nfsd: pass network context to idmap init/exit functions

These functions will be called from per-net operations.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

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/nfs4idmap.c

@@ -469,24 +469,24 @@ nametoid_update(struct cache_detail *cd, struct ent *new, struct ent *old)
  */
 
 int
-nfsd_idmap_init(void)
+nfsd_idmap_init(struct net *net)
 {
 	int rv;
 
-	rv = cache_register_net(&idtoname_cache, &init_net);
+	rv = cache_register_net(&idtoname_cache, net);
 	if (rv)
 		return rv;
-	rv = cache_register_net(&nametoid_cache, &init_net);
+	rv = cache_register_net(&nametoid_cache, net);
 	if (rv)
-		cache_unregister_net(&idtoname_cache, &init_net);
+		cache_unregister_net(&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);
+	cache_unregister_net(&idtoname_cache, net);
+	cache_unregister_net(&nametoid_cache, net);
 }
 
 static int

fs/nfsd/nfsctl.c

@@ -1186,7 +1186,7 @@ static int __init init_nfsd(void)
 	if (retval)
 		goto out_free_stat;
 	nfsd_lockd_init();	/* lockd->nfsd callbacks */
-	retval = nfsd_idmap_init();
+	retval = nfsd_idmap_init(&init_net);
 	if (retval)
 		goto out_free_lockd;
 	retval = create_proc_exports_entry();
@@ -1200,7 +1200,7 @@ static int __init init_nfsd(void)
 	remove_proc_entry("fs/nfs/exports", NULL);
 	remove_proc_entry("fs/nfs", NULL);
 out_free_idmap:
-	nfsd_idmap_shutdown();
+	nfsd_idmap_shutdown(&init_net);
 out_free_lockd:
 	nfsd_lockd_shutdown();
 	nfsd_reply_cache_shutdown();
@@ -1223,7 +1223,7 @@ static void __exit exit_nfsd(void)
 	remove_proc_entry("fs/nfs", NULL);
 	nfsd_stat_shutdown();
 	nfsd_lockd_shutdown();
-	nfsd_idmap_shutdown();
+	nfsd_idmap_shutdown(&init_net);
 	nfsd4_free_slabs();
 	nfsd_fault_inject_cleanup();
 	unregister_filesystem(&nfsd_fs_type);