linux-ext4 - Re: + ext4-rename-logic_sb_block.patch added to -mm tree

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Message-ID: <20061006060757.GI22010@schatzie.adilger.int>
Date:	Fri, 6 Oct 2006 00:07:57 -0600
From:	Andreas Dilger <adilger@...sterfs.com>
To:	akpm@...l.org
Cc:	linux-ext4@...r.kernel.org
Subject: Re: + ext4-rename-logic_sb_block.patch added to -mm tree

On Oct 05, 2006  20:06 -0700, akpm@...l.org wrote:
> Subject: ext4: rename logic_sb_block
> From: Andrew Morton <akpm@...l.org>
> 
> I assume this means "logical sb block".  So call it that.
> 
> I still don't understand the name though.  A block is a block.  What's
> different about this one?

The ext3 superblock is at a 1kB offset from the start of the device.
For 1kB blocksize filesystems this is at block 1, while for 2kB+ blocksize
filesystems this is block 0 + 1024 bytes...

Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.

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