Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754830AbbKXSPm (ORCPT ); Tue, 24 Nov 2015 13:15:42 -0500 Received: from gum.cmpxchg.org ([85.214.110.215]:45682 "EHLO gum.cmpxchg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753009AbbKXSPk (ORCPT ); Tue, 24 Nov 2015 13:15:40 -0500 Date: Tue, 24 Nov 2015 13:15:21 -0500 From: Johannes Weiner To: Vladimir Davydov Cc: "Kirill A. Shutemov" , Sergey Senozhatsky , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH -mm v2] mm: add page_check_address_transhuge helper Message-ID: <20151124181521.GA19885@cmpxchg.org> References: <1448011913-12121-1-git-send-email-vdavydov@virtuozzo.com> <20151124042941.GE705@swordfish> <20151124090930.GB15712@node.shutemov.name> <20151124093617.GE29014@esperanza> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20151124093617.GE29014@esperanza> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1228 Lines: 30 On Tue, Nov 24, 2015 at 12:36:17PM +0300, Vladimir Davydov wrote: > diff --git a/include/linux/rmap.h b/include/linux/rmap.h > index b9eedc63e9e6..77d1ba57d495 100644 > --- a/include/linux/rmap.h > +++ b/include/linux/rmap.h > @@ -219,9 +219,20 @@ static inline pte_t *page_check_address(struct page *page, struct mm_struct *mm, > * Used by idle page tracking to check if a page was referenced via page > * tables. > */ > +#ifdef CONFIG_TRANSPARENT_HUGEPAGE > bool page_check_address_transhuge(struct page *page, struct mm_struct *mm, > unsigned long address, pmd_t **pmdp, > pte_t **ptep, spinlock_t **ptlp); > +#else > +static inline bool page_check_address_transhuge(struct page *page, > + struct mm_struct *mm, unsigned long address, > + pmd_t **pmdp, pte_t **ptep, spinlock_t **ptlp) > +{ > + *ptep = page_check_address(page, mm, address, ptlp, 0); > + *pmdp = NULL; > + return !!*ptep; > +} > +#endif Tested-by: Johannes Weiner -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/