From 1273191bd688c2e7c50c1a1724cfbf93a234fbdf Mon Sep 17 00:00:00 2001
From: Jens Axboe <axboe@kernel.dk>
Date: Thu, 28 Sep 2017 11:28:55 -0600
Subject: [PATCH] writeback: make wb_start_writeback() static

References: bnc#1081213
Patch-mainline: v4.15-rc1
Git-commit: 9dfb176fae57a1dea68531fd25e867037e4d9bac

We don't have any callers outside of fs-writeback.c anymore,
make it private.

Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Tested-by: Chris Mason <clm@fb.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Mel Gorman <mgorman@suse.de>
---
 fs/fs-writeback.c           | 4 ++--
 include/linux/backing-dev.h | 2 --
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 1424538b19af..b587b1fb9b32 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -933,8 +933,8 @@ static void bdi_split_work_to_wbs(struct backing_dev_info *bdi,
 
 #endif	/* CONFIG_CGROUP_WRITEBACK */
 
-void wb_start_writeback(struct bdi_writeback *wb, long nr_pages,
-			enum wb_reason reason)
+static void wb_start_writeback(struct bdi_writeback *wb, long nr_pages,
+				enum wb_reason reason)
 {
 	struct wb_writeback_work *work;
 
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index c3253d891025..e6cd1b1039e6 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -38,8 +38,6 @@ static inline struct backing_dev_info *bdi_alloc(gfp_t gfp_mask)
 	return bdi_alloc_node(gfp_mask, NUMA_NO_NODE);
 }
 
-void wb_start_writeback(struct bdi_writeback *wb, long nr_pages,
-			enum wb_reason reason);
 void wb_start_background_writeback(struct bdi_writeback *wb);
 void wb_workfn(struct work_struct *work);
 void wb_wakeup_delayed(struct bdi_writeback *wb);