mm/page_ext: remove pgdat_page_ext_init()

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pgdat_page_ext_init() sets pgdat->node_page_ext to NULL only on FLATMEM. 
FLATMEM depends on !NUMA, so the pgdat is always the zero-initialized
contig_page_data and the store has no effect.

So remove the call site, the unused function and its declaration.

No functional change.

Link: https://lore.kernel.org/20260804151145.3419768-3-ekffu200098@gmail.com
Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com>
Acked-by: Zi Yan <ziy@nvidia.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

...

This commit is contained in:

Sang-Heon Jeon 2026-08-05 00:11:42 +09:00 • committed by Andrew Morton

parent 34568000f3

commit 0ddb8bb85b

3 changed files with 0 additions and 15 deletions

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5

include/linux/page_ext.h

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1

mm/mm_init.c

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9

mm/page_ext.c

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