fs: export empty_aops

With the ->sync_page() hook gone, we have a few users that
add their own static address_space_operations without any
functions defined.

fs/inode.c already has an empty_aops that it uses for init
purposes. Lets export that and use it in the places where
an otherwise empty aops was defined.

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c
index 9d2dc6b4348..1168059c7ef 100644
--- a/fs/nilfs2/page.c
+++ b/fs/nilfs2/page.c
@@ -495,8 +495,6 @@ unsigned nilfs_page_count_clean_buffers(struct page *page,
 void nilfs_mapping_init(struct address_space *mapping,
                         struct backing_dev_info *bdi)
 {
-        static const struct address_space_operations empty_aops;
-
         mapping->host = NULL;
         mapping->flags = 0;
         mapping_set_gfp_mask(mapping, GFP_NOFS);