From patchwork Sun Jan 28 16:58:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13534532 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.subspace.kernel.org (Postfix) with ESMTPS id BD0372E832; Sun, 28 Jan 2024 16:58:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706461133; cv=none; b=c44y9Imn6A3GUUVgxV+zk4Ao7uH3QuB+r2BpdCHjQveAtfdqAHepH6EYZC1INoYzdPuJeZ6k2x4KkRJ7QjmYeBNS9WORKmLhCDkCNO/B12MaCTiMAZhhwM+9QjKIX2fTsdLzxDkhJq7kXUt6VG00HwCFIF61wyTVRCszUOUnKvQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706461133; c=relaxed/simple; bh=cTCl2JGW+TFoPFTqRvuoX9sm/vDAcQB7JPcHGhFmVRM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=uF7XsMUfgEqC9IuBs0BTdzg5Vxn636dyKeCxMG+8xwTVYHZfefm+2IZR+pv2GS5nq++XzudE790lUTfIg/bCy0BnxAt65XipaZiP1mTf+/PMH2KLtXeT6AVei9KKXEd3jCP04+Et+cb85beONhuz+1qGMnHhx4ovSsaLsCE4ubY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=iIiW3qou; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="iIiW3qou" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; 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=P7lJeX1MV89nvGvN/Kp1ZllbRc7C3W/7Ktl++U1k1BA=; b=iIiW3qouZ05SHMy8nEy2xjoqCo JFtpm7pT5UdqQWelEDM0NLe+yFhlJPhcYBM244pSe0Mdy0hf2ehxQFucRZK7qZ4JjgyjCgpTSJT+N wReCSl9Jd7Rr9c6YjpK3tnzRFJJdpR6rhegiPNYjf0++rAClkbSsCgHFbig+bZEz+vnZKEe0ZMeh6 7b2/lEJn8/RYTJtQAXMMfjaA2yXqmy4zE6SRHjVSYD8+FDkzHS7Qi1kplvS3vvfpkW/JvrmCQ2uoJ QyuQXnsGkgaOmMxxjPjZpojz05ozS5zVmxym20MrnknqHw+4vCumfNLBLBcHtbyymtHPlL6I+Lqi2 8QQPog+A==; Received: from [2001:4bb8:182:6550:c70:4a89:bc61:3] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1rU8UY-0000000A29w-46z7; Sun, 28 Jan 2024 16:58:47 +0000 From: Christoph Hellwig To: Jens Axboe Cc: "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , Paolo Bonzini , Stefan Hajnoczi , "Martin K. Petersen" , Damien Le Moal , Keith Busch , Sagi Grimberg , linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, virtualization@lists.linux.dev, Hannes Reinecke Subject: [PATCH 06/14] block: use queue_limits_commit_update in queue_discard_max_store Date: Sun, 28 Jan 2024 17:58:05 +0100 Message-Id: <20240128165813.3213508-7-hch@lst.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240128165813.3213508-1-hch@lst.de> References: <20240128165813.3213508-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Convert queue_discard_max_store to use queue_limits_commit_update to check and update the max_discard_sectors limit and freeze the queue before doing so to ensure we don't have requests in flight while changing the limits. Signed-off-by: Christoph Hellwig Reviewed-by: Damien Le Moal Reviewed-by: Hannes Reinecke --- block/blk-sysfs.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 54e10604ddb1dd..8c8f69d8ba48ee 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -175,7 +175,9 @@ static ssize_t queue_discard_max_store(struct request_queue *q, const char *page, size_t count) { unsigned long max_discard_bytes; + struct queue_limits lim; ssize_t ret; + int err; ret = queue_var_store(&max_discard_bytes, page, count); if (ret < 0) @@ -187,10 +189,14 @@ static ssize_t queue_discard_max_store(struct request_queue *q, if ((max_discard_bytes >> SECTOR_SHIFT) > UINT_MAX) return -EINVAL; - q->limits.max_user_discard_sectors = max_discard_bytes >> SECTOR_SHIFT; - q->limits.max_discard_sectors = - min_not_zero(q->limits.max_hw_discard_sectors, - q->limits.max_user_discard_sectors); + blk_mq_freeze_queue(q); + lim = queue_limits_start_update(q); + lim.max_user_discard_sectors = max_discard_bytes >> SECTOR_SHIFT; + err = queue_limits_commit_update(q, &lim); + blk_mq_unfreeze_queue(q); + + if (err) + return err; return ret; }