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authorChristoph Hellwig <hch@lst.de>2015-01-14 10:42:37 +0100
committerJens Axboe <axboe@fb.com>2015-01-20 14:03:05 -0700
commitb83ae6d421435c6204150300f1c25bfbd39cd62b (patch)
tree99c6b661ab7de05c2fd49aa62624d2d6bf8abc69 /fs/kernfs
parentde1414a654e66b81b5348dbc5259ecf2fb61655e (diff)
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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>
Diffstat (limited to 'fs/kernfs')
-rw-r--r--fs/kernfs/inode.c1
1 files changed, 0 insertions, 1 deletions
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);