[RFC,v2,27/34] mm, slub: don't disable irqs in slub_cpu_dead()

Commit Message

Vlastimil Babka June 9, 2021, 11:38 a.m. UTC

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 <[e-mail]>
---
 mm/slub.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

Patch

diff --git a/mm/slub.c b/mm/slub.c
index 5a81189608e6..12d35d6a6eaa 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2498,14 +2498,10 @@  static void flush_all(struct kmem_cache *s)
 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;
 }