2.6.32-longterm review patch.  If anyone has any objections, please let me know.

------------------

From: Trond Myklebust <[email protected]>

commit a9ed2e2583747fb3139a764c317fac58893b968f upstream.

If our lease expires, and the server reboots while we're recovering, we
need to be able to wait until the grace period is over.

Signed-off-by: Trond Myklebust <[email protected]>
Cc: Chuck Lever <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 fs/nfs/nfs4proc.c |   26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1490,7 +1490,7 @@ static int _nfs4_open_expired(struct nfs
        return ret;
 }
 
-static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct 
nfs4_state *state)
+static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct 
nfs4_state *state)
 {
        struct nfs_server *server = NFS_SERVER(state->inode);
        struct nfs4_exception exception = { };
@@ -1498,10 +1498,16 @@ static inline int nfs4_do_open_expired(s
 
        do {
                err = _nfs4_open_expired(ctx, state);
-               if (err != -NFS4ERR_DELAY)
-                       break;
-               nfs4_handle_exception(server, err, &exception);
+               switch (err) {
+               default:
+                       goto out;
+               case -NFS4ERR_GRACE:
+               case -NFS4ERR_DELAY:
+                       nfs4_handle_exception(server, err, &exception);
+                       err = 0;
+               }
        } while (exception.retry);
+out:
        return err;
 }
 
@@ -4111,10 +4117,16 @@ static int nfs4_lock_expired(struct nfs4
                if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
                        return 0;
                err = _nfs4_do_setlk(state, F_SETLK, request, 0);
-               if (err != -NFS4ERR_DELAY)
-                       break;
-               nfs4_handle_exception(server, err, &exception);
+               switch (err) {
+               default:
+                       goto out;
+               case -NFS4ERR_GRACE:
+               case -NFS4ERR_DELAY:
+                       nfs4_handle_exception(server, err, &exception);
+                       err = 0;
+               }
        } while (exception.retry);
+out:
        return err;
 }
 


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