From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) (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 A225121FD96; Wed, 30 Oct 2024 17:15:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.95.11.211 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730308546; cv=none; b=K8BiHQulna1McL1u469v0eMCVFzekqXRODdc8iiUlxdqK+R0SaMYd5L1BaFST5lU7cOXVzz7+cN5Zi0wUqMf4/US/IVBhzGicwakNPRelaOt15fGNO0AnxM+DXdhvqYhLbMvuiftdQlqdlgnOn8pEfpQmPph6cXhl13Yv8LJehM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730308546; c=relaxed/simple; bh=IJdnnD1uUE0ZHuFk2kqH8UbU4rUPWlzafuUOmtVe4PE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=nslbTf9kjDtXoKcRlHVfNvuDNoxFSFRJhCkh46OO1zeQVCTAB5rnU58nO22fmZIjoGL2nL1/o26q//U5ezLrWy5GT/vccpN9fSwVhtARWmPi8c0vsXQh6SBUfpu/15fFAJVXXNeFShTAHQ4PDeM+wNQfJBnnMnNqYWiaRIoErp4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de; spf=pass smtp.mailfrom=lst.de; arc=none smtp.client-ip=213.95.11.211 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lst.de Received: by verein.lst.de (Postfix, from userid 2407) id B10FB227A8E; Wed, 30 Oct 2024 18:15:41 +0100 (CET) Date: Wed, 30 Oct 2024 18:15:41 +0100 From: Christoph Hellwig To: Keith Busch Cc: Christoph Hellwig , Keith Busch , linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, joshi.k@samsung.com, javier.gonz@samsung.com, bvanassche@acm.org, Hannes Reinecke Subject: Re: [PATCHv10 9/9] scsi: set permanent stream count in block limits Message-ID: <20241030171541.GB12580@lst.de> References: <20241029155330.GA27856@lst.de> <20241030045526.GA32385@lst.de> <20241030154556.GA4449@lst.de> <20241030155052.GA4984@lst.de> <20241030165708.GA11009@lst.de> Precedence: bulk X-Mailing-List: io-uring@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: User-Agent: Mutt/1.5.17 (2007-11-01) On Wed, Oct 30, 2024 at 11:05:03AM -0600, Keith Busch wrote: > On Wed, Oct 30, 2024 at 05:57:08PM +0100, Christoph Hellwig wrote: > > And once it uses by default, taking it away will have someone scream > > regresion, because we're not taking it away form that super special > > use case. > > Refusing to allow something because someone might find it useful has got > to be the worst reasoning I've heard. :) That's not that point. The point is by locking us in we can't actually do the proper thing. And that's what I'm really worried about. Especially with the not all that great numbers in the success story.