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-rw-r--r--mm/slub.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/mm/slub.c b/mm/slub.c
index 7611f148ee81..fe6d7be22ef0 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3237,8 +3237,9 @@ int __kmem_cache_shutdown(struct kmem_cache *s)
if (!rc) {
/*
- * We do the same lock strategy around sysfs_slab_add, see
- * __kmem_cache_create. Because this is pretty much the last
+ * Since slab_attr_store may take the slab_mutex, we should
+ * release the lock while removing the sysfs entry in order to
+ * avoid a deadlock. Because this is pretty much the last
* operation we do and the lock will be released shortly after
* that in slab_common.c, we could just move sysfs_slab_remove
* to a later point in common code. We should do that when we
@@ -3778,10 +3779,7 @@ int __kmem_cache_create(struct kmem_cache *s, unsigned long flags)
return 0;
memcg_propagate_slab_attrs(s);
- mutex_unlock(&slab_mutex);
err = sysfs_slab_add(s);
- mutex_lock(&slab_mutex);
-
if (err)
kmem_cache_close(s);