NFSv4.1: Handle SEQ4_STATUS_EXPIRED_SOME_STATE_REVOKED status bit correctly.

If the server tells us that only some state has been revoked, then we
need to run the full TEST_STATEID dog and pony show in order to discover
which locks and delegations are still OK. Currently we blow away all
state, which means that we lose all locks!

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

1 files changed, 13 insertions, 4 deletions

diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 605840dc89cf..f76916169b5f 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -2191,12 +2191,20 @@ static void nfs41_handle_server_reboot(struct nfs_client *clp)
         }
 }
 
-static void nfs41_handle_state_revoked(struct nfs_client *clp)
+static void nfs41_handle_all_state_revoked(struct nfs_client *clp)
 {
         nfs4_reset_all_state(clp);
         dprintk("%s: state revoked on server %s\n", __func__, clp->cl_hostname);
 }
 
+static void nfs41_handle_some_state_revoked(struct nfs_client *clp)
+{
+        nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_nograce);
+        nfs4_schedule_state_manager(clp);
+
+        dprintk("%s: state revoked on server %s\n", __func__, clp->cl_hostname);
+}
+
 static void nfs41_handle_recallable_state_revoked(struct nfs_client *clp)
 {
         /* This will need to handle layouts too */
@@ -2231,10 +2239,11 @@ void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags)
 
         if (flags & SEQ4_STATUS_RESTART_RECLAIM_NEEDED)
                 nfs41_handle_server_reboot(clp);
-        if (flags & (SEQ4_STATUS_EXPIRED_ALL_STATE_REVOKED |
-                            SEQ4_STATUS_EXPIRED_SOME_STATE_REVOKED |
+        if (flags & (SEQ4_STATUS_EXPIRED_ALL_STATE_REVOKED))
+                nfs41_handle_all_state_revoked(clp);
+        if (flags & (SEQ4_STATUS_EXPIRED_SOME_STATE_REVOKED |
                             SEQ4_STATUS_ADMIN_STATE_REVOKED))
-                nfs41_handle_state_revoked(clp);
+                nfs41_handle_some_state_revoked(clp);
         if (flags & SEQ4_STATUS_LEASE_MOVED)
                 nfs4_schedule_lease_moved_recovery(clp);
         if (flags & SEQ4_STATUS_RECALLABLE_STATE_REVOKED)