From: Hui Su <sh_def@xxxxxxx> Subject: mm/z3fold.c: use xx_zalloc instead xx_alloc and memset alloc_slots() allocates memory for slots using kmem_cache_alloc(), then memsets it. We can just use kmem_cache_zalloc(). Link: https://lkml.kernel.org/r/20200926100834.GA184671@rlk Signed-off-by: Hui Su <sh_def@xxxxxxx> Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/z3fold.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/mm/z3fold.c~mmz3fold-use-xx_zalloc-instead-xx_alloc-and-memset +++ a/mm/z3fold.c @@ -212,13 +212,12 @@ static inline struct z3fold_buddy_slots { struct z3fold_buddy_slots *slots; - slots = kmem_cache_alloc(pool->c_handle, + slots = kmem_cache_zalloc(pool->c_handle, (gfp & ~(__GFP_HIGHMEM | __GFP_MOVABLE))); if (slots) { /* It will be freed separately in free_handle(). */ kmemleak_not_leak(slots); - memset(slots->slot, 0, sizeof(slots->slot)); slots->pool = (unsigned long)pool; rwlock_init(&slots->lock); } _
