diff --git a/include/linux/zsmalloc.h b/include/linux/zsmalloc.h
index a48cd0ffe57d..7d70983cf398 100644
--- a/include/linux/zsmalloc.h
+++ b/include/linux/zsmalloc.h
@@ -58,4 +58,12 @@ unsigned long zs_compact(struct zs_pool *pool);
 unsigned int zs_lookup_class_index(struct zs_pool *pool, unsigned int size);
 
 void zs_pool_stats(struct zs_pool *pool, struct zs_pool_stats *stats);
+
+void *zs_obj_read_begin(struct zs_pool *pool, unsigned long handle,
+			void *local_copy);
+void zs_obj_read_end(struct zs_pool *pool, unsigned long handle,
+		     void *handle_mem);
+void zs_obj_write(struct zs_pool *pool, unsigned long handle,
+		  void *handle_mem, size_t mem_len);
+
 #endif
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index bc679a3e1718..51d8080f187a 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -1432,6 +1432,135 @@ void zs_unmap_object(struct zs_pool *pool, unsigned long handle)
 }
 EXPORT_SYMBOL_GPL(zs_unmap_object);
 
+void *zs_obj_read_begin(struct zs_pool *pool, unsigned long handle,
+			void *local_copy)
+{
+	struct zspage *zspage;
+	struct zpdesc *zpdesc;
+	unsigned long obj, off;
+	unsigned int obj_idx;
+	struct size_class *class;
+	void *addr;
+
+	WARN_ON(in_interrupt());
+
+	/* Guarantee we can get zspage from handle safely */
+	read_lock(&pool->lock);
+	obj = handle_to_obj(handle);
+	obj_to_location(obj, &zpdesc, &obj_idx);
+	zspage = get_zspage(zpdesc);
+
+	/* Make sure migration doesn't move any pages in this zspage */
+	zspage_read_lock(zspage);
+	read_unlock(&pool->lock);
+
+	class = zspage_class(pool, zspage);
+	off = offset_in_page(class->size * obj_idx);
+
+	if (off + class->size <= PAGE_SIZE) {
+		/* this object is contained entirely within a page */
+		addr = kmap_local_zpdesc(zpdesc);
+		addr += off;
+	} else {
+		size_t sizes[2];
+
+		/* this object spans two pages */
+		sizes[0] = PAGE_SIZE - off;
+		sizes[1] = class->size - sizes[0];
+		addr = local_copy;
+
+		memcpy_from_page(addr, zpdesc_page(zpdesc),
+				 off, sizes[0]);
+		zpdesc = get_next_zpdesc(zpdesc);
+		memcpy_from_page(addr + sizes[0],
+				 zpdesc_page(zpdesc),
+				 0, sizes[1]);
+	}
+
+	if (!ZsHugePage(zspage))
+		addr += ZS_HANDLE_SIZE;
+
+	return addr;
+}
+EXPORT_SYMBOL_GPL(zs_obj_read_begin);
+
+void zs_obj_read_end(struct zs_pool *pool, unsigned long handle,
+		     void *handle_mem)
+{
+	struct zspage *zspage;
+	struct zpdesc *zpdesc;
+	unsigned long obj, off;
+	unsigned int obj_idx;
+	struct size_class *class;
+
+	obj = handle_to_obj(handle);
+	obj_to_location(obj, &zpdesc, &obj_idx);
+	zspage = get_zspage(zpdesc);
+	class = zspage_class(pool, zspage);
+	off = offset_in_page(class->size * obj_idx);
+
+	if (off + class->size <= PAGE_SIZE) {
+		if (!ZsHugePage(zspage))
+			off += ZS_HANDLE_SIZE;
+		handle_mem -= off;
+		kunmap_local(handle_mem);
+	}
+
+	zspage_read_unlock(zspage);
+}
+EXPORT_SYMBOL_GPL(zs_obj_read_end);
+
+void zs_obj_write(struct zs_pool *pool, unsigned long handle,
+		  void *handle_mem, size_t mem_len)
+{
+	struct zspage *zspage;
+	struct zpdesc *zpdesc;
+	unsigned long obj, off;
+	unsigned int obj_idx;
+	struct size_class *class;
+
+	WARN_ON(in_interrupt());
+
+	/* Guarantee we can get zspage from handle safely */
+	read_lock(&pool->lock);
+	obj = handle_to_obj(handle);
+	obj_to_location(obj, &zpdesc, &obj_idx);
+	zspage = get_zspage(zpdesc);
+
+	/* Make sure migration doesn't move any pages in this zspage */
+	zspage_read_lock(zspage);
+	read_unlock(&pool->lock);
+
+	class = zspage_class(pool, zspage);
+	off = offset_in_page(class->size * obj_idx);
+
+	if (off + class->size <= PAGE_SIZE) {
+		/* this object is contained entirely within a page */
+		void *dst = kmap_local_zpdesc(zpdesc);
+
+		if (!ZsHugePage(zspage))
+			off += ZS_HANDLE_SIZE;
+		memcpy(dst + off, handle_mem, mem_len);
+		kunmap_local(dst);
+	} else {
+		/* this object spans two pages */
+		size_t sizes[2];
+
+		off += ZS_HANDLE_SIZE;
+		sizes[0] = PAGE_SIZE - off;
+		sizes[1] = mem_len - sizes[0];
+
+		memcpy_to_page(zpdesc_page(zpdesc), off,
+			       handle_mem, sizes[0]);
+		zpdesc = get_next_zpdesc(zpdesc);
+		memcpy_to_page(zpdesc_page(zpdesc), 0,
+			       handle_mem + sizes[0], sizes[1]);
+	}
+
+	zspage_read_unlock(zspage);
+}
+EXPORT_SYMBOL_GPL(zs_obj_write);
+
 /**
  * zs_huge_class_size() - Returns the size (in bytes) of the first huge
  *                        zsmalloc &size_class.
