linux-kernel - Re: [RFC][PATCH 1/2] Add a super operation for writeback

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Message-ID: <20140603033940.GB14410@dastard>
Date:	Tue, 3 Jun 2014 13:39:40 +1000
From:	Dave Chinner <david@...morbit.com>
To:	Christian Stroetmann <stroetmann@...olinux.com>
Cc:	Daniel Phillips <daniel@...nq.net>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Linux FS Devel <linux-fsdevel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
Subject: Re: [RFC][PATCH 1/2] Add a super operation for writeback

On Mon, Jun 02, 2014 at 10:30:07AM +0200, Christian Stroetmann wrote:
> When I followed the advice of Dave Chinner:
> "We're not going to merge that page forking stuff (like you were
> told at LSF 2013 more than a year ago:
> http://lwn.net/Articles/548091/) without rigorous design review and
> a demonstration of the solutions to all the hard corner cases it
> has"
> given in his e-mail related with the presentation of the latest
> version of the Tux3 file system (see [1]) and read the linked
> article, I found in the second comments:
> "Parts of this almost sound like it either a.) overlaps with or b.)
> would benefit greatly from something similar to Featherstitch
> [[2]]."
> 
> Could it be that we have with Featherstitch a general solution
> already that is said to be even "file system agnostic"?
> Honestly, I thought that something like this would make its way into
> the Linux code base.

Here's what I said about the last proposal (a few months ago) for
integrating featherstitch into the kernel:

http://www.spinics.net/lists/linux-fsdevel/msg72799.html

It's not a viable solution.

Cheers,

Dave.
-- 
Dave Chinner
david@...morbit.com
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