From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E9687C83003 for ; Wed, 29 Apr 2020 13:37:12 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id AB15A206D6 for ; Wed, 29 Apr 2020 13:37:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="SZc9+QON" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AB15A206D6 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 1A3468E001F; Wed, 29 Apr 2020 09:37:02 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D07828E000D; Wed, 29 Apr 2020 09:37:01 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4CAF38E0025; Wed, 29 Apr 2020 09:37:01 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id D0A328E001B for ; Wed, 29 Apr 2020 09:37:00 -0400 (EDT) Received: from smtpin23.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 808CA8248047 for ; Wed, 29 Apr 2020 13:37:00 +0000 (UTC) X-FDA: 76760993400.23.train86_3d290f54dbe18 X-HE-Tag: train86_3d290f54dbe18 X-Filterd-Recvd-Size: 2475 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf16.hostedemail.com (Postfix) with ESMTP for ; Wed, 29 Apr 2020 13:37:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=Yi1wYt4iXlkSO38vWez4amiBBSDF7tSr77p/65sccCE=; b=SZc9+QONeaWnQfhpZwMykTT0We gzaZj2YKRGIYSlnXGd+e23wDBmGYEAYxqpT78aApEI3LyzjZ84XCMRxSv9kuXJJw+vQXa7SoYppXd pVyDoz+hUZSCDSnLqRfwfXp50wQbt/rptwJ2sPcX/LfDx7V7W8KzK8U6+cWmhf88XkQ4Cb0V8qFU6 Z73OXdNi4/Nq/EEbjbN32WJoLPWDdEMSuOPVUTWcvzAwAyPmIhGWlLo4DxqS51pfJGDFbfTACszb5 V9G87+OG9myxtn+UxccqD7HPrVKC3R9d8M05VwVZp2OAAgtNI2r1AfBV8ALYFkfrCvS52L8ZY7eoN aJw7KWvg==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jTmtX-0005uZ-75; Wed, 29 Apr 2020 13:36:59 +0000 From: Matthew Wilcox To: linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 04/25] mm: Introduce offset_in_thp Date: Wed, 29 Apr 2020 06:36:36 -0700 Message-Id: <20200429133657.22632-5-willy@infradead.org> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200429133657.22632-1-willy@infradead.org> References: <20200429133657.22632-1-willy@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: "Matthew Wilcox (Oracle)" Mirroring offset_in_page(), this gives you the offset within this particular page, no matter what size page it is. It optimises down to offset_in_page() if CONFIG_TRANSPARENT_HUGEPAGE is not set. Signed-off-by: Matthew Wilcox (Oracle) --- include/linux/mm.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index 088acbda722d..9a55dce6a535 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1577,6 +1577,7 @@ static inline void clear_page_pfmemalloc(struct pag= e *page) extern void pagefault_out_of_memory(void); =20 #define offset_in_page(p) ((unsigned long)(p) & ~PAGE_MASK) +#define offset_in_thp(page, p) ((unsigned long)(p) & (thp_size(page) - 1= )) =20 /* * Flags passed to show_mem() and show_free_areas() to suppress output i= n --=20 2.26.2