On Thu, Oct 01, 2020 at 01:51:43PM -0700, Roman Gushchin wrote:
> On Thu, Oct 01, 2020 at 02:59:50PM -0400, Johannes Weiner wrote:
> > On Thu, Oct 01, 2020 at 11:27:39AM -0700, Roman Gushchin wrote:
> > > On Thu, Oct 01, 2020 at 09:46:38AM -0400, Johannes Weiner wrote:
> > > > On Wed, Sep 30, 2020
On Thu, Oct 01, 2020 at 02:59:50PM -0400, Johannes Weiner wrote:
> On Thu, Oct 01, 2020 at 11:27:39AM -0700, Roman Gushchin wrote:
> > On Thu, Oct 01, 2020 at 09:46:38AM -0400, Johannes Weiner wrote:
> > > On Wed, Sep 30, 2020 at 05:27:07PM -0700, Roman Gushchin wrote:
> > > > +/*
> > > > + *
On Thu, Oct 01, 2020 at 11:27:39AM -0700, Roman Gushchin wrote:
> On Thu, Oct 01, 2020 at 09:46:38AM -0400, Johannes Weiner wrote:
> > On Wed, Sep 30, 2020 at 05:27:07PM -0700, Roman Gushchin wrote:
> > > +/*
> > > + * set_page_memcg - associate a page with a memory cgroup
> > > + * @page: a
On Thu, Oct 01, 2020 at 09:46:38AM -0400, Johannes Weiner wrote:
> On Wed, Sep 30, 2020 at 05:27:07PM -0700, Roman Gushchin wrote:
> > +/*
> > + * set_page_memcg - associate a page with a memory cgroup
> > + * @page: a pointer to the page struct
> > + * @memcg: a pointer to the memory cgroup
> > +
On Wed, Sep 30, 2020 at 05:27:07PM -0700, Roman Gushchin wrote:
> +/*
> + * set_page_memcg - associate a page with a memory cgroup
> + * @page: a pointer to the page struct
> + * @memcg: a pointer to the memory cgroup
> + *
> + * Associates a page with a memory cgroup.
> + */
> +static inline void
Currently there are many open-coded reads and writes of the
page->mem_cgroup pointer, as well as a couple of read helpers,
which are barely used.
It creates an obstacle on a way to reuse some bits of the pointer
for storing additional bits of information. In fact, we already do
this for slab
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