linux-kernel - Re: [PATCH v1 2/2] treewide: remove MIGRATEPAGE

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Message-ID: <2025081248-frisbee-empathic-1815@gregkh>
Date: Tue, 12 Aug 2025 08:32:56 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: David Hildenbrand <david@...hat.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linuxppc-dev@...ts.ozlabs.org, virtualization@...ts.linux.dev,
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	Arnd Bergmann <arnd@...db.de>,
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	Alexander Viro <viro@...iv.linux.org.uk>,
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	Alistair Popple <apopple@...dia.com>,
	Minchan Kim <minchan@...nel.org>,
	Sergey Senozhatsky <senozhatsky@...omium.org>
Subject: Re: [PATCH v1 2/2] treewide: remove MIGRATEPAGE_SUCCESS

On Mon, Aug 11, 2025 at 04:39:48PM +0200, David Hildenbrand wrote:
> At this point MIGRATEPAGE_SUCCESS is misnamed for all folio users,
> and now that we remove MIGRATEPAGE_UNMAP, it's really the only "success"
> return value that the code uses and expects.
> 
> Let's just get rid of MIGRATEPAGE_SUCCESS completely and just use "0"
> for success.
> 
> Signed-off-by: David Hildenbrand <david@...hat.com>
> ---
>  arch/powerpc/platforms/pseries/cmm.c |  2 +-
>  drivers/misc/vmw_balloon.c           |  4 +--
>  drivers/virtio/virtio_balloon.c      |  2 +-
>  fs/aio.c                             |  2 +-
>  fs/btrfs/inode.c                     |  4 +--
>  fs/hugetlbfs/inode.c                 |  4 +--
>  fs/jfs/jfs_metapage.c                |  8 +++---
>  include/linux/migrate.h              | 10 +------
>  mm/migrate.c                         | 40 +++++++++++++---------------
>  mm/migrate_device.c                  |  2 +-
>  mm/zsmalloc.c                        |  4 +--
>  11 files changed, 36 insertions(+), 46 deletions(-)

Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>