1 files changed, 20 insertions, 0 deletions

diff --git a/fs/nfs/pnfs_dev.c b/fs/nfs/pnfs_dev.c
index fb9498d91f6a..6fda5228ef56 100644
--- a/fs/nfs/pnfs_dev.c
+++ b/fs/nfs/pnfs_dev.c
@@ -156,6 +156,7 @@ nfs4_init_deviceid_node(struct nfs4_deviceid_node *d,
         INIT_HLIST_NODE(&d->tmpnode);
         d->ld = ld;
         d->nfs_client = nfs_client;
+        d->flags = 0;
         d->deviceid = *id;
         atomic_set(&d->ref, 1);
 }
@@ -253,3 +254,22 @@ nfs4_deviceid_purge_client(const struct nfs_client *clp)
         for (h = 0; h < NFS4_DEVICE_ID_HASH_SIZE; h++)
                 _deviceid_purge_client(clp, h);
 }
+
+/*
+ * Stop use of all deviceids associated with an nfs_client
+ */
+void
+nfs4_deviceid_mark_client_invalid(struct nfs_client *clp)
+{
+        struct nfs4_deviceid_node *d;
+        struct hlist_node *n;
+        int i;
+
+        rcu_read_lock();
+        for (i = 0; i < NFS4_DEVICE_ID_HASH_SIZE; i ++){
+                hlist_for_each_entry_rcu(d, n, &nfs4_deviceid_cache[i], node)
+                        if (d->nfs_client == clp)
+                                set_bit(NFS_DEVICEID_INVALID, &d->flags);
+        }
+        rcu_read_unlock();
+}