From 3f326f0c479af8d57309ba16d221026d426b0c7e Mon Sep 17 00:00:00 2001
From: Li Zefan <lizf@cn.fujitsu.com>
Date: Fri, 3 Apr 2009 15:31:34 +0800
Subject: [PATCH] --- yaml --- r: 142769 b: refs/heads/master c:
 7635b03adf3d7b84da7649b81efa91e6ebf11b85 h: refs/heads/master i:   142767:
 bf2b500fad7ae32a684880919ac0ec1cdbb49b16 v: v3

---
 [refs]                        | 2 +-
 trunk/kernel/trace/blktrace.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index 15056953a475..810889566c8e 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a4b3ada83d06554d307dd54abdc62b2e5648264a
+refs/heads/master: 7635b03adf3d7b84da7649b81efa91e6ebf11b85
diff --git a/trunk/kernel/trace/blktrace.c b/trunk/kernel/trace/blktrace.c
index a400b861fad3..73d7860b72e2 100644
--- a/trunk/kernel/trace/blktrace.c
+++ b/trunk/kernel/trace/blktrace.c
@@ -327,7 +327,7 @@ static ssize_t blk_msg_write(struct file *filp, const char __user *buffer,
 	char *msg;
 	struct blk_trace *bt;
 
-	if (count > BLK_TN_MAX_MSG - 1)
+	if (count >= BLK_TN_MAX_MSG)
 		return -EINVAL;
 
 	msg = kmalloc(count + 1, GFP_KERNEL);