Received: by 2002:a25:868d:0:0:0:0:0 with SMTP id z13csp499894ybk; Fri, 15 May 2020 06:19:58 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwzpdDIbcA7VFsFZvh0yY/vnLXLO2E5hKShfSlSNhTRUjKTbOJr+5Vn6JNa8iFEF9QKj/iz X-Received: by 2002:aa7:cd5a:: with SMTP id v26mr2956850edw.320.1589548798471; Fri, 15 May 2020 06:19:58 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1589548798; cv=none; d=google.com; s=arc-20160816; b=LQJymu4rQUWylGCoU7YprxRur9PqFFLJJu6l1GKgEi13VJSdYfqjTO/9rgf3OArG38 E8i4CtSbocnoLTweG5N1tO/C/zjjYovG1e5NcKz+sbp5P68D23T2VoIk0m8Zzppw3iHZ IVbhgCvCefToGx//0kq9fOY78PGPFQLIswkQNmr0Ma1Zi0tV1BMEX2sxDxNxwGRZ/qWC 9KZhBCYNhHqbsC5eD8MXcHPKWeyDQp5QCoRzx9sXGZfldQvE87KAm6pvnI4BNbt+mroQ reeYG/dHmsKpbCWfs8LbtQ4LleCmSTVzW/XmNnJX8skWubYRVwXxoM6j6WwpwnjI7sQw fYBA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=ZvCAGtrDAcAsja+QmzFW6sNRVbIwR7f84uLooOJs50k=; b=BqvLhTKCxvU0AhiwFTBH3TyaQA8mLts2OjkydlZ7Cyd57HxCDS73BKL8aGgHgGUVxs SvJ1w9SSuRZzd+cHjgv6w1WY3v73htmmHERUU2180+YrR5WL6UWkdFTANa88xoMTsXGS vrB1kohmCvYWO8T7k3l1lm7xIYuKuzwSsR+ZmD/Rr4Z1X0FqW9dEQAozkYsfWg6dCIY9 GUuiDpreVk2Kzp/zKPsDo6YIDOEFPUUzz5XhWeyiwY181swzYGECSLaEEe6iuEjjizaB Lfsq71g4Jb5j9TuiVpwjjtrCxvSNMxMWiil1n2zKT/bIh4flrhITYIqWAzY23vf9Mjea eVXA== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=d7HGG80t; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id m5si1079771eds.245.2020.05.15.06.19.33; Fri, 15 May 2020 06:19:58 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=d7HGG80t; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726162AbgEONRn (ORCPT + 99 others); Fri, 15 May 2020 09:17:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51272 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726601AbgEONRD (ORCPT ); Fri, 15 May 2020 09:17:03 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B985DC05BD1C; Fri, 15 May 2020 06:17:02 -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=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: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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