[dm-devel] [PATCH v3 3/6] block: use lcm_not_zero() when stacking chunk_sectors

[Martin K. Petersen]

Mike,

> Like 'io_opt', blk_stack_limits() should stack 'chunk_sectors' using
> lcm_not_zero() rather than min_not_zero() -- otherwise the final
> 'chunk_sectors' could result in sub-optimal alignment of IO to
> component devices in the IO stack.
>
> Also, if 'chunk_sectors' isn't a multiple of 'physical_block_size'
> then it is a bug in the driver and the device should be flagged as
> 'misaligned'.

Looks good.

Reviewed-by: Martin K. Petersen <martin.petersen at oracle.com>

-- 
Martin K. Petersen	Oracle Linux Engineering