From: Matthew Wilcox <willy@xxxxxxxxxxxxxxx> The radix-tree header uses the __ffs() function, which is defined in bitops.h. The current kernel headers implicitly include bitops.h, but the userspace test harness does not. Signed-off-by: Matthew Wilcox <willy@xxxxxxxxxxxxxxx> --- include/linux/radix-tree.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h index 7c88ad1..35b3d11 100644 --- a/include/linux/radix-tree.h +++ b/include/linux/radix-tree.h @@ -21,6 +21,7 @@ #ifndef _LINUX_RADIX_TREE_H #define _LINUX_RADIX_TREE_H +#include <linux/bitops.h> #include <linux/preempt.h> #include <linux/types.h> #include <linux/bug.h> -- 2.7.0.rc3 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>