From patchwork Mon Mar 23 20:22:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Matthew Wilcox (Oracle)" X-Patchwork-Id: 11453865 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 AABE31668 for ; Mon, 23 Mar 2020 20:24:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8C2892073E for ; Mon, 23 Mar 2020 20:24:09 +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="QyArVQNn" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727607AbgCWUYE (ORCPT ); Mon, 23 Mar 2020 16:24:04 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:37046 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727364AbgCWUXK (ORCPT ); Mon, 23 Mar 2020 16:23:10 -0400 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=kZSWYbADCDtb2xc4p+R2B9mS5JBLfDUqpyTeSWepChg=; b=QyArVQNnAYA4CrP+it2v+xSMhc pe5MDSzjIGjT1P9OojwQPxZfJcZw3B82Y4DeEq2Bd5qqFb7Wpkp+Hrmol/if6vSmpcDa2WMbTzYal /E0lQpkjgKvAnS/qLTm+aPiuF7rAF0cwrSDTfsV9gXC5cc09Km9epDgFO96JVR2XfkvO88VwbgkYh mP+yKgky0ETpSuG4mUY9I3XAvhUPmGGPsSP9/xUcercB9beUFB5dpu5xjt7/4CxigB/ylf+5PKDUY QTdSpjm5DTNw+MStErILyNkTo6S8Oj+0raSuj1TwLctQZL1XWU5hmdYr4FK8oA+C7mgjQiJAoZnNr iBT6aGsQ==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jGTbB-0003Ud-FL; Mon, 23 Mar 2020 20:23:01 +0000 From: Matthew Wilcox To: Andrew Morton Cc: "Matthew Wilcox (Oracle)" , linux-fsdevel@vger.kernel.org, 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, Christoph Hellwig , Dave Chinner , John Hubbard , William Kucharski Subject: [PATCH v10 03/25] mm: Ignore return value of ->readpages Date: Mon, 23 Mar 2020 13:22:37 -0700 Message-Id: <20200323202259.13363-4-willy@infradead.org> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200323202259.13363-1-willy@infradead.org> References: <20200323202259.13363-1-willy@infradead.org> MIME-Version: 1.0 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@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 Reviewed-by: Dave Chinner Reviewed-by: John Hubbard Reviewed-by: William Kucharski --- mm/readahead.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/mm/readahead.c b/mm/readahead.c index 41a592886da7..61b15b6b9e72 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; } /*