Received: by 2002:ad5:474a:0:0:0:0:0 with SMTP id i10csp578121imu; Fri, 11 Jan 2019 05:37:21 -0800 (PST) X-Google-Smtp-Source: ALg8bN6YEv7If4P0+UgYC9olRmJHnbNe5vr+vFOknY3kB9bMHhy61vDmswAjSmbe08zCOK6JVma1 X-Received: by 2002:a17:902:14e:: with SMTP id 72mr14812051plb.287.1547213841376; Fri, 11 Jan 2019 05:37:21 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1547213841; cv=none; d=google.com; s=arc-20160816; b=pW9mdiz6yOJsuxgzPSb39f/aM/+KA/NTgoRoxUs3UfIGFoeX5/MgJlIG1LzZldk3tS hxSCPfkUvmBR4vpn4U31VhpxpgbUulxS3XAzrP2d38kKJ4f52992/e2aauzNdiXhXM7Q yitIq1SiTjsaQDOkhsv5YmP1ktRx1bhBjlhllnKqs+MYuZqQ3ZmrhtMEiHx8DsyAcU1m yD2hFOMaKUS8Baz7PIyMxFrJIi5z1j8HlIugO2PkTLqWeqt3ZJ9To3Xq7Vgr0euhm15i SNEEubYXUOQhQv09jrSKDALlTWiWK/Lz2qxmgw53ZZqtZuh0JS7VCdVkMR/rNyYemJL6 x+uQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from; bh=XsPc+1MY7uPsNa4DIKA+z9obYPPIRMYTuVF6XbdsXSw=; b=Qww5F4zAIsi37zMBPU2bhAiWlHYGS0GpDHUIF39OXlNQ9cYg3u4/d+BicPjwx9P7ir yLOzNgq5mZtkt6Q58adfLrtHoy5JYUJSOVdaBPLx+hSbP9qEoaLQcsXir8JlFG3abA1d VzG9s6y2E/4/CfEQxOOxfoT7ArVTrYOIabPVfTD1g3eR9gfpdQMIC4cxkRM7ejvg36zi 3GZIyDpYeuCmWtOeYPSc1HRFy+D2mT18e35VsXiYr4NCbR4vI555Pp1SeOhwwnTW0KpL Se39TbYcdFUg/7JddGIX6h8XDp+PevScAKAT1LFij6qKevZuMqZYYucbZHAiQ6O560Dd Rbgw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id s80si51391735pfa.130.2019.01.11.05.37.05; Fri, 11 Jan 2019 05:37:21 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732096AbfAKLEf (ORCPT + 99 others); Fri, 11 Jan 2019 06:04:35 -0500 Received: from mx1.redhat.com ([209.132.183.28]:55248 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725446AbfAKLEe (ORCPT ); Fri, 11 Jan 2019 06:04:34 -0500 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C4ADBC0C9A8B; Fri, 11 Jan 2019 11:04:33 +0000 (UTC) Received: from localhost (ovpn-8-28.pek2.redhat.com [10.72.8.28]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1E72360603; Fri, 11 Jan 2019 11:04:21 +0000 (UTC) From: Ming Lei To: Jens Axboe Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Theodore Ts'o , Omar Sandoval , Sagi Grimberg , Dave Chinner , Kent Overstreet , Mike Snitzer , dm-devel@redhat.com, Alexander Viro , linux-fsdevel@vger.kernel.org, linux-raid@vger.kernel.org, David Sterba , linux-btrfs@vger.kernel.org, "Darrick J . Wong" , linux-xfs@vger.kernel.org, Gao Xiang , Christoph Hellwig , linux-ext4@vger.kernel.org, Coly Li , linux-bcache@vger.kernel.org, Boaz Harrosh , Bob Peterson , cluster-devel@redhat.com, Ming Lei Subject: [PATCH V13 11/19] btrfs: use bvec_last_segment to get bio's last page Date: Fri, 11 Jan 2019 19:01:19 +0800 Message-Id: <20190111110127.21664-12-ming.lei@redhat.com> In-Reply-To: <20190111110127.21664-1-ming.lei@redhat.com> References: <20190111110127.21664-1-ming.lei@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Fri, 11 Jan 2019 11:04:34 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Preparing for supporting multi-page bvec. Reviewed-by: Omar Sandoval Signed-off-by: Ming Lei --- fs/btrfs/extent_io.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index dc8ba3ee515d..c092f88700bd 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2697,11 +2697,12 @@ static int __must_check submit_one_bio(struct bio *bio, int mirror_num, { blk_status_t ret = 0; struct bio_vec *bvec = bio_last_bvec_all(bio); - struct page *page = bvec->bv_page; + struct bio_vec bv; struct extent_io_tree *tree = bio->bi_private; u64 start; - start = page_offset(page) + bvec->bv_offset; + bvec_last_segment(bvec, &bv); + start = page_offset(bv.bv_page) + bv.bv_offset; bio->bi_private = NULL; -- 2.9.5