From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BD3DD3C0081; Thu, 15 Jan 2026 17:35:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768498554; cv=none; b=neKNgECqUAvqV0jbC8q6aRox9TrgqvAt+NRF+1H4J1cp5twY3deA9JbX2C9wnQxo+mXkbPcR/KxTDdnfC4jlnr9jTFWnZr6nCuKB35dRaYIZW+kiobw9K7be2PDbQlDLXlUtXmK+6U4ota82UAaG/rgAQpBFh/812vVyWn59u0U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768498554; c=relaxed/simple; bh=PEkeuY4UXTXErZLVTaFaAfzxQmfZXGJVvVXD9t3un4Q=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ax68TR7h3r2aQAuiRReZ1Zaj/JNqZXNSp98vVoVGEfZELUXfFJPQhOuTv7od78gbmtxzXxZQEU+Lr5JOb9ubZaNu7fUCJfyQK2aPMRj3sKgrYAI1DE2IjA3VmTQji2D2lI4oybj+ShvVMCuvJamwVYpzXn1JVDsNk5Nm3359YpA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=IMZoJDx9; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="IMZoJDx9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 15DDFC116D0; Thu, 15 Jan 2026 17:35:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1768498554; bh=PEkeuY4UXTXErZLVTaFaAfzxQmfZXGJVvVXD9t3un4Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IMZoJDx98KpSNdLeubPBw96jAhFiuXf4H2RAU+W5944pN3MZtBrCWkmEV7byCd7nB EpMnq8YwUPW8O08xEXCdk3XLPrnoJfIWdONZeyxVRo7qASxUmRnpKk24OmgGm+TBGj 8awcFyDpODQVQlyZZtFxiJGdn08z8MlD2evAEeSE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, David Hildenbrand , "Ritesh Harjani (IBM)" , Christophe Leroy , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Andrew Morton , Sasha Levin Subject: [PATCH 5.15 473/554] powerpc/pseries/cmm: adjust BALLOON_MIGRATE when migrating pages Date: Thu, 15 Jan 2026 17:48:59 +0100 Message-ID: <20260115164303.420492419@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260115164246.225995385@linuxfoundation.org> References: <20260115164246.225995385@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Hildenbrand [ Upstream commit 0da2ba35c0d532ca0fe7af698b17d74c4d084b9a ] 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 Reviewed-by: Ritesh Harjani (IBM) Cc: Christophe Leroy Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Signed-off-by: Andrew Morton Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- arch/powerpc/platforms/pseries/cmm.c | 1 + 1 file changed, 1 insertion(+) --- a/arch/powerpc/platforms/pseries/cmm.c +++ b/arch/powerpc/platforms/pseries/cmm.c @@ -550,6 +550,7 @@ 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);