NFSv4: Retry lease recovery if it failed during a synchronous operation.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 7f60beb40df3213829338ef32bb6705e908ac7b6..c218cc450b9211948987622da4e03702566be5db 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -793,10 +793,17 @@ out:
 int nfs4_recover_expired_lease(struct nfs_server *server)
 {
        struct nfs_client *clp = server->nfs_client;
+       int ret;
 
-       if (test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state))
+       for (;;) {
+               ret = nfs4_wait_clnt_recover(server->client, clp);
+               if (ret != 0)
+                       return ret;
+               if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state))
+                       break;
                nfs4_schedule_state_recovery(clp);
-       return nfs4_wait_clnt_recover(server->client, clp);
+       }
+       return 0;
 }
 
 /*