mm: expose arch_mmap_rnd when available

[android-x86/kernel.git] / arch / s390 / mm / mmap.c

diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index db57078..a94504d 100644 (file)
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -60,7 +60,7 @@ static inline int mmap_is_legacy(void)
        return sysctl_legacy_va_layout;
 }
 
-static unsigned long mmap_rnd(void)
+unsigned long arch_mmap_rnd(void)
 {
        if (is_32bit_task())
                return (get_random_int() & 0x7ff) << PAGE_SHIFT;
@@ -187,7 +187,7 @@ unsigned long randomize_et_dyn(void)
                base &= ~((1UL << 32) - 1);
 
        if (current->flags & PF_RANDOMIZE)
-               base += mmap_rnd();
+               base += arch_mmap_rnd();
 
        return base;
 }
@@ -203,7 +203,7 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
        unsigned long random_factor = 0UL;
 
        if (current->flags & PF_RANDOMIZE)
-               random_factor = mmap_rnd();
+               random_factor = arch_mmap_rnd();
 
        /*
         * Fall back to the standard layout if the personality
@@ -283,7 +283,7 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
        unsigned long random_factor = 0UL;
 
        if (current->flags & PF_RANDOMIZE)
-               random_factor = mmap_rnd();
+               random_factor = arch_mmap_rnd();
 
        /*
         * Fall back to the standard layout if the personality