From b83ae6d421435c6204150300f1c25bfbd39cd62b Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Wed, 14 Jan 2015 10:42:37 +0100
Subject: fs: remove mapping->backing_dev_info

Now that we never use the backing_dev_info pointer in struct address_space
we can simply remove it and save 4 to 8 bytes in every inode.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Reviewed-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
---
 fs/kernfs/inode.c | 1 -
 1 file changed, 1 deletion(-)

(limited to 'fs/kernfs')

diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c
index 06f06887b2d2..9000874a945b 100644
--- a/fs/kernfs/inode.c
+++ b/fs/kernfs/inode.c
@@ -286,7 +286,6 @@ static void kernfs_init_inode(struct kernfs_node *kn, struct inode *inode)
 	kernfs_get(kn);
 	inode->i_private = kn;
 	inode->i_mapping->a_ops = &kernfs_aops;
-	inode->i_mapping->backing_dev_info = &noop_backing_dev_info;
 	inode->i_op = &kernfs_iops;
 
 	set_default_inode_attr(inode, kn->mode);
-- 
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