include/linux/idr.h: add #include <linux/bug.h>

The <linux/bug.h> was removed from radix-tree.h by commit 1ce28fe9f517
("include/linux/radix-tree.h: remove unneeded #include <linux/bug.h>").

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.

Link: http://lkml.kernel.org/r/1511963726-34070-2-git-send-email-wei.w.wang@intel.com
Fixes: 1ce28fe9f51 ("include/linux/radix-tree.h: remove unneeded #include <linux/bug.h>")
Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/idr.h b/include/linux/idr.h
index 7c3a365f7e127ac29cfedc6b5debe81eb87abe74..fa14f834e4ede3a81e7e6182c889fec338b2495f 100644 (file)
--- 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;