1 files changed, 19 insertions, 0 deletions

diff --git a/fs/nfs/callback.h b/fs/nfs/callback.h
index b678e3e15bd9..f6768ac09190 100644
--- a/fs/nfs/callback.h
+++ b/fs/nfs/callback.h
@@ -138,6 +138,25 @@ extern __be32 nfs4_callback_recallslot(struct cb_recallslotargs *args,
                                          void *dummy,
                                          struct cb_process_state *cps);
 
+struct cb_layoutrecallargs {
+        struct sockaddr         *cbl_addr;
+        uint32_t                cbl_recall_type;
+        uint32_t                cbl_layout_type;
+        uint32_t                cbl_layoutchanged;
+        union {
+                struct {
+                        struct nfs_fh           cbl_fh;
+                        struct pnfs_layout_range cbl_range;
+                        nfs4_stateid            cbl_stateid;
+                };
+                struct nfs_fsid         cbl_fsid;
+        };
+};
+
+extern unsigned nfs4_callback_layoutrecall(
+        struct cb_layoutrecallargs *args,
+        void *dummy, struct cb_process_state *cps);
+
 extern void nfs4_check_drain_bc_complete(struct nfs4_session *ses);
 extern void nfs4_cb_take_slot(struct nfs_client *clp);
 #endif /* CONFIG_NFS_V4_1 */