Re: [PATCH v1 2/6] fs: use on-stack-bio if backing device has BDI_CAP_SYNC capability

[Jens Axboe]

On 08/14/2017 09:31 AM, Minchan Kim wrote:
>> Secondly, generally you don't have slow devices and fast devices
>> intermingled when running workloads. That's the rare case.
> 
> Not true. zRam is really popular swap for embedded devices where
> one of low cost product has a really poor slow nand compared to
> lz4/lzo [de]comression.

I guess that's true for some cases. But as I said earlier, the recycling
really doesn't care about this at all. They can happily coexist, and not
step on each others toes.

-- 
Jens Axboe