The patch titled Subject: mm/slub.c: fix -Wunused-function compiler warnings has been removed from the -mm tree. Its filename was mm-slub-fix-wunused-function-compiler-warnings.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Qian Cai <cai@xxxxxx> Subject: mm/slub.c: fix -Wunused-function compiler warnings tid_to_cpu() and tid_to_event() are only used in note_cmpxchg_failure() when SLUB_DEBUG_CMPXCHG=y, so when SLUB_DEBUG_CMPXCHG=n by default, Clang will complain that those unused functions. Link: http://lkml.kernel.org/r/1568752232-5094-1-git-send-email-cai@xxxxxx Signed-off-by: Qian Cai <cai@xxxxxx> Acked-by: David Rientjes <rientjes@xxxxxxxxxx> Cc: Christoph Lameter <cl@xxxxxxxxx> Cc: Pekka Enberg <penberg@xxxxxxxxxx> Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/slub.c | 2 ++ 1 file changed, 2 insertions(+) --- a/mm/slub.c~mm-slub-fix-wunused-function-compiler-warnings +++ a/mm/slub.c @@ -2004,6 +2004,7 @@ static inline unsigned long next_tid(uns return tid + TID_STEP; } +#ifdef SLUB_DEBUG_CMPXCHG static inline unsigned int tid_to_cpu(unsigned long tid) { return tid % TID_STEP; @@ -2013,6 +2014,7 @@ static inline unsigned long tid_to_event { return tid / TID_STEP; } +#endif static inline unsigned int init_tid(int cpu) { _ Patches currently in -mm which might be from cai@xxxxxx are writeback-fix-wstringop-truncation-warnings.patch