[tip:tracing/urgent] trace_stack: Fix seqfile memory leak

[tip-bot for Li Zefan <lizf@cn.fujitsu.com>]

Commit-ID:  d8cc1ab793993c886c62abf77c93287df33ffd8b
Gitweb:     http://git.kernel.org/tip/d8cc1ab793993c886c62abf77c93287df33ffd8b
Author:     Li Zefan <lizf@cn.fujitsu.com>
AuthorDate: Thu, 23 Jul 2009 11:28:40 +0800
Committer:  Steven Rostedt <rostedt@goodmis.org>
CommitDate: Thu, 23 Jul 2009 09:52:09 -0400

trace_stack: Fix seqfile memory leak

Every time we cat stack_trace, we leak memory allocated by seq_open().

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4A67D8E8.3020500@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>


---
 kernel/trace/trace_stack.c |    7 ++-----
 1 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c
index e644af9..6a2a9d4 100644
--- a/kernel/trace/trace_stack.c
+++ b/kernel/trace/trace_stack.c
@@ -301,17 +301,14 @@ static const struct seq_operations stack_trace_seq_ops = {
 
 static int stack_trace_open(struct inode *inode, struct file *file)
 {
-	int ret;
-
-	ret = seq_open(file, &stack_trace_seq_ops);
-
-	return ret;
+	return seq_open(file, &stack_trace_seq_ops);
 }
 
 static const struct file_operations stack_trace_fops = {
 	.open		= stack_trace_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
+	.release	= seq_release,
 };
 
 int