From patchwork Tue Feb 11 01:03:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 11374587 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 619F8109A for ; Tue, 11 Feb 2020 01:05:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 42C772080C for ; Tue, 11 Feb 2020 01:05:07 +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="Isw5m/tT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727901AbgBKBDz (ORCPT ); Mon, 10 Feb 2020 20:03:55 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:54736 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727695AbgBKBDy (ORCPT ); Mon, 10 Feb 2020 20:03:54 -0500 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=MOOCl0kElclaL12Bo2vdDIW4gCL68Y7X1xBVMIbuM80=; b=Isw5m/tToyqF5hw2BHaQc66txg PLpadc/3h5L6eAeruvyIBlnGL1PP7HBjXzQGHBrgDRT079Q3r/xXZRoyDxjg9eYDqeL9RoWbECgEm IViGYNLoYxC8uf/tZ96aGfepdrMqdPmTsRd0IMjX/2KZemd3naXkvF6oAY3AtJ8V4hqLrYX9oKGei WdFEds4K+gW630ResAlErqadDoitOedK0m1LuInhQW/SaVHIon6X3nGWBFlKNaEWcziZjkDcH9c4A MYXX/W4UN0+2jmsJlL97B3nSSMEXmyOgLqdqFqdm+QN3vnSEn0/Zyg8JczgtVc92uJp3BUxRQVhaa 4qj969Yw==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1j1Jxu-0001nl-BQ; Tue, 11 Feb 2020 01:03:50 +0000 From: Matthew Wilcox To: linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, ocfs2-devel@oss.oracle.com, linux-xfs@vger.kernel.org Subject: [PATCH v5 02/13] mm: Ignore return value of ->readpages Date: Mon, 10 Feb 2020 17:03:37 -0800 Message-Id: <20200211010348.6872-3-willy@infradead.org> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200211010348.6872-1-willy@infradead.org> References: <20200211010348.6872-1-willy@infradead.org> MIME-Version: 1.0 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org From: "Matthew Wilcox (Oracle)" We used to assign the return value to a variable, which we then ignored. Remove the pretence of caring. Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Christoph Hellwig --- mm/readahead.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/mm/readahead.c b/mm/readahead.c index 6bf73ef33b7e..fc77d13af556 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -113,17 +113,16 @@ int read_cache_pages(struct address_space *mapping, struct list_head *pages, EXPORT_SYMBOL(read_cache_pages); -static int read_pages(struct address_space *mapping, struct file *filp, +static void read_pages(struct address_space *mapping, struct file *filp, struct list_head *pages, unsigned int nr_pages, gfp_t gfp) { struct blk_plug plug; unsigned page_idx; - int ret; blk_start_plug(&plug); if (mapping->a_ops->readpages) { - ret = mapping->a_ops->readpages(filp, mapping, pages, nr_pages); + mapping->a_ops->readpages(filp, mapping, pages, nr_pages); /* Clean up the remaining pages */ put_pages_list(pages); goto out; @@ -136,12 +135,9 @@ static int read_pages(struct address_space *mapping, struct file *filp, mapping->a_ops->readpage(filp, page); put_page(page); } - ret = 0; out: blk_finish_plug(&plug); - - return ret; } /*