From 8c567f4c41b59cfd7e11538505a38d71136395b1 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Tue, 23 Dec 2008 15:21:48 -0500
Subject: [PATCH] --- yaml --- r: 124733 b: refs/heads/master c:
 f3c76491e7ecacbb7942633f3b2a3514b7476ef9 h: refs/heads/master i:   124731:
 cd71d4b322a0077f7deb7a1b94aa42dda646d057 v: v3

---
 [refs]                   | 2 +-
 trunk/fs/nfs/nfs4state.c | 8 ++++++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/[refs] b/[refs]
index 1a0209c1305d..a624b46636e3 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e005e8041c132af9f70862e1387a222198f95e7f
+refs/heads/master: f3c76491e7ecacbb7942633f3b2a3514b7476ef9
diff --git a/trunk/fs/nfs/nfs4state.c b/trunk/fs/nfs/nfs4state.c
index 83f3dd39ac55..9e76712dcae9 100644
--- a/trunk/fs/nfs/nfs4state.c
+++ b/trunk/fs/nfs/nfs4state.c
@@ -1112,7 +1112,7 @@ static void nfs4_state_manager(struct nfs_client *clp)
 	int status = 0;
 
 	/* Ensure exclusive access to NFSv4 state */
-	while (!list_empty(&clp->cl_superblocks)) {
+	for(;;) {
 		if (test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) {
 			/* We're going to have to re-establish a clientid */
 			status = nfs4_reclaim_lease(clp);
@@ -1161,7 +1161,11 @@ static void nfs4_state_manager(struct nfs_client *clp)
 		}
 
 		nfs4_clear_state_manager_bit(clp);
-		break;
+		/* Did we race with an attempt to give us more work? */
+		if (clp->cl_state == 0)
+			break;
+		if (test_and_set_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) != 0)
+			break;
 	}
 	return;
 out_error: