+ powerpc-pseries-cmm-adjust-balloon_migrate-when-migrating-pages.patch added to mm-new branch

+ powerpc-pseries-cmm-adjust-balloon_migrate-when-migrating-pages.patch added to mm-new branch

[Andrew Morton]

The patch titled
     Subject: powerpc/pseries/cmm: adjust BALLOON_MIGRATE when migrating pages
has been added to the -mm mm-new branch.  Its filename is
     powerpc-pseries-cmm-adjust-balloon_migrate-when-migrating-pages.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/powerpc-pseries-cmm-adjust-balloon_migrate-when-migrating-pages.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews.  Please do not hesitate to respond to
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fixup patches in mm-new.

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------------------------------------------------------
From: David Hildenbrand <david@redhat.com>
Subject: powerpc/pseries/cmm: adjust BALLOON_MIGRATE when migrating pages
Date: Tue, 21 Oct 2025 12:06:06 +0200

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.

This was found by code inspection.

Link: https://lkml.kernel.org/r/20251021100606.148294-3-david@redhat.com
Fixes: fe030c9b85e6 ("powerpc/pseries/cmm: Implement balloon compaction")
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/powerpc/platforms/pseries/cmm.c |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/powerpc/platforms/pseries/cmm.c~powerpc-pseries-cmm-adjust-balloon_migrate-when-migrating-pages
+++ a/arch/powerpc/platforms/pseries/cmm.c
@@ -532,6 +532,7 @@ static int cmm_migratepage(struct balloo
 
 	spin_lock_irqsave(&b_dev_info->pages_lock, flags);
 	balloon_page_insert(b_dev_info, newpage);
+	__count_vm_event(BALLOON_MIGRATE);
 	b_dev_info->isolated_pages--;
 	spin_unlock_irqrestore(&b_dev_info->pages_lock, flags);
 
_

Patches currently in -mm which might be from david@redhat.com are

powerpc-pseries-cmm-call-balloon_devinfo_init-also-without-config_balloon_compaction.patch
powerpc-pseries-cmm-adjust-balloon_migrate-when-migrating-pages.patch