From: Vlastimil Babka Date: Thu, 29 Jul 2021 15:21:24 +0200 Subject: [PATCH 27/35] mm, slub: don't disable irqs in slub_cpu_dead() slub_cpu_dead() cleans up for an offlined cpu from another cpu and calls only functions that are now irq safe, so we don't need to disable irqs anymore. Signed-off-by: Vlastimil Babka Signed-off-by: Sebastian Andrzej Siewior --- mm/slub.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) --- a/mm/slub.c +++ b/mm/slub.c @@ -2540,14 +2540,10 @@ static void flush_all(struct kmem_cache static int slub_cpu_dead(unsigned int cpu) { struct kmem_cache *s; - unsigned long flags; mutex_lock(&slab_mutex); - list_for_each_entry(s, &slab_caches, list) { - local_irq_save(flags); + list_for_each_entry(s, &slab_caches, list) __flush_cpu_slab(s, cpu); - local_irq_restore(flags); - } mutex_unlock(&slab_mutex); return 0; }