2391 static int filemap_read_folio(struct file *file, filler_t filler,  in filemap_read_folio()  argument
2401 	error = filler(file, folio);  in filemap_read_folio()
3837 		pgoff_t index, filler_t filler, struct file *file, gfp_t gfp)  in do_read_cache_folio()  argument
3842 	if (!filler)  in do_read_cache_folio()
3843 		filler = mapping->a_ops->read_folio;  in do_read_cache_folio()
3861 		goto filler;  in do_read_cache_folio()
3884 filler:  in do_read_cache_folio()
3885 	err = filemap_read_folio(file, filler, folio);  in do_read_cache_folio()
3915 		filler_t filler, struct file *file)  in read_cache_folio()  argument
3917 	return do_read_cache_folio(mapping, index, filler, file,  in read_cache_folio()
3947 		pgoff_t index, filler_t *filler, struct file *file, gfp_t gfp)  in do_read_cache_page()  argument
3951 	folio = do_read_cache_folio(mapping, index, filler, file, gfp);  in do_read_cache_page()
3958 			pgoff_t index, filler_t *filler, struct file *file)  in read_cache_page()  argument
3960 	return do_read_cache_page(mapping, index, filler, file,  in read_cache_page()