On Mon, Jan 28, 2013 at 5:24 PM, Kirill A. Shutemov
<kirill.shutemov@xxxxxxxxxxxxxxx> wrote:
> + page_cache_get(page);
> + spin_lock_irq(&mapping->tree_lock);
> + page->mapping = mapping;
> + if (PageTransHuge(page)) {
> + int i;
> + for (i = 0; i < HPAGE_CACHE_NR; i++) {
> + page_cache_get(page + i);
Page count is raised twice for head page, why?
> + page[i].index = offset + i;
> + error = radix_tree_insert(&mapping->page_tree,
> + offset + i, page + i);
> + if (error) {
> + page_cache_release(page + i);
> + break;
> + }
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>