Re: [git pull] device mapper changes for 4.21

On 12/30/18 2:06 AM, Christoph Hellwig wrote:

On Thu, Dec 27, 2018 at 11:09:44AM -0500, Mike Snitzer wrote:

quoted

- 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