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Diffstat (limited to 'mm/sparse-vmemmap.c')
-rw-r--r--mm/sparse-vmemmap.c21
1 files changed, 14 insertions, 7 deletions
diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c
index 7fec05796796..200aef686722 100644
--- a/mm/sparse-vmemmap.c
+++ b/mm/sparse-vmemmap.c
@@ -245,19 +245,26 @@ int __meminit vmemmap_populate_basepages(unsigned long start,
return 0;
}
-struct page * __meminit sparse_mem_map_populate(unsigned long pnum, int nid,
- struct vmem_altmap *altmap)
+struct page * __meminit __populate_section_memmap(unsigned long pfn,
+ unsigned long nr_pages, int nid, struct vmem_altmap *altmap)
{
unsigned long start;
unsigned long end;
- struct page *map;
- map = pfn_to_page(pnum * PAGES_PER_SECTION);
- start = (unsigned long)map;
- end = (unsigned long)(map + PAGES_PER_SECTION);
+ /*
+ * The minimum granularity of memmap extensions is
+ * PAGES_PER_SUBSECTION as allocations are tracked in the
+ * 'subsection_map' bitmap of the section.
+ */
+ end = ALIGN(pfn + nr_pages, PAGES_PER_SUBSECTION);
+ pfn &= PAGE_SUBSECTION_MASK;
+ nr_pages = end - pfn;
+
+ start = (unsigned long) pfn_to_page(pfn);
+ end = start + nr_pages * sizeof(struct page);
if (vmemmap_populate(start, end, nid, altmap))
return NULL;
- return map;
+ return pfn_to_page(pfn);
}