1 files changed, 9 insertions, 1 deletions

diff --git a/mm/slub.c b/mm/slub.c
index 64d9966..ffe13fd 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2035,9 +2035,17 @@ static void flush_cpu_slab(void *d)
 	__flush_cpu_slab(s, smp_processor_id());
 }
 
+static bool has_cpu_slab(int cpu, void *info)
+{
+	struct kmem_cache *s = info;
+	struct kmem_cache_cpu *c = per_cpu_ptr(s->cpu_slab, cpu);
+
+	return !!(c->page);
+}
+
 static void flush_all(struct kmem_cache *s)
 {
-	on_each_cpu(flush_cpu_slab, s, 1);
+	on_each_cpu_cond(has_cpu_slab, flush_cpu_slab, s, 1, GFP_ATOMIC);
 }
 
 /*