fs: simplify the blockdev_direct_IO prototype

Simple filesystems always pass inode->i_sb_bdev as the block device
argument, and never need a end_io handler.  Let's simply things for
them and for my grepping activity by dropping these arguments.  The
only thing not falling into that scheme is ext4, which passes and
end_io handler without needing special flags (yet), but given how
messy the direct I/O code there is use of __blockdev_direct_IO
in one instead of two out of three cases isn't going to make a large
difference anyway.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig 2011-06-24 14:29:47 -04:00 committed by Al Viro
parent df2d6f2658
commit aacfc19c62
10 changed files with 26 additions and 29 deletions

View file

@ -843,8 +843,8 @@ ext2_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
struct inode *inode = mapping->host;
ssize_t ret;
ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev,
iov, offset, nr_segs, ext2_get_block, NULL);
ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
ext2_get_block);
if (ret < 0 && (rw & WRITE))
ext2_write_failed(mapping, offset + iov_length(iov, nr_segs));
return ret;

View file

@ -1816,9 +1816,8 @@ static ssize_t ext3_direct_IO(int rw, struct kiocb *iocb,
}
retry:
ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
offset, nr_segs,
ext3_get_block, NULL);
ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
ext3_get_block);
/*
* In case of error extending write may have instantiated a few
* blocks outside i_size. Trim these off again.

View file

@ -3501,10 +3501,8 @@ static ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb,
offset, nr_segs,
ext4_get_block, NULL, NULL, 0);
else {
ret = blockdev_direct_IO(rw, iocb, inode,
inode->i_sb->s_bdev, iov,
offset, nr_segs,
ext4_get_block, NULL);
ret = blockdev_direct_IO(rw, iocb, inode, iov,
offset, nr_segs, ext4_get_block);
if (unlikely((rw & WRITE) && ret < 0)) {
loff_t isize = i_size_read(inode);
@ -3748,11 +3746,13 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb,
EXT4_I(inode)->cur_aio_dio = iocb->private;
}
ret = blockdev_direct_IO(rw, iocb, inode,
ret = __blockdev_direct_IO(rw, iocb, inode,
inode->i_sb->s_bdev, iov,
offset, nr_segs,
ext4_get_block_write,
ext4_end_io_dio);
ext4_end_io_dio,
NULL,
DIO_LOCKING | DIO_SKIP_HOLES);
if (iocb->private)
EXT4_I(inode)->cur_aio_dio = NULL;
/*

View file

@ -211,8 +211,8 @@ static ssize_t fat_direct_IO(int rw, struct kiocb *iocb,
* FAT need to use the DIO_LOCKING for avoiding the race
* condition of fat_get_block() and ->truncate().
*/
ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev,
iov, offset, nr_segs, fat_get_block, NULL);
ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
fat_get_block);
if (ret < 0 && (rw & WRITE))
fat_write_failed(mapping, offset + iov_length(iov, nr_segs));

View file

@ -123,8 +123,8 @@ static ssize_t hfs_direct_IO(int rw, struct kiocb *iocb,
struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
ssize_t ret;
ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
offset, nr_segs, hfs_get_block, NULL);
ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
hfs_get_block);
/*
* In case of error extending write may have instantiated a few

View file

@ -119,8 +119,8 @@ static ssize_t hfsplus_direct_IO(int rw, struct kiocb *iocb,
struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
ssize_t ret;
ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
offset, nr_segs, hfsplus_get_block, NULL);
ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
hfsplus_get_block);
/*
* In case of error extending write may have instantiated a few

View file

@ -329,8 +329,8 @@ static ssize_t jfs_direct_IO(int rw, struct kiocb *iocb,
struct inode *inode = file->f_mapping->host;
ssize_t ret;
ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
offset, nr_segs, jfs_get_block, NULL);
ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
jfs_get_block);
/*
* In case of error extending write may have instantiated a few

View file

@ -259,8 +259,8 @@ nilfs_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
return 0;
/* Needs synchronization with the cleaner */
size = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
offset, nr_segs, nilfs_get_block, NULL);
size = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
nilfs_get_block);
/*
* In case of error extending write may have instantiated a few

View file

@ -3068,9 +3068,8 @@ static ssize_t reiserfs_direct_IO(int rw, struct kiocb *iocb,
struct inode *inode = file->f_mapping->host;
ssize_t ret;
ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
offset, nr_segs,
reiserfs_get_blocks_direct_io, NULL);
ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
reiserfs_get_blocks_direct_io);
/*
* In case of error extending write may have instantiated a few

View file

@ -2418,12 +2418,11 @@ ssize_t __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
dio_submit_t submit_io, int flags);
static inline 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)
struct inode *inode, const struct iovec *iov, loff_t offset,
unsigned long nr_segs, get_block_t get_block)
{
return __blockdev_direct_IO(rw, iocb, inode, bdev, iov, offset,
nr_segs, get_block, end_io, NULL,
return __blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
offset, nr_segs, get_block, NULL, NULL,
DIO_LOCKING | DIO_SKIP_HOLES);
}
#endif