The alloc_vmemmap_page_list() is called when hugetlb get freed, more memory
will be returned to buddy after it succeed, thus work with __GFP_MEMALLOC
to allow it ignore watermarks.
Signed-off-by: Yuan Can <yuancan@xxxxxxxxxx>
---
mm/hugetlb_vmemmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/hugetlb_vmemmap.c b/mm/hugetlb_vmemmap.c
index 0485e471d224..dc0b9247a1f9 100644
--- a/mm/hugetlb_vmemmap.c
+++ b/mm/hugetlb_vmemmap.c
@@ -386,7 +386,7 @@ static int vmemmap_remap_free(unsigned long start, unsigned long end,
static int alloc_vmemmap_page_list(unsigned long start, unsigned long end,
struct list_head *list)
{
- gfp_t gfp_mask = GFP_KERNEL | __GFP_RETRY_MAYFAIL;
+ gfp_t gfp_mask = GFP_KERNEL | __GFP_RETRY_MAYFAIL | __GFP_MEMALLOC;
unsigned long nr_pages = (end - start) >> PAGE_SHIFT;
int nid = page_to_nid((struct page *)start);
struct page *page, *next;
--
2.17.1
