From: Jens Axboe <axboe@kernel.dk>
Date: Thu, 26 Apr 2018 21:10:42 +0000 (-0600)
Subject: blktrace: kill zero sized write test
X-Git-Tag: fio-3.7~13
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=c1f22c2169c77658bd6efaccc47ee8542055d8f2;p=fio.git

blktrace: kill zero sized write test

Turns out they were flushes. Get rid of the check and turn it into
an assert.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/blktrace.c b/blktrace.c
index b37a54e9..e256d633 100644
--- a/blktrace.c
+++ b/blktrace.c
@@ -312,13 +312,9 @@ static void handle_trace_fs(struct thread_data *td, struct blk_io_trace *t,
 
 	rw = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0;
 
-	/*
-	 * Need to figure out why 0 byte writes end up here sometimes, for
-	 * now just ignore them.
-	 */
-	if (!t->bytes)
-		return;
-	else if (t->bytes > rw_bs[rw])
+	assert(t->bytes);
+
+	if (t->bytes > rw_bs[rw])
 		rw_bs[rw] = t->bytes;
 
 	ios[rw]++;