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 7EAB8C433EF for ; Sat, 20 Nov 2021 17:45:07 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id D85026B0071; Sat, 20 Nov 2021 12:44:51 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id D350C6B0072; Sat, 20 Nov 2021 12:44:51 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C22EA6B0073; Sat, 20 Nov 2021 12:44:51 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0225.hostedemail.com [216.40.44.225]) by kanga.kvack.org (Postfix) with ESMTP id AF8656B0071 for ; Sat, 20 Nov 2021 12:44:51 -0500 (EST) Received: from smtpin23.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 71F5C8A3C7 for ; Sat, 20 Nov 2021 17:44:41 +0000 (UTC) X-FDA: 78830033562.23.0745FF1 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf09.hostedemail.com (Postfix) with ESMTP id DC928300013F for ; Sat, 20 Nov 2021 17:44:37 +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=6WX9PnhCtyF48ufqystHTxLge9mMWhNpyYkkiY6GBPU=; b=l/VFslUT96IaYxp+ClN669hmLm 1rPeuH7PJ5XAvfICpLSlUcSpF2rTEv9UFz9ayzujhNvI3m9PQt8wxOkTt/rXc+jJ9e9/6/uG/GSzb qX6ekZ44C1df09eEO02N5xULC0M2gd/gZBVhUA6IogPxAXAB8dHDLwy0onbBUVzdB4+2svO0Rl3tP KmrhBxyzXqFy1taQ/i7Iq1x8v5I0FsO+xeAzs7c+P1hznfTMkBDsnviiAnb5L0bmCCviokK1I4Qg5 jeeH8SiwJY3DYDQDE0sVuUWDIbyeiYepvu2ZEUec1hcFH9im3lbg+Db+GS8L6uouCick8bj9/YHrb B2txL2fg==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1moUPf-00Atae-Dk; Sat, 20 Nov 2021 17:44:31 +0000 From: "Matthew Wilcox (Oracle)" To: Yang Shi , Naoya Horiguchi , "Kirill A . Shutemov" , Andrew Morton , linux-mm@kvack.org, Hugh Dickins Cc: "Matthew Wilcox (Oracle)" Subject: [PATCH] filemap: Remove PageHWPoison check from next_uptodate_page() Date: Sat, 20 Nov 2021 17:44:29 +0000 Message-Id: <20211120174429.2596303-1-willy@infradead.org> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 X-Rspamd-Queue-Id: DC928300013F X-Stat-Signature: 3inifxykyj5bqekdkk8rkyysa1htamux Authentication-Results: imf09.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b="l/VFslUT"; dmarc=none; spf=none (imf09.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org X-Rspamd-Server: rspam02 X-HE-Tag: 1637430277-798905 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: Pages are individually marked as suffering from hardware poisoning. Checking that the head page is not hardware poisoned doesn't make sense; we might be after a subpage. We check each page individually before we use it, so this was an optimisation gone wrong. Signed-off-by: Matthew Wilcox (Oracle) --- mm/filemap.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/mm/filemap.c b/mm/filemap.c index 0b6f996108b4..65973204112d 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -3239,8 +3239,6 @@ static struct page *next_uptodate_page(struct page = *page, goto skip; if (!PageUptodate(page) || PageReadahead(page)) goto skip; - if (PageHWPoison(page)) - goto skip; if (!trylock_page(page)) goto skip; if (page->mapping !=3D mapping) --=20 2.33.0