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-rw-r--r--mm/internal.h15
1 files changed, 14 insertions, 1 deletions
diff --git a/mm/internal.h b/mm/internal.h
index 58c3757c52d9..42e30e71554a 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -446,7 +446,9 @@ static inline struct file *maybe_unlock_mmap_for_io(struct vm_fault *vmf,
static inline void clear_page_mlock(struct page *page) { }
static inline void mlock_vma_page(struct page *page) { }
static inline void mlock_migrate_page(struct page *new, struct page *old) { }
-
+static inline void vunmap_range_noflush(unsigned long start, unsigned long end)
+{
+}
#endif /* !CONFIG_MMU */
/*
@@ -640,7 +642,18 @@ struct migration_target_control {
/*
* mm/vmalloc.c
*/
+#ifdef CONFIG_MMU
int vmap_pages_range_noflush(unsigned long addr, unsigned long end,
pgprot_t prot, struct page **pages, unsigned int page_shift);
+#else
+static inline
+int vmap_pages_range_noflush(unsigned long addr, unsigned long end,
+ pgprot_t prot, struct page **pages, unsigned int page_shift)
+{
+ return -EINVAL;
+}
+#endif
+
+void vunmap_range_noflush(unsigned long start, unsigned long end);
#endif /* __MM_INTERNAL_H */