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Re: [dm-devel] [PATCH] dm: Don't install merge function if not needed



On Tue, Jun 21, 2011 at 04:08:52PM -0400, Mikulas Patocka wrote:
> possible, because the merge function must be obeyed.

The merge function is only a hint, albeit a strong hint - not a hard
requirement.  (Otherwise we're back to the ideas of block-layer
reservations/cancellations and limitations on suspend which we didn't
want to implement.)

If you are still seeing a problem with md in this respect, please could
you post the details for us to discuss?

Alasdair


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