tree:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-unstable
head:   fb94e0734a2aaf6fc11c92959efc640370df8d42
commit: f8bc956f6ea69564abee1b1407df5582b9ba6296 [57/72] mm: memcontrol: deprecate charge moving
reproduce:
        # https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/commit/?id=f8bc956f6ea69564abee1b1407df5582b9ba6296
        git remote add akpm-mm https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git
        git fetch --no-tags akpm-mm mm-unstable
        git checkout f8bc956f6ea69564abee1b1407df5582b9ba6296
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        make htmldocs

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

All warnings (new ones prefixed by >>):

>> Documentation/admin-guide/cgroup-v1/memory.rst:723: WARNING: Title underline too short.

vim +723 Documentation/admin-guide/cgroup-v1/memory.rst

a6df63615b943d Documentation/cgroups/memory.txt               Balbir Singh          2009-09-23  712  
a6df63615b943d Documentation/cgroups/memory.txt               Balbir Singh          2009-09-23  713  	# echo 1G > memory.soft_limit_in_bytes
a6df63615b943d Documentation/cgroups/memory.txt               Balbir Singh          2009-09-23  714  
99c8b231ae6c6c Documentation/cgroup-v1/memory.rst             Mauro Carvalho Chehab 2019-06-12  715  NOTE1:
99c8b231ae6c6c Documentation/cgroup-v1/memory.rst             Mauro Carvalho Chehab 2019-06-12  716         Soft limits take effect over a long period of time, since they involve
a6df63615b943d Documentation/cgroups/memory.txt               Balbir Singh          2009-09-23  717         reclaiming memory for balancing between memory cgroups
99c8b231ae6c6c Documentation/cgroup-v1/memory.rst             Mauro Carvalho Chehab 2019-06-12  718  NOTE2:
99c8b231ae6c6c Documentation/cgroup-v1/memory.rst             Mauro Carvalho Chehab 2019-06-12  719         It is recommended to set the soft limit always below the hard limit,
a6df63615b943d Documentation/cgroups/memory.txt               Balbir Singh          2009-09-23  720         otherwise the hard limit will take precedence.
a6df63615b943d Documentation/cgroups/memory.txt               Balbir Singh          2009-09-23  721  
f8bc956f6ea695 Documentation/admin-guide/cgroup-v1/memory.rst Johannes Weiner       2022-12-07  722  8. Move charges at task migration (DEPRECATED!)
99c8b231ae6c6c Documentation/cgroup-v1/memory.rst             Mauro Carvalho Chehab 2019-06-12 @723  =================================
7dc74be032bfca Documentation/cgroups/memory.txt               Daisuke Nishimura     2010-03-10  724  

:::::: The code at line 723 was first introduced by commit
:::::: 99c8b231ae6c6ca4ca2fd1c0b3701071f589661f docs: cgroup-v1: convert docs to ReST and rename to *.rst

:::::: TO: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
:::::: CC: Tejun Heo <tj@kernel.org>

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