In preparation for unifying the read_cache_page() and read_folio()
implementations, make nfs_symlink_filler() get the inode
from the page instead of passing it in from read_cache_page().
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
 
 static int nfs_symlink_filler(void *data, struct page *page)
 {
-       struct inode *inode = data;
+       struct inode *inode = page->mapping->host;
        int error;
 
        error = NFS_PROTO(inode)->readlink(inode, page, 0, PAGE_SIZE);
                if (err)
                        return err;
                page = read_cache_page(&inode->i_data, 0, nfs_symlink_filler,
-                               inode);
+                               NULL);
                if (IS_ERR(page))
                        return ERR_CAST(page);
        }