direct-io.c File Reference

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/highmem.h>
#include <linux/pagemap.h>
#include <linux/task_io_accounting_ops.h>
#include <linux/bio.h>
#include <linux/wait.h>
#include <linux/err.h>
#include <linux/blkdev.h>
#include <linux/buffer_head.h>
#include <linux/rwsem.h>
#include <linux/uio.h>
#include <linux/atomic.h>
#include <linux/prefetch.h>

Go to the source code of this file.

Data Structures
struct	dio_submit
struct	dio

Macros
#define	DIO_PAGES   64

Functions
void	dio_end_io (struct bio *bio, int error)
	EXPORT_SYMBOL_GPL (dio_end_io)
ssize_t	__blockdev_direct_IO (int rw, struct kiocb *iocb, struct inode *inode, struct block_device *bdev, const struct iovec *iov, loff_t offset, unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io, dio_submit_t submit_io, int flags)
	EXPORT_SYMBOL (__blockdev_direct_IO)

Variables
struct dio	____cacheline_aligned_in_smp

Macro Definition Documentation

#define DIO_PAGES   64

Definition at line 45 of file direct-io.c.

Function Documentation

ssize_t __blockdev_direct_IO	(	int	rw,
		struct kiocb *	iocb,
		struct inode *	inode,
		struct block_device *	bdev,
		const struct iovec *	iov,
		loff_t	offset,
		unsigned long	nr_segs,
		get_block_t	get_block,
		dio_iodone_t	end_io,
		dio_submit_t	submit_io,
		int	flags
	)

Definition at line 1285 of file direct-io.c.

void dio_end_io	(	struct bio *	bio,
		int	error
	)

dio_end_io - handle the end io action for the given bio : The direct io bio thats being completed : Error if there was one

This is meant to be called by any filesystem that uses their own dio_submit_t so that the DIO specific endio actions are dealt with after the filesystem has done it's completion work.

Definition at line 326 of file direct-io.c.

EXPORT_SYMBOL

(

__blockdev_direct_IO

)

EXPORT_SYMBOL_GPL

(

dio_end_io

)

Variable Documentation

struct dio ____cacheline_aligned_in_smp