tag	line	file	source code
IO_fn_t	185	fs/read_write.c	typedef int (*IO_fn_t)(struct inode *, struct file *, char *, int);
IO_fn_t	193	fs/read_write.c	IO_fn_t fn;
IO_fn_t	228	fs/read_write.c	fn = (IO_fn_t) file->f_op->write;