linux-ext4 - Re: [RFC] basic delayed allocation in VFS

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Date:	Thu, 26 Jul 2007 17:33:08 +0400
From:	Alex Tomas <alex@...sterfs.com>
To:	Jeff Garzik <jeff@...zik.org>
CC:	ext4 development <linux-ext4@...r.kernel.org>,
	linux-fsdevel@...r.kernel.org,
	Christoph Hellwig <hch@...radead.org>
Subject: Re: [RFC] basic delayed allocation in VFS

It duplicates fs/mpage.c in bio building and introduces new generic API
(iomap, map_blocks_t, etc). In contrast, my trivial implementation re-use
existing code in fs/mpage.c, doesn't introduce new API and I tend to think
provides quite the same functionality. I can be wrong, of course ...

thanks, Alex

Jeff Garzik wrote:
> The XFS one is proven and the work was already completed.
> 
> What were the specific technical issues that made it unsuitable for ext4?
> 
> I would rather not reinvent the wheel, particularly if the reinvention 
> is less capable than the existing work.
> 
>     Jeff
> 
> 


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