From patchwork Tue Sep 8 19:55:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 11764223 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3E04D1599 for ; Tue, 8 Sep 2020 19:56:11 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id DD21A21924 for ; Tue, 8 Sep 2020 19:55:55 +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="swD5u+hT" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DD21A21924 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 390F86B005A; Tue, 8 Sep 2020 15:55:52 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 2A3776B005D; Tue, 8 Sep 2020 15:55:52 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0CE246B0062; Tue, 8 Sep 2020 15:55:52 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0160.hostedemail.com [216.40.44.160]) by kanga.kvack.org (Postfix) with ESMTP id EBEB16B005A for ; Tue, 8 Sep 2020 15:55:51 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id A3CFE180AD802 for ; Tue, 8 Sep 2020 19:55:51 +0000 (UTC) X-FDA: 77240949702.21.corn94_300d44d270d7 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin21.hostedemail.com (Postfix) with ESMTP id 72195180442C0 for ; Tue, 8 Sep 2020 19:55:51 +0000 (UTC) X-Spam-Summary: 1,0,0,0b5fb77f17a87c70,d41d8cd98f00b204,willy@infradead.org,,RULES_HIT:41:69:355:379:541:968:973:988:989:1260:1311:1314:1345:1437:1515:1534:1541:1711:1730:1747:1777:1792:2393:2559:2562:2693:3138:3139:3140:3141:3142:3352:3865:3866:3867:3868:3870:3871:3874:4250:4605:5007:6117:6119:6120:6261:6653:7901:8603:9389:10004:11026:11473:11658:11914:12043:12050:12296:12297:12438:12683:12895:13069:13161:13229:13311:13357:13894:14096:14384:14394:14721:21080:21324:21451:21627:21990:30034:30054:30070:30091,0,RBL:90.155.50.34:@infradead.org:.lbl8.mailshell.net-62.8.15.100 64.201.201.201;04y87xm379nd58x44y9qxnhj5afhkypn6immb6t43465dzg4yi5cw6kcirc4cf9.yud3afo47kxsb9hyanb1z651u49bc5y9cnrbathng6eydes9jur9a9ddiq9k383.r-lbl8.mailshell.net-223.238.255.100,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0,LFtime:23,LUA_SUMMARY:none X-HE-Tag: corn94_300d44d270d7 X-Filterd-Recvd-Size: 2992 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf47.hostedemail.com (Postfix) with ESMTP for ; Tue, 8 Sep 2020 19:55:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.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=tbtp4TIXR0MyEZr4HxFB198TbMR5dMFiKzx9ZKjpNc8=; b=swD5u+hTiOK6fdvMsYcOOQ4ZZB UvebzxdD275SCeQ11NLy0Y0GpNkZUmHVvwnkxZ2vRAXWI343pC4B5ONgxGBfnIwrLAMK3f4yINW7z kgmOuvzlgBI5yfLIbu5nPVCSopQGNAhEhyQBphMyJ1i4dZrGfTckzPlLuArlcjaLtJBDAggqcux8D gp9TEY3fqHlxIqYgtBwkHqzsjumxh34uLknHHFEadzztHJqwqmIZ1CLlGEwDAg4I3B4FZm+shmTtb F9wu0tdXNk1bCKK54XI15jmkXqBRjtrRf0LxtO+ukBtvR4FcqrvQsarkAoFVz70vquUdtyCS6g7PM 1hJbAoDw==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kFjiP-0006kl-8l; Tue, 08 Sep 2020 19:55:41 +0000 From: "Matthew Wilcox (Oracle)" To: linux-mm@kvack.org, Andrew Morton Cc: "Matthew Wilcox (Oracle)" , "Kirill A . Shutemov" , Huang Ying Subject: [PATCH 00/11] Remove assumptions of THP size Date: Tue, 8 Sep 2020 20:55:27 +0100 Message-Id: <20200908195539.25896-1-willy@infradead.org> X-Mailer: git-send-email 2.21.3 MIME-Version: 1.0 X-Rspamd-Queue-Id: 72195180442C0 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam01 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: There are a number of places in the VM which assume that a THP is a PMD in size. That's true today, and remains true after this patch series, but this is a prerequisite for switching to arbitrary-sized THPs. thp_nr_pages() still returns either HPAGE_PMD_NR or 1, but will be changed later. Kirill A. Shutemov (2): mm/huge_memory: Fix total_mapcount assumption of page size mm/huge_memory: Fix split assumption of page size Matthew Wilcox (Oracle) (9): mm/filemap: Fix page cache removal for arbitrary sized THPs mm/memory: Remove page fault assumption of compound page size mm/page_owner: Change split_page_owner to take a count mm/huge_memory: Fix page_trans_huge_mapcount assumption of THP size mm/huge_memory: Fix can_split_huge_page assumption of THP size mm/rmap: Fix assumptions of THP size mm/truncate: Fix truncation for pages of arbitrary size mm/page-writeback: Support tail pages in wait_for_stable_page mm/vmscan: Allow arbitrary sized pages to be paged out include/linux/page_owner.h | 6 +++--- mm/filemap.c | 2 +- mm/huge_memory.c | 32 +++++++++++++++++--------------- mm/memory.c | 7 ++++--- mm/page-writeback.c | 1 + mm/page_owner.c | 4 ++-- mm/rmap.c | 10 +++++----- mm/truncate.c | 6 +++--- mm/vmscan.c | 3 +-- 9 files changed, 37 insertions(+), 34 deletions(-)