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Go Back   Linux Archive > Redhat > Device-mapper Development

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Old 04-30-2012, 04:10 PM
Alasdair G Kergon
Default dm: update max_io_len to support a split_io that is not a power of 2

On Sat, Apr 28, 2012 at 12:44:28AM -0400, Mike Snitzer wrote:
> Required to support a target's use of a non power of 2 blocksize.

For which targets?
(merge_bvec supported?)

> + boundary = ti->split_io - do_div(tmp, ti->split_io);


What about 32-bit arch + LBD + large split_io (from raid?)
- Is a 32-bit restriction on split_io unreasonable nowadays?
- OR reasonable on 32bit/LBD?
- OR fallback to old code there?


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