[PATCH 06/14] mm/ksm: clear all slab cache pointers in ksm_slab_free()

[Longlong Xia]

From: Longlong Xia <xialonglong@xxxxxxxxxx>

ksm_slab_free() only clears mm_slot_cache after destroying the caches.
Clear rmap_item_cache and stable_node_cache as well.

No functional change intended.

Assisted-by: Zcode:GLM-5.3
Signed-off-by: Longlong Xia <xialonglong@xxxxxxxxxx>

---
 mm/ksm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mm/ksm.c b/mm/ksm.c
index 99f0bd3a1ae3..78040ed99ccf 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -523,6 +523,8 @@ static void __init ksm_slab_free(void)
 	kmem_cache_destroy(stable_node_cache);
 	kmem_cache_destroy(rmap_item_cache);
 	mm_slot_cache = NULL;
+	stable_node_cache = NULL;
+	rmap_item_cache = NULL;
 }
 
 static __always_inline bool is_stable_node_chain(struct ksm_stable_node *chain)
-- 
2.43.0