signalfd_fops     253 fs/signalfd.c  static const struct file_operations signalfd_fops = {
signalfd_fops     288 fs/signalfd.c  		ufd = anon_inode_getfd("[signalfd]", &signalfd_fops, ctx,
signalfd_fops     297 fs/signalfd.c  		if (f.file->f_op != &signalfd_fops) {