Merge branch 'for-3.5-take-2' of git://linux-nfs.org/~bfields/linux

Pull nfsd update from Bruce Fields.

* 'for-3.5-take-2' of git://linux-nfs.org/~bfields/linux: (23 commits)
  nfsd: trivial: use SEEK_SET instead of 0 in vfs_llseek
  SUNRPC: split upcall function to extract reusable parts
  nfsd: allocate id-to-name and name-to-id caches in per-net operations.
  nfsd: make name-to-id cache allocated per network namespace context
  nfsd: make id-to-name cache allocated per network namespace context
  nfsd: pass network context to idmap init/exit functions
  nfsd: allocate export and expkey caches in per-net operations.
  nfsd: make expkey cache allocated per network namespace context
  nfsd: make export cache allocated per network namespace context
  nfsd: pass pointer to export cache down to stack wherever possible.
  nfsd: pass network context to export caches init/shutdown routines
  Lockd: pass network namespace to creation and destruction routines
  NFSd: remove hard-coded dereferences to name-to-id and id-to-name caches
  nfsd: pass pointer to expkey cache down to stack wherever possible.
  nfsd: use hash table from cache detail in nfsd export seq ops
  nfsd: pass svc_export_cache pointer as private data to "exports" seq file ops
  nfsd: use exp_put() for svc_export_cache put
  nfsd: use cache detail pointer from svc_export structure on cache put
  nfsd: add link to owner cache detail to svc_export structure
  nfsd: use passed cache_detail pointer expkey_parse()
  ...

fs/lockd/clntlock.c

@@ -56,7 +56,7 @@ 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();
+	status = lockd_up(nlm_init->net);
 	if (status < 0)
 		return ERR_PTR(status);
 
@@ -65,7 +65,7 @@ struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init)
 				   nlm_init->hostname, nlm_init->noresvport,
 				   nlm_init->net);
 	if (host == NULL) {
-		lockd_down();
+		lockd_down(nlm_init->net);
 		return ERR_PTR(-ENOLCK);
 	}
 
@@ -80,8 +80,10 @@ EXPORT_SYMBOL_GPL(nlmclnt_init);
  */
 void nlmclnt_done(struct nlm_host *host)
 {
+	struct net *net = host->net;
+
 	nlmclnt_release_host(host);
-	lockd_down();
+	lockd_down(net);
 }
 EXPORT_SYMBOL_GPL(nlmclnt_done);
 
@@ -220,11 +222,12 @@ reclaimer(void *ptr)
 	struct nlm_wait	  *block;
 	struct file_lock *fl, *next;
 	u32 nsmstate;
+	struct net *net = host->net;
 
 	allow_signal(SIGKILL);
 
 	down_write(&host->h_rwsem);
-	lockd_up();	/* note: this cannot fail as lockd is already running */
+	lockd_up(net);	/* note: this cannot fail as lockd is already running */
 
 	dprintk("lockd: reclaiming locks for host %s\n", host->h_name);
 
@@ -275,6 +278,6 @@ reclaimer(void *ptr)
 
 	/* Release host handle after use */
 	nlmclnt_release_host(host);
-	lockd_down();
+	lockd_down(net);
 	return 0;
 }

fs/lockd/svc.c

@@ -295,11 +295,10 @@ static void lockd_down_net(struct net *net)
 /*
  * Bring up the lockd process if it's not already up.
  */
-int lockd_up(void)
+int lockd_up(struct net *net)
 {
 	struct svc_serv *serv;
 	int		error = 0;
-	struct net *net = current->nsproxy->net_ns;
 
 	mutex_lock(&nlmsvc_mutex);
 	/*
@@ -378,12 +377,12 @@ EXPORT_SYMBOL_GPL(lockd_up);
  * Decrement the user count and bring down lockd if we're the last.
  */
 void
-lockd_down(void)
+lockd_down(struct net *net)
 {
 	mutex_lock(&nlmsvc_mutex);
 	if (nlmsvc_users) {
 		if (--nlmsvc_users) {
-			lockd_down_net(current->nsproxy->net_ns);
+			lockd_down_net(net);
 			goto out;
 		}
 	} else {

fs/nfsd/idmap.h

@@ -42,14 +42,14 @@
 #define IDMAP_NAMESZ 128
 
 #ifdef CONFIG_NFSD_V4
-int nfsd_idmap_init(void);
-void nfsd_idmap_shutdown(void);
+int nfsd_idmap_init(struct net *);
+void nfsd_idmap_shutdown(struct net *);
 #else
-static inline int nfsd_idmap_init(void)
+static inline int nfsd_idmap_init(struct net *net)
 {
 	return 0;
 }
-static inline void nfsd_idmap_shutdown(void)
+static inline void nfsd_idmap_shutdown(struct net *net)
 {
 }
 #endif

fs/nfsd/netns.h

@@ -28,6 +28,12 @@ struct cld_net;
 
 struct nfsd_net {
 	struct cld_net *cld_net;
+
+	struct cache_detail *svc_expkey_cache;
+	struct cache_detail *svc_export_cache;
+
+	struct cache_detail *idtoname_cache;
+	struct cache_detail *nametoid_cache;
 };
 
 extern int nfsd_net_id;

fs/nfsd/nfs4idmap.c

@@ -36,9 +36,11 @@
 #include <linux/seq_file.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
+#include <linux/sunrpc/svc_xprt.h>
 #include <net/net_namespace.h>
 #include "idmap.h"
 #include "nfsd.h"
+#include "netns.h"
 
 /*
  * Turn off idmapping when using AUTH_SYS.
@@ -107,8 +109,6 @@ ent_alloc(void)
  * ID -> Name cache
  */
 
-static struct cache_head *idtoname_table[ENT_HASHMAX];
-
 static uint32_t
 idtoname_hash(struct ent *ent)
 {
@@ -183,13 +183,13 @@ warn_no_idmapd(struct cache_detail *detail, int has_died)
 
 
 static int         idtoname_parse(struct cache_detail *, char *, int);
-static struct ent *idtoname_lookup(struct ent *);
-static struct ent *idtoname_update(struct ent *, struct ent *);
+static struct ent *idtoname_lookup(struct cache_detail *, struct ent *);
+static struct ent *idtoname_update(struct cache_detail *, struct ent *,
+				   struct ent *);
 
-static struct cache_detail idtoname_cache = {
+static struct cache_detail idtoname_cache_template = {
 	.owner		= THIS_MODULE,
 	.hash_size	= ENT_HASHMAX,
-	.hash_table	= idtoname_table,
 	.name		= "nfs4.idtoname",
 	.cache_put	= ent_put,
 	.cache_upcall	= idtoname_upcall,
@@ -244,7 +244,7 @@ idtoname_parse(struct cache_detail *cd, char *buf, int buflen)
 		goto out;
 
 	error = -ENOMEM;
-	res = idtoname_lookup(&ent);
+	res = idtoname_lookup(cd, &ent);
 	if (!res)
 		goto out;
 
@@ -260,11 +260,11 @@ idtoname_parse(struct cache_detail *cd, char *buf, int buflen)
 	else
 		memcpy(ent.name, buf1, sizeof(ent.name));
 	error = -ENOMEM;
-	res = idtoname_update(&ent, res);
+	res = idtoname_update(cd, &ent, res);
 	if (res == NULL)
 		goto out;
 
-	cache_put(&res->h, &idtoname_cache);
+	cache_put(&res->h, cd);
 
 	error = 0;
 out:
@@ -275,10 +275,9 @@ idtoname_parse(struct cache_detail *cd, char *buf, int buflen)
 
 
 static struct ent *
-idtoname_lookup(struct ent *item)
+idtoname_lookup(struct cache_detail *cd, struct ent *item)
 {
-	struct cache_head *ch = sunrpc_cache_lookup(&idtoname_cache,
-						    &item->h,
+	struct cache_head *ch = sunrpc_cache_lookup(cd, &item->h,
 						    idtoname_hash(item));
 	if (ch)
 		return container_of(ch, struct ent, h);
@@ -287,10 +286,9 @@ idtoname_lookup(struct ent *item)
 }
 
 static struct ent *
-idtoname_update(struct ent *new, struct ent *old)
+idtoname_update(struct cache_detail *cd, struct ent *new, struct ent *old)
 {
-	struct cache_head *ch = sunrpc_cache_update(&idtoname_cache,
-						    &new->h, &old->h,
+	struct cache_head *ch = sunrpc_cache_update(cd, &new->h, &old->h,
 						    idtoname_hash(new));
 	if (ch)
 		return container_of(ch, struct ent, h);
@@ -303,8 +301,6 @@ idtoname_update(struct ent *new, struct ent *old)
  * Name -> ID cache
  */
 
-static struct cache_head *nametoid_table[ENT_HASHMAX];
-
 static inline int
 nametoid_hash(struct ent *ent)
 {
@@ -359,14 +355,14 @@ nametoid_show(struct seq_file *m, struct cache_detail *cd, struct cache_head *h)
 	return 0;
 }
 
-static struct ent *nametoid_lookup(struct ent *);
-static struct ent *nametoid_update(struct ent *, struct ent *);
+static struct ent *nametoid_lookup(struct cache_detail *, struct ent *);
+static struct ent *nametoid_update(struct cache_detail *, struct ent *,
+				   struct ent *);
 static int         nametoid_parse(struct cache_detail *, char *, int);
 
-static struct cache_detail nametoid_cache = {
+static struct cache_detail nametoid_cache_template = {
 	.owner		= THIS_MODULE,
 	.hash_size	= ENT_HASHMAX,
-	.hash_table	= nametoid_table,
 	.name		= "nfs4.nametoid",
 	.cache_put	= ent_put,
 	.cache_upcall	= nametoid_upcall,
@@ -426,14 +422,14 @@ nametoid_parse(struct cache_detail *cd, char *buf, int buflen)
 		set_bit(CACHE_NEGATIVE, &ent.h.flags);
 
 	error = -ENOMEM;
-	res = nametoid_lookup(&ent);
+	res = nametoid_lookup(cd, &ent);
 	if (res == NULL)
 		goto out;
-	res = nametoid_update(&ent, res);
+	res = nametoid_update(cd, &ent, res);
 	if (res == NULL)
 		goto out;
 
-	cache_put(&res->h, &nametoid_cache);
+	cache_put(&res->h, cd);
 	error = 0;
 out:
 	kfree(buf1);
@@ -443,10 +439,9 @@ nametoid_parse(struct cache_detail *cd, char *buf, int buflen)
 
 
 static struct ent *
-nametoid_lookup(struct ent *item)
+nametoid_lookup(struct cache_detail *cd, struct ent *item)
 {
-	struct cache_head *ch = sunrpc_cache_lookup(&nametoid_cache,
-						    &item->h,
+	struct cache_head *ch = sunrpc_cache_lookup(cd, &item->h,
 						    nametoid_hash(item));
 	if (ch)
 		return container_of(ch, struct ent, h);
@@ -455,10 +450,9 @@ nametoid_lookup(struct ent *item)
 }
 
 static struct ent *
-nametoid_update(struct ent *new, struct ent *old)
+nametoid_update(struct cache_detail *cd, struct ent *new, struct ent *old)
 {
-	struct cache_head *ch = sunrpc_cache_update(&nametoid_cache,
-						    &new->h, &old->h,
+	struct cache_head *ch = sunrpc_cache_update(cd, &new->h, &old->h,
 						    nametoid_hash(new));
 	if (ch)
 		return container_of(ch, struct ent, h);
@@ -471,34 +465,55 @@ nametoid_update(struct ent *new, struct ent *old)
  */
 
 int
-nfsd_idmap_init(void)
+nfsd_idmap_init(struct net *net)
 {
 	int rv;
+	struct nfsd_net *nn = net_generic(net, nfsd_net_id);
 
-	rv = cache_register_net(&idtoname_cache, &init_net);
+	nn->idtoname_cache = cache_create_net(&idtoname_cache_template, net);
+	if (IS_ERR(nn->idtoname_cache))
+		return PTR_ERR(nn->idtoname_cache);
+	rv = cache_register_net(nn->idtoname_cache, net);
 	if (rv)
-		return rv;
-	rv = cache_register_net(&nametoid_cache, &init_net);
+		goto destroy_idtoname_cache;
+	nn->nametoid_cache = cache_create_net(&nametoid_cache_template, net);
+	if (IS_ERR(nn->nametoid_cache)) {
+		rv = PTR_ERR(nn->idtoname_cache);
+		goto unregister_idtoname_cache;
+	}
+	rv = cache_register_net(nn->nametoid_cache, net);
 	if (rv)
-		cache_unregister_net(&idtoname_cache, &init_net);
+		goto destroy_nametoid_cache;
+	return 0;
+
+destroy_nametoid_cache:
+	cache_destroy_net(nn->nametoid_cache, net);
+unregister_idtoname_cache:
+	cache_unregister_net(nn->idtoname_cache, net);
+destroy_idtoname_cache:
+	cache_destroy_net(nn->idtoname_cache, net);
 	return rv;
 }
 
 void
-nfsd_idmap_shutdown(void)
+nfsd_idmap_shutdown(struct net *net)
 {
-	cache_unregister_net(&idtoname_cache, &init_net);
-	cache_unregister_net(&nametoid_cache, &init_net);
+	struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+
+	cache_unregister_net(nn->idtoname_cache, net);
+	cache_unregister_net(nn->nametoid_cache, net);
+	cache_destroy_net(nn->idtoname_cache, net);
+	cache_destroy_net(nn->nametoid_cache, net);
 }
 
 static int
 idmap_lookup(struct svc_rqst *rqstp,
-		struct ent *(*lookup_fn)(struct ent *), struct ent *key,
-		struct cache_detail *detail, struct ent **item)
+		struct ent *(*lookup_fn)(struct cache_detail *, struct ent *),
+		struct ent *key, struct cache_detail *detail, struct ent **item)
 {
 	int ret;
 
-	*item = lookup_fn(key);
+	*item = lookup_fn(detail, key);
 	if (!*item)
 		return -ENOMEM;
  retry:
@@ -506,7 +521,7 @@ idmap_lookup(struct svc_rqst *rqstp,
 
 	if (ret == -ETIMEDOUT) {
 		struct ent *prev_item = *item;
-		*item = lookup_fn(key);
+		*item = lookup_fn(detail, key);
 		if (*item != prev_item)
 			goto retry;
 		cache_put(&(*item)->h, detail);
@@ -531,19 +546,20 @@ idmap_name_to_id(struct svc_rqst *rqstp, int type, const char *name, u32 namelen
 		.type = type,
 	};
 	int ret;
+	struct nfsd_net *nn = net_generic(rqstp->rq_xprt->xpt_net, nfsd_net_id);
 
 	if (namelen + 1 > sizeof(key.name))
 		return nfserr_badowner;
 	memcpy(key.name, name, namelen);
 	key.name[namelen] = '\0';
 	strlcpy(key.authname, rqst_authname(rqstp), sizeof(key.authname));
-	ret = idmap_lookup(rqstp, nametoid_lookup, &key, &nametoid_cache, &item);
+	ret = idmap_lookup(rqstp, nametoid_lookup, &key, nn->nametoid_cache, &item);
 	if (ret == -ENOENT)
 		return nfserr_badowner;
 	if (ret)
 		return nfserrno(ret);
 	*id = item->id;
-	cache_put(&item->h, &nametoid_cache);
+	cache_put(&item->h, nn->nametoid_cache);
 	return 0;
 }
 
@@ -555,9 +571,10 @@ idmap_id_to_name(struct svc_rqst *rqstp, int type, uid_t id, char *name)
 		.type = type,
 	};
 	int ret;
+	struct nfsd_net *nn = net_generic(rqstp->rq_xprt->xpt_net, nfsd_net_id);
 
 	strlcpy(key.authname, rqst_authname(rqstp), sizeof(key.authname));
-	ret = idmap_lookup(rqstp, idtoname_lookup, &key, &idtoname_cache, &item);
+	ret = idmap_lookup(rqstp, idtoname_lookup, &key, nn->idtoname_cache, &item);
 	if (ret == -ENOENT)
 		return sprintf(name, "%u", id);
 	if (ret)
@@ -565,7 +582,7 @@ idmap_id_to_name(struct svc_rqst *rqstp, int type, uid_t id, char *name)
 	ret = strlen(item->name);
 	BUG_ON(ret > IDMAP_NAMESZ);
 	memcpy(name, item->name, ret);
-	cache_put(&item->h, &idtoname_cache);
+	cache_put(&item->h, nn->idtoname_cache);
 	return ret;
 }
 

fs/nfsd/nfs4state.c

@@ -3155,10 +3155,17 @@ nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 static struct lock_manager nfsd4_manager = {
 };
 
+static bool grace_ended;
+
 static void
 nfsd4_end_grace(void)
 {
+	/* do nothing if grace period already ended */
+	if (grace_ended)
+		return;
+
 	dprintk("NFSD: end of grace period\n");
+	grace_ended = true;
 	nfsd4_record_grace_done(&init_net, boot_time);
 	locks_end_grace(&nfsd4_manager);
 	/*
@@ -3183,7 +3190,6 @@ nfs4_laundromat(void)
 	nfs4_lock_state();
 
 	dprintk("NFSD: laundromat service - starting\n");
-	if (locks_in_grace())
 	nfsd4_end_grace();
 	INIT_LIST_HEAD(&reaplist);
 	spin_lock(&client_lock);
@@ -4055,7 +4061,6 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	struct nfs4_openowner *open_sop = NULL;
 	struct nfs4_lockowner *lock_sop = NULL;
 	struct nfs4_ol_stateid *lock_stp;
-	struct nfs4_file *fp;
 	struct file *filp = NULL;
 	struct file_lock file_lock;
 	struct file_lock conflock;
@@ -4123,7 +4128,6 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 			goto out;
 	}
 	lock_sop = lockowner(lock_stp->st_stateowner);
-	fp = lock_stp->st_file;
 
 	lkflg = setlkflg(lock->lk_type);
 	status = nfs4_check_openmode(lock_stp, lkflg);
@@ -4715,6 +4719,7 @@ nfs4_state_start(void)
 	nfsd4_client_tracking_init(&init_net);
 	boot_time = get_seconds();
 	locks_start_grace(&nfsd4_manager);
+	grace_ended = false;
 	printk(KERN_INFO "NFSD: starting %ld-second grace period\n",
 	       nfsd4_grace);
 	ret = set_callback_cred();

fs/nfsd/nfsctl.c

@@ -127,7 +127,17 @@ static const struct file_operations transaction_ops = {
 
 static int exports_open(struct inode *inode, struct file *file)
 {
-	return seq_open(file, &nfs_exports_op);
+	int err;
+	struct seq_file *seq;
+	struct nfsd_net *nn = net_generic(&init_net, nfsd_net_id);
+
+	err = seq_open(file, &nfs_exports_op);
+	if (err)
+		return err;
+
+	seq = file->private_data;
+	seq->private = nn->svc_export_cache;
+	return 0;
 }
 
 static const struct file_operations exports_operations = {
@@ -345,7 +355,7 @@ static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
 	if (!dom)
 		return -ENOMEM;
 
-	len = exp_rootfh(dom, path, &fh,  maxsize);
+	len = exp_rootfh(&init_net, dom, path, &fh,  maxsize);
 	auth_domain_put(dom);
 	if (len)
 		return len;
@@ -1127,7 +1137,34 @@ static int create_proc_exports_entry(void)
 #endif
 
 int nfsd_net_id;
+
+static __net_init int nfsd_init_net(struct net *net)
+{
+	int retval;
+
+	retval = nfsd_export_init(net);
+	if (retval)
+		goto out_export_error;
+	retval = nfsd_idmap_init(net);
+	if (retval)
+		goto out_idmap_error;
+	return 0;
+
+out_idmap_error:
+	nfsd_export_shutdown(net);
+out_export_error:
+	return retval;
+}
+
+static __net_exit void nfsd_exit_net(struct net *net)
+{
+	nfsd_idmap_shutdown(net);
+	nfsd_export_shutdown(net);
+}
+
 static struct pernet_operations nfsd_net_ops = {
+	.init = nfsd_init_net,
+	.exit = nfsd_exit_net,
 	.id   = &nfsd_net_id,
 	.size = sizeof(struct nfsd_net),
 };
@@ -1154,16 +1191,10 @@ static int __init init_nfsd(void)
 	retval = nfsd_reply_cache_init();
 	if (retval)
 		goto out_free_stat;
-	retval = nfsd_export_init();
-	if (retval)
-		goto out_free_cache;
 	nfsd_lockd_init();	/* lockd->nfsd callbacks */
-	retval = nfsd_idmap_init();
-	if (retval)
-		goto out_free_lockd;
 	retval = create_proc_exports_entry();
 	if (retval)
-		goto out_free_idmap;
+		goto out_free_lockd;
 	retval = register_filesystem(&nfsd_fs_type);
 	if (retval)
 		goto out_free_all;
@@ -1171,12 +1202,8 @@ static int __init init_nfsd(void)
 out_free_all:
 	remove_proc_entry("fs/nfs/exports", NULL);
 	remove_proc_entry("fs/nfs", NULL);
-out_free_idmap:
-	nfsd_idmap_shutdown();
 out_free_lockd:
 	nfsd_lockd_shutdown();
-	nfsd_export_shutdown();
-out_free_cache:
 	nfsd_reply_cache_shutdown();
 out_free_stat:
 	nfsd_stat_shutdown();
@@ -1192,13 +1219,11 @@ static int __init init_nfsd(void)
 
 static void __exit exit_nfsd(void)
 {
-	nfsd_export_shutdown();
 	nfsd_reply_cache_shutdown();
 	remove_proc_entry("fs/nfs/exports", NULL);
 	remove_proc_entry("fs/nfs", NULL);
 	nfsd_stat_shutdown();
 	nfsd_lockd_shutdown();
-	nfsd_idmap_shutdown();
 	nfsd4_free_slabs();
 	nfsd_fault_inject_cleanup();
 	unregister_filesystem(&nfsd_fs_type);

fs/nfsd/nfsfh.c

@@ -636,7 +636,7 @@ fh_put(struct svc_fh *fhp)
 #endif
 	}
 	if (exp) {
-		cache_put(&exp->h, &svc_export_cache);
+		exp_put(exp);
 		fhp->fh_export = NULL;
 	}
 	return;

fs/nfsd/nfssvc.c

@@ -220,7 +220,7 @@ static int nfsd_startup(unsigned short port, int nrservs)
 	ret = nfsd_init_socks(port);
 	if (ret)
 		goto out_racache;
-	ret = lockd_up();
+	ret = lockd_up(&init_net);
 	if (ret)
 		goto out_racache;
 	ret = nfs4_state_start();
@@ -229,7 +229,7 @@ static int nfsd_startup(unsigned short port, int nrservs)
 	nfsd_up = true;
 	return 0;
 out_lockd:
-	lockd_down();
+	lockd_down(&init_net);
 out_racache:
 	nfsd_racache_shutdown();
 	return ret;
@@ -246,7 +246,7 @@ static void nfsd_shutdown(void)
 	if (!nfsd_up)
 		return;
 	nfs4_state_shutdown();
-	lockd_down();
+	lockd_down(&init_net);
 	nfsd_racache_shutdown();
 	nfsd_up = false;
 }
@@ -261,7 +261,7 @@ static void nfsd_last_thread(struct svc_serv *serv, struct net *net)
 
 	printk(KERN_WARNING "nfsd: last server has exited, flushing export "
 			    "cache\n");
-	nfsd_export_flush();
+	nfsd_export_flush(net);
 }
 
 void nfsd_reset_versions(void)

fs/nfsd/vfs.c

@@ -2039,7 +2039,7 @@ nfsd_readdir(struct svc_rqst *rqstp, struct svc_fh *fhp, loff_t *offsetp,
 	if (err)
 		goto out;
 
-	offset = vfs_llseek(file, offset, 0);
+	offset = vfs_llseek(file, offset, SEEK_SET);
 	if (offset < 0) {
 		err = nfserrno((int)offset);
 		goto out_close;

include/linux/lockd/bind.h

@@ -54,7 +54,7 @@ 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(void);
-extern void	lockd_down(void);
+extern int	lockd_up(struct net *net);
+extern void	lockd_down(struct net *net);
 
 #endif /* LINUX_LOCKD_BIND_H */

include/linux/nfsd/export.h

@@ -103,6 +103,7 @@ struct svc_export {
 	struct nfsd4_fs_locations ex_fslocs;
 	int			ex_nflavors;
 	struct exp_flavor_info	ex_flavors[MAX_SECINFO_LIST];
+	struct cache_detail	*cd;
 };
 
 /* an "export key" (expkey) maps a filehandlefragement to an
@@ -129,24 +130,22 @@ __be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp);
 /*
  * Function declarations
  */
-int			nfsd_export_init(void);
-void			nfsd_export_shutdown(void);
-void			nfsd_export_flush(void);
+int			nfsd_export_init(struct net *);
+void			nfsd_export_shutdown(struct net *);
+void			nfsd_export_flush(struct net *);
 struct svc_export *	rqst_exp_get_by_name(struct svc_rqst *,
 					     struct path *);
 struct svc_export *	rqst_exp_parent(struct svc_rqst *,
 					struct path *);
 struct svc_export *	rqst_find_fsidzero_export(struct svc_rqst *);
-int			exp_rootfh(struct auth_domain *, 
+int			exp_rootfh(struct net *, struct auth_domain *,
 					char *path, struct knfsd_fh *, int maxsize);
 __be32			exp_pseudoroot(struct svc_rqst *, struct svc_fh *);
 __be32			nfserrno(int errno);
 
-extern struct cache_detail svc_export_cache;
-
 static inline void exp_put(struct svc_export *exp)
 {
-	cache_put(&exp->h, &svc_export_cache);
+	cache_put(&exp->h, exp->cd);
 }
 
 static inline void exp_get(struct svc_export *exp)

include/linux/sunrpc/svcauth.h

@@ -16,7 +16,6 @@
 #include <linux/sunrpc/cache.h>
 #include <linux/hash.h>
 
-#define SVC_CRED_NGROUPS	32
 struct svc_cred {
 	uid_t			cr_uid;
 	gid_t			cr_gid;
@@ -131,7 +130,7 @@ extern struct auth_domain *auth_domain_lookup(char *name, struct auth_domain *ne
 extern struct auth_domain *auth_domain_find(char *name);
 extern struct auth_domain *auth_unix_lookup(struct net *net, struct in6_addr *addr);
 extern int auth_unix_forget_old(struct auth_domain *dom);
-extern void svcauth_unix_purge(void);
+extern void svcauth_unix_purge(struct net *net);
 extern void svcauth_unix_info_release(struct svc_xprt *xpt);
 extern int svcauth_unix_set_client(struct svc_rqst *rqstp);
 

net/sunrpc/auth_gss/svcauth_gss.c

@@ -969,16 +969,17 @@ svcauth_gss_set_client(struct svc_rqst *rqstp)
 }
 
 static inline int
-gss_write_init_verf(struct cache_detail *cd, struct svc_rqst *rqstp, struct rsi *rsip)
+gss_write_init_verf(struct cache_detail *cd, struct svc_rqst *rqstp,
+		struct xdr_netobj *out_handle, int *major_status)
 {
 	struct rsc *rsci;
 	int        rc;
 
-	if (rsip->major_status != GSS_S_COMPLETE)
+	if (*major_status != GSS_S_COMPLETE)
 		return gss_write_null_verf(rqstp);
-	rsci = gss_svc_searchbyctx(cd, &rsip->out_handle);
+	rsci = gss_svc_searchbyctx(cd, out_handle);
 	if (rsci == NULL) {
-		rsip->major_status = GSS_S_NO_CONTEXT;
+		*major_status = GSS_S_NO_CONTEXT;
 		return gss_write_null_verf(rqstp);
 	}
 	rc = gss_write_verf(rqstp, rsci->mechctx, GSS_SEQ_WIN);
@@ -986,22 +987,13 @@ gss_write_init_verf(struct cache_detail *cd, struct svc_rqst *rqstp, struct rsi
 	return rc;
 }
 
-/*
- * Having read the cred already and found we're in the context
- * initiation case, read the verifier and initiate (or check the results
- * of) upcalls to userspace for help with context initiation.  If
- * the upcall results are available, write the verifier and result.
- * Otherwise, drop the request pending an answer to the upcall.
- */
-static int svcauth_gss_handle_init(struct svc_rqst *rqstp,
-			struct rpc_gss_wire_cred *gc, __be32 *authp)
+static inline int
+gss_read_verf(struct rpc_gss_wire_cred *gc,
+	      struct kvec *argv, __be32 *authp,
+	      struct xdr_netobj *in_handle,
+	      struct xdr_netobj *in_token)
 {
-	struct kvec *argv = &rqstp->rq_arg.head[0];
-	struct kvec *resv = &rqstp->rq_res.head[0];
 	struct xdr_netobj tmpobj;
-	struct rsi *rsip, rsikey;
-	int ret;
-	struct sunrpc_net *sn = net_generic(rqstp->rq_xprt->xpt_net, sunrpc_net_id);
 
 	/* Read the verifier; should be NULL: */
 	*authp = rpc_autherr_badverf;
@@ -1011,24 +1003,67 @@ static int svcauth_gss_handle_init(struct svc_rqst *rqstp,
 		return SVC_DENIED;
 	if (svc_getnl(argv) != 0)
 		return SVC_DENIED;
-
 	/* Martial context handle and token for upcall: */
 	*authp = rpc_autherr_badcred;
 	if (gc->gc_proc == RPC_GSS_PROC_INIT && gc->gc_ctx.len != 0)
 		return SVC_DENIED;
-	memset(&rsikey, 0, sizeof(rsikey));
-	if (dup_netobj(&rsikey.in_handle, &gc->gc_ctx))
+	if (dup_netobj(in_handle, &gc->gc_ctx))
 		return SVC_CLOSE;
 	*authp = rpc_autherr_badverf;
 	if (svc_safe_getnetobj(argv, &tmpobj)) {
-		kfree(rsikey.in_handle.data);
+		kfree(in_handle->data);
 		return SVC_DENIED;
 	}
-	if (dup_netobj(&rsikey.in_token, &tmpobj)) {
-		kfree(rsikey.in_handle.data);
+	if (dup_netobj(in_token, &tmpobj)) {
+		kfree(in_handle->data);
 		return SVC_CLOSE;
 	}
 
+	return 0;
+}
+
+static inline int
+gss_write_resv(struct kvec *resv, size_t size_limit,
+	       struct xdr_netobj *out_handle, struct xdr_netobj *out_token,
+	       int major_status, int minor_status)
+{
+	if (resv->iov_len + 4 > size_limit)
+		return -1;
+	svc_putnl(resv, RPC_SUCCESS);
+	if (svc_safe_putnetobj(resv, out_handle))
+		return -1;
+	if (resv->iov_len + 3 * 4 > size_limit)
+		return -1;
+	svc_putnl(resv, major_status);
+	svc_putnl(resv, minor_status);
+	svc_putnl(resv, GSS_SEQ_WIN);
+	if (svc_safe_putnetobj(resv, out_token))
+		return -1;
+	return 0;
+}
+
+/*
+ * Having read the cred already and found we're in the context
+ * initiation case, read the verifier and initiate (or check the results
+ * of) upcalls to userspace for help with context initiation.  If
+ * the upcall results are available, write the verifier and result.
+ * Otherwise, drop the request pending an answer to the upcall.
+ */
+static int svcauth_gss_handle_init(struct svc_rqst *rqstp,
+			struct rpc_gss_wire_cred *gc, __be32 *authp)
+{
+	struct kvec *argv = &rqstp->rq_arg.head[0];
+	struct kvec *resv = &rqstp->rq_res.head[0];
+	struct rsi *rsip, rsikey;
+	int ret;
+	struct sunrpc_net *sn = net_generic(rqstp->rq_xprt->xpt_net, sunrpc_net_id);
+
+	memset(&rsikey, 0, sizeof(rsikey));
+	ret = gss_read_verf(gc, argv, authp,
+			    &rsikey.in_handle, &rsikey.in_token);
+	if (ret)
+		return ret;
+
 	/* Perform upcall, or find upcall result: */
 	rsip = rsi_lookup(sn->rsi_cache, &rsikey);
 	rsi_free(&rsikey);
@@ -1040,19 +1075,12 @@ static int svcauth_gss_handle_init(struct svc_rqst *rqstp,
 
 	ret = SVC_CLOSE;
 	/* Got an answer to the upcall; use it: */
-	if (gss_write_init_verf(sn->rsc_cache, rqstp, rsip))
-		goto out;
-	if (resv->iov_len + 4 > PAGE_SIZE)
+	if (gss_write_init_verf(sn->rsc_cache, rqstp,
+				&rsip->out_handle, &rsip->major_status))
 		goto out;
-	svc_putnl(resv, RPC_SUCCESS);
-	if (svc_safe_putnetobj(resv, &rsip->out_handle))
-		goto out;
-	if (resv->iov_len + 3 * 4 > PAGE_SIZE)
-		goto out;
-	svc_putnl(resv, rsip->major_status);
-	svc_putnl(resv, rsip->minor_status);
-	svc_putnl(resv, GSS_SEQ_WIN);
-	if (svc_safe_putnetobj(resv, &rsip->out_token))
+	if (gss_write_resv(resv, PAGE_SIZE,
+			   &rsip->out_handle, &rsip->out_token,
+			   rsip->major_status, rsip->minor_status))
 		goto out;
 
 	ret = SVC_COMPLETE;

net/sunrpc/svcauth_unix.c

@@ -347,17 +347,12 @@ static inline int ip_map_update(struct net *net, struct ip_map *ipm,
 	return __ip_map_update(sn->ip_map_cache, ipm, udom, expiry);
 }
 
-
-void svcauth_unix_purge(void)
+void svcauth_unix_purge(struct net *net)
 {
-	struct net *net;
-
-	for_each_net(net) {
 	struct sunrpc_net *sn;
 
 	sn = net_generic(net, sunrpc_net_id);
 	cache_purge(sn->ip_map_cache);
-	}
 }
 EXPORT_SYMBOL_GPL(svcauth_unix_purge);