1 files changed, 3 insertions, 11 deletions

diff --git a/arch/powerpc/mm/mmap_64.c b/arch/powerpc/mm/mmap_64.c
index 5a783d8e8e8e..67a42ed0d2fc 100644
--- a/arch/powerpc/mm/mmap_64.c
+++ b/arch/powerpc/mm/mmap_64.c
@@ -53,14 +53,6 @@ static inline int mmap_is_legacy(void)
         return sysctl_legacy_va_layout;
 }
 
-/*
- * Since get_random_int() returns the same value within a 1 jiffy window,
- * we will almost always get the same randomisation for the stack and mmap
- * region. This will mean the relative distance between stack and mmap will
- * be the same.
- *
- * To avoid this we can shift the randomness by 1 bit.
- */
 static unsigned long mmap_rnd(void)
 {
         unsigned long rnd = 0;
@@ -68,11 +60,11 @@ static unsigned long mmap_rnd(void)
         if (current->flags & PF_RANDOMIZE) {
                 /* 8MB for 32bit, 1GB for 64bit */
                 if (is_32bit_task())
-                        rnd = (long)(get_random_int() % (1<<(22-PAGE_SHIFT)));
+                        rnd = (long)(get_random_int() % (1<<(23-PAGE_SHIFT)));
                 else
-                        rnd = (long)(get_random_int() % (1<<(29-PAGE_SHIFT)));
+                        rnd = (long)(get_random_int() % (1<<(30-PAGE_SHIFT)));
         }
-        return (rnd << PAGE_SHIFT) * 2;
+        return rnd << PAGE_SHIFT;
 }
 
 static inline unsigned long mmap_base(void)