From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 5A71E1F3D53 for ; Wed, 8 Jan 2025 10:44:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736333075; cv=none; b=ViHIGXTarV6H1GAVEX1G+YlFcMta3sz6gEYmQL9uQ5GBN8Q+VO72xINN/fhcomnuie9HKwm3+N07Sl+PGL0VesQHb83jGzLYefBH1jCXkmeqhLGVeGoTTbGZeI3vP3pgRlgRyS7iqVyS2ZIl+OGmC+Kc0Yglf85tmnc/298RRkg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736333075; c=relaxed/simple; bh=ZUA9hXAvTO402Lqp6o9aZpjzmmWea7t6GMMUlrpj06I=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=hrb1RId3w5FBvCt3JF6J/2eAglSngccaus9IboKqabGFljQmbxsm+N0dgUa8y+sV0KRWCXaH3yVf2KAuHELWHFhCYOtt92V4OFW8ffHmYk+skyKMh18QSepjl1QDWKLOmfsfxKXVRmlQ3IEGUoacoOmGUMR0NuuZphswCOK1HjI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=ZwvNOTsu; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ZwvNOTsu" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1736333073; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=B8+WjPvgGIbhzkcemmv78w2LxK9mcyjSw5bhvDUQPa8=; b=ZwvNOTsupawKXckwXxlCA9yDsCPJy/Zuy4UI6lBiyS2QG13LGucNjQqDe1rtSCFZHafiQD lBbHzPqYcNLR6unAwm6PzRYT70oGvV8FV4DKm11ukN5rWUVts8chCVijMOJIj9bApZa90n PdXfXvyuy7CztV7M+ItP0aUSVPRvbcs= Received: from mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-554-w-R51ZUcOOKsnr9FUL6S7Q-1; Wed, 08 Jan 2025 05:44:30 -0500 X-MC-Unique: w-R51ZUcOOKsnr9FUL6S7Q-1 X-Mimecast-MFC-AGG-ID: w-R51ZUcOOKsnr9FUL6S7Q Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 52C9A1944B2E; Wed, 8 Jan 2025 10:44:28 +0000 (UTC) Received: from fedora (unknown [10.72.116.74]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 78259195608D; Wed, 8 Jan 2025 10:44:22 +0000 (UTC) Date: Wed, 8 Jan 2025 18:44:14 +0800 From: Ming Lei To: Christoph Hellwig Cc: Jens Axboe , Damien Le Moal , Nilay Shroff , linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, nbd@other.debian.org, linux-scsi@vger.kernel.org, usb-storage@lists.one-eyed-alien.net Subject: Re: [PATCH 10/10] loop: fix queue freeze vs limits lock order Message-ID: References: <20250108092520.1325324-1-hch@lst.de> <20250108092520.1325324-11-hch@lst.de> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250108092520.1325324-11-hch@lst.de> X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 On Wed, Jan 08, 2025 at 10:25:07AM +0100, Christoph Hellwig wrote: > Match the locking order used by the core block code by only freezing > the queue after taking the limits lock using the > queue_limits_commit_update_frozen helper and document the callers that > do not freeze the queue at all. > > Signed-off-by: Christoph Hellwig > --- Reviewed-by: Ming Lei Thanks, Ming