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=-6.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham 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 E5591C433DF for ; Fri, 29 May 2020 03:37:46 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id A457320721 for ; Fri, 29 May 2020 03:37:46 +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="fN69t9ki" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A457320721 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 CB661800BD; Thu, 28 May 2020 23:37:41 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id C3F9180010; Thu, 28 May 2020 23:37:41 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B55A6800BD; Thu, 28 May 2020 23:37:41 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0162.hostedemail.com [216.40.44.162]) by kanga.kvack.org (Postfix) with ESMTP id 9A9EB80010 for ; Thu, 28 May 2020 23:37:41 -0400 (EDT) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 621348245571 for ; Fri, 29 May 2020 03:37:41 +0000 (UTC) X-FDA: 76868347122.11.flag37_4319980228c53 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin11.hostedemail.com (Postfix) with ESMTP id 46D5B180F8B80 for ; Fri, 29 May 2020 03:37:41 +0000 (UTC) X-HE-Tag: flag37_4319980228c53 X-Filterd-Recvd-Size: 2444 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf49.hostedemail.com (Postfix) with ESMTP for ; Fri, 29 May 2020 03:37:40 +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=9r9vORbOytoazW3UXAiDTCw79E+Sm2pnv9qrsCelaEs=; b=fN69t9ki3F7CoL9P+jkh/n6yaN MtA978kQdBvtN05wJgmMMV/ZrxTLf1HJGIkTvvK2G8cxfjMfIn+8EtYRvjIsuT72uI3G7LT9JxGnC Fnj2JhU+qSEKTPoBo6k4nXacBFB8eIwpf1KTi62ChfurQtwdRGqSYCl50mvLA4MDUPeqVcsKqI4fK KD8cSmjG7BjwD8i49MRSjwPsWRe4Fxj3uKDebTENm2faLh8CgwelRu4H5SR84PcqTNpHV9xVIAhlV +5Ia7lV5YdERJufYRpwGdzAy9sPKuoK1AR3GynsSFn27sQXcKgQP8YOYHr8XNa9EA8hExf7HNeWBK h49iJvow==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jeVE3-0008Sq-LC; Fri, 29 May 2020 02:58:27 +0000 From: Matthew Wilcox To: linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 28/39] mm: Avoid splitting large pages Date: Thu, 28 May 2020 19:58:13 -0700 Message-Id: <20200529025824.32296-29-willy@infradead.org> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200529025824.32296-1-willy@infradead.org> References: <20200529025824.32296-1-willy@infradead.org> MIME-Version: 1.0 X-Rspamd-Queue-Id: 46D5B180F8B80 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam02 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)" If the filesystem supports large pages, then do not split them before removing them from the page cache; remove them as a unit. --- mm/vmscan.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index b06868fc4926..51e6c135575d 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1271,9 +1271,10 @@ static unsigned long shrink_page_list(struct list_= head *page_list, /* Adding to swap updated mapping */ mapping =3D page_mapping(page); } - } else if (unlikely(PageTransHuge(page))) { + } else if (PageTransHuge(page)) { /* Split file THP */ - if (split_huge_page_to_list(page, page_list)) + if (!mapping_large_pages(mapping) && + split_huge_page_to_list(page, page_list)) goto keep_locked; } =20 --=20 2.26.2