From nobody Tue Feb 10 03:00:12 2026 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 7EA4833ADA4; Thu, 15 Jan 2026 09:22:35 +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=1768468955; cv=none; b=JxN4BhRhJNWH72P/ivXErV2XchRdhe1L65VTSG5UTmD39+Kh8GVTnSN43KTyjQFdrOi6qW+FhCiHfRe0GqBgRwI1gzoo9PE/9FGcI7p0A4QH4MpCtkDSFh4dVWRkKwmTUoOO7mTqn07Ftya2W2MLGmH9JnCFrB/2xdhC7zERflc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768468955; c=relaxed/simple; bh=orOF2wsFt94hkjmk1N2Zd+ddx/S2GWQX029b6WMD7uQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HbeqFNkcmtn4PmalQH86aGpA1etoKNmHIkog5CpylTzRMuYc2ugho4yx7MgK1Jxjbe/5yAjNy0+xQt6foXO8YFG3w+G4ihQoHYLPcJfX15z88TR/iCOf0N96i7UU+pUbOPubTKxq7jBrs7ys2KC0TLiHwLq4L1J580+sKeidqj0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LRbgYqDO; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LRbgYqDO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AFDB7C19421; Thu, 15 Jan 2026 09:22:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768468955; bh=orOF2wsFt94hkjmk1N2Zd+ddx/S2GWQX029b6WMD7uQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LRbgYqDO+Qlb0LQafvw3c7vh6olSFHEWpoVPHnglqGVWBWAvL6mio/t/6X16ULSXK FSOblh+jDXnKh4C21qvqKUxPVOFHkhrB804ixHZYBEzqqUCCKLU63box7Drii9Un6t jovNzGAFhwi3NhW7Bqk4cxUabQQtqppyf5fuzet0HoMCxuknRd5nLZ5jZ6TbVXXiIi F3EELF8IAdsQvaP/N6b0fH1YwhSMNWwkqztLygRrxQc5vqpkuybT1skrhq8qIocapn 56+HuY0+BBbYByKJinvqL6U5mfk1Vmrjy2M+8qE3msi6/8SePi9VT1tL6En/qA+NOz jVAzQzpa5cGGA== From: "David Hildenbrand (Red Hat)" To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, Broadcom internal kernel review list , linux-doc@vger.kernel.org, virtualization@lists.linux.dev, "David Hildenbrand (Red Hat)" , Andrew Morton , Oscar Salvador , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jonathan Corbet , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Arnd Bergmann , Greg Kroah-Hartman , Jerrin Shaji George , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?UTF-8?q?Eugenio=20P=C3=A9rez?= , Zi Yan Subject: [PATCH v2 19/23] mm: rename balloon_compaction.(c|h) to balloon.(c|h) Date: Thu, 15 Jan 2026 10:20:09 +0100 Message-ID: <20260115092015.3928975-20-david@kernel.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260115092015.3928975-1-david@kernel.org> References: <20260115092015.3928975-1-david@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Even without CONFIG_BALLOON_COMPACTION this infrastructure implements basic list and page management for a memory balloon. Signed-off-by: David Hildenbrand (Red Hat) Reviewed-by: Lorenzo Stoakes --- Documentation/core-api/mm-api.rst | 2 +- MAINTAINERS | 4 ++-- arch/powerpc/platforms/pseries/cmm.c | 2 +- drivers/misc/vmw_balloon.c | 2 +- drivers/virtio/virtio_balloon.c | 2 +- include/linux/{balloon_compaction.h =3D> balloon.h} | 11 +++++------ mm/Makefile | 2 +- mm/{balloon_compaction.c =3D> balloon.c} | 7 +++---- 8 files changed, 15 insertions(+), 17 deletions(-) rename include/linux/{balloon_compaction.h =3D> balloon.h} (92%) rename mm/{balloon_compaction.c =3D> balloon.c} (98%) diff --git a/Documentation/core-api/mm-api.rst b/Documentation/core-api/mm-= api.rst index 68193a4cfcf52..aabdd3cba58e8 100644 --- a/Documentation/core-api/mm-api.rst +++ b/Documentation/core-api/mm-api.rst @@ -130,5 +130,5 @@ More Memory Management Functions .. kernel-doc:: mm/vmscan.c .. kernel-doc:: mm/memory_hotplug.c .. kernel-doc:: mm/mmu_notifier.c -.. kernel-doc:: mm/balloon_compaction.c +.. kernel-doc:: mm/balloon.c .. kernel-doc:: mm/huge_memory.c diff --git a/MAINTAINERS b/MAINTAINERS index 0d044a58cbfe0..de8f89ca1149f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -27536,9 +27536,9 @@ M: David Hildenbrand L: virtualization@lists.linux.dev S: Maintained F: drivers/virtio/virtio_balloon.c -F: include/linux/balloon_compaction.h +F: include/linux/balloon.h F: include/uapi/linux/virtio_balloon.h -F: mm/balloon_compaction.c +F: mm/balloon.c =20 VIRTIO BLOCK AND SCSI DRIVERS M: "Michael S. Tsirkin" diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/= pseries/cmm.c index 7fd8b3d7e7637..7a3c4922685ab 100644 --- a/arch/powerpc/platforms/pseries/cmm.c +++ b/arch/powerpc/platforms/pseries/cmm.c @@ -19,7 +19,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c index 53e9335b6718c..7fd3f709108c2 100644 --- a/drivers/misc/vmw_balloon.c +++ b/drivers/misc/vmw_balloon.c @@ -29,7 +29,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloo= n.c index 6ae00de78b61b..de8041c3285a1 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -13,7 +13,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/include/linux/balloon_compaction.h b/include/linux/balloon.h similarity index 92% rename from include/linux/balloon_compaction.h rename to include/linux/balloon.h index 7757e0e314fdb..82585542300d6 100644 --- a/include/linux/balloon_compaction.h +++ b/include/linux/balloon.h @@ -1,8 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* - * include/linux/balloon_compaction.h - * - * Common interface definitions for making balloon pages movable by compac= tion. + * Common interface for implementing a memory balloon, including support + * for migration of pages inflated in a memory balloon. * * Balloon page migration makes use of the general "movable_ops page migra= tion" * feature. @@ -35,8 +34,8 @@ * * Copyright (C) 2012, Red Hat, Inc. Rafael Aquini */ -#ifndef _LINUX_BALLOON_COMPACTION_H -#define _LINUX_BALLOON_COMPACTION_H +#ifndef _LINUX_BALLOON_H +#define _LINUX_BALLOON_H #include #include #include @@ -75,4 +74,4 @@ static inline void balloon_devinfo_init(struct balloon_de= v_info *balloon) balloon->migratepage =3D NULL; balloon->adjust_managed_page_count =3D false; } -#endif /* _LINUX_BALLOON_COMPACTION_H */ +#endif /* _LINUX_BALLOON_H */ diff --git a/mm/Makefile b/mm/Makefile index 9175f8cc65658..1e31e0a528dc1 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -122,7 +122,7 @@ obj-$(CONFIG_CMA) +=3D cma.o obj-$(CONFIG_NUMA) +=3D numa.o obj-$(CONFIG_NUMA_MEMBLKS) +=3D numa_memblks.o obj-$(CONFIG_NUMA_EMU) +=3D numa_emulation.o -obj-$(CONFIG_MEMORY_BALLOON) +=3D balloon_compaction.o +obj-$(CONFIG_MEMORY_BALLOON) +=3D balloon.o obj-$(CONFIG_PAGE_EXTENSION) +=3D page_ext.o obj-$(CONFIG_PAGE_TABLE_CHECK) +=3D page_table_check.o obj-$(CONFIG_CMA_DEBUGFS) +=3D cma_debug.o diff --git a/mm/balloon_compaction.c b/mm/balloon.c similarity index 98% rename from mm/balloon_compaction.c rename to mm/balloon.c index f41e4a179a431..5734dae81e318 100644 --- a/mm/balloon_compaction.c +++ b/mm/balloon.c @@ -1,15 +1,14 @@ // SPDX-License-Identifier: GPL-2.0-only /* - * mm/balloon_compaction.c - * - * Common interface for making balloon pages movable by compaction. + * Common interface for implementing a memory balloon, including support + * for migration of pages inflated in a memory balloon. * * Copyright (C) 2012, Red Hat, Inc. Rafael Aquini */ #include #include #include -#include +#include =20 /* * Lock protecting the balloon_dev_info of all devices. We don't really --=20 2.52.0