From patchwork Wed Feb 19 21:00:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 11392501 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 A5F49109A for ; Wed, 19 Feb 2020 21:01:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 86944207FD for ; Wed, 19 Feb 2020 21:01:40 +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="XHx3/nz7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728064AbgBSVBN (ORCPT ); Wed, 19 Feb 2020 16:01:13 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:36086 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727984AbgBSVBL (ORCPT ); Wed, 19 Feb 2020 16:01:11 -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=5C4JK8zE1Pp00Cum/3ZRIGcaAr7KiKxwr8qbHzzStqE=; b=XHx3/nz7M4KGJeYMjVh5+2kl3y vAU/Yp8bBwlAjCEzM1kKgagYjqMowAxWy16/KX3wWDba7Z4mH7P+kKYv6Vvx7ZL9X8S6pzJAXqge2 Hi/vA2PlELq4lKbnQJj4gucjv6JU+KNaCS2iK0ay1TXfLs6v0ZEnMHfNS3rCgoZ+NuCqxG0F6yARR 7qKi019VALOU+T+5tip6Dfo/bQvcnqMMdgiV7IrBiRQSjYM6lIhdDm10A29M290ggEeav7ulfzwKA CIU1nNjkhSMUvBPOoZ6VVGkQPF3XTO8xonKYsMItkEcrM1p0W+kMXoZw/eGGO9niPYihFZqg29xiF vTEzBmkg==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1j4WSu-0008Te-Vo; Wed, 19 Feb 2020 21:01:04 +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, John Hubbard , Dave Chinner Subject: [PATCH v7 07/24] mm: rename readahead loop variable to 'i' Date: Wed, 19 Feb 2020 13:00:46 -0800 Message-Id: <20200219210103.32400-8-willy@infradead.org> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200219210103.32400-1-willy@infradead.org> References: <20200219210103.32400-1-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)" Change the type of page_idx to unsigned long, and rename it -- it's just a loop counter, not a page index. Suggested-by: John Hubbard Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Dave Chinner --- mm/readahead.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/mm/readahead.c b/mm/readahead.c index 096cf9020648..8a25fc7e2bf2 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -163,7 +163,6 @@ void __do_page_cache_readahead(struct address_space *mapping, struct page *page; unsigned long end_index; /* The last page we want to read */ LIST_HEAD(page_pool); - int page_idx; loff_t isize = i_size_read(inode); gfp_t gfp_mask = readahead_gfp_mask(mapping); struct readahead_control rac = { @@ -171,6 +170,7 @@ void __do_page_cache_readahead(struct address_space *mapping, .file = filp, ._nr_pages = 0, }; + unsigned long i; if (isize == 0) return; @@ -180,8 +180,8 @@ void __do_page_cache_readahead(struct address_space *mapping, /* * Preallocate as many pages as we will need. */ - for (page_idx = 0; page_idx < nr_to_read; page_idx++) { - pgoff_t page_offset = index + page_idx; + for (i = 0; i < nr_to_read; i++) { + pgoff_t page_offset = index + i; if (page_offset > end_index) break; @@ -202,7 +202,7 @@ void __do_page_cache_readahead(struct address_space *mapping, break; page->index = page_offset; list_add(&page->lru, &page_pool); - if (page_idx == nr_to_read - lookahead_size) + if (i == nr_to_read - lookahead_size) SetPageReadahead(page); rac._nr_pages++; }