linux-kernel - [PATCH] uapi: mqueue.h: add missing linux/types.h include

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Date:   Thu, 19 Jan 2017 13:46:44 -0600
From:   Mike Frysinger <vapier@...too.org>
To:     linux-kernel@...r.kernel.org
Cc:     Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] uapi: mqueue.h: add missing linux/types.h include

From: Mike Frysinger <vapier@...omium.org>

Commit 63159f5dcccb3858d88aaef800c4ee0eb4cc8577 changed the types from
long to __kernel_long_t, but didn't add a linux/types.h include.  Code
that tries to include this header directly breaks:

/usr/include/linux/mqueue.h:26:2: error: unknown type name '__kernel_long_t'
  __kernel_long_t mq_flags; /* message queue flags   */

This also upsets configure tests for this header:
checking linux/mqueue.h usability... no
checking linux/mqueue.h presence... yes
configure: WARNING: linux/mqueue.h: present but cannot be compiled
configure: WARNING: linux/mqueue.h:     check for missing prerequisite headers?
configure: WARNING: linux/mqueue.h: see the Autoconf documentation
configure: WARNING: linux/mqueue.h:     section "Present But Cannot Be Compiled"
configure: WARNING: linux/mqueue.h: proceeding with the compiler's result
checking for linux/mqueue.h... no

Signed-off-by: Mike Frysinger <vapier@...too.org>
---
 include/uapi/linux/mqueue.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/uapi/linux/mqueue.h b/include/uapi/linux/mqueue.h
index d0a2b8e89813..bbd5116ea739 100644
--- a/include/uapi/linux/mqueue.h
+++ b/include/uapi/linux/mqueue.h
@@ -18,6 +18,8 @@
 #ifndef _LINUX_MQUEUE_H
 #define _LINUX_MQUEUE_H

+#include <linux/types.h>
+
 #define MQ_PRIO_MAX 	32768
 /* per-uid limit of kernel memory used by mqueue, in bytes */
 #define MQ_BYTES_MAX	819200
-- 
2.11.0