mm: don't overwrite mm->def_flags in do_mlockall()
[~shefty/rdma-dev.git] / mm / mlock.c
index f0b9ce572fc78ddbd0118db8aaa60d9b56086bf9..c9bd528b01d2361aa6e37f9791a831c3b2a443e7 100644 (file)
@@ -517,11 +517,11 @@ SYSCALL_DEFINE2(munlock, unsigned long, start, size_t, len)
 static int do_mlockall(int flags)
 {
        struct vm_area_struct * vma, * prev = NULL;
-       unsigned int def_flags = 0;
 
        if (flags & MCL_FUTURE)
-               def_flags = VM_LOCKED;
-       current->mm->def_flags = def_flags;
+               current->mm->def_flags |= VM_LOCKED;
+       else
+               current->mm->def_flags &= ~VM_LOCKED;
        if (flags == MCL_FUTURE)
                goto out;