Hi Arnd,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[cannot apply to v5.3-rc8 next-20190904]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Arnd-Bergmann/smack-include-linux-watch_queue-h/20190910-095704
reproduce:
        # apt-get install sparse
        # sparse version: 
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> security/smack/smack_lsm.c:45:11: sparse: error: unable to open 'linux/watch_queue.h'

vim +45 security/smack/smack_lsm.c

  > 45	#include <linux/watch_queue.h>
    46	#include "smack.h"
    47	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation