[PATCH] mm: hugetlb_vmemmap: allow alloc vmemmap pages fallback to other nodes

[Yuan Can <yuancan@huawei.com>]

In vmemmap_remap_free(), a new head vmemmap page is allocated to avoid
breaking a contiguous block of struct page memory, however, the allocation
can always fail when the given node is movable node. Remove the
__GFP_THISNODE to help avoid fragmentation.

Suggested-by: Mike Kravetz <mike.kravetz@oracle.com>
Suggested-by: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Yuan Can <yuancan@huawei.com>
---
 mm/hugetlb_vmemmap.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/hugetlb_vmemmap.c b/mm/hugetlb_vmemmap.c
index c2007ef5e9b0..27fc65b8e37e 100644
--- a/mm/hugetlb_vmemmap.c
+++ b/mm/hugetlb_vmemmap.c
@@ -325,8 +325,7 @@ static int vmemmap_remap_free(unsigned long start, unsigned long end,
 		.vmemmap_pages	= &vmemmap_pages,
 	};
 	int nid = page_to_nid((struct page *)start);
-	gfp_t gfp_mask = GFP_KERNEL | __GFP_THISNODE | __GFP_NORETRY |
-			__GFP_NOWARN;
+	gfp_t gfp_mask = GFP_KERNEL | __GFP_NORETRY | __GFP_NOWARN;
 
 	/*
 	 * Allocate a new head vmemmap page to avoid breaking a contiguous
-- 
2.17.1