[PATCH 6/8] mm/bootmem_info: stop marking mem_section_usage as MIX_SECTION_INFO
STALE134d
IN MM
From: "David Hildenbrand (Arm)" <david@kernel.org>
Date: 2026-05-11 14:06:08
Also in:
linux-mm, linux-s390, lkml, sparclinux
Subsystem:
memory management, the rest · Maintainers:
Andrew Morton, Linus Torvalds
Queued in mm as ae751d567baa on 2026-06-02.
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. Signed-off-by: David Hildenbrand (Arm) <david@kernel.org> --- mm/bootmem_info.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-)
diff --git a/mm/bootmem_info.c b/mm/bootmem_info.c
index cce1d560f094..0fa78db7fbc0 100644
--- a/mm/bootmem_info.c
+++ b/mm/bootmem_info.c@@ -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)
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2.43.0