From 15b934385b3d3adc9bca60f5f263038b44518f07 Mon Sep 17 00:00:00 2001
From: Sunil Mushran <sunil.mushran@oracle.com>
Date: Fri, 4 Sep 2009 11:12:01 -0700
Subject: [PATCH] --- yaml --- r: 157199 b: refs/heads/master c:
 8379e7c46cc48f51197dd663fc6676f47f2a1e71 h: refs/heads/master i:   157197:
 d84f84c56ea0127a9d8e741778d4f917116bbb69   157195:
 48ac2c03298dd0e9e02dfd0ff1c1abac1c156b3b   157191:
 e30994aef75ad30ec99514c6086a3bcbda3173c3   157183:
 c641daace804f499690a95d81781ae6f1b769295 v: v3

---
 [refs]                | 2 +-
 trunk/fs/ocfs2/aops.c | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/[refs] b/[refs]
index f4090b70b8b4..06415d7504a3 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a1b08e75dff3dc18a88444803753e667bb1d126e
+refs/heads/master: 8379e7c46cc48f51197dd663fc6676f47f2a1e71
diff --git a/trunk/fs/ocfs2/aops.c b/trunk/fs/ocfs2/aops.c
index b401654011a2..8a1e61545f41 100644
--- a/trunk/fs/ocfs2/aops.c
+++ b/trunk/fs/ocfs2/aops.c
@@ -1747,8 +1747,8 @@ int ocfs2_write_begin_nolock(struct address_space *mapping,
 	 * we know zeros will only be needed in the first and/or last cluster.
 	 */
 	if (clusters_to_alloc || extents_to_split ||
-	    wc->w_desc[0].c_needs_zero ||
-	    wc->w_desc[wc->w_clen - 1].c_needs_zero)
+	    (wc->w_clen && (wc->w_desc[0].c_needs_zero ||
+			    wc->w_desc[wc->w_clen - 1].c_needs_zero)))
 		cluster_of_pages = 1;
 	else
 		cluster_of_pages = 0;