tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   9ce08dd7ea24253aac5fd2519f9aea27dfb390c9
commit: efe2b9e7bb9d83f834863dc4037009b2c503d3ec [5028/5186] mm: remove page_evictable()
reproduce:
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=efe2b9e7bb9d83f834863dc4037009b2c503d3ec
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout efe2b9e7bb9d83f834863dc4037009b2c503d3ec
        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/mm/unevictable-lru.rst:186: WARNING: Title underline too short.

vim +186 Documentation/mm/unevictable-lru.rst

fa07e787733416 Documentation/vm/unevictable-lru.txt Lee Schermerhorn        2008-10-18  183  
fa07e787733416 Documentation/vm/unevictable-lru.txt Lee Schermerhorn        2008-10-18  184  
efe2b9e7bb9d83 Documentation/mm/unevictable-lru.rst Matthew Wilcox (Oracle  2023-01-16  185) Vmscan's Handling of Unevictable Folios
c24b720188e9a1 Documentation/vm/unevictable-lru.txt David Howells           2009-04-13 @186  --------------------------------------
fa07e787733416 Documentation/vm/unevictable-lru.txt Lee Schermerhorn        2008-10-18  187  

:::::: The code at line 186 was first introduced by commit
:::::: c24b720188e9a1f83caa5b6d49b4cb5b843256f1 mm: reformat the Unevictable-LRU documentation

:::::: TO: David Howells <dhowells@redhat.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

-- 
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https://github.com/intel/lkp-tests