Re: Ask help for code review (was Re: [PATCH 03/14] bcache: add initial data structures for nvm pages)

On 6/23/21 6:05 PM, Coly Li wrote:

On 6/23/21 3:21 PM, Christoph Hellwig wrote:
Does the already mapped DAX base address change in runtime during memory
hot plugable ?
If not, it won't be a problem here for this specific use case.

quoted

It could change between one use and another.

Hmm, I don't understand the implicit meaning of the above line.
Could you please offer a detail example ?

Hi Christoph,

I feel I come to understand "It could change between
one use and another." Yes, this is a problem for full
pointer design. I will switch to base + offset format.

Thank you for joining the discussion and provide your
comments, to help me have improved understand for better
design :-）

Coly Li