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=-9.5 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 7C85DC433DF for ; Fri, 29 May 2020 03:00:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4E78D20888 for ; Fri, 29 May 2020 03:00:08 +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="G6/o1Skz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391704AbgE2DAD (ORCPT ); Thu, 28 May 2020 23:00:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2407322AbgE2C6i (ORCPT ); Thu, 28 May 2020 22:58:38 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 17FCEC008637; Thu, 28 May 2020 19:58:38 -0700 (PDT) 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=G6/o1SkzUI+vKbdXJspiSmkq4i 0qxhVfZeZ5jLXewappHyXeyvTFFJFmvXH6PZJG9D62B6XPJo1HV4pDCbFrIz7FQNrtxxFm7hcv9Bh WZ7TXliWfnjKo+RYXuvGslzANGWAjhyvNgpEwIQ9JxfDdllFyeEpz0Z7zRSyzHOg1FCuGIrxMEsT1 fjPpbcMzIGUW6igMRqSEfs6LPepYHTM9zLHBkzS7pFw6g3yHB5qNu/QSuCNwAsPkCAzdEpcfiYAX6 O4i8gsB1pme/Kl7o5WzwD8PNWimcRlEwwfZ7J/PICohml87RYQ+MsK1hBqeu733e++rq8Q2hjTS2I cfamU/DQ==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jeVE3-0008TI-QK; 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 32/39] mm: Support retrieving tail pages from the page cache Date: Thu, 28 May 2020 19:58:17 -0700 Message-Id: <20200529025824.32296-33-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 Content-Transfer-Encoding: 8bit Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org 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_space *mapping, pgoff_t index, put_page(page); goto repeat; } - VM_BUG_ON_PAGE(page->index != index, page); + VM_BUG_ON_PAGE(page_to_index(page) != index, page); } if (fgp_flags & FGP_ACCESSED) -- 2.26.2