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From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: Alex Tomas <alex@clusterfs.com>
Cc: ext4 development <linux-ext4@vger.kernel.org>,
	linux-fsdevel@vger.kernel.org
Subject: Re: [RFC] basic delayed allocation in VFS
Date: Thu, 26 Jul 2007 17:17:27 +0530	[thread overview]
Message-ID: <46A889CF.3030101@linux.vnet.ibm.com> (raw)
In-Reply-To: <46A8628D.6070103@clusterfs.com>



Alex Tomas wrote:
> Good day,
> 
> please review ...
> 
> thanks, Alex
> 
> 
> basic delayed allocation in VFS:
> 
>  * block_prepare_write() can be passed special ->get_block() which
>    doesn't allocate blocks, but reserve them and mark bh delayed
>  * a filesystem can use mpage_da_writepages() with other ->get_block()
>    which doesn't defer allocation. mpage_da_writepages() finds all
>    non-allocated blocks and try to allocate them with minimal calls
>    to ->get_block(), then submit IO using __mpage_writepage()
> 

I missed this patch when looking at the ext4 patches. Can we mark related
patch as [ PATCH 1/2 ] so that we know that another patch is going to follow.

-aneesh

      parent reply	other threads:[~2007-07-26 11:47 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-07-26  8:59 [RFC] basic delayed allocation in VFS Alex Tomas
2007-07-26 10:32 ` Jeff Garzik
2007-07-26 10:35   ` Alex Tomas
2007-07-26 12:05     ` Jeff Garzik
2007-07-26 13:33       ` Alex Tomas
2007-07-27  5:07         ` David Chinner
2007-07-27  7:51           ` Alex Tomas
2007-07-27 12:33             ` Jeff Garzik
2007-07-27 12:42               ` Alex Tomas
2007-07-28 19:56             ` Christoph Hellwig
2007-07-29  9:18             ` David Chinner
2007-07-29 12:09               ` Alex Tomas
2007-07-30  0:29                 ` David Chinner
2007-07-27 12:38           ` Alex Tomas
2007-07-28 19:57             ` Christoph Hellwig
2007-07-28 19:53           ` Christoph Hellwig
2007-07-28 19:51   ` Christoph Hellwig
2007-07-28 19:56     ` Alex Tomas
2007-07-29 17:30     ` Andreas Dilger
2007-07-29 17:48       ` Alex Tomas
2007-07-29 19:22         ` Christoph Hellwig
2007-07-29 19:24       ` Christoph Hellwig
2007-07-29 19:51         ` Alex Tomas
2007-07-30  0:28         ` Theodore Tso
2007-07-30 17:49         ` Mingming Cao
2007-07-30 19:43           ` Andrew Morton
2007-07-26 11:47 ` Aneesh Kumar K.V [this message]

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