fix unused setup_nr_node_ids

[linux-drm-fsl-dcu.git] / mm / mlock.c

diff --git a/mm/mlock.c b/mm/mlock.c
index 3446b7ef731e6c419cc0cf2656829eeca6fea5a7..4d3fea267e0dabde457091a2618a0efe8dba864d 100644 (file)
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -10,7 +10,18 @@
 #include <linux/mm.h>
 #include <linux/mempolicy.h>
 #include <linux/syscalls.h>
+#include <linux/sched.h>
+#include <linux/module.h>
 
+int can_do_mlock(void)
+{
+       if (capable(CAP_IPC_LOCK))
+               return 1;
+       if (current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur != 0)
+               return 1;
+       return 0;
+}
+EXPORT_SYMBOL(can_do_mlock);
 
 static int mlock_fixup(struct vm_area_struct *vma, struct vm_area_struct **prev,
        unsigned long start, unsigned long end, unsigned int newflags)