Re: Wrong DIF guard tag on ext2 write

[Dave Chinner]

On Fri, Jul 23, 2010 at 11:16:33PM +0400, Vladislav Bolkhovitin wrote:
> It would be great if you prove or disprove our suspicions that Linux
> can produce several write requests for the same blocks
> simultaneously. To be sure we need:

Just use direct IO. Case in point is the concurrent sub-block
AIO-DIO data corruption we're chasing on XFS and ext4 at the moment
where we have two concurrent unaligned write IOs to the same
filesystem block:

http://oss.sgi.com/archives/xfs/2010-07/msg00278.html

Cheers,

Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx
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