pass writeback_control to ->write_inode

This gives the filesystem more information about the writeback that
is happening.  Trond requested this for the NFS unstable write handling,
and other filesystems might benefit from this too by beeing able to
distinguish between the different callers in more detail.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/adfs/adfs.h b/fs/adfs/adfs.h
index 9cc1877..2ff622f 100644
--- a/fs/adfs/adfs.h
+++ b/fs/adfs/adfs.h
@@ -121,7 +121,7 @@
 
 /* Inode stuff */
 struct inode *adfs_iget(struct super_block *sb, struct object_info *obj);
-int adfs_write_inode(struct inode *inode,int unused);
+int adfs_write_inode(struct inode *inode, struct writeback_control *wbc);
 int adfs_notify_change(struct dentry *dentry, struct iattr *attr);
 
 /* map.c */