From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AE745C433E0 for ; Tue, 2 Jun 2020 04:46:36 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 67DC020872 for ; Tue, 2 Jun 2020 04:46:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="Z7edkQDg" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 67DC020872 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 0F67580016; Tue, 2 Jun 2020 00:46:36 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 0A6E18E0006; Tue, 2 Jun 2020 00:46:36 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id F251580016; Tue, 2 Jun 2020 00:46:35 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0023.hostedemail.com [216.40.44.23]) by kanga.kvack.org (Postfix) with ESMTP id D88C68E0006 for ; Tue, 2 Jun 2020 00:46:35 -0400 (EDT) Received: from smtpin03.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 980162471 for ; Tue, 2 Jun 2020 04:46:35 +0000 (UTC) X-FDA: 76883035950.03.bread55_1c63919e56961 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin03.hostedemail.com (Postfix) with ESMTP id 6394828A4E9 for ; Tue, 2 Jun 2020 04:46:35 +0000 (UTC) X-HE-Tag: bread55_1c63919e56961 X-Filterd-Recvd-Size: 4026 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf22.hostedemail.com (Postfix) with ESMTP for ; Tue, 2 Jun 2020 04:46:34 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3693420870; Tue, 2 Jun 2020 04:46:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591073194; bh=nrJOIMNt1WcTAwe/jVAU01kZ95ko0G5zQMSTGctNxvg=; h=Date:From:To:Subject:In-Reply-To:From; b=Z7edkQDgaJ0s9l1yL9qCFgMy/+TlegYhS9zLNOHZug8gXXtCVV+wMYsc3mxdBaZ23 VPKWL7rzgxKLmN9jOn6K8lBDKtJZez9AaxLuGaPG+JJqse9r9A5dvkgP9YP2YvoQ0T 29FgHBGSNeB4b6PXsy9DzUZiH/evUWu6odq7tq/w= Date: Mon, 01 Jun 2020 21:46:32 -0700 From: Andrew Morton To: akpm@linux-foundation.org, darrick.wong@oracle.com, dchinner@redhat.com, ebiggers@google.com, gaoxiang25@huawei.com, hch@lst.de, jaegeuk@kernel.org, jhubbard@nvidia.com, johannes.thumshirn@wdc.com, joseph.qi@linux.alibaba.com, junxiao.bi@oracle.com, linux-mm@kvack.org, mhocko@suse.com, mm-commits@vger.kernel.org, mszeredi@redhat.com, torvalds@linux-foundation.org, william.kucharski@oracle.com, willy@infradead.org, xiyou.wangcong@gmail.com, yuchao0@huawei.com, ziy@nvidia.com Subject: [patch 021/128] mm: rename readahead loop variable to 'i' Message-ID: <20200602044632.8YXBT-fpk%akpm@linux-foundation.org> In-Reply-To: <20200601214457.919c35648e96a2b46b573fe1@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Queue-Id: 6394828A4E9 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: "Matthew Wilcox (Oracle)" Subject: mm: rename readahead loop variable to 'i' Change the type of page_idx to unsigned long, and rename it -- it's just a loop counter, not a page index. Link: http://lkml.kernel.org/r/20200414150233.24495-9-willy@infradead.org Suggested-by: John Hubbard Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Dave Chinner Reviewed-by: William Kucharski Reviewed-by: Johannes Thumshirn Cc: Chao Yu Cc: Christoph Hellwig Cc: Cong Wang Cc: Darrick J. Wong Cc: Eric Biggers Cc: Gao Xiang Cc: Jaegeuk Kim Cc: Joseph Qi Cc: Junxiao Bi Cc: Michal Hocko Cc: Zi Yan Cc: Miklos Szeredi Signed-off-by: Andrew Morton --- mm/readahead.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- a/mm/readahead.c~mm-rename-readahead-loop-variable-to-i +++ a/mm/readahead.c @@ -163,13 +163,13 @@ void __do_page_cache_readahead(struct ad 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 ad /* * 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 ad 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++; } _