From patchwork Tue Jun 25 11:05:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13710887 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 3E6111494A8; Tue, 25 Jun 2024 11:06:19 +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=1719313580; cv=none; b=b27UrzaD6fKmqi4UDPvfZe0CrrWnK4yv4Ds95XKZ3xtTPpdQTW0ef0MOATeh0CdM/bgmDQgSUwjF/HumsYr+yKXxoN1gJlqBVHU6JJWzTHLj4o5+BF3MI/crndYN5viIAgEAZ4TCxYLF2d/2D/+SAHkWTWICJ1+oXGfommsceDY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719313580; c=relaxed/simple; bh=ibjRsxFROraYOe2di/GNLknt1odEKOSK+MjDFAFmq5I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pRzlaxWd3nXwadpGa3fZwgvqzTaNC5woOzZifX6ISTaJknWsX/jUTqluSE1fRwXOj3FCMjh2KInhkvsATR42A0YW/AJiG7uwq3x4jUm56UT9lHiL2p3JJYb4Pd1dXoVesHM4F7aUmSGGMu0TbfgCCRqvcsC3MX3Erk6OmUcrfrM= 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=vyqFe67Q; 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="vyqFe67Q" 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=snUPNt/Hw40J/56VP5E8xbfPRtK57297D0rEghhMi/k=; b=vyqFe67QZNl2rbseN6uWdiI9JF YKII7kdo6NAqqUz7L4ECSy0ql+RvBf2j/uHmElyqRBGUEW4EhYrvVwn0LQj6ZZ7LrtUxzSFKS4BGO nUqB93Epd1PGr7tjs7UnGyDOLtFrHyB9UrghQaCi9zLlcnBG5vVjqmhaPJxxiQSFaZfiS/iSjjw5G iP+XOAy8HrdUZyh7AqDslCDOTw+9XtUvthMRJtOi9HG43lAdML939/qKrtGN9jctmzAq7Gm2u2hoR HInnvveP4fkboGyKNfrAhN6DAWIHqXfFUPG6y0jvtdjX9oLTo8iBT6+k2pF1ZiLNRPJxtPHJmktbQ m6aPe8Gg==; Received: from [2001:4bb8:2dc:2ee2:6df6:d2e9:d402:6e6b] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1sM405-00000002UJg-3IzE; Tue, 25 Jun 2024 11:06:14 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Damien Le Moal , Niklas Cassel , Song Liu , Yu Kuai , "Martin K. Petersen" , Alim Akhtar , Avri Altman , Bart Van Assche , linux-block@vger.kernel.org, linux-ide@vger.kernel.org, linux-raid@vger.kernel.org, linux-scsi@vger.kernel.org Subject: [PATCH 2/7] block: correctly report cache type Date: Tue, 25 Jun 2024 13:05:42 +0200 Message-ID: <20240625110603.50885-3-hch@lst.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240625110603.50885-1-hch@lst.de> References: <20240625110603.50885-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-scsi@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 Check the features flag and the override flag, otherwise we're going to always report "write through". Fixes: 1122c0c1cc71 ("block: move cache control settings out of queue->flags") Signed-off-by: Christoph Hellwig --- block/blk-sysfs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 1a984179f3acc5..6db65886e7ed5a 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -453,7 +453,8 @@ static ssize_t queue_io_timeout_store(struct request_queue *q, const char *page, static ssize_t queue_wc_show(struct request_queue *q, char *page) { - if (q->limits.features & BLK_FLAG_WRITE_CACHE_DISABLED) + if (!(q->limits.features & BLK_FEAT_WRITE_CACHE) || + (q->limits.flags & BLK_FLAG_WRITE_CACHE_DISABLED)) return sprintf(page, "write through\n"); return sprintf(page, "write back\n"); }