1 files changed, 5 insertions, 0 deletions

diff --git a/fs/proc/page.c b/fs/proc/page.c
index 2707c6c7a20f..2281c2cbfe2b 100644
--- a/fs/proc/page.c
+++ b/fs/proc/page.c
@@ -2,6 +2,7 @@
 #include <linux/compiler.h>
 #include <linux/fs.h>
 #include <linux/init.h>
+#include <linux/ksm.h>
 #include <linux/mm.h>
 #include <linux/mmzone.h>
 #include <linux/proc_fs.h>
@@ -95,6 +96,8 @@ static const struct file_operations proc_kpagecount_operations = {
 #define KPF_UNEVICTABLE         18
 #define KPF_NOPAGE              20
 
+#define KPF_KSM                 21
+
 /* kernel hacking assistances
  * WARNING: subject to change, never rely on them!
  */
@@ -137,6 +140,8 @@ static u64 get_uflags(struct page *page)
                 u |= 1 << KPF_MMAP;
         if (PageAnon(page))
                 u |= 1 << KPF_ANON;
+        if (PageKsm(page))
+                u |= 1 << KPF_KSM;
 
         /*
          * compound pages: export both head/tail info