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=-3.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=no 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 DD619C352BE for ; Thu, 16 Apr 2020 15:46:13 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id A2A7F21927 for ; Thu, 16 Apr 2020 15:46:13 +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="auKzbnWN" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A2A7F21927 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 B7E768E00BE; Thu, 16 Apr 2020 11:46:09 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B2EC98E00BC; Thu, 16 Apr 2020 11:46:09 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9AE4F8E00BE; Thu, 16 Apr 2020 11:46:09 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0217.hostedemail.com [216.40.44.217]) by kanga.kvack.org (Postfix) with ESMTP id 578628E00BC for ; Thu, 16 Apr 2020 11:46:09 -0400 (EDT) Received: from smtpin10.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 012F552CC for ; Thu, 16 Apr 2020 15:46:08 +0000 (UTC) X-FDA: 76714144458.10.chain74_8cf2a0b38123f X-HE-Tag: chain74_8cf2a0b38123f X-Filterd-Recvd-Size: 2508 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf02.hostedemail.com (Postfix) with ESMTP for ; Thu, 16 Apr 2020 15:46:08 +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:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:In-Reply-To:References; bh=if4ORID+BxVDq4S2B7nn9PXXtWXd/o102VgOQcmpw40=; b=auKzbnWNJpIH6JqYDBJsrlYgBS xEQm82w18D1/XvtXaVXhK6bWl+6Iqb8z30NItNvIzf9qZNlSTnB0gvsIVMqycltcuCTyEGq7iMcT3 jgUQUH/eUnWE5BBJ/PWPr4Ksu/5orKT6K7ddLJUBWW6wxgIjh+4KTF6uHLPKg9Wh7o8H/wxNE4XMe 6cUL25vIQfR4FrHr6Y+8uT5cg64QYywWImyKO80Hi7cvdDWka1sh3IVrzICgt99n5+uAh7jzvBKOz dX/ZPriBXO+nli7INbWqndzPBhWb1+O9m/Uear8s2Py92832mN6OfOJeAUufZ9E7ucUwoSytvzIe9 ZZy1xjLg==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jP6iN-00006K-Cp; Thu, 16 Apr 2020 15:46:07 +0000 From: Matthew Wilcox To: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" Subject: [PATCH v2 0/5] Make PageWriteback use the PageLocked optimisation Date: Thu, 16 Apr 2020 08:46:01 -0700 Message-Id: <20200416154606.306-1-willy@infradead.org> X-Mailer: git-send-email 2.21.1 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)" PageWaiters is used by PageWriteback and PageLocked (and no other page flags), so it makes sense to use the same codepaths that have already bee= n optimised for PageLocked, even if there's probably no real performance benefit to be had. v2: Rebased to 5.7-rc1 - Split up patches better - Moved the BUG() from end_page_writeback() to __clear_page_writeback() as requested by Jan Kara. - Converted the BUG() to WARN_ON() - Removed TestClearPageWriteback Matthew Wilcox (Oracle) (5): mm: Remove definition of clear_bit_unlock_is_negative_byte mm: Move PG_writeback into the bottom byte mm: Convert writeback BUG to WARN_ON mm: Use clear_bit_unlock_is_negative_byte for PageWriteback mm: Remove TestClearPageWriteback include/linux/page-flags.h | 8 ++++---- mm/filemap.c | 41 +++++-------------------------------- mm/page-writeback.c | 42 +++++++++++++++++++++++--------------- 3 files changed, 34 insertions(+), 57 deletions(-) --=20 2.25.1