+#define PNFS_LAYOUTSTATS_MAXSIZE 256
+
+struct nfs42_layoutstat_args;
+struct nfs42_layoutstat_devinfo;
+typedef void (*layoutstats_encode_t)(struct xdr_stream *,
+ struct nfs42_layoutstat_args *,
+ struct nfs42_layoutstat_devinfo *);
+
+/* Per file per deviceid layoutstats */
+struct nfs42_layoutstat_devinfo {
+ struct nfs4_deviceid dev_id;
+ __u64 offset;
+ __u64 length;
+ __u64 read_count;
+ __u64 read_bytes;
+ __u64 write_count;
+ __u64 write_bytes;
+ __u32 layout_type;
+ layoutstats_encode_t layoutstats_encode;
+ void *layout_private;
+};
+
+struct nfs42_layoutstat_args {
+ struct nfs4_sequence_args seq_args;
+ struct nfs_fh *fh;
+ struct inode *inode;
+ nfs4_stateid stateid;
+ int num_dev;
+ struct nfs42_layoutstat_devinfo *devinfo;
+};
+
+struct nfs42_layoutstat_res {
+ struct nfs4_sequence_res seq_res;
+ int num_dev;
+ int rpc_status;
+};
+
+struct nfs42_layoutstat_data {
+ struct inode *inode;
+ struct nfs42_layoutstat_args args;
+ struct nfs42_layoutstat_res res;
+};
+
+struct nfs42_clone_args {
+ struct nfs4_sequence_args seq_args;
+ struct nfs_fh *src_fh;
+ struct nfs_fh *dst_fh;
+ nfs4_stateid src_stateid;
+ nfs4_stateid dst_stateid;
+ __u64 src_offset;
+ __u64 dst_offset;
+ __u64 count;
+ const u32 *dst_bitmask;
+};
+
+struct nfs42_clone_res {
+ struct nfs4_sequence_res seq_res;
+ unsigned int rpc_status;
+ struct nfs_fattr *dst_fattr;
+ const struct nfs_server *server;
+};
+