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SubjectRe: [PATCH v2] cpuset: fix a deadlock due to incomplete patching of cpusets_enabled()
Hi Dima,

[auto build test WARNING on v4.12]
[cannot apply to cgroup/for-next linus/master v4.13-rc2 v4.13-rc1 next-20170728]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

config: i386-randconfig-x019-201730 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
# save the attached .config to linux build tree
make ARCH=i386

All warnings (new ones prefixed by >>):

In file included from kernel/sched/core.c:13:0:
include/linux/cpuset.h: In function 'read_mems_allowed_begin':
>> include/linux/cpuset.h:261:9: warning: 'return' with a value, in function returning void
return 0;
include/linux/cpuset.h:259:20: note: declared here
static inline void read_mems_allowed_begin(struct cpuset_mems_cookie *cookie)

vim +/return +261 include/linux/cpuset.h

58568d2a Miao Xie 2009-06-16 258
6b828cc9 Dima Zavin 2017-07-27 259 static inline void read_mems_allowed_begin(struct cpuset_mems_cookie *cookie)
c0ff7453 Miao Xie 2010-05-24 260 {
cc9a6c87 Mel Gorman 2012-03-21 @261 return 0;
c0ff7453 Miao Xie 2010-05-24 262 }
c0ff7453 Miao Xie 2010-05-24 263

:::::: The code at line 261 was first introduced by commit
:::::: cc9a6c8776615f9c194ccf0b63a0aa5628235545 cpuset: mm: reduce large amounts of memory barrier related damage v3

:::::: TO: Mel Gorman <>
:::::: CC: Linus Torvalds <>

0-DAY kernel test infrastructure Open Source Technology Center Intel Corporation
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