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=-16.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 7AA4BC83030 for ; Sat, 28 Nov 2020 22:12:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 40B312224C for ; Sat, 28 Nov 2020 22:12:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="IRB8hjpF" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389504AbgK1VuB (ORCPT ); Sat, 28 Nov 2020 16:50:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40794 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730609AbgK1Sm7 (ORCPT ); Sat, 28 Nov 2020 13:42:59 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB7BEC02577E; Sat, 28 Nov 2020 08:15:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.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=qOmzpRMb4vEzGwba4P3m5gENBKcm1ZKj8N5Pylgvbms=; b=IRB8hjpF/ywVtkPyjbqecQa7lq RssKcyx2Ok0vmgR1h3eaUGnGWMBY3poXzElQI/dHQOwjcnJrS3u4SJECUZJ+IQ7AhTmWuRnzHDIh0 xnqQmSjjOdj7zKjMMmLGkvdhJLKymWsD3UOCxFnSw2Bv4VRAybQPIXVR+GZMs3dGc1+tlIWSlaj2e CpygcyrJP06LduiqjIS76IiB7B52RCce8WijP8xmYk0pcNCvs5viJUD4Dban0JeHr25yImXluOmVq 4AqbV9WpcTe0tO3jNOuocp5V3JlkJIA2hTFOctikEisfiaM37Vw8g3P1KJR0KzhbJ+gjMX/TDtJnZ JnmKOF1w==; Received: from [2001:4bb8:18c:1dd6:48f3:741a:602e:7fdd] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kj2se-0000Dq-Ja; Sat, 28 Nov 2020 16:15:24 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Tejun Heo , Josef Bacik , Coly Li , Mike Snitzer , Greg Kroah-Hartman , Jan Kara , Johannes Thumshirn , dm-devel@redhat.com, Jan Kara , linux-block@vger.kernel.org, linux-bcache@vger.kernel.org, linux-mtd@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 08/45] dm: simplify flush_bio initialization in __send_empty_flush Date: Sat, 28 Nov 2020 17:14:33 +0100 Message-Id: <20201128161510.347752-9-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201128161510.347752-1-hch@lst.de> References: <20201128161510.347752-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org We don't really need the struct block_device to initialize a bio. So switch from using bio_set_dev to manually setting up bi_disk (bi_partno will always be zero and has been cleared by bio_init already). Signed-off-by: Christoph Hellwig Acked-by: Mike Snitzer --- drivers/md/dm.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 50541d336c719b..ab0a8335f098d9 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1422,18 +1422,12 @@ static int __send_empty_flush(struct clone_info *ci) */ bio_init(&flush_bio, NULL, 0); flush_bio.bi_opf = REQ_OP_WRITE | REQ_PREFLUSH | REQ_SYNC; + flush_bio.bi_disk = ci->io->md->disk; + bio_associate_blkg(&flush_bio); + ci->bio = &flush_bio; ci->sector_count = 0; - /* - * Empty flush uses a statically initialized bio, as the base for - * cloning. However, blkg association requires that a bdev is - * associated with a gendisk, which doesn't happen until the bdev is - * opened. So, blkg association is done at issue time of the flush - * rather than when the device is created in alloc_dev(). - */ - bio_set_dev(ci->bio, ci->io->md->bdev); - BUG_ON(bio_has_data(ci->bio)); while ((ti = dm_table_get_target(ci->map, target_nr++))) __send_duplicate_bios(ci, ti, ti->num_flush_bios, NULL); -- 2.29.2