1 files changed, 18 insertions, 0 deletions

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 54ff465cf7cf..e6a9322a321f 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3124,6 +3124,24 @@ nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
         return status;
 }
 
+int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl)
+{
+        struct nfs_server *server = NFS_SERVER(state->inode);
+        struct nfs4_exception exception = { };
+        int err;
+
+        err = nfs4_set_lock_state(state, fl);
+        if (err != 0)
+                goto out;
+        do {
+                err = _nfs4_do_setlk(state, F_SETLK, fl, 0);
+                if (err != -NFS4ERR_DELAY)
+                        break;
+                err = nfs4_handle_exception(server, err, &exception);
+        } while (exception.retry);
+out:
+        return err;
+}
 
 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"