From mboxrd@z Thu Jan 1 00:00:00 1970 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 A797419F103; Thu, 20 Mar 2025 05:26:17 +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=1742448383; cv=none; b=WRqDmhcZwKy1JY4mtpu7BmyTRY9dWn1BpKsE11mouNZMvL8K3NzqR8XujZUx1AL00ZKisp5YZy+1hcI09Bz0pCxxekwvBa5Kp7R9RTEB18d3VxPnhWT6iRgNW+QXSqHRmkjmj5YRKQOfUnaqBNjyy3v+sfOdYgXDKM7IILufnrs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742448383; c=relaxed/simple; bh=CMvXFlGji2WL4ZwjBmj7fOgEpQeC75Pxnu8TpGrYv+Q=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=QcSYRCiSJwV4dQKF7QdPisk+WY8apSk8vEHW6fAEMajUs8N6lJjW6KHOCup5l6I5KoQVBQoV6cOqKB/enW36UXhaJKVbrVMLU5GLnRCVXFY6/OKffeZF/0vyj9r8RYb+t/Rs9aoGo4+IWySmaYkfiMrY8GOBip75YOOG1yZv5Ac= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=38zCanUF; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org 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="38zCanUF" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=kObeWsSN0DZo8q5Tjh7xRjzIZ3ERaIwegvSR1wk7ZK8=; b=38zCanUFeeI6ZNWOGJqJ7jNkZ6 7jS7cr13EeW6+8rJ3d3QLPdnI4y5H5pnUf1T3jKl5JZQri3aR0ZXA8riD+7sqNAddgP9tMQjk6S9G 7sZo2dOT+/Hb8CcWas5fNhNt3eHaZ+5Y7a3sQ7Oyk+nj2pT4poN7TXZniaa3TerM2amMe/Pidfa1m AGKmrI2nKXbTirD7k8okGOMPwnrJEqW6eCIbTlY8sVn63eEVQBSBNOOV2crvSOZJECUSYrQNZXX86 RSqwDPWEV/V2fyZdpvqWeswZNKZkTYL3pzivq9uNjFm0uliDZ/MW/A0b8eNR37i/1sT2ZWm3F5JQK DZ++rHlA==; Received: from hch by bombadil.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1tv8Q5-0000000BDTZ-0RBp; Thu, 20 Mar 2025 05:26:17 +0000 Date: Wed, 19 Mar 2025 22:26:17 -0700 From: Christoph Hellwig To: Jens Axboe Cc: Ming Lei , Mikulas Patocka , Alasdair Kergon , Mike Snitzer , linux-block@vger.kernel.org, dm-devel@lists.linux.dev Subject: Re: [PATC] block: update queue limits atomically Message-ID: References: <6ebdd2ae-8fc2-4072-b131-a7c0da56d3f2@kernel.dk> Precedence: bulk X-Mailing-List: linux-block@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: <6ebdd2ae-8fc2-4072-b131-a7c0da56d3f2@kernel.dk> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Tue, Mar 18, 2025 at 07:58:09PM -0600, Jens Axboe wrote: > Agree - it'd be much better to have the bio drivers provide the same > guarantees that we get on the request side, rather than play games with > this and pretend that concurrent update and usage is fine. Exactly. That is long overdue.