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, 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 E523FC2D0E5 for ; Thu, 26 Mar 2020 12:24:35 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id A8FF12070A for ; Thu, 26 Mar 2020 12:24:35 +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="LlyYUlD2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A8FF12070A 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 4DBEE6B0087; Thu, 26 Mar 2020 08:24:35 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 48F736B0088; Thu, 26 Mar 2020 08:24:35 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3A62B6B0089; Thu, 26 Mar 2020 08:24:35 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0243.hostedemail.com [216.40.44.243]) by kanga.kvack.org (Postfix) with ESMTP id 1E8276B0087 for ; Thu, 26 Mar 2020 08:24:35 -0400 (EDT) Received: from smtpin06.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 140FD8248D7C for ; Thu, 26 Mar 2020 12:24:35 +0000 (UTC) X-FDA: 76637431710.06.corn52_4518c76d3a358 X-HE-Tag: corn52_4518c76d3a358 X-Filterd-Recvd-Size: 2205 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf41.hostedemail.com (Postfix) with ESMTP for ; Thu, 26 Mar 2020 12:24:34 +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=xyyTb0+i+AMch+w5Hz5JqGdUkomd7RsodjoZ9/zMceM=; b=LlyYUlD2f6KjrTQfNDod1JtocW qZ0Dt9/J7X3i21JNljBzjWslwtwFOXr+ldiGwT19YdpOE5u9fpD+GDTnQjGVEaDApjlmpMmLi2y88 DCz2/xrL+SrNFTqwJFgoH+OqRV2NZ/eVd9SzM49ynaMwQ7TJPFkwopGr6nksOzp020f/dYFcckGNI tyZ/2Rc8wMN1BeO4575F8wsig3/FsN1N7r4po2mPUou92l0fN6NecsRKhwzdVTwJXfwwhl4uBTbej rniV5b4bkw2I2itJvkvEeykc3+/kRt/mWSzjxhFSdlo3LbxAuAruDnx9I5RO2nfb5Idio1Hk2zAUz T9HqkSng==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jHRYk-0005Ow-5O; Thu, 26 Mar 2020 12:24:30 +0000 From: Matthew Wilcox To: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" Subject: [PATCH 0/2] Make PageWriteback use the PageLocked optimisation Date: Thu, 26 Mar 2020 05:24:27 -0700 Message-Id: <20200326122429.20710-1-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. Matthew Wilcox (Oracle) (2): mm: Remove definition of clear_bit_unlock_is_negative_byte mm: Use clear_bit_unlock_is_negative_byte for PageWriteback include/linux/page-flags.h | 6 +++--- mm/filemap.c | 42 ++++++-------------------------------- mm/page-writeback.c | 37 ++++++++++++++++++--------------- 3 files changed, 29 insertions(+), 56 deletions(-) base-commit: 5149100c3aebe5e640d6ff68e0b5e5a7eb8638e0 --=20 2.25.1