On Tue, Jun 19, 2018 at 05:47:05PM +0300, Dan Carpenter wrote:
> 455 bool filemap_range_has_page(struct address_space *mapping,
> 456 loff_t start_byte, loff_t end_byte)
> 457 {
> 458 struct page *page;
> 459 XA_STATE(xas, &mapping->i_pages, start_byte >> PAGE_SHIFT);
> 460 pgoff_t max = end_byte >> PAGE_SHIFT;
> 461
> 462 if (end_byte < start_byte)
> 463 return false;
> 464
> 465 rcu_read_lock();
> 466 do {
> 467 page = xas_find(&xas, max);
> 468 if (xas_retry(&xas, page))
> 469 continue;
> ^^^^^^^^
> 470 /* Shadow entries don't count */
> 471 if (xa_is_value(page))
> 472 continue;
> ^^^^^^^^
> This is the same as a break because it's a while(0) loop.
Good catch. Fix pushed.
