Re: [PATCH v9 6/9] secretmem: add memcg accounting

On Tue, Nov 17, 2020 at 11:49 AM Roman Gushchin [off-list ref] wrote:

On Tue, Nov 17, 2020 at 06:29:29PM +0200, Mike Rapoport wrote:

quoted

From: Mike Rapoport <redacted>

Account memory consumed by secretmem to memcg. The accounting is updated
when the memory is actually allocated and freed.

Signed-off-by: Mike Rapoport <redacted>

[snip]

quoted

+static int secretmem_account_pages(struct page *page, gfp_t gfp, int order)
+{
+     int err;
+
+     err = memcg_kmem_charge_page(page, gfp, order);

I haven't looked at the whole series but it seems like these pages
will be mapped into the userspace, so this patch has dependency on
Roman's "mm: allow mapping
accounted kernel pages to userspace" patch series.