Re: [PATCH] mm: net: memcg accounting for TCP rx zerocopy

On Tue, Jan 12, 2021 at 4:12 PM Arjun Roy [off-list ref] wrote:

On Tue, Jan 12, 2021 at 3:48 PM Roman Gushchin [off-list ref] wrote:

quoted

[snip]

quoted

Historically we have a corresponding vmstat counter to each charged page.
It helps with finding accounting/stastistics issues: we can check that
memory.current ~= anon + file + sock + slab + percpu + stack.
It would be nice to preserve such ability.

Perhaps one option would be to have it count as a file page, or have a
new category.

Oh these are actually already accounted for in NR_FILE_MAPPED.