From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (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 CB3A8748D; Thu, 12 Dec 2024 19:35:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734032134; cv=none; b=UmQpq629ST+YtZZxT93Zg1Cg3RbjVPr9DELHivou+2hr93cRkAHS9y+D5n156RbQupk6fPXkFDT4Rm13hP87eRWOcq49ahBszUMUHM1TosLxhex8l9w6mJYahb6+K5KXo7wKJkKWZzfebYYr5jcbjC9F39PVpynoXdZ14uT5L5s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734032134; c=relaxed/simple; bh=Z7yzPMHkmTT8PMtSrwYIaeODiYMstVNWdy5UiKGqgBw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=GY7UYf6evQF1KYygzHrxkPpNwRSOg8IXtS8HC+m5FJUfhW9msP9JbPwJmGt77+G9uwbaqnyDxeuCv7La1oA9KCcBqW4nQtlrgGelEqBvSDrjQzxv/zW5OTCAsDyQuHcOnQ0B8WsQqkBX9MYKQqkFBCMyoU48OtoZdWrmTzSlgj4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=pVOoqHUQ; arc=none smtp.client-ip=90.155.50.34 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=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="pVOoqHUQ" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=Z7yzPMHkmTT8PMtSrwYIaeODiYMstVNWdy5UiKGqgBw=; b=pVOoqHUQ7Zt5Qsg9jSa9F5UTf/ kpuW1kEPD71IH1+6jg/JcsyLGEJWTephj249UVVONq/H6AwnTzqTOy5fgI2logcAZFVxTi+jNx5Fl l9iKkz24J0ePCSdcLrIV2rd5uQFMaARprRnfyRQxlHQ09oGsPxqsIuBZP9hGt/k/+/E3cEc3+cT9v XJ4+17CDPv+vtcPXwlc/N0F3QnPl+IknzVzbC0BiqRw627FVPFaQv29Cy0qfV7f1uN6VzrkgpQsh4 8brp/R0pvJC/AI/QWpbxkF7eNHXMykSdgHH5bAJnAinsaZB3MMXoy5k1HFpG4isAhAiFJAVoO6awn p4TD5owg==; Received: from willy by casper.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1tLoy8-00000007ga1-2emw; Thu, 12 Dec 2024 19:35:28 +0000 Date: Thu, 12 Dec 2024 19:35:28 +0000 From: Matthew Wilcox To: Jens Axboe Cc: "Christoph Lameter (Ampere)" , Christoph Hellwig , "Darrick J. Wong" , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, hannes@cmpxchg.org, clm@meta.com, linux-kernel@vger.kernel.org, kirill@shutemov.name, bfoster@redhat.com Subject: Re: [PATCHSET v6 0/12] Uncached buffered IO Message-ID: References: <20241203153232.92224-2-axboe@kernel.dk> <668f271f-dc44-49e1-b8dc-08e65e1fec23@kernel.dk> <36599cce-42ba-ddfb-656f-162548fdb300@gentwo.org> <20241204055241.GA7820@frogsfrogsfrogs> <04e11417-cf68-4014-a7f7-e51392352e9d@kernel.dk> <2f79ff03-48ee-54bf-b928-e9519b3edfc7@gentwo.org> <383d3adc-e939-44b2-9110-4db9b4477401@kernel.dk> Precedence: bulk X-Mailing-List: linux-kernel@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: <383d3adc-e939-44b2-9110-4db9b4477401@kernel.dk> On Thu, Dec 12, 2024 at 12:14:23PM -0700, Jens Axboe wrote: > Like I mentioned earlier, the fact that it's cached for the duration of > the operation is more of an implementation detail that developers need > not worry about. What's important is that it's not cached AFTER. I still > feel UNCACHED is the best description, but I'll change it to DONTCACHE > for the next version just to avoid the overlap with other in-kernel > uses. Regardless of the user API name, I like PG_streaming for the folio flag name.