#include <linux/fs.h>
#include "blk.h"
-static struct inode *bdev_file_inode(struct file *file)
+static inline struct inode *bdev_file_inode(struct file *file)
{
return file->f_mapping->host;
}
static ssize_t __blkdev_direct_IO_simple(struct kiocb *iocb,
struct iov_iter *iter, unsigned int nr_pages)
{
- struct file *file = iocb->ki_filp;
- struct block_device *bdev = I_BDEV(bdev_file_inode(file));
+ struct block_device *bdev = iocb->ki_filp->private_data;
struct bio_vec inline_vecs[DIO_INLINE_BIO_VECS], *vecs;
loff_t pos = iocb->ki_pos;
bool should_dirty = false;
static ssize_t __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
unsigned int nr_pages)
{
- struct file *file = iocb->ki_filp;
- struct inode *inode = bdev_file_inode(file);
- struct block_device *bdev = I_BDEV(inode);
+ struct block_device *bdev = iocb->ki_filp->private_data;
struct blk_plug plug;
struct blkdev_dio *dio;
struct bio *bio;
static int blkdev_fsync(struct file *filp, loff_t start, loff_t end,
int datasync)
{
- struct inode *bd_inode = bdev_file_inode(filp);
- struct block_device *bdev = I_BDEV(bd_inode);
+ struct block_device *bdev = filp->private_data;
int error;
error = file_write_and_wait_range(filp, start, end);
bdev = blkdev_get_by_dev(inode->i_rdev, filp->f_mode, filp);
if (IS_ERR(bdev))
return PTR_ERR(bdev);
+
+ filp->private_data = bdev;
filp->f_mapping = bdev->bd_inode->i_mapping;
filp->f_wb_err = filemap_sample_wb_err(filp->f_mapping);
return 0;
static int blkdev_close(struct inode *inode, struct file *filp)
{
- struct block_device *bdev = I_BDEV(bdev_file_inode(filp));
+ struct block_device *bdev = filp->private_data;
blkdev_put(bdev, filp->f_mode);
return 0;
*/
static ssize_t blkdev_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
- struct file *file = iocb->ki_filp;
- struct inode *bd_inode = bdev_file_inode(file);
+ struct block_device *bdev = iocb->ki_filp->private_data;
+ struct inode *bd_inode = bdev->bd_inode;
loff_t size = i_size_read(bd_inode);
struct blk_plug plug;
size_t shorted = 0;
ssize_t ret;
- if (bdev_read_only(I_BDEV(bd_inode)))
+ if (bdev_read_only(bdev))
return -EPERM;
if (IS_SWAPFILE(bd_inode) && !is_hibernate_resume_dev(bd_inode->i_rdev))
static ssize_t blkdev_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
- struct file *file = iocb->ki_filp;
- struct inode *bd_inode = bdev_file_inode(file);
- loff_t size = i_size_read(bd_inode);
+ struct block_device *bdev = iocb->ki_filp->private_data;
+ loff_t size = i_size_read(bdev->bd_inode);
loff_t pos = iocb->ki_pos;
size_t shorted = 0;
ssize_t ret;