Warning: mm/slab_common.c:1342 struct member 'defer_head' not described in 'kfree_rcu_cpu'

Warning: mm/slab_common.c:1342 struct member 'defer_head' not described in 'kfree_rcu_cpu'

[kernel test robot]

tree:   https://github.com/intel-lab-lkp/linux/commits/Harry-Yoo-Oracle/mm-slab-introduce-k-v-free_rcu-with-struct-rcu_ptr/20260417-105128
head:   9a622bfd287229f4a91dcae07d37b4db2a3d41fd
commit: 7f2f0174037b58426221582c493815f7083a2b90 mm/slab: introduce kfree_rcu_nolock()
date:   21 hours ago
config: x86_64-rhel-9.4 (https://download.01.org/0day-ci/archive/20260418/202604180157.ye50OffR-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260418/202604180157.ye50OffR-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202604180157.ye50OffR-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> Warning: mm/slab_common.c:1342 struct member 'defer_head' not described in 'kfree_rcu_cpu'
>> Warning: mm/slab_common.c:1342 struct member 'defer_free' not described in 'kfree_rcu_cpu'
>> Warning: mm/slab_common.c:1342 struct member 'sched_delayed_monitor' not described in 'kfree_rcu_cpu'
>> Warning: mm/slab_common.c:1342 struct member 'run_page_cache_worker' not described in 'kfree_rcu_cpu'
>> Warning: mm/slab_common.c:1342 struct member 'defer_head' not described in 'kfree_rcu_cpu'
>> Warning: mm/slab_common.c:1342 struct member 'defer_free' not described in 'kfree_rcu_cpu'
>> Warning: mm/slab_common.c:1342 struct member 'sched_delayed_monitor' not described in 'kfree_rcu_cpu'
>> Warning: mm/slab_common.c:1342 struct member 'run_page_cache_worker' not described in 'kfree_rcu_cpu'

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