return _nfs4_do_setlk(state, F_SETLK, request, 0); 
struct nfs_server *server = NFS_SERVER(state->inode); struct nfs4_exception exception = { }; int err;  do { err = _nfs4_do_setlk(state, F_SETLK, request, 0); if (err != -NFS4ERR_DELAY) break; nfs4_handle_exception(server, err, &exception); } while (exception.retry); return err; 
static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request){	return _nfs4_do_setlk(state, F_SETLK, request, 0);}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/202b50dc127cf4714ffdcc6a64f1648373f9414f/nfs4proc.c/clean/fs/nfs/nfs4proc.c