NFSv4: Fix state recovery when the client runs over the grace period

If the client for some reason is not able to recover all its state within
the time allotted for the grace period, and the server reboots again, the
client is not allowed to recover the state that was 'lost' using reboot
recovery.

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

1 files changed, 4 insertions, 3 deletions

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index d53aa2dace8..279ab36b5a6 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -984,7 +984,7 @@ static int nfs4_recover_expired_lease(struct nfs_server *server)
                 ret = nfs4_wait_clnt_recover(server->client, clp);
                 if (ret != 0)
                         return ret;
-                if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state))
+                if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state))
                         break;
                 nfs4_schedule_state_recovery(clp);
         }
@@ -2942,7 +2942,6 @@ static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cre
                 spin_lock(&clp->cl_lock);
                 clp->cl_lease_time = fsinfo.lease_time * HZ;
                 clp->cl_last_renewal = now;
-                clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
                 spin_unlock(&clp->cl_lock);
         }
         return status;
@@ -3690,11 +3689,13 @@ int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
 }
 
 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops = {
+        .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
         .recover_open   = nfs4_open_reclaim,
         .recover_lock   = nfs4_lock_reclaim,
 };
 
-struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops = {
+struct nfs4_state_recovery_ops nfs4_nograce_recovery_ops = {
+        .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
         .recover_open   = nfs4_open_expired,
         .recover_lock   = nfs4_lock_expired,
 };