On Thu, Jul 01, 2021 at 05:56:50PM +0900, 권오훈 wrote:

On Thu, Jul 01, 2021 at 07:58:36AM +0200, gregkh@linuxfoundation.org wrote:

quoted

On Thu, Jul 01, 2021 at 02:06:44PM +0900, 권오훈 wrote:

quoted

We are using Cleancache APIs for our proprietary feature in Samsung.
As Wilcox mentioned, however, there is no cleancache backend in current kernel
mainline.
So if the race patch shall be accepted, then it seems unnecessary to patch 
previous stable kernels.

Meanwhile, I personally think cleancache API still has potential to be a good
material when used with new arising technologies such as pmem or NVMe.

So I suggest to postpone removing cleancache for a while.

 
If there are no in-kernel users, it needs to be removed.  If you rely on
this, wonderful, please submit your code as soon as possible.
 
thanks,
 
greg k-h

We will discuss internally and see if we can submit our feature.

You have two months.  I'll submit the removal then if no new backend has
shown up.