Revert "NFSv4: use unique client identifiers in network namespaces"

This reverts commit 50c790a0b69bdc420f00f30bdf348d6c90194c78.

The functionality is believed to be capable of causing regressions in
existing setups, so the author has requested that it be reverted.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

diff --git a/fs/nfs/sysfs.c b/fs/nfs/sysfs.c
index 886ed1eec2e59482b52c6efd44c688babd2d1814..a6f740366963100b24a8fd8d6cdac139385283b3 100644 (file)
--- a/fs/nfs/sysfs.c
+++ b/fs/nfs/sysfs.c
@@ -151,18 +151,6 @@ static struct kobj_type nfs_netns_client_type = {
        .namespace = nfs_netns_client_namespace,
 };
 
-static void assign_unique_clientid(struct nfs_netns_client *clp)
-{
-       unsigned char client_uuid[16];
-       char *uuid_str = kmalloc(UUID_STRING_LEN + 1, GFP_KERNEL);
-
-       if (uuid_str) {
-               generate_random_uuid(client_uuid);
-               sprintf(uuid_str, "%pU", client_uuid);
-               rcu_assign_pointer(clp->identifier, uuid_str);
-       }
-}
-
 static struct nfs_netns_client *nfs_netns_client_alloc(struct kobject *parent,
                struct net *net)
 {
@@ -170,8 +158,6 @@ static struct nfs_netns_client *nfs_netns_client_alloc(struct kobject *parent,
 
        p = kzalloc(sizeof(*p), GFP_KERNEL);
        if (p) {
-               if (net != &init_net)
-                       assign_unique_clientid(p);
                p->net = net;
                p->kobject.kset = nfs_client_kset;
                if (kobject_init_and_add(&p->kobject, &nfs_netns_client_type,