[PATCH extra ] mm: hugetlb: add description for alloc_gigantic_page()
From: Huang Shijie <hidden>
Date: 2016-11-30 06:30:50
Also in:
linux-mm
Subsystem:
hugetlb subsystem, memory management, the rest · Maintainers:
Muchun Song, Oscar Salvador, Andrew Morton, Linus Torvalds
This patch adds the description for function alloc_gigantic_page(). Signed-off-by: Huang Shijie <redacted> --- mm/hugetlb.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 3faec05..0d4bb8a 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c@@ -1089,6 +1089,12 @@ static bool zone_spans_last_pfn(const struct zone *zone, return zone_spans_pfn(zone, last_pfn); } +/* + * Allocate a gigantic page from @nid node. + * + * Scan the zones of @nid node, and try to allocate a number of contiguous + * pages (1 << order). + */ static struct page *alloc_gigantic_page(int nid, unsigned int order) { unsigned long nr_pages = 1 << order;
--
2.5.5