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Diffstat (limited to 'arch/sh64/mm/hugetlbpage.c')
-rw-r--r--arch/sh64/mm/hugetlbpage.c18
1 files changed, 16 insertions, 2 deletions
diff --git a/arch/sh64/mm/hugetlbpage.c b/arch/sh64/mm/hugetlbpage.c
index bcad2aefa4ee..dcd9c8a8baf8 100644
--- a/arch/sh64/mm/hugetlbpage.c
+++ b/arch/sh64/mm/hugetlbpage.c
@@ -24,7 +24,7 @@
#include <asm/tlbflush.h>
#include <asm/cacheflush.h>
-static pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
+pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
{
pgd_t *pgd;
pmd_t *pmd;
@@ -39,7 +39,7 @@ static pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
return pte;
}
-static pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
+pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
{
pgd_t *pgd;
pmd_t *pmd;
@@ -80,6 +80,20 @@ static void set_huge_pte(struct mm_struct *mm, struct vm_area_struct *vma,
}
}
+pte_t huge_ptep_get_and_clear(pte_t *ptep)
+{
+ pte_t entry;
+
+ entry = *ptep;
+
+ for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
+ pte_clear(pte);
+ pte++;
+ }
+
+ return entry;
+}
+
/*
* This function checks for proper alignment of input addr and len parameters.
*/