diff --git a/mm/migrate.c b/mm/migrate.c
index e9e00d1d1d19..32cc8e0b1cce 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -68,10 +68,6 @@ bool isolate_movable_page(struct page *page, isolate_mode_t mode)
 	if (!folio)
 		goto out;
 
-	if (unlikely(folio_test_slab(folio)))
-		goto out_putfolio;
-	/* Pairs with smp_wmb() in slab freeing, e.g. SLUB's __free_slab() */
-	smp_rmb();
 	/*
 	 * Check movable flag before taking the page lock because
 	 * we use non-atomic bitops on newly allocated page flags so
@@ -79,10 +75,6 @@ bool isolate_movable_page(struct page *page, isolate_mode_t mode)
 	 */
 	if (unlikely(!__folio_test_movable(folio)))
 		goto out_putfolio;
-	/* Pairs with smp_wmb() in slab allocation, e.g. SLUB's alloc_slab_page() */
-	smp_rmb();
-	if (unlikely(folio_test_slab(folio)))
-		goto out_putfolio;
 
 	/*
 	 * As movable pages are not isolated from LRU lists, concurrent
diff --git a/mm/slub.c b/mm/slub.c
index a8e9b5106f4c..996691c137eb 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2429,8 +2429,6 @@ static inline struct slab *alloc_slab_page(gfp_t flags, int node,
 
 	slab = folio_slab(folio);
 	__folio_set_slab(folio);
-	/* Make the flag visible before any changes to folio->mapping */
-	smp_wmb();
 	if (folio_is_pfmemalloc(folio))
 		slab_set_pfmemalloc(slab);
 
@@ -2651,8 +2649,6 @@ static void __free_slab(struct kmem_cache *s, struct slab *slab)
 
 	__slab_clear_pfmemalloc(slab);
 	folio->mapping = NULL;
-	/* Make the mapping reset visible before clearing the flag */
-	smp_wmb();
 	__folio_clear_slab(folio);
 	mm_account_reclaimed_pages(pages);
 	unaccount_slab(slab, order, s);