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Date: Thu, 9 Apr 2020 10:33:19 +0200 From: Christian Brauner <christian.brauner@...ntu.com> To: Christoph Hellwig <hch@...radead.org> Cc: Jens Axboe <axboe@...nel.dk>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, linux-kernel@...r.kernel.org, linux-block@...r.kernel.org, linux-api@...r.kernel.org, Jonathan Corbet <corbet@....net>, Serge Hallyn <serge@...lyn.com>, "Rafael J. Wysocki" <rafael@...nel.org>, Tejun Heo <tj@...nel.org>, "David S. Miller" <davem@...emloft.net>, Saravana Kannan <saravanak@...gle.com>, Jan Kara <jack@...e.cz>, David Howells <dhowells@...hat.com>, Seth Forshee <seth.forshee@...onical.com>, David Rheinsberg <david.rheinsberg@...il.com>, Tom Gundersen <teg@...m.no>, Christian Kellner <ckellner@...hat.com>, Dmitry Vyukov <dvyukov@...gle.com>, Stéphane Graber <stgraber@...ntu.com>, linux-doc@...r.kernel.org, netdev@...r.kernel.org Subject: Re: [PATCH 2/8] loopfs: implement loopfs On Thu, Apr 09, 2020 at 12:53:20AM -0700, Christoph Hellwig wrote: > Almost 600 lines of code for a little bit of fine grained control > is the wrong tradeoff. Please find a cheaper way to do this. I think that's a slight misrepresentation of the patchset. Of course, I get reservations against adding new code but none of this code will exist at all if the config option is not set; and the config option is not selected by default. I don't want people to have to use something they don't care about of course. The patchset itself unblocks a range of use-cases we had issues with for quite a while and the standalone, tiny filesystem approach has served us well already, so this is not something new. It's not just gaining fine-grained control, it's a whole set of new uses and we don't just do it for the fun of doing it but because we do have actual users of this. Christian
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