Re: [PATCH -next] memcg: move mem_cgroup_swappiness to memcontrol.h

Johannes Weiner <[email protected]>
Newsgroups org.kernel.vger.cgroups,org.kernel.vger.linux-kernel,org.kvack.linux-mm
Message-ID <[email protected]> 
On Fri, Jul 10, 2026 at 07:12:24PM +0800, Ridong wrote:
> From: Ridong Chen <[email protected]>
> 
> The per-memcg swappiness knob is v1-only; v2 always uses global
> vm_swappiness and ignores the per-cgroup field.
> 
> Guard memcg->swappiness with CONFIG_MEMCG_V1, and move the helper
> to memcontrol.h where it belongs.
> 
> No functional change for v1; v2-only kernels drop the unused field.
> 
> Signed-off-by: Ridong Chen <[email protected]>

Nice.

Acked-by: Johannes Weiner <[email protected]>
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