Re: [PATCH] mm: memcontrol: add the mempolicy interface for cgroup v2.

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Hi hezhongkun,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v5.18 next-20220524]
[cannot apply to akpm-mm/mm-everything]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/intel-lab-lkp/linux/commits/hezhongkun/mm-memcontrol-add-the-mempolicy-interface-for-cgroup-v2/20220524-183922
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 143a6252e1b8ab424b4b293512a97cca7295c182
config: x86_64-randconfig-a014 (https://download.01.org/0day-ci/archive/20220524/202205242316.8f8rvh3s-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 10c9ecce9f6096e18222a331c5e7d085bd813f75)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/6adb0a02c27c8811bee9783451ee25155baf490e
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review hezhongkun/mm-memcontrol-add-the-mempolicy-interface-for-cgroup-v2/20220524-183922
        git checkout 6adb0a02c27c8811bee9783451ee25155baf490e
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> mm/mempolicy.c:179:19: warning: no previous prototype for function 'get_cgrp_or_task_policy' [-Wmissing-prototypes]
   struct mempolicy *get_cgrp_or_task_policy(struct task_struct *p)
                     ^
   mm/mempolicy.c:179:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   struct mempolicy *get_cgrp_or_task_policy(struct task_struct *p)
   ^
   static 
   1 warning generated.


vim +/get_cgrp_or_task_policy +179 mm/mempolicy.c

   178	
 > 179	struct mempolicy *get_cgrp_or_task_policy(struct task_struct *p)
   180	{
   181		struct mempolicy *pol;
   182		struct mem_cgroup *memcg = mem_cgroup_from_task(p);
   183	
   184		pol = (memcg && memcg->mempolicy) ? memcg->mempolicy : get_task_policy(p);
   185		return pol;
   186	}
   187	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp



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