The patch titled Subject: mm/swap_slots.c: remove always zero and unused return value of enable_swap_slots_cache() has been removed from the -mm tree. Its filename was mm-swap_slotsc-remove-always-zero-and-unused-return-value-of-enable_swap_slots_cache.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Miaohe Lin <linmiaohe@xxxxxxxxxx> Subject: mm/swap_slots.c: remove always zero and unused return value of enable_swap_slots_cache() enable_swap_slots_cache() always return zero and its return value is just ignored by the caller. So make enable_swap_slots_cache() void. Link: https://lkml.kernel.org/r/20200924113554.50614-1-linmiaohe@xxxxxxxxxx Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/swap_slots.h | 2 +- mm/swap_slots.c | 3 +-- 2 files changed, 2 insertions(+), 3 deletions(-) --- a/include/linux/swap_slots.h~mm-swap_slotsc-remove-always-zero-and-unused-return-value-of-enable_swap_slots_cache +++ a/include/linux/swap_slots.h @@ -23,7 +23,7 @@ struct swap_slots_cache { void disable_swap_slots_cache_lock(void); void reenable_swap_slots_cache_unlock(void); -int enable_swap_slots_cache(void); +void enable_swap_slots_cache(void); int free_swap_slot(swp_entry_t entry); extern bool swap_slot_cache_enabled; --- a/mm/swap_slots.c~mm-swap_slotsc-remove-always-zero-and-unused-return-value-of-enable_swap_slots_cache +++ a/mm/swap_slots.c @@ -237,7 +237,7 @@ static int free_slot_cache(unsigned int return 0; } -int enable_swap_slots_cache(void) +void enable_swap_slots_cache(void) { mutex_lock(&swap_slots_cache_enable_mutex); if (!swap_slot_cache_initialized) { @@ -255,7 +255,6 @@ int enable_swap_slots_cache(void) __reenable_swap_slots_cache(); out_unlock: mutex_unlock(&swap_slots_cache_enable_mutex); - return 0; } /* called with swap slot cache's alloc lock held */ _ Patches currently in -mm which might be from linmiaohe@xxxxxxxxxx are mm-vmstat-use-helper-macro-abs.patch mm-fix-some-broken-comments.patch mm-use-helper-function-put_write_access.patch percpu_counter-use-helper-macro-abs.patch mm-migrate-avoid-possible-unnecessary-process-right-check-in-kernel_move_pages.patch