[v2 2/6] mm: hugetlb_vmemmap: Use nid of the head page to reallocate it

From: Usama Arif
Date: Sun Jul 30 2023 - 11:16:45 EST


If tail page prep and initialization is skipped, then the "start"
page will not contain the correct nid. Use the nid from first
vmemap page.

Signed-off-by: Usama Arif <usama.arif@xxxxxxxxxxxxx>
---
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 b721e87de2b3..bdf750a4786b 100644
--- a/mm/hugetlb_vmemmap.c
+++ b/mm/hugetlb_vmemmap.c
@@ -324,7 +324,7 @@ static int vmemmap_remap_free(unsigned long start, unsigned long end,
.reuse_addr = reuse,
.vmemmap_pages = &vmemmap_pages,
};
- int nid = page_to_nid((struct page *)start);
+ int nid = page_to_nid((struct page *)reuse);
gfp_t gfp_mask = GFP_KERNEL | __GFP_THISNODE | __GFP_NORETRY |
__GFP_NOWARN;

--
2.25.1