tag	line	file	source code
read_pipe_fops	12	fs/fifo.c	extern struct file_operations read_pipe_fops;
read_pipe_fops	29	fs/fifo.c	filp->f_op = &read_pipe_fops;
read_pipe_fops	176	fs/pipe.c	struct file_operations read_pipe_fops = {
read_pipe_fops	255	fs/pipe.c	f[0]->f_op = &read_pipe_fops;