diff options
| author | Muchun Song <songmuchun@bytedance.com> | 2026-08-05 10:25:36 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-08-24 18:43:06 -0700 |
| commit | e73aeb8a411e5327da9c0746b2f93924ab081113 (patch) | |
| tree | bb9059ddf76cca8de52f334bf981caf9f01acebd /include/linux | |
| parent | afff109c2f8b35b88ea783d345c1067a311a57d8 (diff) | |
mm/sparse: keep mem_section_usage_size() internal
mem_section_usage_size() is only needed by sparsemem implementation code
after commit ae751d567baa ("mm/bootmem_info: stop marking
mem_section_usage as MIX_SECTION_INFO"), so keeping the declaration in
mmzone.h now exposes the helper to all mmzone.h users for no reason.
Move the helper to sparse.h so sparse.c and sparse-vmemmap.c can share it
through the internal header. While doing so, calculate the allocation
size with struct_size_t(), which ties the expression to the
pageblock_flags trailing array instead of open-coding the struct header
plus bitmap size.
Link: https://lore.kernel.org/20260805022536.1206575-1-songmuchun@bytedance.com
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.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>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mmzone.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 158c1fba2393..94f9c3ff5416 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -2069,7 +2069,6 @@ static inline struct mem_section *__nr_to_section(unsigned long nr) #endif return &mem_section[root][nr & SECTION_ROOT_MASK]; } -extern size_t mem_section_usage_size(void); /* * We use the lower bits of the mem_map pointer to store a little bit of |