From patchwork Tue Apr 14 15:02:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 11488227 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 08B4192C for ; Tue, 14 Apr 2020 15:18:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E4D032076B for ; Tue, 14 Apr 2020 15:18:09 +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="JF06wYtS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407336AbgDNPSC (ORCPT ); Tue, 14 Apr 2020 11:18:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43548 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2405602AbgDNPCn (ORCPT ); Tue, 14 Apr 2020 11:02:43 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 15786C03C1A8; Tue, 14 Apr 2020 08:02:40 -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=a3v6yDLu6YVVgdwzNLLzwkeJ8vT0YawbuKhMcViKfm0=; b=JF06wYtSwL1/xSUUuID+BwdjlM 1NYosnZkLH42PLmhP3iMKOqAlZszbhrqz4D+kq7FA2pgvQhft14Lm+6SRBGUSSv1a8P5HTEtG+7mV xBnPeuqODdxGkFtC31NnJHGdcW2kl5gAuW5wuW6Zy5B4d/dCDTGZMWeKU50cYs0y6JG3WkZykQJhO g1SQUuso+kDJd1ICcMsmBWTDTrfyPgb9Q924l433/98srGm/NmJYOv35sk3Oeeo9qSyvh/Ib97jci IZdGfINaRsh/KW/SHDZpDVM2DvdFp5M5cIQlkjOqLiQXR4qs0QwF0saDh4eOiv7TFcJY6KvRbSjc8 GYuwfeNg==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jON59-0006OS-Vg; Tue, 14 Apr 2020 15:02:35 +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, John Hubbard , Dave Chinner , William Kucharski Subject: [PATCH v11 08/25] mm: rename readahead loop variable to 'i' Date: Tue, 14 Apr 2020 08:02:16 -0700 Message-Id: <20200414150233.24495-9-willy@infradead.org> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200414150233.24495-1-willy@infradead.org> References: <20200414150233.24495-1-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)" 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 Reviewed-by: William Kucharski Reviewed-by: Johannes Thumshirn --- mm/readahead.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/mm/readahead.c b/mm/readahead.c index 8a65d6bd97e0..7ce320854bad 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -163,13 +163,13 @@ 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 = { .mapping = mapping, .file = filp, }; + unsigned long i; if (isize == 0) return; @@ -179,8 +179,8 @@ 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; @@ -201,7 +201,7 @@ 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++; }