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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 60660CD1292 for ; Mon, 8 Apr 2024 01:42:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:To:From:Reply-To: Cc:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=mQCgD6x1bNjJruigBbUFjIdHnFnx8dp5N4lLkCaYvHQ=; b=rvvZum4lv8K/j3/aiz4470RFf/ HkHr5G4l4NDNM46vjqv7nmZ6TKTrmqtU+J6wdnQTfGPkfATIX2vRjNGZex9zsy0jaIeo68qXiW/sI x5f5NWaoha/mLrhwOGma69WiLGZRZWcENKf7clK6NKRfMmZeuSX35ev5aTvELp5qvmZIGotcvkE/K EBY83ZujyjurNAktRMqOqOa9E/D2xGX1r6kLe2td2Xawlg99qR++3K4xzfs8zzNMA4ZSYtA4S+iAC NNdNPv02CvISr1C63DdFH3QDcXrPW5GHzxKd6fKjh0P+WrqBguz0DRPh4qALMNzY9ujPUxuANxDjU g1MG0J2A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rte1i-0000000DvvD-0mJq; Mon, 08 Apr 2024 01:42:26 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rte1G-0000000DvW0-21UM for linux-nvme@lists.infradead.org; Mon, 08 Apr 2024 01:42:03 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id D58AC60DDF; Mon, 8 Apr 2024 01:41:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 48C1DC43394; Mon, 8 Apr 2024 01:41:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1712540517; bh=BAiWNhCwyIY1LaDWb3Dd92O78HHu2u6zYh3FJtbEcvw=; h=From:To:Subject:Date:In-Reply-To:References:From; b=T9XSrn2gljA/maWyfaIMjWYg+nPDvbA9ATjAGUw+rN6GsoqxJVeC/6hUMyy10B1dw WHc7ai5v+idZuBYvvp+oADDgChySFyEvSxH4QYQaTu7UKXGh6vO7Z2wNnPPcG/zzT/ SHDIXWSzSbgZS9bcBHEkHc+tezyZqgufgWqmwqXX7U0j/+FUovAif1iJEfriH4qJ2C bHDeLMp8wwoyGsfnI4BOnJsWMQQFtYcOH+xN4fH3hlyj3epFk5lOEls9N92c63mI/d Gwj5gHzV80TluQKZj4euC0wVHq1qSgOxA2RY2ncohyYZmSZMjtUfaa3MgbNBofMr2Y wnvrQcXliUp4A== From: Damien Le Moal To: linux-block@vger.kernel.org, Jens Axboe , linux-scsi@vger.kernel.org, "Martin K . Petersen" , dm-devel@lists.linux.dev, Mike Snitzer , linux-nvme@lists.infradead.org, Keith Busch , Christoph Hellwig Subject: [PATCH v7 14/28] ublk_drv: Do not request ELEVATOR_F_ZBD_SEQ_WRITE elevator feature Date: Mon, 8 Apr 2024 10:41:14 +0900 Message-ID: <20240408014128.205141-15-dlemoal@kernel.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240408014128.205141-1-dlemoal@kernel.org> References: <20240408014128.205141-1-dlemoal@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240407_184158_839870_2F907BFD X-CRM114-Status: GOOD ( 12.27 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org With zone write plugging enabled at the block layer level, any zone device can only ever see at most a single write operation per zone. There is thus no need to request a block scheduler with strick per-zone sequential write ordering control through the ELEVATOR_F_ZBD_SEQ_WRITE feature. Removing this allows using a zoned ublk device with any scheduler, including "none". Signed-off-by: Damien Le Moal Reviewed-by: Hannes Reinecke Reviewed-by: Christoph Hellwig Reviewed-by: Bart Van Assche Tested-by: Hans Holmberg Tested-by: Dennis Maisenbacher Reviewed-by: Martin K. Petersen --- drivers/block/ublk_drv.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c index bea3d5cf8a83..ab6af84e327c 100644 --- a/drivers/block/ublk_drv.c +++ b/drivers/block/ublk_drv.c @@ -249,8 +249,7 @@ static int ublk_dev_param_zoned_validate(const struct ublk_device *ub) static void ublk_dev_param_zoned_apply(struct ublk_device *ub) { blk_queue_flag_set(QUEUE_FLAG_ZONE_RESETALL, ub->ub_disk->queue); - blk_queue_required_elevator_features(ub->ub_disk->queue, - ELEVATOR_F_ZBD_SEQ_WRITE); + ub->ub_disk->nr_zones = ublk_get_nr_zones(ub); } -- 2.44.0