linux-kernel - Re: [PATCH v1 2/2] powerpc/pseries/cmm: adjust BALLOON

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Message-ID: <87v7iumpov.ritesh.list@gmail.com>
Date: Fri, 28 Nov 2025 15:42:00 +0530
From: Ritesh Harjani (IBM) <ritesh.list@...il.com>
To: David Hildenbrand <david@...hat.com>, linux-kernel@...r.kernel.org
Cc: linux-mm@...ck.org, linuxppc-dev@...ts.ozlabs.org, David Hildenbrand <david@...hat.com>, Andrew Morton <akpm@...ux-foundation.org>, Madhavan Srinivasan <maddy@...ux.ibm.com>, Michael Ellerman <mpe@...erman.id.au>, Nicholas Piggin <npiggin@...il.com>, Christophe Leroy <christophe.leroy@...roup.eu>, stable@...r.kernel.org
Subject: Re: [PATCH v1 2/2] powerpc/pseries/cmm: adjust BALLOON_MIGRATE when migrating pages

David Hildenbrand <david@...hat.com> writes:

> Let's properly adjust BALLOON_MIGRATE like the other drivers.
>
> Note that the INFLATE/DEFLATE events are triggered from the core when
> enqueueing/dequeueing pages.
>
> Not completely sure whether really is stable material, but the fix is
> trivial so let's just CC stable.
>
> This was found by code inspection.
>
> Fixes: fe030c9b85e6 ("powerpc/pseries/cmm: Implement balloon compaction")
> Cc: <stable@...r.kernel.org>
> Signed-off-by: David Hildenbrand <david@...hat.com>
> ---
>  arch/powerpc/platforms/pseries/cmm.c | 1 +
>  1 file changed, 1 insertion(+)

Make sense to add vmstat counter for BALLOON_MIGRATE as well.
The changes looks good to me. Please feel free to add:

Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@...il.com>