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From: Alex Tomas <alex@clusterfs.com>
To: Christoph Hellwig <hch@infradead.org>,
	Jeff Garzik <jeff@garzik.org>, Alex Tomas <alex@clusterfs.com>,
	ext4 development <linux-ext4@vger.kernel.org>,
	linux-fsdevel@vger.kernel.org
Subject: Re: [RFC] basic delayed allocation in VFS
Date: Sun, 29 Jul 2007 21:48:10 +0400	[thread overview]
Message-ID: <46ACD2DA.20101@clusterfs.com> (raw)
In-Reply-To: <20070729173035.GU5992@schatzie.adilger.int>

Andreas Dilger wrote:
> Sigh, we HAVE a patch that was only adding delalloc to ext4, but it
> was rejected because "that functionality should go into the VFS".
> Since the performance improvement of delalloc is quite large, we'd
> like to get this into the kernel one way or another.  Can we make a
> decision if the ext4-specific delalloc is acceptable?

I think the latter one is better because it supports bs < pagesize
(though I'm not sure about data=ordered yet). I'm not against putting
most of the patch into fs/ext4/, but at least few bits to be changed
in fs/ - exports in  fs/mpage.c and one "if" in __block_write_full_page().

thanks, Alex


  reply	other threads:[~2007-07-29 17:48 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 [this message]
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

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