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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, 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 9367DC636C9 for ; Thu, 15 Jul 2021 19:28:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7897861412 for ; Thu, 15 Jul 2021 19:28:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343543AbhGOT3Z (ORCPT ); Thu, 15 Jul 2021 15:29:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:46396 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243855AbhGOTKK (ORCPT ); Thu, 15 Jul 2021 15:10:10 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id B2AC5613E6; Thu, 15 Jul 2021 19:06:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626376010; bh=C7djTTCjYd0cKj88eqwliCRjLiPRX/To8ipnMZj28IM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=S6yprncQkoel0IvAWpdVZYW0vvb9cVjWlJ+v//fALkP9SWhVxNCYNj6WDwJf636AF OLB193G1rwSrAHy8j/QI6STb97bY3ehqhpyheFWfQqxdmcDDQ01UVrJeuft9e8kXtA q+d/hifuAEdrHgvxX0p9DRmMPAYKPt+JRLYD8Kug= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Damien Le Moal , Christoph Hellwig , Hannes Reinecke , Chaitanya Kulkarni , Himanshu Madhani , Jens Axboe , Mike Snitzer , Sasha Levin Subject: [PATCH 5.13 071/266] block: introduce BIO_ZONE_WRITE_LOCKED bio flag Date: Thu, 15 Jul 2021 20:37:06 +0200 Message-Id: <20210715182626.707001652@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210715182613.933608881@linuxfoundation.org> References: <20210715182613.933608881@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Damien Le Moal [ Upstream commit 9ffbbb435d8f566a0924ce4b5dc7fc1bceb6dbf8 ] Introduce the BIO flag BIO_ZONE_WRITE_LOCKED to indicate that a BIO owns the write lock of the zone it is targeting. This is the counterpart of the struct request flag RQF_ZONE_WRITE_LOCKED. This new BIO flag is reserved for now for zone write locking control for device mapper targets exposing a zoned block device. Since in this case, the lock flag must not be propagated to the struct request that will be used to process the BIO, a BIO private flag is used rather than changing the RQF_ZONE_WRITE_LOCKED request flag into a common REQ_XXX flag that could be used for both BIO and request. This avoids conflicts down the stack with the block IO scheduler zone write locking (in mq-deadline). Signed-off-by: Damien Le Moal Reviewed-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Reviewed-by: Chaitanya Kulkarni Reviewed-by: Himanshu Madhani Acked-by: Jens Axboe Signed-off-by: Mike Snitzer Signed-off-by: Sasha Levin --- include/linux/blk_types.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index db026b6ec15a..e5cf12f102a2 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -304,6 +304,7 @@ enum { BIO_CGROUP_ACCT, /* has been accounted to a cgroup */ BIO_TRACKED, /* set if bio goes through the rq_qos path */ BIO_REMAPPED, + BIO_ZONE_WRITE_LOCKED, /* Owns a zoned device zone write lock */ BIO_FLAG_LAST }; -- 2.30.2