From 721d0f3e670f7dacf11af5b19acc6b2c32ed52fb Mon Sep 17 00:00:00 2001
From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Thu, 29 Aug 2019 09:43:34 -0600
Subject: [PATCH 0156/2944] blkcg: blk-iocost: predeclare used structs

commit 8d1c1560c383004e09c6a39498094671cc664e6b upstream.

Fixes: 7caa47151ab2 ("blkcg: implement blk-iocost")
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Signed-off-by: Jiufei Xue <jiufei.xue@linux.alibaba.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
---
 include/trace/events/iocost.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/trace/events/iocost.h b/include/trace/events/iocost.h
index ec2217d..7ecaa65b 100644
--- a/include/trace/events/iocost.h
+++ b/include/trace/events/iocost.h
@@ -2,6 +2,10 @@
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM iocost
 
+struct ioc;
+struct ioc_now;
+struct ioc_gq;
+
 #if !defined(_TRACE_BLK_IOCOST_H) || defined(TRACE_HEADER_MULTI_READ)
 #define _TRACE_BLK_IOCOST_H
 
-- 
1.8.3.1