From patchwork Tue Jun 25 14:59:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13711333 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 20B1116EC07; Tue, 25 Jun 2024 15:00:11 +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=1719327613; cv=none; b=I5yUO2U4ZmgAiUuCtexuoVeb9Un0z3lW2aC7nrzrVXoByMEkirBj2IdyFwwkIJtkCeDprEW6ycTVF98DxdUPF2txKh/xcpbh6jx8RriJdvf9y5rwuauTuuWjeWSdZc8TuyVYf64NEH78BhKp1IuJiEachkWDN16aN+4G9yrV9Hg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719327613; c=relaxed/simple; bh=ibjRsxFROraYOe2di/GNLknt1odEKOSK+MjDFAFmq5I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=P+gC7aPYpsuBHVuZy3Tnpj6psKmxQPAau9HLWKrBWTM4cH/YKZiHgE3ZvshDzRVzPZVd3d3WrwJjP/CNy93R4kFbEzdGZ4JF20/irqr3p+cDZha1b5wLQZ4vMe3jiMwRu2SWFvJewv/kTJ0Vxe6Y+QxFOS7xwRCEEJpC4BJPmtw= 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=FsC5kRvk; 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="FsC5kRvk" 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=FsC5kRvkrokDt8YffZMzMgwlMu Xi6z+0yZkwoFIOFQwJUiYu7s3MabOyhqR89LYs5bw27J4yfBuRXXMOGiDRYJQcdUOpiivPO7quyF4 n526JhX+O6GORj5fsuZ5gHmbguXaJq/Nb5aVxJq05pDOSVoRsUpcEDlOhS0jNlnIjsbY3InjgNG45 6LJfK7nqCGrULYUeaVs5mVxkPJ3O4CY5ZGtXTRVTEsALTJBamRvSluHOx1gZJXRxi3wKAFd0UBfvF sTvtnizpKqKVI6F4WCaZEFuRiJeVRKWOFdz+73/8bsml3EaBx4Uxeun3qYfid46b1YgT95YcVKuEy mCzofIBw==; Received: from [2001:4bb8:2c2:e897:e635:808f:2aad:e9c8] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1sM7eR-00000003IiQ-3GKt; Tue, 25 Jun 2024 15:00:08 +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 2/8] block: correctly report cache type Date: Tue, 25 Jun 2024 16:59:47 +0200 Message-ID: <20240625145955.115252-3-hch@lst.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240625145955.115252-1-hch@lst.de> References: <20240625145955.115252-1-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 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 Reviewed-by: Damien Le Moal --- 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"); }