linux-ext4 - Re: [PATCH -V4 1/2] ext4: Use EXT4_GROUP_INFO_NEED_INIT

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Message-ID: <20081125192734.GA26883@skywalker>
Date:	Wed, 26 Nov 2008 00:57:34 +0530
From:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	cmm@...ibm.com, tytso@....edu, sandeen@...hat.com
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [PATCH -V4 1/2] ext4: Use EXT4_GROUP_INFO_NEED_INIT_BIT during
	resize

On Wed, Nov 26, 2008 at 12:55:44AM +0530, Aneesh Kumar K.V wrote:
> The new groups added during resize are flagged as
> need_init group. Make sure we properly initialize these
> groups. When we have block size < page size and we are adding
> new groups the page may still be marked uptodate even though
> we haven't initialized the group. While forcing the init
> of buddy cache we need to make sure other groups part of the
> same page of buddy cache is not using the cache.
> group_info->alloc_sem is added to ensure the same.
> 
> FILENAME: aneesh-3-use_EXT4_GROUP_INFO_NEED_INIT_BIT-during-resize
> 

The two patches only have comments updated after a really nice irc
discussion with Alex.

-aneesh
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