From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 060F51DA5F; Wed, 4 Dec 2024 05:52:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733291563; cv=none; b=OyLDdmMSJ/txYmGf9KDVLmrmp+SRmYpUdwpNKAX1MBuuacYA4i0y9yXCwdjTkDEkkGKIPu9GB8t/G6FKgkUNoJxT8jOI9Sh50IaASEDApf2BjNzpUYdbBSeV1W4TVtMukFAkFZE+UAyFlGnjl4pa5JbzpJD4uBpIcNk6Zg6YgMs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733291563; c=relaxed/simple; bh=6PH4CBuizRBwQhle5LobHoTfnjtbvPyw5NCKz/3TYD4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=geWmMO+xIEVMh99LLd36Vv79zPqPTCL9seNNIcOpZAM9ZevkYyzFGQb8hF9xfiA7EJGlsBL2qZ5g5baEDTmryxf2I1Ak8RtBaG0opYLz2/v2Im8dHDS2QOS/3s1FBQN2fIyhjcAc2CCIW5Z89dTSoBYiEj8hYgpZfwi7708hxzE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=vR9rT1kO; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="vR9rT1kO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6EAA1C4CED1; Wed, 4 Dec 2024 05:52:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733291562; bh=6PH4CBuizRBwQhle5LobHoTfnjtbvPyw5NCKz/3TYD4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=vR9rT1kOjE0K0HJVhuntdO9rLvhDl4El72OFHK2KZrcXjKiVQkw3IZ8ebT26t/qjo hvBbw9lKOKXzvz6m2vrG7q5nmnRCq3g7wSGlU18VmvN6jlGZo3Va+6XBJOoYqg+7Gr 9be/SMlV5+sgkXmwqt0uiuzGQZtMHIGCCOI8S9EDS0Wl/3eoCo84cfmcff9XrZ4oRy VtCqvpPMCObkL+yeSRKXKXOFzUHdwEGg3Kz+xnbHe3/8pbAyiBKPmkMCdHS6jTDXhx ZR0o+vhl9909R9IK5489QgjldCAMcoetjFe20D7eAXNVHlabBLgdcGHTHmPH7b6zz+ 7f5nxVwi7kqcQ== Date: Tue, 3 Dec 2024 21:52:41 -0800 From: "Darrick J. Wong" To: Jens Axboe Cc: "Christoph Lameter (Ampere)" , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, hannes@cmpxchg.org, clm@meta.com, linux-kernel@vger.kernel.org, willy@infradead.org, kirill@shutemov.name, bfoster@redhat.com Subject: Re: [PATCHSET v6 0/12] Uncached buffered IO Message-ID: <20241204055241.GA7820@frogsfrogsfrogs> References: <20241203153232.92224-2-axboe@kernel.dk> <668f271f-dc44-49e1-b8dc-08e65e1fec23@kernel.dk> <36599cce-42ba-ddfb-656f-162548fdb300@gentwo.org> Precedence: bulk X-Mailing-List: linux-fsdevel@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: On Tue, Dec 03, 2024 at 03:41:53PM -0700, Jens Axboe wrote: > On 12/3/24 3:16 PM, Christoph Lameter (Ampere) wrote: > > On Tue, 3 Dec 2024, Jens Axboe wrote: > > > >> I actually did consider using some form of temporal, as it's the only > >> other name I liked. But I do think cached_uncached becomes pretty > >> unwieldy. Which is why I just stuck with uncached. Yes I know it means > >> different things in different circles, but probably mostly an overlap > >> with deeper technical things like that. An honestly almost impossible to > >> avoid overlap these days, everything has been used already :-) > >> > >> IOW, I think uncached is probably still the most descriptive thing out > >> there, even if I'm certainly open to entertaining other names. Just not > >> anything yet that has really resonated with me. > > > > How about calling this a "transitory" page? It means fleeting, not > > persistent and I think we have not used that term with a page/folio yet. > > I also hit the thesaurus ;-) > > I'm honestly not too worried about the internal name, as developers can > figure that out. It's more about presenting an external name that sys > developers will not need a lot of explaining to know what it's about. > And something that isn't too long. BRIEFLY_CACHED? TRANSIENT_CACHE? > > Dunno, I keep going back to uncached as it's pretty easy to grok! RWF_DONTCACHE, to match {I,DCACHE}_DONTCACHE ? ;) They sound pretty similar ("load this so I can do something with it, evict it immediately if possible") though I wouldn't rely on people outside the kernel being familiar with the existing dontcaches. --D > -- > Jens Axboe > >