Re: [PATCH -mm 4/7] mm: thp: turn put_compound_page() into__put_page_tail()

[Peter Zijlstra]

On Wed, Dec 18, 2013 at 08:19:58PM +0100, Oleg Nesterov wrote:
> @@ -247,7 +242,7 @@ bool __get_page_tail(struct page *page)
>  	bool got;
>  	struct page *page_head = compound_trans_head(page);
>  
> -	/* Ref to put_compound_page() comment. */
> +	/* Ref to __put_page_tail() comment. */
>  	if (!__compound_tail_refcounted(page_head)) {
>  		smp_rmb();
>  		if (likely(PageTail(page))) {

What code is this against, my local tree doesn't have that smp_rmb().

This suggests its a recent patch; which is good since then we can still
drop it and wait for people to send one with a proper comment in.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/