From: Jan Kara <jack@suse.cz>
Date: Thu, 4 Apr 2013 10:18:28 +0000 (-0400)
Subject: iowatcher: Handle REQUEUE events
X-Git-Tag: blktrace-1.1.0~2^2~13
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=ff045fe73d4c1f84155e15ff8b228ee65f82373c;p=blktrace.git

iowatcher: Handle REQUEUE events

When requeue event happens we have to decrease number of in-flight
requests. Otherwise they drift away.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
---

diff --git a/iowatcher/blkparse.c b/iowatcher/blkparse.c
index c9ae3e7..43eb269 100644
--- a/iowatcher/blkparse.c
+++ b/iowatcher/blkparse.c
@@ -1052,6 +1052,11 @@ void add_pending_io(struct trace *trace, struct graph_line_data *gld)
 			hash_queued_io(trace->io);
 		return;
 	}
+	if (action == __BLK_TA_REQUEUE) {
+		if (ios_in_flight > 0)
+			ios_in_flight--;
+		return;
+	}
 	if (action != __BLK_TA_ISSUE)
 		return;