Re: [PATCH v3 0/7] Cleanup free_pages() misuse

[Mike Rapoport <rppt@kernel.org>]

On Wed, Sep 03, 2025 at 11:59:14AM -0700, Vishal Moola (Oracle) wrote:
> free_pages() is supposed to be called when we only have a virtual address.
> __free_pages() is supposed to be called when we have a page.
> 
> There are a number of callers that use page_address() to get a page's
> virtual address then call free_pages() on it when they should just call
> __free_pages() directly.
> 
> Add kernel-docs for free_pages() to help callers better understand which
> function they should be calling, and replace the obvious cases of
> misuse.
> 
> Vishal Moola (Oracle) (7):
>   mm/page_alloc: Add kernel-docs for free_pages()
>   aoe: Stop calling page_address() in free_page()
>   x86: Stop calling page_address() in free_pages()
>   riscv: Stop calling page_address() in free_pages()
>   powerpc: Stop calling page_address() in free_pages()
>   arm64: Stop calling page_address() in free_pages()
>   virtio_balloon: Stop calling page_address() in free_pages()

Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>

>  arch/arm64/mm/mmu.c                      | 2 +-
>  arch/powerpc/mm/book3s64/radix_pgtable.c | 2 +-
>  arch/riscv/mm/init.c                     | 4 ++--
>  arch/x86/mm/init_64.c                    | 2 +-
>  arch/x86/platform/efi/memmap.c           | 2 +-
>  drivers/block/aoe/aoecmd.c               | 2 +-
>  drivers/virtio/virtio_balloon.c          | 8 +++-----
>  mm/page_alloc.c                          | 9 +++++++++
>  8 files changed, 19 insertions(+), 12 deletions(-)
> 
> -- 
> 2.51.0
> 
> 

-- 
Sincerely yours,
Mike.