From: Ralf Baechle <ralf@linux-mips.org>
Date: Tue, 16 Oct 2012 23:01:12 +0000 (+0200)
Subject: MIPS: Hugetlbfs: Handle huge pages correctly in pmd_bad()
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=344afa6550a66eb4b7103cf1b65fca6f38d380d8;p=openwrt%2Fstaging%2Fblogic.git

MIPS: Hugetlbfs: Handle huge pages correctly in pmd_bad()

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

diff --git a/arch/mips/include/asm/pgtable-64.h b/arch/mips/include/asm/pgtable-64.h
index c26e18250079..f5b521d5a67d 100644
--- a/arch/mips/include/asm/pgtable-64.h
+++ b/arch/mips/include/asm/pgtable-64.h
@@ -9,6 +9,7 @@
 #ifndef _ASM_PGTABLE_64_H
 #define _ASM_PGTABLE_64_H
 
+#include <linux/compiler.h>
 #include <linux/linkage.h>
 
 #include <asm/addrspace.h>
@@ -172,7 +173,19 @@ static inline int pmd_none(pmd_t pmd)
 	return pmd_val(pmd) == (unsigned long) invalid_pte_table;
 }
 
-#define pmd_bad(pmd)		(pmd_val(pmd) & ~PAGE_MASK)
+static inline int pmd_bad(pmd_t pmd)
+{
+#ifdef CONFIG_HUGETLB_PAGE
+	/* pmd_huge(pmd) but inline */
+	if (unlikely(pmd_val(pmd) & _PAGE_HUGE))
+		return 0;
+#endif
+
+	if (unlikely(pmd_val(pmd) & ~PAGE_MASK))
+		return 1;
+
+	return 0;
+}
 
 static inline int pmd_present(pmd_t pmd)
 {