linux-kernel - Re: [PATCH V2 05/12] kernfs: introduce kernfs_node

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Date:   Fri, 16 Jun 2017 04:14:36 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Shaohua Li <shli@...nel.org>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        linux-block@...r.kernel.org, tj@...nel.org,
        gregkh@...uxfoundation.org, hch@....de, axboe@...com,
        rostedt@...dmis.org, lizefan@...wei.com, Kernel-team@...com,
        Shaohua Li <shli@...com>
Subject: Re: [PATCH V2 05/12] kernfs: introduce kernfs_node_id

Hi Shaohua,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.12-rc5 next-20170615]
[cannot apply to driver-core/driver-core-testing block/for-next]
[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/Shaohua-Li/kernfs-implement-i_generation/20170615-211524
config: sh-allmodconfig (attached as .config)
compiler: sh4-linux-gnu-gcc (Debian 6.3.0-18) 6.3.0 20170516
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=sh 

All error/warnings (new ones prefixed by >>):

   In file included from fs/fs-writeback.c:98:0:
   include/trace/events/writeback.h: In function '__trace_wb_assign_cgroup':
>> include/trace/events/writeback.h:139:34: error: 'struct kernfs_node' has no member named 'ino'
     return wb->memcg_css->cgroup->kn->ino;
                                     ^~
   In file included from fs/fs-writeback.c:98:0:
>> include/trace/events/writeback.h:140:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^

vim +139 include/trace/events/writeback.h

9fb0a7da Tejun Heo 2013-01-11  133  
5634cc2a Tejun Heo 2015-08-18  134  #ifdef CREATE_TRACE_POINTS
5634cc2a Tejun Heo 2015-08-18  135  #ifdef CONFIG_CGROUP_WRITEBACK
5634cc2a Tejun Heo 2015-08-18  136  
a664edb3 Yang Shi  2016-03-03  137  static inline unsigned int __trace_wb_assign_cgroup(struct bdi_writeback *wb)
5634cc2a Tejun Heo 2015-08-18  138  {
a664edb3 Yang Shi  2016-03-03 @139  	return wb->memcg_css->cgroup->kn->ino;
5634cc2a Tejun Heo 2015-08-18 @140  }
5634cc2a Tejun Heo 2015-08-18  141  
a664edb3 Yang Shi  2016-03-03  142  static inline unsigned int __trace_wbc_assign_cgroup(struct writeback_control *wbc)
5634cc2a Tejun Heo 2015-08-18  143  {

:::::: The code at line 139 was first introduced by commit
:::::: a664edb374c704a734a0df41fc742c285a5beb52 tracing, writeback: Replace cgroup path to cgroup ino

:::::: TO: Yang Shi <yang.shi@...aro.org>
:::::: CC: Steven Rostedt <rostedt@...dmis.org>

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