid_dev(dev)) {
-		mk_fsid(FSID_DEV, fsid, dev, inode->i_ino, 0, NULL);
-		return exp_set_key(clp, FSID_DEV, fsid, exp);
-	}
-	mk_fsid(FSID_ENCODE_DEV, fsid, dev, inode->i_ino, 0, NULL);
-	return exp_set_key(clp, FSID_ENCODE_DEV, fsid, exp);
-}
 
-static void exp_unhash(struct svc_export *exp)
-{
-	struct svc_expkey *ek;
-	struct inode *inode = exp->ex_path.dentry->d_inode;
-
-	ek = exp_get_key(exp->ex_client, inode->i_sb->s_dev, inode->i_ino);
-	if (!IS_ERR(ek)) {
-		sunrpc_invalidate(&ek->h, &svc_expkey_cache);
-		cache_put(&ek->h, &svc_expkey_cache);
-	}
-}
-	
-/*
- * Export a file system.
- */
-int
-exp_export(struct nfsctl_export *nxp)
-{
-	svc_client	*clp;
-	struct svc_export	*exp = NULL;
-	struct svc_export	new;
-	struct svc_expkey	*fsid_key = NULL;
-	struct path path;
-	int		err;
-
-	/* Consistency check */
-	err = -EINVAL;
-	if (!exp_verify_string(nxp->ex_path, NFS_MAXPATHLEN) ||
-	    !exp_verify_string(nxp->ex_client, NFSCLNT_IDMAX))
-		goto out;
-
-	dprintk("exp_export called for %s:%s (%x/%ld fl %x).\n",
-			nxp->ex_client, nxp->ex_path,
-			(unsigned)nxp->ex_dev, (long)nxp->ex_ino,
-			nxp->ex_flags);
-
-	/* Try to lock the export table for update */
-	exp_writelock();
-
-	/* Look up client info */
-	if (!(clp = auth_domain_find(nxp->ex_client)))
-		goto out_unlock;
-
-
-	/* Look up the dentry */
-	err = kern_path(nxp->ex_path, 0, &path);
-	if (err)
-		goto out_put_clp;
-	err = -EINVAL;
-
-	exp = exp_get_by_name(clp, &path, NULL);
-
-	memset(&new, 0, sizeof(new));
-
-	/* must make sure there won't be an ex_fsid clash */
-	if ((nxp->ex_flags & NFSEXP_FSID) &&
-	    (!IS_ERR(fsid_key = exp_get_fsid_key(clp, nxp->ex_dev))) &&
-	    fsid_key->ek_path.mnt &&
-	    (fsid_key->ek_path.mnt != path.mnt ||
-	     fsid_key->ek_path.dentry != path.dentry))
-		goto finish;
-
-	if (!IS_ERR(exp)) {
-		/* just a flags/id/fsid update */
-
-		exp_fsid_unhash(exp);
-		exp->ex_flags    = nxp->ex_flags;
-		exp->ex_anon_uid = nxp->ex_anon_uid;
-		exp->ex_anon_gid = nxp->ex_anon_gid;
-		exp->ex_fsid     = nxp->ex_dev;
-
-		err = exp_fsid_hash(clp, exp);
-		goto finish;
-	}
-
-	err = check_export(path.dentry->d_inode, &nxp->ex_flags, NULL);
-	if (err) goto finish;
-
-	err = -ENOMEM;
-
-	dprintk("nfsd: creating export entry %p for client %p\n", exp, clp);
-
-	new.h.expiry_time = NEVER;
-	new.h.flags = 0;
-	new.ex_pathname = kstrdup(nxp->ex_path, GFP_KERNEL);
-	if (!new.ex_pathname)
-		goto finish;
-	new.ex_client = clp;
-	new.ex_path = path;
-	new.ex_flags = nxp->ex_flags;
-	new.ex_anon_uid = nxp->ex_anon_uid;
-	new.ex_anon_gid = nxp->ex_anon_gid;
-	new.ex_fsid = nxp->ex_dev;
-
-	exp = svc_export_lookup(&new);
-	if (exp)
-		exp = svc_export_update(&new, exp);
-
-	if (!exp)
-		goto finish;
-
-	if (exp_hash(clp, exp) ||
-	    exp_fsid_hash(clp, exp)) {
-		/* failed to create at least one index */
-		exp_do_unexport(exp);
-		cache_flush();
-	} else
-		err = 0;
-finish:
-	kfree(new.ex_pathname);
-	if (!IS_ERR_OR_NULL(exp))
-		exp_put(exp);
-	if (!IS_ERR_OR_NULL(fsid_key))
-		cache_put(&fsid_key->h, &svc_expkey_cache);
-	path_put(&path);
-out_put_clp:
-	auth_domain_put(clp);
-out_unlock:
-	exp_writeunlock();
-out:
-	return err;
-}
-
-/*
- * Unexport a file system. The export entry has already
- * been removed from the client's list of exported fs's.
- */
-static void
-exp_do_unexport(svc_export *unexp)
-{
-	sunrpc_invalidate(&unexp->h, &svc_export_cache);
-	exp_unhash(unexp);
-	exp_fsid_unhash(unexp);
-}
-
-
-/*
- * unexport syscall.
- */
-int
-exp_unexport(struct nfsctl_export *nxp)
-{
-	struct auth_domain *dom;
-	svc_export *exp;
-	struct path path;
-	int		err;
-
-	/* Consistency check */
-	if (!exp_verify_string(nxp->ex_path, NFS_MAXPATHLEN) ||
-	    !exp_verify_string(nxp->ex_client, NFSCLNT_IDMAX))
-		return -EINVAL;
-
-	exp_writelock();
-
-	err = -EINVAL;
-	dom = auth_domain_find(nxp->ex_client);
-	if (!dom) {
-		dprintk("nfsd: unexport couldn't find %s\n", nxp->ex_client);
-		goto out_unlock;
-	}
-
-	err = kern_path(nxp->ex_path, 0, &path);
-	if (err)
-		goto out_domain;
-
-	err = -EINVAL;
-	exp = exp_get_by_name(dom, &path, NULL);
-	path_put(&path);
-	if (IS_ERR(exp))
-		goto out_domain;
-
-	exp_do_unexport(exp);
-	exp_put(exp);
-	err = 0;
-
-out_domain:
-	auth_domain_put(dom);
-	cache_flush();
-out_unlock:
-	exp_writeunlock();
-	return err;
-}
-#endif /* CONFIG_NFSD_DEPRECATED */
 
 /*
  * Obtain the root fh on behalf of a client.
@@ -1367,7 +1047,6 @@ static void *e_start(struct seq_file *m, loff_t *pos)
 	unsigned hash, export;
 	struct cache_head *ch;
 	
-	exp_readlock();
 	read_lock(&svc_export_cache.hash_lock);
 	if (!n--)
 		return SEQ_START_TOKEN;
@@ -1418,7 +1097,6 @@ static void e_stop(struct seq_file *m, void *p)
 	__releases(svc_export_cache.hash_lock)
 {
 	read_unlock(&svc_export_cache.hash_lock);
-	exp_readunlock();
 }
 
 static struct flags {
@@ -1550,97 +1228,6 @@ const struct seq_operations nfs_exports_op = {
 	.show	= e_show,
 };
 
-#ifdef CONFIG_NFSD_DEPRECATED
-/*
- * Add or modify a client.
- * Change requests may involve the list of host addresses. The list of
- * exports and possibly existing uid maps are left untouched.
- */
-int
-exp_addclient(struct nfsctl_client *ncp)
-{
-	struct auth_domain	*dom;
-	int			i, err;
-	struct in6_addr addr6;
-
-	/* First, consistency check. */
-	err = -EINVAL;
-	if (! exp_verify_string(ncp->cl_ident, NFSCLNT_IDMAX))
-		goto out;
-	if (ncp->cl_naddr > NFSCLNT_ADDRMAX)
-		goto out;
-
-	/* Lock the hashtable */
-	exp_writelock();
-
-	dom = unix_domain_find(ncp->cl_ident);
-
-	err = -ENOMEM;
-	if (!dom)
-		goto out_unlock;
-
-	/* Insert client into hashtable. */
-	for (i = 0; i < ncp->cl_naddr; i++) {
-		ipv6_addr_set_v4mapped(ncp->cl_addrlist[i].s_addr, &addr6);
-		auth_unix_add_addr(&init_net, &addr6, dom);
-	}
-	auth_unix_forget_old(dom);
-	auth_domain_put(dom);
-
-	err = 0;
-
-out_unlock:
-	exp_writeunlock();
-out:
-	return err;
-}
-
-/*
- * Delete a client given an identifier.
- */
-int
-exp_delclient(struct nfsctl_client *ncp)
-{
-	int		err;
-	struct auth_domain *dom;
-
-	err = -EINVAL;
-	if (!exp_verify_string(ncp->cl_ident, NFSCLNT_IDMAX))
-		goto out;
-
-	/* Lock the hashtable */
-	exp_writelock();
-
-	dom = auth_domain_find(ncp->cl_ident);
-	/* just make sure that no addresses work 
-	 * and that it will expire soon 
-	 */
-	if (dom) {
-		err = auth_unix_forget_old(dom);
-		auth_domain_put(dom);
-	}
-
-	exp_writeunlock();
-out:
-	return err;
-}
-
-/*
- * Verify that string is non-empty and does not exceed max length.
- */
-static int
-exp_verify_string(char *cp, int max)
-{
-	int	i;
-
-	for (i = 0; i < max; i++)
-		if (!cp[i])
-			return i;
-	cp[i] = 0;
-	printk(KERN_NOTICE "nfsd: couldn't validate string %s\n", cp);
-	return 0;
-}
-#endif /* CONFIG_NFSD_DEPRECATED */
 
 /*
  * Initialize the exports module.
@@ -1667,10 +1254,8 @@ nfsd_export_init(void)
 void
 nfsd_export_flush(void)
 {
-	exp_writelock();
 	cache_purge(&svc_expkey_cache);
 	cache_purge(&svc_export_cache);
-	exp_writeunlock();
 }
 
 /*
@@ -1682,12 +1267,9 @@ nfsd_export_shutdown(void)
 
 	dprintk("nfsd: shutting down export module.\n");
 
-	exp_writelock();
-
 	cache_unregister(&svc_expkey_cache);
 	cache_unregister(&svc_export_cache);
 	svcauth_unix_purge();
 
-	exp_writeunlock();
 	dprintk("nfsd: export shutdown complete.\n");
 }
diff --git a/fs/nfsd/lockd.c b/fs/nfsd/lockd.c
index 7c831a2..77e7a5c 100644
--- a/fs/nfsd/lockd.c
+++ b/fs/nfsd/lockd.c
@@ -35,10 +35,8 @@ nlm_fopen(struct svc_rqst *rqstp, struct nfs_fh *f, struct file **filp)
 	memcpy((char*)&fh.fh_handle.fh_base, f->data, f->size);
 	fh.fh_export = NULL;
 
-	exp_readlock();
 	nfserr = nfsd_open(rqstp, &fh, S_IFREG, NFSD_MAY_LOCK, filp);
 	fh_put(&fh);
-	exp_readunlock();
  	/* We return nlm error codes as nlm doesn't know
 	 * about nfsd, but nfsd does know about nlm..
 	 */
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 2b1449d..c771614 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -24,15 +24,6 @@
  */
 enum {
 	NFSD_Root = 1,
-#ifdef CONFIG_NFSD_DEPRECATED
-	NFSD_Svc,
-	NFSD_Add,
-	NFSD_Del,
-	NFSD_Export,
-	NFSD_Unexport,
-	NFSD_Getfd,
-	NFSD_Getfs,
-#endif
 	NFSD_List,
 	NFSD_Export_features,
 	NFSD_Fh,
@@ -59,15 +50,6 @@ enum {
 /*
  * write() for these nodes.
  */
-#ifdef CONFIG_NFSD_DEPRECATED
-static ssize_t write_svc(struct file *file, char *buf, size_t size);
-static ssize_t write_add(struct file *file, char *buf, size_t size);
-static ssize_t write_del(struct file *file, char *buf, size_t size);
-static ssize_t write_export(struct file *file, char *buf, size_t size);
-static ssize_t write_unexport(struct file *file, char *buf, size_t size);
-static ssize_t write_getfd(struct file *file, char *buf, size_t size);
-static ssize_t write_getfs(struct file *file, char *buf, size_t size);
-#endif
 static ssize_t write_filehandle(struct file *file, char *buf, size_t size);
 static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size);
 static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size);
@@ -83,15 +65,6 @@ static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
 #endif
 
 static ssize_t (*write_op[])(struct file *, char *, size_t) = {
-#ifdef CONFIG_NFSD_DEPRECATED
-	[NFSD_Svc] = write_svc,
-	[NFSD_Add] = write_add,
-	[NFSD_Del] = write_del,
-	[NFSD_Export] = write_export,
-	[NFSD_Unexport] = write_unexport,
-	[NFSD_Getfd] = write_getfd,
-	[NFSD_Getfs] = write_getfs,
-#endif
 	[NFSD_Fh] = write_filehandle,
 	[NFSD_FO_UnlockIP] = write_unlock_ip,
 	[NFSD_FO_UnlockFS] = write_unlock_fs,
@@ -130,16 +103,6 @@ static ssize_t nfsctl_transaction_write(struct file *file, const char __user *bu
 
 static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos)
 {
-#ifdef CONFIG_NFSD_DEPRECATED
-	static int warned;
-	if (file->f_dentry->d_name.name[0] == '.' && !warned) {
-		printk(KERN_INFO
-		       "Warning: \"%s\" uses deprecated NFSD interface: %s."
-		       "  This will be removed in 2.6.40\n",
-		       current->comm, file->f_dentry->d_name.name);
-		warned = 1;
-	}
-#endif
 	if (! file->private_data) {
 		/* An attempt to read a transaction file without writing
 		 * causes a 0-byte write so that the file can return
@@ -226,303 +189,6 @@ static const struct file_operations pool_stats_operations = {
  * payload - write methods
  */
 
-#ifdef CONFIG_NFSD_DEPRECATED
-/**
- * write_svc - Start kernel's NFSD server
- *
- * Deprecated.  /proc/fs/nfsd/threads is preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- *			buf:	struct nfsctl_svc
- *				svc_port:	port number of this
- *						server's listener
- *				svc_nthreads:	number of threads to start
- *			size:	size in bytes of passed in nfsctl_svc
- * Output:
- *	On success:	returns zero
- *	On error:	return code is negative errno value
- */
-static ssize_t write_svc(struct file *file, char *buf, size_t size)
-{
-	struct nfsctl_svc *data;
-	int err;
-	if (size < sizeof(*data))
-		return -EINVAL;
-	data = (struct nfsctl_svc*) buf;
-	err = nfsd_svc(data->svc_port, data->svc_nthreads);
-	if (err < 0)
-		return err;
-	return 0;
-}
-
-/**
- * write_add - Add or modify client entry in auth unix cache
- *
- * Deprecated.  /proc/net/rpc/auth.unix.ip is preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- *			buf:	struct nfsctl_client
- *				cl_ident:	'\0'-terminated C string
- *						containing domain name
- *						of client
- *				cl_naddr:	no. of items in cl_addrlist
- *				cl_addrlist:	array of client addresses
- *				cl_fhkeytype:	ignored
- *				cl_fhkeylen:	ignored
- *				cl_fhkey:	ignored
- *			size:	size in bytes of passed in nfsctl_client
- * Output:
- *	On success:	returns zero
- *	On error:	return code is negative errno value
- *
- * Note: Only AF_INET client addresses are passed in, since
- * nfsctl_client.cl_addrlist contains only in_addr fields for addresses.
- */
-static ssize_t write_add(struct file *file, char *buf, size_t size)
-{
-	struct nfsctl_client *data;
-	if (size < sizeof(*data))
-		return -EINVAL;
-	data = (struct nfsctl_client *)buf;
-	return exp_addclient(data);
-}
-
-/**
- * write_del - Remove client from auth unix cache
- *
- * Deprecated.  /proc/net/rpc/auth.unix.ip is preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- *			buf:	struct nfsctl_client
- *				cl_ident:	'\0'-terminated C string
- *						containing domain name
- *						of client
- *				cl_naddr:	ignored
- *				cl_addrlist:	ignored
- *				cl_fhkeytype:	ignored
- *				cl_fhkeylen:	ignored
- *				cl_fhkey:	ignored
- *			size:	size in bytes of passed in nfsctl_client
- * Output:
- *	On success:	returns zero
- *	On error:	return code is negative errno value
- *
- * Note: Only AF_INET client addresses are passed in, since
- * nfsctl_client.cl_addrlist contains only in_addr fields for addresses.
- */
-static ssize_t write_del(struct file *file, char *buf, size_t size)
-{
-	struct nfsctl_client *data;
-	if (size < sizeof(*data))
-		return -EINVAL;
-	data = (struct nfsctl_client *)buf;
-	return exp_delclient(data);
-}
-
-/**
- * write_export - Export part or all of a local file system
- *
- * Deprecated.  /proc/net/rpc/{nfsd.export,nfsd.fh} are preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- *			buf:	struct nfsctl_export
- *				ex_client:	'\0'-terminated C string
- *						containing domain name
- *						of client allowed to access
- *						this export
- *				ex_path:	'\0'-terminated C string
- *						containing pathname of
- *						directory in local file system
- *				ex_dev:		fsid to use for this export
- *				ex_ino:		ignored
- *				ex_flags:	export flags for this export
- *				ex_anon_uid:	UID to use for anonymous
- *						requests
- *				ex_anon_gid:	GID to use for anonymous
- *						requests
- *			size:	size in bytes of passed in nfsctl_export
- * Output:
- *	On success:	returns zero
- *	On error:	return code is negative errno value
- */
-static ssize_t write_export(struct file *file, char *buf, size_t size)
-{
-	struct nfsctl_export *data;
-	if (size < sizeof(*data))
-		return -EINVAL;
-	data = (struct nfsctl_export*)buf;
-	return exp_export(data);
-}
-
-/**
- * write_unexport - Unexport a previously exported file system
- *
- * Deprecated.  /proc/net/rpc/{nfsd.export,nfsd.fh} are preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- *			buf:	struct nfsctl_export
- *				ex_client:	'\0'-terminated C string
- *						containing domain name
- *						of client no longer allowed
- *						to access this export
- *				ex_path:	'\0'-terminated C string
- *						containing pathname of
- *						directory in local file system
- *				ex_dev:		ignored
- *				ex_ino:		ignored
- *				ex_flags:	ignored
- *				ex_anon_uid:	ignored
- *				ex_anon_gid:	ignored
- *			size:	size in bytes of passed in nfsctl_export
- * Output:
- *	On success:	returns zero
- *	On error:	return code is negative errno value
- */
-static ssize_t write_unexport(struct file *file, char *buf, size_t size)
-{
-	struct nfsctl_export *data;
-
-	if (size < sizeof(*data))
-		return -EINVAL;
-	data = (struct nfsctl_export*)buf;
-	return exp_unexport(data);
-}
-
-/**
- * write_getfs - Get a variable-length NFS file handle by path
- *
- * Deprecated.  /proc/fs/nfsd/filehandle is preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- *			buf:	struct nfsctl_fsparm
- *				gd_addr:	socket address of client
- *				gd_path:	'\0'-terminated C string
- *						containing pathname of
- *						directory in local file system
- *				gd_maxlen:	maximum size of returned file
- *						handle
- *			size:	size in bytes of passed in nfsctl_fsparm
- * Output:
- *	On success:	passed-in buffer filled with a knfsd_fh structure
- *			(a variable-length raw NFS file handle);
- *			return code is the size in bytes of the file handle
- *	On error:	return code is negative errno value
- *
- * Note: Only AF_INET client addresses are passed in, since gd_addr
- * is the same size as a struct sockaddr_in.
- */
-static ssize_t write_getfs(struct file *file, char *buf, size_t size)
-{
-	struct nfsctl_fsparm *data;
-	struct sockaddr_in *sin;
-	struct auth_domain *clp;
-	int err = 0;
-	struct knfsd_fh *res;
-	struct in6_addr in6;
-
-	if (size < sizeof(*data))
-		return -EINVAL;
-	data = (struct nfsctl_fsparm*)buf;
-	err = -EPROTONOSUPPORT;
-	if (data->gd_addr.sa_family != AF_INET)
-		goto out;
-	sin = (struct sockaddr_in *)&data->gd_addr;
-	if (data->gd_maxlen > NFS3_FHSIZE)
-		data->gd_maxlen = NFS3_FHSIZE;
-
-	res = (struct knfsd_fh*)buf;
-
-	exp_readlock();
-
-	ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
-
-	clp = auth_unix_lookup(&init_net, &in6);
-	if (!clp)
-		err = -EPERM;
-	else {
-		err = exp_rootfh(clp, data->gd_path, res, data->gd_maxlen);
-		auth_domain_put(clp);
-	}
-	exp_readunlock();
-	if (err == 0)
-		err = res->fh_size + offsetof(struct knfsd_fh, fh_base);
- out:
-	return err;
-}
-
-/**
- * write_getfd - Get a fixed-length NFS file handle by path (used by mountd)
- *
- * Deprecated.  /proc/fs/nfsd/filehandle is preferred.
- * Function remains to support old versions of nfs-utils.
- *
- * Input:
- *			buf:	struct nfsctl_fdparm
- *				gd_addr:	socket address of client
- *				gd_path:	'\0'-terminated C string
- *						containing pathname of
- *						directory in local file system
- *				gd_version:	fdparm structure version
- *			size:	size in bytes of passed in nfsctl_fdparm
- * Output:
- *	On success:	passed-in buffer filled with nfsctl_res
- *			(a fixed-length raw NFS file handle);
- *			return code is the size in bytes of the file handle
- *	On error:	return code is negative errno value
- *
- * Note: Only AF_INET client addresses are passed in, since gd_addr
- * is the same size as a struct sockaddr_in.
- */
-static ssize_t write_getfd(struct file *file, char *buf, size_t size)
-{
-	struct nfsctl_fdparm *data;
-	struct sockaddr_in *sin;
-	struct auth_domain *clp;
-	int err = 0;
-	struct knfsd_fh fh;
-	char *res;
-	struct in6_addr in6;
-
-	if (size < sizeof(*data))
-		return -EINVAL;
-	data = (struct nfsctl_fdparm*)buf;
-	err = -EPROTONOSUPPORT;
-	if (data->gd_addr.sa_family != AF_INET)
-		goto out;
-	err = -EINVAL;
-	if (data->gd_version < 2 || data->gd_version > NFSSVC_MAXVERS)
-		goto out;
-
-	res = buf;
-	sin = (struct sockaddr_in *)&data->gd_addr;
-	exp_readlock();
-
-	ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
-
-	clp = auth_unix_lookup(&init_net, &in6);
-	if (!clp)
-		err = -EPERM;
-	else {
-		err = exp_rootfh(clp, data->gd_path, &fh, NFS_FHSIZE);
-		auth_domain_put(clp);
-	}
-	exp_readunlock();
-
-	if (err == 0) {
-		memset(res,0, NFS_FHSIZE);
-		memcpy(res, &fh.fh_base, fh.fh_size);
-		err = NFS_FHSIZE;
-	}
- out:
-	return err;
-}
-#endif /* CONFIG_NFSD_DEPRECATED */
 
 /**
  * write_unlock_ip - Release all locks used by a client
@@ -1397,15 +1063,6 @@ static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
 static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
 {
 	static struct tree_descr nfsd_files[] = {
-#ifdef CONFIG_NFSD_DEPRECATED
-		[NFSD_Svc] = {".svc", &transaction_ops, S_IWUSR},
-		[NFSD_Add] = {".add", &transaction_ops, S_IWUSR},
-		[NFSD_Del] = {".del", &transaction_ops, S_IWUSR},
-		[NFSD_Export] = {".export", &transaction_ops, S_IWUSR},
-		[NFSD_Unexport] = {".unexport", &transaction_ops, S_IWUSR},
-		[NFSD_Getfd] = {".getfd", &transaction_ops, S_IWUSR|S_IRUSR},
-		[NFSD_Getfs] = {".getfs", &transaction_ops, S_IWUSR|S_IRUSR},
-#endif
 		[NFSD_List] = {"exports", &exports_operations, S_IRUGO},
 		[NFSD_Export_features] = {"export_features",
 					&export_features_operations, S_IRUGO},
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 18743c4..bb8397f 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -528,16 +528,9 @@ nfsd(void *vrqstp)
 			continue;
 		}
 
-
-		/* Lock the export hash tables for reading. */
-		exp_readlock();
-
 		validate_process_creds();
 		svc_process(rqstp);
 		validate_process_creds();
-
-		/* Unlock export hash tables */
-		exp_readunlock();
 	}
 
 	/* Clear signals before calling svc_exit_thread() */