tag	line	file	source code
rdwr_pipe_fops	14	fs/fifo.c	extern struct file_operations rdwr_pipe_fops;
rdwr_pipe_fops	92	fs/fifo.c	filp->f_op = &rdwr_pipe_fops;
rdwr_pipe_fops	202	fs/pipe.c	struct file_operations rdwr_pipe_fops = {