uml: fix build error

fix:

 arch/um/os-Linux/helper.c: In function 'run_helper':
 arch/um/os-Linux/helper.c:73: error: 'PATH_MAX' undeclared (first use in this function)

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/um/os-Linux/helper.c b/arch/um/os-Linux/helper.c
index f4bd349d4412..f25c29a12d00 100644
--- a/arch/um/os-Linux/helper.c
+++ b/arch/um/os-Linux/helper.c
@@ -14,6 +14,7 @@
 #include "os.h"
 #include "um_malloc.h"
 #include "user.h"
+#include <linux/limits.h>
 
 struct helper_data {
         void (*pre_exec)(void*);