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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 EC4C2C2BA19 for ; Tue, 14 Apr 2020 15:02:46 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id AB37420768 for ; Tue, 14 Apr 2020 15:02:46 +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="rxsNXTI6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AB37420768 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 631418E000C; Tue, 14 Apr 2020 11:02:40 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 542608E0007; Tue, 14 Apr 2020 11:02:40 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1C2528E000D; Tue, 14 Apr 2020 11:02:39 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0007.hostedemail.com [216.40.44.7]) by kanga.kvack.org (Postfix) with ESMTP id C90698E0008 for ; Tue, 14 Apr 2020 11:02:39 -0400 (EDT) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 905AF180AD811 for ; Tue, 14 Apr 2020 15:02:39 +0000 (UTC) X-FDA: 76706777238.01.quiet06_5165646ef891d X-HE-Tag: quiet06_5165646ef891d X-Filterd-Recvd-Size: 3371 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf38.hostedemail.com (Postfix) with ESMTP for ; Tue, 14 Apr 2020 15:02:39 +0000 (UTC) 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=yWCBnvZVE3mmN89bJgz6VBayzBfFVIn+l+u0xcbyIA0=; b=rxsNXTI6N2R0/LpKQ7BNJg/gk2 0yITPvDQDE2V8Dr6ZRvEscnLB9UyPimRkq7PGGSDZFqBRRMVYBwmYQ3r+ycynfXwu/lgRI0dGhBNs ymS2j79bQT9lAHH0g6CTRq1NfdxAeCeciwVyd+AuVXoR3NFXfIsLiQ5A3uwDHFFTO7n9ie4HqhDoi Ijz4vD2rdHIKI4P2DRmChWKXUwX9cc7srwuVYhhuDfRZFAtxtSPdLfrSyFhOdwKx0YdBjzmW+tW/6 +6ZfJDgCHOkIuQww7hF+NBUYzMi2pL2NIKfESk9JbsvFstHJagzoq1clFanhIz8jF/5g4eC66mzoy uDt3EiFg==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jON5A-0006OX-0c; Tue, 14 Apr 2020 15:02:36 +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 , Christoph Hellwig , William Kucharski Subject: [PATCH v11 09/25] mm: Remove 'page_offset' from readahead loop Date: Tue, 14 Apr 2020 08:02:17 -0700 Message-Id: <20200414150233.24495-10-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 Content-Transfer-Encoding: quoted-printable 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)" Replace the page_offset variable with 'index + i'. Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: John Hubbard Reviewed-by: Christoph Hellwig Reviewed-by: William Kucharski --- mm/readahead.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/mm/readahead.c b/mm/readahead.c index 7ce320854bad..ddc63d3b07b8 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -180,12 +180,10 @@ void __do_page_cache_readahead(struct address_space= *mapping, * Preallocate as many pages as we will need. */ for (i =3D 0; i < nr_to_read; i++) { - pgoff_t page_offset =3D index + i; - - if (page_offset > end_index) + if (index + i > end_index) break; =20 - page =3D xa_load(&mapping->i_pages, page_offset); + page =3D xa_load(&mapping->i_pages, index + i); if (page && !xa_is_value(page)) { /* * Page already present? Kick off the current batch of @@ -199,7 +197,7 @@ void __do_page_cache_readahead(struct address_space *= mapping, page =3D __page_cache_alloc(gfp_mask); if (!page) break; - page->index =3D page_offset; + page->index =3D index + i; list_add(&page->lru, &page_pool); if (i =3D=3D nr_to_read - lookahead_size) SetPageReadahead(page); --=20 2.25.1