From cd339cdd6fb774e549e98b548ac1be15aa40e80a Mon Sep 17 00:00:00 2001
From: Dave Chinner <dchinner@redhat.com>
Date: Tue, 12 Mar 2013 23:30:34 +1100
Subject: [PATCH] --- yaml --- r: 371042 b: refs/heads/master c:
 c163f9a1760229a95d04e37b332de7d5c1c225cd h: refs/heads/master v: v3

---
 [refs]                 | 2 +-
 trunk/fs/xfs/xfs_buf.c | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index e0402ac238e5..1dea66419dca 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d8ddfe81c7e4fe41b8ec342cc288d58aecdf7c47
+refs/heads/master: c163f9a1760229a95d04e37b332de7d5c1c225cd
diff --git a/trunk/fs/xfs/xfs_buf.c b/trunk/fs/xfs/xfs_buf.c
index 50eb603e0cc1..82b70bda9f47 100644
--- a/trunk/fs/xfs/xfs_buf.c
+++ b/trunk/fs/xfs/xfs_buf.c
@@ -1336,6 +1336,12 @@ _xfs_buf_ioapply(
 	int		size;
 	int		i;
 
+	/*
+	 * Make sure we capture only current IO errors rather than stale errors
+	 * left over from previous use of the buffer (e.g. failed readahead).
+	 */
+	bp->b_error = 0;
+
 	if (bp->b_flags & XBF_WRITE) {
 		if (bp->b_flags & XBF_SYNCIO)
 			rw = WRITE_SYNC;