[PATCH v18 01/10] idr: add #include <linux/bug.h>

[Wei Wang]

The <linux/bug.h> was removed from radix-tree.h by the following commit:
f5bba9d11a256ad2a1c2f8e7fc6aabe6416b7890.

Since that commit, tools/testing/radix-tree/ couldn't pass compilation
due to: tools/testing/radix-tree/idr.c:17: undefined reference to
WARN_ON_ONCE. This patch adds the bug.h header to idr.h to solve the
issue.

Signed-off-by: Wei Wang <wei.w.wang@xxxxxxxxx>
Cc: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Eric Biggers <ebiggers@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
---
 include/linux/idr.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/idr.h b/include/linux/idr.h
index 7c3a365..fa14f83 100644
--- a/include/linux/idr.h
+++ b/include/linux/idr.h
@@ -15,6 +15,7 @@
 #include <linux/radix-tree.h>
 #include <linux/gfp.h>
 #include <linux/percpu.h>
+#include <linux/bug.h>
 
 struct idr {
 	struct radix_tree_root	idr_rt;
-- 
2.7.4