Re: [PATCH][RFC] fast file mapping for loop

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To: Jens Axboe <jens.axboe@...>
Cc: <linux-kernel@...>, <linux-fsdevel@...>, Mikulas Patocka <mikulas@...>, Bryn M. Reeves <breeves@...>
Date: Thursday, January 10, 2008 - 8:47 am

On Thu, 10 Jan 2008 09:31:31 +0100
Jens Axboe <jens.axboe@oracle.com> wrote:


I don't quite get how the dm version is reinventing things.  They use
the dmsetup command that they use for everything else and provide a
small and fairly clean module for bio specific loop instead of piling
it onto loop.c....

Their code doesn't have the fancy hole handling that yours does, but
neither did yours 4 days ago ;)


It is a natural fit in either place, as both loop and dm have a good
infrastructure for it.  I'm not picky about where it ends up, but dm
wouldn't be a bad place.

-chris
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Messages in current thread:
[PATCH][RFC] fast file mapping for loop, Jens Axboe, (Wed Jan 9, 4:52 am)
Re: [PATCH][RFC] fast file mapping for loop, Chris Mason, (Mon Jan 14, 1:10 pm)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Mon Jan 14, 1:54 pm)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Tue Jan 15, 5:25 am)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Tue Jan 15, 5:36 am)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Tue Jan 15, 6:07 am)
Re: [PATCH][RFC] fast file mapping for loop, Chris Mason, (Tue Jan 15, 10:04 am)
Re: [PATCH][RFC] fast file mapping for loop, Daniel Phillips, (Fri Jan 11, 2:17 pm)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Fri Jan 11, 2:23 pm)
Re: [PATCH][RFC] fast file mapping for loop, Andi Kleen, (Wed Jan 9, 11:34 am)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Thu Jan 10, 4:43 am)
Re: [PATCH][RFC] fast file mapping for loop, Bill Davidsen, (Thu Jan 10, 9:25 pm)
Re: [PATCH][RFC] fast file mapping for loop, Nick Piggin, (Wed Jan 9, 9:42 pm)
Re: [PATCH][RFC] fast file mapping for loop, Christoph Hellwig, (Thu Jan 10, 4:37 am)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Thu Jan 10, 4:44 am)
Re: [PATCH][RFC] fast file mapping for loop, Christoph Hellwig, (Thu Jan 10, 4:54 am)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Thu Jan 10, 5:01 am)
Re: [PATCH][RFC] fast file mapping for loop, Chris Mason, (Thu Jan 10, 8:53 am)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Thu Jan 10, 9:03 am)
Re: [PATCH][RFC] fast file mapping for loop, Chris Mason, (Thu Jan 10, 9:46 am)
Re: [PATCH][RFC] fast file mapping for loop, Peter Zijlstra, (Thu Jan 10, 5:37 am)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Thu Jan 10, 5:49 am)
Re: [PATCH][RFC] fast file mapping for loop, Peter Zijlstra, (Thu Jan 10, 5:52 am)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Thu Jan 10, 6:02 am)
Re: [PATCH][RFC] fast file mapping for loop, Peter Zijlstra, (Thu Jan 10, 6:20 am)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Thu Jan 10, 4:34 am)
Re: [PATCH][RFC] fast file mapping for loop, Alasdair G Kergon, (Wed Jan 9, 7:16 pm)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Thu Jan 10, 4:31 am)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Thu Jan 10, 4:42 am)
Re: [PATCH][RFC] fast file mapping for loop, Mikulas Patocka, (Fri Jan 11, 3:39 am)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Fri Jan 11, 3:58 am)
Re: [PATCH][RFC] fast file mapping for loop, Chris Mason, (Thu Jan 10, 8:47 am)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Thu Jan 10, 8:57 am)
Re: [PATCH][RFC] fast file mapping for loop, Christoph Hellwig, (Wed Jan 9, 5:31 am)
Re: [PATCH][RFC] fast file mapping for loop, Jens Axboe, (Wed Jan 9, 5:43 am)
Re: [PATCH][RFC] fast file mapping for loop, Chris Mason, (Wed Jan 9, 7:00 am)