From patchwork Fri Jan 11 11:01:19 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ming Lei X-Patchwork-Id: 10757761 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 44AA113B5 for ; Fri, 11 Jan 2019 11:04:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EA60B29AF7 for ; Fri, 11 Jan 2019 11:04:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DE5B029BC7; Fri, 11 Jan 2019 11:04:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9FCF929AF7 for ; Fri, 11 Jan 2019 11:04:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731034AbfAKLEf (ORCPT ); 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-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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;