From: Miaohe Lin <linmiaohe@xxxxxxxxxx> Subject: mm/swap_slots.c: delete meaningless forward declarations deactivate_swap_slots_cache() and reactivate_swap_slots_cache() are only called below their implementations. So these forward declarations are meaningless and should be removed. Link: https://lkml.kernel.org/r/20210520134022.1370406-4-linmiaohe@xxxxxxxxxx Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx> Cc: Hugh Dickins <hughd@xxxxxxxxxx> Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/swap_slots.c | 2 -- 1 file changed, 2 deletions(-) --- a/mm/swap_slots.c~mm-swap_slotsc-delete-meaningless-forward-declarations +++ a/mm/swap_slots.c @@ -43,8 +43,6 @@ static DEFINE_MUTEX(swap_slots_cache_mut static DEFINE_MUTEX(swap_slots_cache_enable_mutex); static void __drain_swap_slots_cache(unsigned int type); -static void deactivate_swap_slots_cache(void); -static void reactivate_swap_slots_cache(void); #define use_swap_slot_cache (swap_slot_cache_active && swap_slot_cache_enabled) #define SLOTS_CACHE 0x1 _