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Diffstat (limited to 'include/linux/huge_mm.h')
-rw-r--r--include/linux/huge_mm.h14
1 files changed, 12 insertions, 2 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index b0e80cc72b0c..38265f9f782e 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -218,6 +218,9 @@ void __split_huge_pud(struct vm_area_struct *vma, pud_t *pud,
int hugepage_madvise(struct vm_area_struct *vma, unsigned long *vm_flags,
int advice);
+int madvise_collapse(struct vm_area_struct *vma,
+ struct vm_area_struct **prev,
+ unsigned long start, unsigned long end);
void vma_adjust_trans_huge(struct vm_area_struct *vma, unsigned long start,
unsigned long end, long adjust_next);
spinlock_t *__pmd_trans_huge_lock(pmd_t *pmd, struct vm_area_struct *vma);
@@ -361,9 +364,16 @@ static inline void split_huge_pmd_address(struct vm_area_struct *vma,
static inline int hugepage_madvise(struct vm_area_struct *vma,
unsigned long *vm_flags, int advice)
{
- BUG();
- return 0;
+ return -EINVAL;
}
+
+static inline int madvise_collapse(struct vm_area_struct *vma,
+ struct vm_area_struct **prev,
+ unsigned long start, unsigned long end)
+{
+ return -EINVAL;
+}
+
static inline void vma_adjust_trans_huge(struct vm_area_struct *vma,
unsigned long start,
unsigned long end,