1 files changed, 19 insertions, 4 deletions

diff --git a/kernel/sys.c b/kernel/sys.c
index c0a58be780a4..fba0f29401ea 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -174,10 +174,10 @@ SYSCALL_DEFINE3(setpriority, int, which, int, who, int, niceval)
 
         /* normalize: avoid signed division (rounding problems) */
         error = -ESRCH;
-        if (niceval < -20)
-                niceval = -20;
-        if (niceval > 19)
-                niceval = 19;
+        if (niceval < MIN_NICE)
+                niceval = MIN_NICE;
+        if (niceval > MAX_NICE)
+                niceval = MAX_NICE;
 
         rcu_read_lock();
         read_lock(&tasklist_lock);
@@ -1996,6 +1996,21 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
                 if (arg2 || arg3 || arg4 || arg5)
                         return -EINVAL;
                 return current->no_new_privs ? 1 : 0;
+        case PR_GET_THP_DISABLE:
+                if (arg2 || arg3 || arg4 || arg5)
+                        return -EINVAL;
+                error = !!(me->mm->def_flags & VM_NOHUGEPAGE);
+                break;
+        case PR_SET_THP_DISABLE:
+                if (arg3 || arg4 || arg5)
+                        return -EINVAL;
+                down_write(&me->mm->mmap_sem);
+                if (arg2)
+                        me->mm->def_flags |= VM_NOHUGEPAGE;
+                else
+                        me->mm->def_flags &= ~VM_NOHUGEPAGE;
+                up_write(&me->mm->mmap_sem);
+                break;
         default:
                 error = -EINVAL;
                 break;