#include <linux/semaphore.h>
#include <linux/seqlock.h>
#include <linux/shrinker.h>
+#include <linux/srcu.h>
#include <linux/types.h>
#include <linux/workqueue.h>
#include <linux/zstd.h>
mempool_t btree_iters_pool;
struct btree_iter_buf __percpu *btree_iters_bufs;
+ struct srcu_struct btree_trans_barrier;
+
struct btree_key_cache btree_key_cache;
struct workqueue_struct *wq;