From mboxrd@z Thu Jan  1 00:00:00 1970
From: Theodore Ts'o <tytso@mit.edu>
Subject: Re: [PATCH] Ext4: remove a useless check for the function
 ext4_data_block_valid
Date: Sat, 26 Jan 2013 10:38:26 -0500
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Cc: linux-ext4@vger.kernel.org
To: Wang Shilong <wangshilong1991@gmail.com>
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On Sat, Jan 26, 2013 at 02:57:59PM -0800, Wang Shilong wrote:
> From: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
> 
> Because it is no doubt 'start_blk + count < start_blk' always comes to
> false. It is useless to have this check,remove it.

Actually, it can be true --- if start_blk + count (which are both
unsigned integers) overflows....

					- Ted