From 56a131dcf7ed36c3c6e36bea448b674ea85ed5bb Mon Sep 17 00:00:00 2001
From: Jens Axboe <jens.axboe@oracle.com>
Date: Fri, 25 Sep 2009 17:15:03 +0200
Subject: [PATCH] writeback: writeback_inodes_sb() should use
 bdi_start_writeback()

Pointless to iterate other devices looking for a super, when
we have a bdi mapping.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---
 fs/fs-writeback.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 52aa54540079..fb61178c86e3 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -1206,7 +1206,7 @@ void writeback_inodes_sb(struct super_block *sb)
 	nr_to_write = nr_dirty + nr_unstable +
 			(inodes_stat.nr_inodes - inodes_stat.nr_unused);
 
-	bdi_writeback_all(sb, nr_to_write);
+	bdi_start_writeback(sb->s_bdi, nr_to_write);
 }
 EXPORT_SYMBOL(writeback_inodes_sb);
 
-- 
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