[dm-devel] [git pull] device mapper changes for 4.21

[Jens Axboe]

On 12/30/18 2:06 AM, Christoph Hellwig wrote:
> On Thu, Dec 27, 2018 at 11:09:44AM -0500, Mike Snitzer wrote:
>> - Fix various DM targets to check for device sector overflow if
>>   CONFIG_LBDAF is not set.
> 
> Question to Jens and Linus:
> 
> is there any good reason to keep the CONFIG_LBDAF=n option around?
> Less than 2gig block devices seem to be an absolutele niche, and I
> wonder if it is still worth maintaining the special case just for that.

I'd be fine with removing it, I seriously doubt that the extended
math is going to be noticeable at all.

I'll try and run some null_blk testing as micro benchmarks when
I'm back in a few days.

-- 
Jens Axboe