From patchwork Thu Sep 15 11:55:01 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kirill A . Shutemov" X-Patchwork-Id: 9333465 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id AC918601C2 for ; Thu, 15 Sep 2016 12:10:14 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9BD9828066 for ; Thu, 15 Sep 2016 12:10:14 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8FCE4296A2; Thu, 15 Sep 2016 12:10:14 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4B57928066 for ; Thu, 15 Sep 2016 12:10:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934199AbcIOMJ6 (ORCPT ); Thu, 15 Sep 2016 08:09:58 -0400 Received: from mga03.intel.com ([134.134.136.65]:7909 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933997AbcIOLzm (ORCPT ); Thu, 15 Sep 2016 07:55:42 -0400 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga103.jf.intel.com with ESMTP; 15 Sep 2016 04:55:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.30,339,1470726000"; d="scan'208";a="1050743736" Received: from black.fi.intel.com ([10.237.72.56]) by orsmga002.jf.intel.com with ESMTP; 15 Sep 2016 04:55:38 -0700 Received: by black.fi.intel.com (Postfix, from userid 1000) id E3F1D87F; Thu, 15 Sep 2016 14:55:26 +0300 (EEST) From: "Kirill A. Shutemov" To: "Theodore Ts'o" , Andreas Dilger , Jan Kara , Andrew Morton Cc: Alexander Viro , Hugh Dickins , Andrea Arcangeli , Dave Hansen , Vlastimil Babka , Matthew Wilcox , Ross Zwisler , linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-block@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCHv3 19/41] block: define BIO_MAX_PAGES to HPAGE_PMD_NR if huge page cache enabled Date: Thu, 15 Sep 2016 14:55:01 +0300 Message-Id: <20160915115523.29737-20-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20160915115523.29737-1-kirill.shutemov@linux.intel.com> References: <20160915115523.29737-1-kirill.shutemov@linux.intel.com> Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP We are going to do IO a huge page a time. So we need BIO_MAX_PAGES to be at least HPAGE_PMD_NR. For x86-64, it's 512 pages. Signed-off-by: Kirill A. Shutemov --- include/linux/bio.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/bio.h b/include/linux/bio.h index 23ddf4b46a9b..ebf4f312a642 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -40,7 +40,11 @@ #define BIO_BUG_ON #endif +#ifdef CONFIG_TRANSPARENT_HUGE_PAGECACHE +#define BIO_MAX_PAGES (HPAGE_PMD_NR > 256 ? HPAGE_PMD_NR : 256) +#else #define BIO_MAX_PAGES 256 +#endif #define bio_prio(bio) (bio)->bi_ioprio #define bio_set_prio(bio, prio) ((bio)->bi_ioprio = prio)