1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index a862a96952e0..f28a0338574f 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -235,6 +235,14 @@ static inline int get_page_unless_zero(struct page *page)
 struct page *vmalloc_to_page(const void *addr);
 unsigned long vmalloc_to_pfn(const void *addr);
 
+/* Determine if an address is within the vmalloc range */
+static inline int is_vmalloc_addr(const void *x)
+{
+        unsigned long addr = (unsigned long)x;
+
+        return addr >= VMALLOC_START && addr < VMALLOC_END;
+}
+
 static inline struct page *compound_head(struct page *page)
 {
         if (unlikely(PageTail(page)))