Re: [PATCH] mm: page_alloc: avoid merging non-fallbackable pageblocks with others.

[Oscar Salvador]

On 2022-01-24 18:59, Zi Yan wrote:
> From: Zi Yan <ziy@xxxxxxxxxx>
>
> This is done in addition to MIGRATE_ISOLATE pageblock merge avoidance.
> It prepares for the upcoming removal of the MAX_ORDER-1 alignment
> requirement for CMA and alloc_contig_range().
>
> MIGRARTE_HIGHATOMIC should not merge with other migratetypes like
> MIGRATE_ISOLATE and MIGRARTE_CMA[1], so this commit prevents that too.
>
> Remove MIGRARTE_CMA and MIGRATE_ISOLATE from fallbacks list, since they
> are never used.
>
> [1] 
> https://lore.kernel.org/linux-mm/20211130100853.GP3366@xxxxxxxxxxxxxxxxxxx/
>
> Signed-off-by: Zi Yan <ziy@xxxxxxxxxx>
> Acked-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>

Reviewed-by: Oscar Salvador <osalvador@xxxxxxx>


--
Oscar Salvador
SUSE Labs