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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 00CFDC433E0 for ; Fri, 15 May 2020 13:40:26 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id AF21720657 for ; Fri, 15 May 2020 13:40:25 +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="d7HGG80t" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AF21720657 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 D485580058; Fri, 15 May 2020 09:40:20 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id CA82E80054; Fri, 15 May 2020 09:40:20 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B481780058; Fri, 15 May 2020 09:40:20 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0245.hostedemail.com [216.40.44.245]) by kanga.kvack.org (Postfix) with ESMTP id 99E1580054 for ; Fri, 15 May 2020 09:40:20 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 606F5181AEF00 for ; Fri, 15 May 2020 13:40:20 +0000 (UTC) X-FDA: 76819062600.21.toes50_2f12d2af5d0a X-HE-Tag: toes50_2f12d2af5d0a X-Filterd-Recvd-Size: 2323 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf11.hostedemail.com (Postfix) with ESMTP for ; Fri, 15 May 2020 13:40:20 +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=ZvCAGtrDAcAsja+QmzFW6sNRVbIwR7f84uLooOJs50k=; b=d7HGG80tN6Vh0xs+XPqofRQTkN i/9CY2TSUURCgYZW5bGV8/giGx3/aly85rxPadBm4xbWWLgM6wFvC2thkJustR6QhfFx5i7yn/Di0 FX2ui0TDSmccfhzmkim/jmUucgw/+u5R77FPvbdTc6FC/Yvg/32pdcNVXOix4Dfe3qeM8PsCNpboJ cCXRrLFl0gMKfoEtilibzrFQ7gzOW6CAtNDkgmGz0dj0nMebnWH/0eWoA7U3lhpsRB/0ahj3TxCTB mUhR8D8RpfMS4T8ClglEYnxh9D19HReKYb+vd9cdJobXp2orwiULHG5mooly4YHOqbx7ROrcp008+ nkjvNPQQ==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jZaD0-0005mT-Fs; Fri, 15 May 2020 13:17:02 +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 v4 29/36] mm: Support retrieving tail pages from the page cache Date: Fri, 15 May 2020 06:16:49 -0700 Message-Id: <20200515131656.12890-30-willy@infradead.org> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200515131656.12890-1-willy@infradead.org> References: <20200515131656.12890-1-willy@infradead.org> MIME-Version: 1.0 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)" page->index is not meaningful for tail pages; we have to use page_to_index() in this assertion. Signed-off-by: Matthew Wilcox (Oracle) --- mm/filemap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/filemap.c b/mm/filemap.c index 0ec7f25a07b2..56eb086acef8 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1655,7 +1655,7 @@ struct page *pagecache_get_page(struct address_spac= e *mapping, pgoff_t index, put_page(page); goto repeat; } - VM_BUG_ON_PAGE(page->index !=3D index, page); + VM_BUG_ON_PAGE(page_to_index(page) !=3D index, page); } =20 if (fgp_flags & FGP_ACCESSED) --=20 2.26.2