diff options
Diffstat (limited to 'mm/sparse-vmemmap.c')
| -rw-r--r-- | mm/sparse-vmemmap.c | 21 |
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); } |