linux-kernel - Re: [PATCH] fs: add fincore(2) (mincore(2) for file descriptors)

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Message-ID: <alpine.DEB.1.00.1001280028160.2909@abydos.NerdBox.Net>
Date:	Thu, 28 Jan 2010 00:32:32 -0800 (PST)
From:	Steve VanDeBogart <vandebo-lkml@...dBox.Net>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Chris Frost <frost@...ucla.edu>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Benny Halevy <bhalevy@...asas.com>,
	linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fs: add fincore(2) (mincore(2) for file descriptors)

On Thu, 28 Jan 2010, Andrew Morton wrote:

> On Wed, 27 Jan 2010 23:42:35 -0800 (PST) Steve VanDeBogart <vandebo-lkml@...dBox.Net> wrote:
>
>>> Is it likely that these changes to SQLite and Gimp would be merged into
>>> the upstream applications?
>>
>> Changes to the GIMP fit nicely into the code structure, so it's feasible
>> to push this kind of optimization upstream.  The changes in SQLite are
>> a bit more focused on the benchmark, but a more general approach is not
>> conceptually difficult.  SQLite may not want the added complexity, but
>> other database may be interested in the performance improvement.
>>
>> Of course, these kernel changes are needed before any application can
>> optimize its IO as we did with libprefetch.
>
> That didn't really answer my question.
>
> If there's someone signed up and motivated to do the hard work of
> getting these changes integrated into the upstream applications then
> that makes us more interested.  If, however it was some weekend
> proof-of-concept hack which shortly dies an instadeath then...  meh,
> not so much.

Sorry I misunderstood.  The maintainer of GraphicsMagick has already
contacted us about making changes similar to our GIMP changes.  So yes,
there is interest in really using these changes.

--
Steve
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