From: Jens Axboe <axboe@suse.de>
Date: Thu, 2 Feb 2006 08:23:56 +0000 (+0100)
Subject: [PATCH] blktrace: make write_data() return early with buflen == 0
X-Git-Tag: blktrace-0.99.1~85
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=6480258ab0432d3a09ef884d4cc49e11f8c3ccee;p=blktrace.git

[PATCH] blktrace: make write_data() return early with buflen == 0
---

diff --git a/blktrace.c b/blktrace.c
index 024675b..8601194 100644
--- a/blktrace.c
+++ b/blktrace.c
@@ -407,6 +407,9 @@ static int write_data(struct thread_information *tip,
 {
 	int ret;
 
+	if (!buf_len)
+		return 0;
+
 	while (1) {
 		ret = fwrite(buf, buf_len, 1, tip->ofile);
 		if (ret == 1)