Re: [PATCH 00/19 V2] mm: memcontrol: charge swapin pages on instantiation

[Balbir Singh]

On 13/5/20 10:35 pm, Johannes Weiner wrote:
> As a result, the memcg gets a breakdown for memory.stat without having
> to have private knowledge of what a page cache page is - how to test
> it, when it's safe to test it, whether there can be huge pages in the
> page cache, etc. pp. Memcg can focus on counting bytes, and the VM
> code that is specialized in dealing with the page cache (or anon
> pages, or shmem pages) can fill in those kinds of details for us.
> 
> Less dependencies, less duplication, simpler API rules.
> 
> The memory.stat output is the same, it's just much simpler code.

Makes sense! Thanks, I should spend some time to re-read all of the memcontrol.c code :)

Balbir Singh.