NR_OPEN_DEFAULT 291 fs/file.c new_fdt->max_fds = NR_OPEN_DEFAULT; NR_OPEN_DEFAULT 453 fs/file.c .max_fds = NR_OPEN_DEFAULT, NR_OPEN_DEFAULT 66 include/linux/fdtable.h struct file __rcu * fd_array[NR_OPEN_DEFAULT];