From fead6dcff83b02f8d6dc3c1ebbe4e09c05c54ee5 Mon Sep 17 00:00:00 2001 From: "David Hildenbrand (Arm)" Date: Fri, 20 Mar 2026 23:13:43 +0100 Subject: mm: prepare to move subsection_map_init() to mm/sparse-vmemmap.c We want to move subsection_map_init() to mm/sparse-vmemmap.c. To prepare for getting rid of subsection_map_init() in mm/sparse.c completely, use a static inline function for !CONFIG_SPARSEMEM_VMEMMAP. While at it, move the declaration to internal.h and rename it to "sparse_init_subsection_map()". Link: https://lkml.kernel.org/r/20260320-sparsemem_cleanups-v2-11-096addc8800d@kernel.org Signed-off-by: David Hildenbrand (Arm) Reviewed-by: Lorenzo Stoakes (Oracle) Reviewed-by: Mike Rapoport (Microsoft) Cc: Axel Rasmussen Cc: Liam Howlett Cc: Michal Hocko Cc: Oscar Salvador Cc: Sidhartha Kumar Cc: Suren Baghdasaryan Cc: Vlastimil Babka Cc: Wei Xu Cc: Yuanchu Xie Signed-off-by: Andrew Morton --- include/linux/mmzone.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 3f651baf7e2b..7cf4a194aea2 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -1982,8 +1982,6 @@ struct mem_section_usage { unsigned long pageblock_flags[0]; }; -void subsection_map_init(unsigned long pfn, unsigned long nr_pages); - struct page; struct page_ext; struct mem_section { @@ -2376,7 +2374,6 @@ static inline unsigned long next_present_section_nr(unsigned long section_nr) #define sparse_vmemmap_init_nid_early(_nid) do {} while (0) #define sparse_vmemmap_init_nid_late(_nid) do {} while (0) #define pfn_in_present_section pfn_valid -#define subsection_map_init(_pfn, _nr_pages) do {} while (0) #endif /* CONFIG_SPARSEMEM */ /* -- cgit v1.2.3