On Fri, Jun 19, 2015 at 11:49:20AM +0800, Qu Wenruo wrote:
> Some unknown kernel bug makes inode nbytes modification out of sync with
> file extent update.
> 
> But it's quite easy to fix in btrfs-progs anyway.
> 
> So just fix it by adding a new function repair_inode_nbytes by using the
> found_size in inode_record.

Please provide a test, either a crafted image or extend the
corrupt-block utility to corrupt the nbytes value on the fly.
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