Re: [RFC 1/2] mm: page_alloc: replace pageblock_flags bitmap with struct pageblock_data

[Rik van Riel]

On Fri, 2026-04-03 at 15:40 -0400, Johannes Weiner wrote:
> From: Johannes Weiner <jweiner@xxxxxxxx>
> 
> Replace the packed pageblock_flags bitmap with a per-pageblock struct
> containing its own flags word. This changes the storage from
> NR_PAGEBLOCK_BITS bits per pageblock packed into shared unsigned
> longs,
> to a dedicated unsigned long per pageblock.
> 

> Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>

Reviewed-by: Rik van Riel <riel@xxxxxxxxxxx>


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