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-rw-r--r--mm/highmem.c2
-rw-r--r--mm/vmalloc.c8
2 files changed, 9 insertions, 1 deletions
diff --git a/mm/highmem.c b/mm/highmem.c
index 107b10f9878e..64d8dea47dd1 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -29,7 +29,7 @@
#include <linux/highmem.h>
#include <linux/kgdb.h>
#include <asm/tlbflush.h>
-
+#include <linux/vmalloc.h>
#if defined(CONFIG_HIGHMEM) || defined(CONFIG_X86_32)
DEFINE_PER_CPU(int, __kmap_atomic_idx);
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index b29ad17edcf5..1f46c3b86f9f 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -41,6 +41,14 @@
#include "internal.h"
+bool is_vmalloc_addr(const void *x)
+{
+ unsigned long addr = (unsigned long)x;
+
+ return addr >= VMALLOC_START && addr < VMALLOC_END;
+}
+EXPORT_SYMBOL(is_vmalloc_addr);
+
struct vfree_deferred {
struct llist_head list;
struct work_struct wq;