[PATCH 5.10 452/717] sparc: fix handling of page table constructor failure

[Greg Kroah-Hartman]

From: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>

[ Upstream commit 06517c9a336f4c20f2064611bf4b1e7881a95fe1 ]

The page has just been allocated, so its refcount is 1.  free_unref_page()
is for use on pages which have a zero refcount.  Use __free_page() like
the other implementations of pte_alloc_one().

Link: https://lkml.kernel.org/r/20201125034655.27687-1-willy@xxxxxxxxxxxxx
Fixes: 1ae9ae5f7df7 ("sparc: handle pgtable_page_ctor() fail")
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Reviewed-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: David Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 arch/sparc/mm/init_64.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 96edf64d4fb30..182bb7bdaa0a1 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -2894,7 +2894,7 @@ pgtable_t pte_alloc_one(struct mm_struct *mm)
 	if (!page)
 		return NULL;
 	if (!pgtable_pte_page_ctor(page)) {
-		free_unref_page(page);
+		__free_page(page);
 		return NULL;
 	}
 	return (pte_t *) page_address(page);
-- 
2.27.0