Re: [PATCHv4 03/14] mm: Rename the 'compound_head' field in the 'struct page' to 'compound_info'

[Zi Yan]

On 21 Jan 2026, at 11:22, Kiryl Shutsemau wrote:

> The 'compound_head' field in the 'struct page' encodes whether the page
> is a tail and where to locate the head page. Bit 0 is set if the page is
> a tail, and the remaining bits in the field point to the head page.
>
> As preparation for changing how the field encodes information about the
> head page, rename the field to 'compound_info'.
>
> Signed-off-by: Kiryl Shutsemau <kas@xxxxxxxxxx>
> Reviewed-by: Muchun Song <muchun.song@xxxxxxxxx>
> ---
>  .../admin-guide/kdump/vmcoreinfo.rst          |  2 +-
>  Documentation/mm/vmemmap_dedup.rst            |  6 +++---
>  include/linux/mm_types.h                      | 20 +++++++++----------
>  include/linux/page-flags.h                    | 18 ++++++++---------
>  include/linux/types.h                         |  2 +-
>  kernel/vmcore_info.c                          |  2 +-
>  mm/page_alloc.c                               |  2 +-
>  mm/slab.h                                     |  2 +-
>  mm/util.c                                     |  2 +-
>  9 files changed, 28 insertions(+), 28 deletions(-)
>
LGTM.

Reviewed-by: Zi Yan <ziy@xxxxxxxxxx>

Best Regards,
Yan, Zi