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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9B33BC433F5 for ; Fri, 21 Jan 2022 08:14:26 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 353536B0080; Fri, 21 Jan 2022 03:14:26 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 302BC6B0081; Fri, 21 Jan 2022 03:14:26 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1F1DE6B0083; Fri, 21 Jan 2022 03:14:26 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id 11CFE6B0080 for ; Fri, 21 Jan 2022 03:14:26 -0500 (EST) Received: from smtpin24.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id C66221818CBFE for ; Fri, 21 Jan 2022 08:14:25 +0000 (UTC) X-FDA: 79053582090.24.3FA1E01 Received: from mail-pg1-f182.google.com (mail-pg1-f182.google.com [209.85.215.182]) by imf03.hostedemail.com (Postfix) with ESMTP id 6F23120006 for ; Fri, 21 Jan 2022 08:14:25 +0000 (UTC) Received: by mail-pg1-f182.google.com with SMTP id h23so7548258pgk.11 for ; Fri, 21 Jan 2022 00:14:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=38VL4JgcBpGSLu1kgAnwix0Q4byRwiwO3nHQUNRDRD4=; b=TeH+wuy/sIByEsJTcwZrBFYB5QaT0ECx/o59mjNK7uXIQVrp2mmuNPss+jPXLoW7Xk 8n/yD8ycbHPAk6b6Ch1Uv1iMrCkP7vf6JSBDZJ6ZK/CDp1X+2WFaEma7BFGBTW7eJMw2 MCjFgSBYMfkdydmiLILChev6ara/m07z6wGgLtTwyJa2JMVwvYAIhBo8OHnBZSeUhO4P k0pwQfXVUPGnxKjnZd4EZjJQfWHksweHXG4AZgg1sRffRCvcybAv5DpABW6Ooaw57mzQ ztYC2w4W+iHQU9l2cs0FX14aDo3TzA2U/IIihBhiYBTwUfp2+beboggHts3x1khxFXTu QdFg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=38VL4JgcBpGSLu1kgAnwix0Q4byRwiwO3nHQUNRDRD4=; b=Kybg98XW3IegFPLO0eODpMe84Gm18CmBpJA0uBZqLJX5af2sUKSOJQZVIuAJvBmL8Q TNVDMyV1z+pSozBuij2hkJZ7dbY0swibIVsWW1n9PPl1Zny3FXO6CMEic5+nfDFGuEUx v+cRh6zL+sdSNA+AhcKgZYOZvZZM1v//E93DOfrX2mRePqDy120mp13qVjaMV5yFmK6S gCsfBPloQ+pTUpSGv4Vazj2mCwoPgsk4Ui93E1CmUgiQ6rj/J+gK68BRWlznHT95XwYu GRrSlJcs4SZ+ZEpc/4C2mq/LHxPyG/8yoPRPsSGKTneirSarAcgIeU9KhQGYKdi1J87Q ODGQ== X-Gm-Message-State: AOAM533t7Vs9mBMdie990Z7zV6dTDCiEf9tTLrK4+X2B4p6bdKFS9qor BlP3/1/rtAkqFWpYNtuaBlqfaA== X-Google-Smtp-Source: ABdhPJy3K7BYJwww5r2mm9TNQZ5iQeFX7+vTN2yRiawQCHbeqre5JvBHtpZXCBQ38l+v2inwkVS7fg== X-Received: by 2002:a63:710f:: with SMTP id m15mr2193712pgc.40.1642752864519; Fri, 21 Jan 2022 00:14:24 -0800 (PST) Received: from FVFYT0MHHV2J.tiktokcdn.com ([139.177.225.230]) by smtp.gmail.com with ESMTPSA id q9sm6191010pfk.137.2022.01.21.00.14.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Jan 2022 00:14:24 -0800 (PST) From: Muchun Song To: akpm@linux-foundation.org, zi.yan@cs.rutgers.edu, kirill.shutemov@linux.intel.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Muchun Song Subject: [PATCH 2/2] mm: fix missing cache flush for all tail pages of THP Date: Fri, 21 Jan 2022 16:13:45 +0800 Message-Id: <20220121081345.80320-2-songmuchun@bytedance.com> X-Mailer: git-send-email 2.32.0 (Apple Git-132) In-Reply-To: <20220121081345.80320-1-songmuchun@bytedance.com> References: <20220121081345.80320-1-songmuchun@bytedance.com> MIME-Version: 1.0 X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 6F23120006 X-Stat-Signature: 7sq9tdexsa73cixc7t9wscjcqddeenmp Authentication-Results: imf03.hostedemail.com; dkim=pass header.d=bytedance-com.20210112.gappssmtp.com header.s=20210112 header.b="TeH+wuy/"; spf=pass (imf03.hostedemail.com: domain of songmuchun@bytedance.com designates 209.85.215.182 as permitted sender) smtp.mailfrom=songmuchun@bytedance.com; dmarc=pass (policy=none) header.from=bytedance.com X-HE-Tag: 1642752865-82151 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: The D-cache maintenance inside move_to_new_page() only consider one page, there is still D-cache maintenance issue for tail pages of THP. Fix this by using flush_dcache_folio(). Fixes: 616b8371539a ("mm: thp: enable thp migration in generic path") Signed-off-by: Muchun Song --- mm/migrate.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/mm/migrate.c b/mm/migrate.c index c9296d63878d..daf2b3508670 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -934,8 +934,7 @@ static int move_to_new_page(struct page *newpage, str= uct page *page, page->mapping =3D NULL; =20 if (likely(!is_zone_device_page(newpage))) - flush_dcache_page(newpage); - + flush_dcache_folio(page_folio(newpage)); } out: return rc; --=20 2.11.0