diff --git a/include/linux/slab.h b/include/linux/slab.h
index 837005314f96..d99afce36098 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -549,6 +549,10 @@ void *kmem_cache_alloc_lru_noprof(struct kmem_cache *s, struct list_lru *lru,
 
 void kmem_cache_free(struct kmem_cache *s, void *objp);
 
+kmem_buckets *kmem_buckets_create(const char *name, slab_flags_t flags,
+				  unsigned int useroffset, unsigned int usersize,
+				  void (*ctor)(void *));
+
 /*
  * Bulk allocation and freeing operations. These are accelerated in an
  * allocator specific way to avoid taking locks repeatedly or building
@@ -682,6 +686,12 @@ static __always_inline __alloc_size(1) void *kmalloc_noprof(size_t size, gfp_t f
 }
 #define kmalloc(...)				alloc_hooks(kmalloc_noprof(__VA_ARGS__))
 
+#define kmem_buckets_alloc(_b, _size, _flags)	\
+	alloc_hooks(__kmalloc_node_noprof(PASS_BUCKET_PARAMS(_size, _b), _flags, NUMA_NO_NODE))
+
+#define kmem_buckets_alloc_track_caller(_b, _size, _flags)	\
+	alloc_hooks(__kmalloc_node_track_caller_noprof(PASS_BUCKET_PARAMS(_size, _b), _flags, NUMA_NO_NODE, _RET_IP_))
+
 static __always_inline __alloc_size(1) void *kmalloc_node_noprof(size_t size, gfp_t flags, int node)
 {
 	if (__builtin_constant_p(size) && size) {
@@ -809,6 +819,8 @@ void *__kvmalloc_node_noprof(DECL_BUCKET_PARAMS(size, b), gfp_t flags, int node)
 #define kvzalloc(_size, _flags)			kvmalloc(_size, (_flags)|__GFP_ZERO)
 
 #define kvzalloc_node(_size, _flags, _node)	kvmalloc_node(_size, (_flags)|__GFP_ZERO, _node)
+#define kmem_buckets_valloc(_b, _size, _flags)	\
+	alloc_hooks(__kvmalloc_node_noprof(PASS_BUCKET_PARAMS(_size, _b), _flags, NUMA_NO_NODE))
 
 static inline __alloc_size(1, 2) void *
 kvmalloc_array_node_noprof(size_t n, size_t size, gfp_t flags, int node)
diff --git a/mm/slab_common.c b/mm/slab_common.c
index bcc1e13d7f86..70943a4c1c4b 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -392,6 +392,98 @@ kmem_cache_create(const char *name, unsigned int size, unsigned int align,
 }
 EXPORT_SYMBOL(kmem_cache_create);
 
+static struct kmem_cache *kmem_buckets_cache __ro_after_init;
+
+/**
+ * kmem_buckets_create - Create a set of caches that handle dynamic sized
+ *			 allocations via kmem_buckets_alloc()
+ * @name: A prefix string which is used in /proc/slabinfo to identify this
+ *	  cache. The individual caches with have their sizes as the suffix.
+ * @flags: SLAB flags (see kmem_cache_create() for details).
+ * @useroffset: Starting offset within an allocation that may be copied
+ *		to/from userspace.
+ * @usersize: How many bytes, starting at @useroffset, may be copied
+ *		to/from userspace.
+ * @ctor: A constructor for the objects, run when new allocations are made.
+ *
+ * Cannot be called within an interrupt, but can be interrupted.
+ *
+ * Return: a pointer to the cache on success, NULL on failure. When
+ * CONFIG_SLAB_BUCKETS is not enabled, ZERO_SIZE_PTR is returned, and
+ * subsequent calls to kmem_buckets_alloc() will fall back to kmalloc().
+ * (i.e. callers only need to check for NULL on failure.)
+ */
+kmem_buckets *kmem_buckets_create(const char *name, slab_flags_t flags,
+				  unsigned int useroffset,
+				  unsigned int usersize,
+				  void (*ctor)(void *))
+{
+	kmem_buckets *b;
+	int idx;
+
+	/*
+	 * When the separate buckets API is not built in, just return
+	 * a non-NULL value for the kmem_buckets pointer, which will be
+	 * unused when performing allocations.
+	 */
+	if (!IS_ENABLED(CONFIG_SLAB_BUCKETS))
+		return ZERO_SIZE_PTR;
+
+	if (WARN_ON(!kmem_buckets_cache))
+		return NULL;
+
+	b = kmem_cache_alloc(kmem_buckets_cache, GFP_KERNEL|__GFP_ZERO);
+	if (WARN_ON(!b))
+		return NULL;
+
+	flags |= SLAB_NO_MERGE;
+
+	for (idx = 0; idx < ARRAY_SIZE(kmalloc_caches[KMALLOC_NORMAL]); idx++) {
+		char *short_size, *cache_name;
+		unsigned int cache_useroffset, cache_usersize;
+		unsigned int size;
+
+		if (!kmalloc_caches[KMALLOC_NORMAL][idx])
+			continue;
+
+		size = kmalloc_caches[KMALLOC_NORMAL][idx]->object_size;
+		if (!size)
+			continue;
+
+		short_size = strchr(kmalloc_caches[KMALLOC_NORMAL][idx]->name, '-');
+		if (WARN_ON(!short_size))
+			goto fail;
+
+		cache_name = kasprintf(GFP_KERNEL, "%s-%s", name, short_size + 1);
+		if (WARN_ON(!cache_name))
+			goto fail;
+
+		if (useroffset >= size) {
+			cache_useroffset = 0;
+			cache_usersize = 0;
+		} else {
+			cache_useroffset = useroffset;
+			cache_usersize = min(size - cache_useroffset, usersize);
+		}
+		(*b)[idx] = kmem_cache_create_usercopy(cache_name, size,
+					0, flags, cache_useroffset,
+					cache_usersize, ctor);
+		kfree(cache_name);
+		if (WARN_ON(!(*b)[idx]))
+			goto fail;
+	}
+
+	return b;
+
+fail:
+	for (idx = 0; idx < ARRAY_SIZE(kmalloc_caches[KMALLOC_NORMAL]); idx++)
+		kmem_cache_destroy((*b)[idx]);
+	kfree(b);
+
+	return NULL;
+}
+EXPORT_SYMBOL(kmem_buckets_create);
+
 #ifdef SLAB_SUPPORTS_SYSFS
 /*
  * For a given kmem_cache, kmem_cache_destroy() should only be called
@@ -932,6 +1024,11 @@ void __init create_kmalloc_caches(void)
 
 	/* Kmalloc array is now usable */
 	slab_state = UP;
+
+	if (IS_ENABLED(CONFIG_SLAB_BUCKETS))
+		kmem_buckets_cache = kmem_cache_create("kmalloc_buckets",
+						       sizeof(kmem_buckets),
+						       0, SLAB_NO_MERGE, NULL);
 }
 
 /**