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 07B53C5478C for ; Wed, 28 Feb 2024 18:12:22 +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:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Vp6cPOGmx7IsY/Gom3ohdEDfNj/bokcwTvb4p5mmNMM=; b=n343XbBtqla33n3ve6BJbSbMl/ IFsEcapquhWLhQPX/IYXc2WVnkRgONZI/RYb9kSg3czcsefw72xD2U3tztGdjDhu6abDy2IfZ0rd8 xAxK4Px8v5o0LrIShv70tsqeyqCBbF464hTj8AYzL+XBGv4MYHvfgwqfEmr6+nH2wjsqgxqmrcQUl OhkdBpErn0LSmgqkU0TqDvTe5AfbGl6bK0RQnSJvfj8pL5mN2q4SiPycylsOzEdzEFOiZx6V7HF5J /KFMUNV+tOePCq7ztnfW4K44HjlijlVxF8eHG1mfxZ7tLtoG45S+2IdtweNqixzuzl4nnmV5F+h/b Ow/lgfmQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rfOPi-0000000ARD4-2BbG; Wed, 28 Feb 2024 18:12:18 +0000 Received: from [4.28.11.157] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1rfOPf-0000000ARCA-2JrS; Wed, 28 Feb 2024 18:12:15 +0000 From: Christoph Hellwig To: Hector Martin , Sven Peter , Keith Busch , Sagi Grimberg , James Smart , Chaitanya Kulkarni Cc: Alyssa Rosenzweig , asahi@lists.linux.dev, linux-nvme@lists.infradead.org Subject: [PATCH 01/21] block: add a queue_limits_set helper Date: Wed, 28 Feb 2024 10:11:55 -0800 Message-Id: <20240228181215.873854-2-hch@lst.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240228181215.873854-1-hch@lst.de> References: <20240228181215.873854-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 Add a small wrapper around queue_limits_commit_update for stacking drivers that don't want to update existing limits, but set an entirely new set. Signed-off-by: Christoph Hellwig --- block/blk-settings.c | 18 ++++++++++++++++++ include/linux/blkdev.h | 1 + 2 files changed, 19 insertions(+) diff --git a/block/blk-settings.c b/block/blk-settings.c index b6bbe683d218fa..1989a177be201b 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -266,6 +266,24 @@ int queue_limits_commit_update(struct request_queue *q, } EXPORT_SYMBOL_GPL(queue_limits_commit_update); +/** + * queue_limits_commit_set - apply queue limits to queue + * @q: queue to update + * @lim: limits to apply + * + * Apply the limits in @lim that were freshly initialized to @q. + * To update existing limits use queue_limits_start_update() and + * queue_limits_commit_update() instead. + * + * Returns 0 if successful, else a negative error code. + */ +int queue_limits_set(struct request_queue *q, struct queue_limits *lim) +{ + mutex_lock(&q->limits_lock); + return queue_limits_commit_update(q, lim); +} +EXPORT_SYMBOL_GPL(queue_limits_set); + /** * blk_queue_bounce_limit - set bounce buffer limit for queue * @q: the request queue for the device diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index a14ea934413850..dd510ad7ce4b45 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -889,6 +889,7 @@ queue_limits_start_update(struct request_queue *q) } int queue_limits_commit_update(struct request_queue *q, struct queue_limits *lim); +int queue_limits_set(struct request_queue *q, struct queue_limits *lim); /* * Access functions for manipulating queue properties -- 2.39.2