linux-ext4 - Re: Ext4 devel interlock meeting minutes (October 1, 2007)

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Date:	Tue, 02 Oct 2007 11:24:41 +0200
From:	Valerie Clement <valerie.clement@...l.net>
To:	Avantika Mathur <mathur@...ux.vnet.ibm.com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: Ext4 devel interlock meeting minutes (October 1, 2007)

Avantika Mathur wrote:
> Multiple Block Allocation:
> - Main outstanding issue is still need for better documentation of the 
> code.
> - Aneesh has marked the places that need explanation with fixme, and 
> Alex will be adding the needed comments.  If this gets done quickly, we 
> can try to push this feature to 2.6.24
> - Aneesh has asked for recommendations for a benchmark to run which will 
> test the mballoc allocator.  Mingming suggested using dd and dbench, as 
> was done in the past for basic mballoc patches.  To test the in-core 
> preallocation, kernel untar tests.  Look at the file fragmentation after 
> running the test.

Currently, the mballoc feature is not compatible with the uninit_groups 
feature. I have just tried a simple test which failed. Isn't this a problem?

Another point that is not clear for me, is mballoc compatible with 
delalloc now, or is there still a restriction?

   Valérie

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