* setting I_SYNC flag and calling inode_sync_complete() to clear it.
  */
 static int
-__writeback_single_inode(struct inode *inode, struct bdi_writeback *wb,
-                        struct writeback_control *wbc)
+__writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
 {
        struct address_space *mapping = inode->i_mapping;
        long nr_to_write = wbc->nr_to_write;
        inode->i_state |= I_SYNC;
        spin_unlock(&inode->i_lock);
 
-       ret = __writeback_single_inode(inode, wb, wbc);
+       ret = __writeback_single_inode(inode, wbc);
 
        spin_lock(&wb->list_lock);
        spin_lock(&inode->i_lock);
                 * We use I_SYNC to pin the inode in memory. While it is set
                 * evict_inode() will wait so the inode cannot be freed.
                 */
-               __writeback_single_inode(inode, wb, &wbc);
+               __writeback_single_inode(inode, &wbc);
 
                work->nr_pages -= write_chunk - wbc.nr_to_write;
                wrote += write_chunk - wbc.nr_to_write;