linux-ext4 - Re: [PATCH 4/4][e2fsprogs] New bitmap and inode table allocation for FLEX

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Date:	Sat, 3 Nov 2007 20:52:08 -0400
From:	Theodore Tso <tytso@....edu>
To:	"Jose R. Santos" <jrs@...ibm.com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [PATCH 4/4][e2fsprogs] New bitmap and inode table allocation
	for FLEX_BG

On Mon, Aug 13, 2007 at 11:33:14PM -0500, Jose R. Santos wrote:
> +	if (EXT2_HAS_INCOMPAT_FEATURE (fs->super, 
> +				       EXT4_FEATURE_INCOMPAT_FLEX_BG)) 
> +		ext2fs_allocate_flex_groups(fs);
> +	
> +	else {
> +		for (i = 0; i < fs->group_desc_count; i++) {
> +			retval = ext2fs_allocate_group_table(fs, i, fs->block_map);
> +			if (retval)
> +				return retval;
> +		}

The code to handle flex groups needs to be moved into
ext2fs_allocate_group_table(), and not put in
ext2fs_allocate_tables(), since resize2fs calls
ext2fs_allocate_group_table(), and we want resize2fs to do the right
thing for filesystems that have both the FLEX_BG and META_BG flags
set.  Speaking of which, we need to fix the kernel on-line resizing
code to allocate new blocks for filesystem metadata blocks using the
new placement algorithm for FLEX_BG && META_BG filesystems.

I'll fix this up for the 'pu' branch of e2fsprogs, as well as making
ext2fs_allocate_flex_groups static, but I'm not going to graduate this
to the 'next' branch just yet, since it needs a bit more testing,
specifically with resize2fs.

						- Ted
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