fs: Assign bdi in super_block

We do this automatically in get_sb_bdev() from the set_bdev_super()
callback. Filesystems that have their own private backing_dev_info
must assign that in ->fill_super().

Note that ->s_bdi assignment is required for proper writeback!

Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index db29588874ac..90162fb3bf04 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1342,6 +1342,7 @@ struct super_block {
         int                     s_nr_dentry_unused;     /* # of dentry on lru */
 
         struct block_device     *s_bdev;
+        struct backing_dev_info *s_bdi;
         struct mtd_info         *s_mtd;
         struct list_head        s_instances;
         struct quota_info       s_dquot;        /* Diskquota specific options */