Message ID | 20190111110127.21664-14-ming.lei@redhat.com (mailing list archive) |
---|---|
State | Not Applicable, archived |
Delegated to: | Mike Snitzer |
Headers | show
Return-Path: <dm-devel-bounces@redhat.com> 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 4554E13B5 for <patchwork-dm-devel@patchwork.kernel.org>; Fri, 11 Jan 2019 11:05:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9282329AF6 for <patchwork-dm-devel@patchwork.kernel.org>; Fri, 11 Jan 2019 11:05:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 85D6629BC4; Fri, 11 Jan 2019 11:05:09 +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=ham version=3.3.1 Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 31FCE29AF6 for <patchwork-dm-devel@patchwork.kernel.org>; Fri, 11 Jan 2019 11:05:09 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 18387356CF; Fri, 11 Jan 2019 11:05:08 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id D93296A69C; Fri, 11 Jan 2019 11:05:07 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 75AE83F603; Fri, 11 Jan 2019 11:05:07 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id x0BB5575031735 for <dm-devel@listman.util.phx.redhat.com>; Fri, 11 Jan 2019 06:05:05 -0500 Received: by smtp.corp.redhat.com (Postfix) id D9FF81815D; Fri, 11 Jan 2019 11:05:05 +0000 (UTC) Delivered-To: dm-devel@redhat.com Received: from localhost (ovpn-8-28.pek2.redhat.com [10.72.8.28]) by smtp.corp.redhat.com (Postfix) with ESMTP id 55BE45D9C8; Fri, 11 Jan 2019 11:04:52 +0000 (UTC) From: Ming Lei <ming.lei@redhat.com> To: Jens Axboe <axboe@kernel.dk> Date: Fri, 11 Jan 2019 19:01:21 +0800 Message-Id: <20190111110127.21664-14-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 10.5.11.14 X-loop: dm-devel@redhat.com Cc: Mike Snitzer <snitzer@redhat.com>, linux-mm@kvack.org, dm-devel@redhat.com, Christoph Hellwig <hch@lst.de>, Sagi Grimberg <sagi@grimberg.me>, "Darrick J . Wong" <darrick.wong@oracle.com>, Omar Sandoval <osandov@fb.com>, cluster-devel@redhat.com, linux-ext4@vger.kernel.org, Kent Overstreet <kent.overstreet@gmail.com>, Boaz Harrosh <ooo@electrozaur.com>, Gao Xiang <gaoxiang25@huawei.com>, Coly Li <colyli@suse.de>, linux-raid@vger.kernel.org, Bob Peterson <rpeterso@redhat.com>, linux-bcache@vger.kernel.org, Alexander Viro <viro@zeniv.linux.org.uk>, Dave Chinner <dchinner@redhat.com>, David Sterba <dsterba@suse.com>, Ming Lei <ming.lei@redhat.com>, linux-block@vger.kernel.org, Theodore Ts'o <tytso@mit.edu>, linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-btrfs@vger.kernel.org Subject: [dm-devel] [PATCH V13 13/19] bcache: avoid to use bio_for_each_segment_all() in bch_bio_alloc_pages() X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development <dm-devel.redhat.com> List-Unsubscribe: <https://www.redhat.com/mailman/options/dm-devel>, <mailto:dm-devel-request@redhat.com?subject=unsubscribe> List-Archive: <https://www.redhat.com/archives/dm-devel> List-Post: <mailto:dm-devel@redhat.com> List-Help: <mailto:dm-devel-request@redhat.com?subject=help> List-Subscribe: <https://www.redhat.com/mailman/listinfo/dm-devel>, <mailto:dm-devel-request@redhat.com?subject=subscribe> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Fri, 11 Jan 2019 11:05:08 +0000 (UTC) X-Virus-Scanned: ClamAV using ClamSMTP |
Series |
block: support multi-page bvec
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expand
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diff --git a/drivers/md/bcache/util.c b/drivers/md/bcache/util.c index 20eddeac1531..62fb917f7a4f 100644 --- a/drivers/md/bcache/util.c +++ b/drivers/md/bcache/util.c @@ -270,7 +270,11 @@ int bch_bio_alloc_pages(struct bio *bio, gfp_t gfp_mask) int i; struct bio_vec *bv; - bio_for_each_segment_all(bv, bio, i) { + /* + * This is called on freshly new bio, so it is safe to access the + * bvec table directly. + */ + for (i = 0, bv = bio->bi_io_vec; i < bio->bi_vcnt; bv++, i++) { bv->bv_page = alloc_page(gfp_mask); if (!bv->bv_page) { while (--bv >= bio->bi_io_vec)