From patchwork Wed Jan 15 02:38:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 11333127 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 ED40192A for ; Wed, 15 Jan 2020 02:38:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C24EA222C3 for ; Wed, 15 Jan 2020 02:38:47 +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="WIvd1rP7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729008AbgAOCir (ORCPT ); Tue, 14 Jan 2020 21:38:47 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:38794 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729010AbgAOCiq (ORCPT ); Tue, 14 Jan 2020 21:38:46 -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:Resent-Date:Resent-From :Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=LKEoyUCzBuRkKfb9R2uO7LHx4Md5GqeUkIse+rddq2w=; b=WIvd1rP7j3KB7D+HR17/TqWo9g QafiWGgWp5sBQZZrQz1lGKU/YSs/j7bH76Zh0x3ygF7owG1puQsYvAiWnQ9NEwN5mzBs2ujdy/AHF AMBuu735oMDmfLSqsQD2aJvJh3DgZk55Cl5/9Jab8yZM9ga6HQldoa09heYtDRcmOlNbDzk5HudB9 BnR1YnApDlPvpWEUyfck1Yt8pZbWvK4uA6STAE6DUp0CS5WVCGJAyiw7+hqLGLuQRvgOpVXQ7oWRh TIn6OtESTcsCZdf/gvuRT1tSO/QdRzEHjnskn6K7d2NdkZ420MAhe3gMxMk1Cu1UnRUP8GNz1yZsf TQlUOjlA==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1irYZy-0008AP-0f; Wed, 15 Jan 2020 02:38:46 +0000 From: Matthew Wilcox To: linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Cc: "Matthew Wilcox (Oracle)" , Jeff Layton , Christoph Hellwig , Chris Mason Subject: [PATCH v2 2/9] readahead: Ignore return value of ->readpages Date: Tue, 14 Jan 2020 18:38:36 -0800 Message-Id: <20200115023843.31325-3-willy@infradead.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200115023843.31325-1-willy@infradead.org> References: <20200115023843.31325-1-willy@infradead.org> MIME-Version: 1.0 Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@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) --- 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; } /*