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mm/bootmem_info: stop marking mem_section_usage as MIX_SECTION_INFO

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We never free the ms->usage data for boot memory sections (see
section_deactivate()). And to identify whether ms->usage was allocated
from memblock, we simply identify it by looking at PG_reserved.

Consequently, there is no need to mark ms->usage as MIX_SECTION_INFO.
Let's just stop doing that.

Link: https://lore.kernel.org/[email protected]
Signed-off-by: David Hildenbrand (Arm) <[email protected]>
Acked-by: Oscar Salvador <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Reviewed-by: Mike Rapoport (Microsoft) <[email protected]>
Reviewed-by: Lance Yang <[email protected]>
Cc: Alexander Gordeev <[email protected]>
Cc: Andreas Larsson <[email protected]>
Cc: Christian Borntraeger <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: Gerald Schaefer <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Liam R. Howlett <[email protected]>
Cc: Lorenzo Stoakes <[email protected]>
Cc: Madhavan Srinivasan <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Nicholas Piggin <[email protected]>
Cc: Suren Baghdasaryan <[email protected]>
Cc: Sven Schnelle <[email protected]>
Cc: Vasily Gorbik <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Ritesh Harjani (IBM) <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
This commit is contained in:
David Hildenbrand (Arm) authored and Andrew Morton committed 2026-06-02 15:22:11 -07:00
1 parent 0928e9050d
commit ae751d567b
1 file changed
+1 -11
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mm/bootmem_info.c
+1 -11
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@@ -38,10 +38,8 @@ void put_page_bootmem(struct page *page)
static void __init register_page_bootmem_info_section(unsigned long start_pfn)
{
unsigned long mapsize, section_nr, i;
unsigned long section_nr;
struct mem_section *ms;
struct mem_section_usage *usage;
struct page *page;
start_pfn = SECTION_ALIGN_DOWN(start_pfn);
section_nr = pfn_to_section_nr(start_pfn);
@@ -50,14 +48,6 @@ static void __init register_page_bootmem_info_section(unsigned long start_pfn)
if (!preinited_vmemmap_section(ms))
register_page_bootmem_memmap(section_nr, pfn_to_page(start_pfn),
PAGES_PER_SECTION);
usage = ms->usage;
page = virt_to_page(usage);
mapsize = PAGE_ALIGN(mem_section_usage_size()) >> PAGE_SHIFT;
for (i = 0; i < mapsize; i++, page++)
get_page_bootmem(section_nr, page, MIX_SECTION_INFO);
}
void __init register_page_bootmem_info_node(struct pglist_data *pgdat)