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-rw-r--r--fs/nfs/nfs4client.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index 6ee9bf69a7a6..b1024bcc65c8 100644
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -453,6 +453,14 @@ static void nfs4_swap_callback_idents(struct nfs_client *keep,
spin_unlock(&nn->nfs_client_lock);
}
+static bool nfs4_match_client_owner_id(const struct nfs_client *clp1,
+ const struct nfs_client *clp2)
+{
+ if (clp1->cl_owner_id == NULL || clp2->cl_owner_id == NULL)
+ return true;
+ return strcmp(clp1->cl_owner_id, clp2->cl_owner_id) == 0;
+}
+
/**
* nfs40_walk_client_list - Find server that recognizes a client ID
*
@@ -511,6 +519,9 @@ int nfs40_walk_client_list(struct nfs_client *new,
if (pos->cl_clientid != new->cl_clientid)
continue;
+ if (!nfs4_match_client_owner_id(pos, new))
+ continue;
+
atomic_inc(&pos->cl_count);
spin_unlock(&nn->nfs_client_lock);
@@ -657,6 +668,13 @@ int nfs41_walk_client_list(struct nfs_client *new,
if (!nfs4_check_clientid_trunking(pos, new))
continue;
+ /* Unlike NFSv4.0, we know that NFSv4.1 always uses the
+ * uniform string, however someone might switch the
+ * uniquifier string on us.
+ */
+ if (!nfs4_match_client_owner_id(pos, new))
+ continue;
+
atomic_inc(&pos->cl_count);
*result = pos;
status = 0;

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