Message ID | 20200610201345.13273-5-willy@infradead.org (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <SRS0=G8WG=7X=kvack.org=owner-linux-mm@kernel.org> 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 B1956138C for <patchwork-linux-mm@patchwork.kernel.org>; Wed, 10 Jun 2020 20:13:50 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 731102074B for <patchwork-linux-mm@patchwork.kernel.org>; Wed, 10 Jun 2020 20:13:50 +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="bAfUEC9x" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 731102074B 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 774538D0008; Wed, 10 Jun 2020 16:13:49 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 6FC818D0002; Wed, 10 Jun 2020 16:13:49 -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 5CDAE8D0007; Wed, 10 Jun 2020 16:13:49 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0179.hostedemail.com [216.40.44.179]) by kanga.kvack.org (Postfix) with ESMTP id 416BB8D0002 for <linux-mm@kvack.org>; Wed, 10 Jun 2020 16:13:49 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id F35998013423 for <linux-mm@kvack.org>; Wed, 10 Jun 2020 20:13:48 +0000 (UTC) X-FDA: 76914402936.21.boats52_441679826dce Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin21.hostedemail.com (Postfix) with ESMTP id BB425180442ED for <linux-mm@kvack.org>; Wed, 10 Jun 2020 20:13:48 +0000 (UTC) X-Spam-Summary: 2,0,0,19f22ce7104e8384,d41d8cd98f00b204,willy@infradead.org,,RULES_HIT:41:355:379:541:800:960:966:973:988:989:1260:1311:1314:1345:1359:1437:1515:1534:1541:1711:1730:1747:1777:1792:2196:2199:2393:2559:2562:2693:2901:3138:3139:3140:3141:3142:3352:3865:3866:3867:3870:3871:3874:4385:5007:6261:6653:7576:10004:11026:11232:11638:11658:11914:12296:12297:12555:12895:13069:13311:13357:13894:14096:14181:14384:14394:14721:21063:21080:21451:21627:21740:30054,0,RBL:198.137.202.133:@infradead.org:.lbl8.mailshell.net-62.8.0.100 64.201.201.201,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:49,LUA_SUMMARY:none X-HE-Tag: boats52_441679826dce X-Filterd-Recvd-Size: 2610 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf31.hostedemail.com (Postfix) with ESMTP for <linux-mm@kvack.org>; Wed, 10 Jun 2020 20:13:48 +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=VHXm1L+rObZHMg/ZFaxYy0B7In8iJsSQq6tf5Ix1Zow=; b=bAfUEC9x/4a1ubraNWUhB2jMUA wgZpuusnFmtFWjFCNm5HIyObzZT+pnK8D4l1cleAR398txg/NM5yrWcqn7zHxUMnHxTDA7PDfOuDw 03yZP0DPHgA/tCkMQFX1oAF20OYZAUGhALaBS/9OOR13Cts8cxPylP1T6u5SqJSlrBE0zk94MxbOU OPTGJX+bUeD05te31Hyqsxicqc+YRQZh/n2YdCvWQ4VP2RsdqLQTiC7O7SppH/0rXws9UsQNOFZdH e1rOsqC03rOmUAthexl+Pyv6ghP0UHyhKN8n4YZfsc664UKSCfQSP41zPU7PbpLV1dFj3VjAQ1mf1 RSJ6GprA==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jj76Z-0003T4-C0; Wed, 10 Jun 2020 20:13:47 +0000 From: Matthew Wilcox <willy@infradead.org> To: linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH v6 04/51] mm: Move PageDoubleMap bit Date: Wed, 10 Jun 2020 13:12:58 -0700 Message-Id: <20200610201345.13273-5-willy@infradead.org> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200610201345.13273-1-willy@infradead.org> References: <20200610201345.13273-1-willy@infradead.org> MIME-Version: 1.0 X-Rspamd-Queue-Id: BB425180442ED X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam03 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: <linux-mm.kvack.org> |
Series |
Large pages in the page cache
|
expand
|
On 10 Jun 2020, at 16:12, Matthew Wilcox wrote: > From: "Matthew Wilcox (Oracle)" <willy@infradead.org> > > PG_private_2 is defined as being PF_ANY (applicable to tail pages > as well as regular & head pages). That means that the first tail > page of a double-map page will appear to have Private2 set. Use the > Workingset bit instead which is defined as PF_HEAD so any attempt to > access the Workingset bit on a tail page will redirect to the head page's > Workingset bit. > > Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> > --- Make sense to me. Reviewed-by: Zi Yan <ziy@nvidia.com> — Best Regards, Yan Zi
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 222f6f7b2bb3..de6e0696f55c 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -164,7 +164,7 @@ enum pageflags { PG_slob_free = PG_private, /* Compound pages. Stored in first tail page's flags */ - PG_double_map = PG_private_2, + PG_double_map = PG_workingset, /* non-lru isolated movable page */ PG_isolated = PG_reclaim,