linux-kernel - [PATCH 1/2] sh: stub out pud

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Date:   Mon,  1 Jul 2019 17:18:17 +0200
From:   Christoph Hellwig <hch@....de>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Paul Burton <paul.burton@...s.com>,
        James Hogan <jhogan@...nel.org>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>
Cc:     linux-mips@...r.kernel.org, linux-sh@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] sh: stub out pud_page

There wasn't any actual need to add a real pud_page, as pud_huge
always returns false on sh.  Just stub it out to fix the sh3
compile failure.

Fixes: 937b4e1d6471 ("sh: add the missing pud_page definition")
Reported-by: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Christoph Hellwig <hch@....de>
---
 arch/sh/include/asm/pgtable-3level.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/sh/include/asm/pgtable-3level.h b/arch/sh/include/asm/pgtable-3level.h
index 3c7ff20f3f94..779260b721ca 100644
--- a/arch/sh/include/asm/pgtable-3level.h
+++ b/arch/sh/include/asm/pgtable-3level.h
@@ -37,7 +37,9 @@ static inline unsigned long pud_page_vaddr(pud_t pud)
 {
 	return pud_val(pud);
 }
-#define pud_page(pud)		pfn_to_page(pud_pfn(pud))
+
+/* only used by the stubbed out hugetlb gup code, should never be called */
+#define pud_page(pud)		NULL
 
 #define pmd_index(address)	(((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
 static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
-- 
2.20.1