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uapi: mqueue.h: add missing linux/types.h include

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Commit 63159f5dcc ("uapi: Use __kernel_long_t in struct mq_attr")
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

Link: http://lkml.kernel.org/r/20170119194644.4403-1-vapier@gentoo.org
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mike Frysinger 2017-02-24 15:00:26 -08:00 committed by Linus Torvalds
parent 796f571b0c
commit 1ca5eebb89
1 changed files with 2 additions and 0 deletions
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include/uapi/linux/mqueue.h
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@ -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