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direct-io: eliminate the offset argument to ->direct_IO 

Including blkdev_direct_IO and dax_do_io.  It has to be ki_pos to actually
work, so eliminate the superflous argument.

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 2016-04-07 08:51:58 -07:00 committed by Al Viro
parent 13712713ca
commit c8b8e32d70
37 changed files with 99 additions and 112 deletions
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2
Documentation/filesystems/Locking
View File

@ -194,7 +194,7 @@ prototypes:
void (*invalidatepage) (struct page *, unsigned int, unsigned int);
int (*releasepage) (struct page *, int);
void (*freepage)(struct page *);
int (*direct_IO)(struct kiocb *, struct iov_iter *iter, loff_t offset);
int (*direct_IO)(struct kiocb *, struct iov_iter *iter);
int (*migratepage)(struct address_space *, struct page *, struct page *);
int (*launder_page)(struct page *);
int (*is_partially_uptodate)(struct page *, unsigned long, unsigned long);

2
Documentation/filesystems/vfs.txt
View File

@ -591,7 +591,7 @@ struct address_space_operations {
void (*invalidatepage) (struct page *, unsigned int, unsigned int);
int (*releasepage) (struct page *, int);
void (*freepage)(struct page *);
ssize_t (*direct_IO)(struct kiocb *, struct iov_iter *iter, loff_t offset);
ssize_t (*direct_IO)(struct kiocb *, struct iov_iter *iter);
/* migrate the contents of a page to the specified target */
int (*migratepage) (struct page *, struct page *);
int (*launder_page) (struct page *);

4
drivers/staging/lustre/lustre/llite/rw26.c
View File

@ -358,14 +358,14 @@ static ssize_t ll_direct_IO_26_seg(const struct lu_env *env, struct cl_io *io,
*/
#define MAX_DIO_SIZE ((KMALLOC_MAX_SIZE / sizeof(struct brw_page) * \
PAGE_SIZE) & ~(DT_MAX_BRW_SIZE - 1))
static ssize_t ll_direct_IO_26(struct kiocb *iocb, struct iov_iter *iter,
loff_t file_offset)
static ssize_t ll_direct_IO_26(struct kiocb *iocb, struct iov_iter *iter)
{
struct lu_env *env;
struct cl_io *io;
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
struct ccc_object *obj = cl_inode2ccc(inode);
loff_t file_offset = iocb->ki_pos;
ssize_t count = iov_iter_count(iter);
ssize_t tot_bytes = 0, result = 0;
struct ll_inode_info *lli = ll_i2info(inode);

3
fs/9p/vfs_addr.c
View File

@ -245,9 +245,10 @@ static int v9fs_launder_page(struct page *page)
*
*/
static ssize_t
v9fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t pos)
v9fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
loff_t pos = iocb->ki_pos;
ssize_t n;
int err = 0;
if (iov_iter_rw(iter) == WRITE) {

5
fs/affs/file.c
View File

@ -389,12 +389,13 @@ static void affs_write_failed(struct address_space *mapping, loff_t to)
}
static ssize_t
affs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset)
affs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct address_space *mapping = file->f_mapping;
struct inode *inode = mapping->host;
size_t count = iov_iter_count(iter);
loff_t offset = iocb->ki_pos;
ssize_t ret;
if (iov_iter_rw(iter) == WRITE) {
@ -404,7 +405,7 @@ affs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset)
return 0;
}
ret = blockdev_direct_IO(iocb, inode, iter, offset, affs_get_block);
ret = blockdev_direct_IO(iocb, inode, iter, affs_get_block);
if (ret < 0 && iov_iter_rw(iter) == WRITE)
affs_write_failed(mapping, offset + count);
return ret;

6
fs/block_dev.c
View File

@ -162,15 +162,15 @@ static struct inode *bdev_file_inode(struct file *file)
}
static ssize_t
blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset)
blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct inode *inode = bdev_file_inode(file);
if (IS_DAX(inode))
return dax_do_io(iocb, inode, iter, offset, blkdev_get_block,
return dax_do_io(iocb, inode, iter, blkdev_get_block,
NULL, DIO_SKIP_DIO_COUNT);
return __blockdev_direct_IO(iocb, inode, I_BDEV(inode), iter, offset,
return __blockdev_direct_IO(iocb, inode, I_BDEV(inode), iter,
blkdev_get_block, NULL, NULL,
DIO_SKIP_DIO_COUNT);
}

6
fs/btrfs/inode.c
View File

@ -8541,13 +8541,13 @@ out:
return retval;
}
static ssize_t btrfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
static ssize_t btrfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_dio_data dio_data = { 0 };
loff_t offset = iocb->ki_pos;
size_t count = 0;
int flags = 0;
bool wakeup = true;
@ -8607,7 +8607,7 @@ static ssize_t btrfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
ret = __blockdev_direct_IO(iocb, inode,
BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev,
iter, offset, btrfs_get_blocks_direct, NULL,
iter, btrfs_get_blocks_direct, NULL,
btrfs_submit_direct, flags);
if (iov_iter_rw(iter) == WRITE) {
current->journal_info = NULL;

3
fs/ceph/addr.c
View File

@ -1292,8 +1292,7 @@ static int ceph_write_end(struct file *file, struct address_space *mapping,
* intercept O_DIRECT reads and writes early, this function should
* never get called.
*/
static ssize_t ceph_direct_io(struct kiocb *iocb, struct iov_iter *iter,
loff_t pos)
static ssize_t ceph_direct_io(struct kiocb *iocb, struct iov_iter *iter)
{
WARN_ON(1);
return -EINVAL;

2
fs/cifs/file.c
View File

@ -3854,7 +3854,7 @@ void cifs_oplock_break(struct work_struct *work)
* Direct IO is not yet supported in the cached mode.
*/
static ssize_t
cifs_direct_io(struct kiocb *iocb, struct iov_iter *iter, loff_t pos)
cifs_direct_io(struct kiocb *iocb, struct iov_iter *iter)
{
/*
* FIXME

4
fs/dax.c
View File

@ -244,7 +244,6 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter,
* @iocb: The control block for this I/O
* @inode: The file which the I/O is directed at
* @iter: The addresses to do I/O from or to
* @pos: The file offset where the I/O starts
* @get_block: The filesystem method used to translate file offsets to blocks
* @end_io: A filesystem callback for I/O completion
* @flags: See below
@ -257,11 +256,12 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter,
* is in progress.
*/
ssize_t dax_do_io(struct kiocb *iocb, struct inode *inode,
struct iov_iter *iter, loff_t pos, get_block_t get_block,
struct iov_iter *iter, get_block_t get_block,
dio_iodone_t end_io, int flags)
{
struct buffer_head bh;
ssize_t retval = -EINVAL;
loff_t pos = iocb->ki_pos;
loff_t end = pos + iov_iter_count(iter);
memset(&bh, 0, sizeof(bh));

7
fs/direct-io.c
View File

@ -1113,7 +1113,7 @@ static inline int drop_refcount(struct dio *dio)
static inline ssize_t
do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
struct block_device *bdev, struct iov_iter *iter,
loff_t offset, get_block_t get_block, dio_iodone_t end_io,
get_block_t get_block, dio_iodone_t end_io,
dio_submit_t submit_io, int flags)
{
unsigned i_blkbits = ACCESS_ONCE(inode->i_blkbits);
@ -1121,6 +1121,7 @@ do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
unsigned blocksize_mask = (1 << blkbits) - 1;
ssize_t retval = -EINVAL;
size_t count = iov_iter_count(iter);
loff_t offset = iocb->ki_pos;
loff_t end = offset + count;
struct dio *dio;
struct dio_submit sdio = { 0, };
@ -1328,7 +1329,7 @@ out:
ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
struct block_device *bdev, struct iov_iter *iter,
loff_t offset, get_block_t get_block,
get_block_t get_block,
dio_iodone_t end_io, dio_submit_t submit_io,
int flags)
{
@ -1344,7 +1345,7 @@ ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
prefetch(bdev->bd_queue);
prefetch((char *)bdev->bd_queue + SMP_CACHE_BYTES);
return do_blockdev_direct_IO(iocb, inode, bdev, iter, offset, get_block,
return do_blockdev_direct_IO(iocb, inode, bdev, iter, get_block,
end_io, submit_io, flags);
}

3
fs/exofs/inode.c
View File

@ -960,8 +960,7 @@ static void exofs_invalidatepage(struct page *page, unsigned int offset,
/* TODO: Should be easy enough to do proprly */
static ssize_t exofs_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
static ssize_t exofs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
return 0;
}

8
fs/ext2/inode.c
View File

@ -854,20 +854,20 @@ static sector_t ext2_bmap(struct address_space *mapping, sector_t block)
}
static ssize_t
ext2_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset)
ext2_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct address_space *mapping = file->f_mapping;
struct inode *inode = mapping->host;
size_t count = iov_iter_count(iter);
loff_t offset = iocb->ki_pos;
ssize_t ret;
if (IS_DAX(inode))
ret = dax_do_io(iocb, inode, iter, offset, ext2_get_block, NULL,
ret = dax_do_io(iocb, inode, iter, ext2_get_block, NULL,
DIO_LOCKING);
else
ret = blockdev_direct_IO(iocb, inode, iter, offset,
ext2_get_block);
ret = blockdev_direct_IO(iocb, inode, iter, ext2_get_block);
if (ret < 0 && iov_iter_rw(iter) == WRITE)
ext2_write_failed(mapping, offset + count);
return ret;

3
fs/ext4/ext4.h
View File

@ -2581,8 +2581,7 @@ extern int ext4_get_next_extent(struct inode *inode, ext4_lblk_t lblk,
/* indirect.c */
extern int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
struct ext4_map_blocks *map, int flags);
extern ssize_t ext4_ind_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset);
extern ssize_t ext4_ind_direct_IO(struct kiocb *iocb, struct iov_iter *iter);
extern int ext4_ind_calc_metadata_amount(struct inode *inode, sector_t lblock);
extern int ext4_ind_trans_blocks(struct inode *inode, int nrblocks);
extern void ext4_ind_truncate(handle_t *, struct inode *inode);

12
fs/ext4/indirect.c
View File

@ -659,12 +659,12 @@ out:
* crashes then stale disk data _may_ be exposed inside the file. But current
* VFS code falls back into buffered path in that case so we are safe.
*/
ssize_t ext4_ind_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
ssize_t ext4_ind_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
struct ext4_inode_info *ei = EXT4_I(inode);
loff_t offset = iocb->ki_pos;
handle_t *handle;
ssize_t ret;
int orphan = 0;
@ -707,21 +707,21 @@ retry:
goto locked;
}
if (IS_DAX(inode))
ret = dax_do_io(iocb, inode, iter, offset,
ret = dax_do_io(iocb, inode, iter,
ext4_dio_get_block, NULL, 0);
else
ret = __blockdev_direct_IO(iocb, inode,
inode->i_sb->s_bdev, iter,
offset, ext4_dio_get_block,
ext4_dio_get_block,
NULL, NULL, 0);
inode_dio_end(inode);
} else {
locked:
if (IS_DAX(inode))
ret = dax_do_io(iocb, inode, iter, offset,
ret = dax_do_io(iocb, inode, iter,
ext4_dio_get_block, NULL, DIO_LOCKING);
else
ret = blockdev_direct_IO(iocb, inode, iter, offset,
ret = blockdev_direct_IO(iocb, inode, iter,
ext4_dio_get_block);
if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) {

18
fs/ext4/inode.c
View File

@ -3334,12 +3334,12 @@ static int ext4_end_io_dio(struct kiocb *iocb, loff_t offset,
* if the machine crashes during the write.
*
*/
static ssize_t ext4_ext_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
static ssize_t ext4_ext_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
ssize_t ret;
loff_t offset = iocb->ki_pos;
size_t count = iov_iter_count(iter);
int overwrite = 0;
get_block_t *get_block_func = NULL;
@ -3348,7 +3348,7 @@ static ssize_t ext4_ext_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
/* Use the old path for reads and writes beyond i_size. */
if (iov_iter_rw(iter) != WRITE || final_size > inode->i_size)
return ext4_ind_direct_IO(iocb, iter, offset);
return ext4_ind_direct_IO(iocb, iter);
BUG_ON(iocb->private == NULL);
@ -3400,11 +3400,11 @@ static ssize_t ext4_ext_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
BUG_ON(ext4_encrypted_inode(inode) && S_ISREG(inode->i_mode));
#endif
if (IS_DAX(inode))
ret = dax_do_io(iocb, inode, iter, offset, get_block_func,
ret = dax_do_io(iocb, inode, iter, get_block_func,
ext4_end_io_dio, dio_flags);
else
ret = __blockdev_direct_IO(iocb, inode,
inode->i_sb->s_bdev, iter, offset,
inode->i_sb->s_bdev, iter,
get_block_func,
ext4_end_io_dio, NULL, dio_flags);
@ -3431,12 +3431,12 @@ static ssize_t ext4_ext_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
return ret;
}
static ssize_t ext4_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
static ssize_t ext4_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
size_t count = iov_iter_count(iter);
loff_t offset = iocb->ki_pos;
ssize_t ret;
#ifdef CONFIG_EXT4_FS_ENCRYPTION
@ -3456,9 +3456,9 @@ static ssize_t ext4_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
trace_ext4_direct_IO_enter(inode, offset, count, iov_iter_rw(iter));
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
ret = ext4_ext_direct_IO(iocb, iter, offset);
ret = ext4_ext_direct_IO(iocb, iter);
else
ret = ext4_ind_direct_IO(iocb, iter, offset);
ret = ext4_ind_direct_IO(iocb, iter);
trace_ext4_direct_IO_exit(inode, offset, count, iov_iter_rw(iter), ret);
return ret;
}

6
fs/f2fs/data.c
View File

@ -1655,12 +1655,12 @@ static int check_direct_IO(struct inode *inode, struct iov_iter *iter,
return 0;
}
static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct address_space *mapping = iocb->ki_filp->f_mapping;
struct inode *inode = mapping->host;
size_t count = iov_iter_count(iter);
loff_t offset = iocb->ki_pos;
int err;
err = check_direct_IO(inode, iter, offset);
@ -1672,7 +1672,7 @@ static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
trace_f2fs_direct_IO_enter(inode, offset, count, iov_iter_rw(iter));
err = blockdev_direct_IO(iocb, inode, iter, offset, get_data_block_dio);
err = blockdev_direct_IO(iocb, inode, iter, get_data_block_dio);
if (err < 0 && iov_iter_rw(iter) == WRITE)
f2fs_write_failed(mapping, offset + count);

6
fs/fat/inode.c
View File

@ -244,13 +244,13 @@ static int fat_write_end(struct file *file, struct address_space *mapping,
return err;
}
static ssize_t fat_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
static ssize_t fat_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct address_space *mapping = file->f_mapping;
struct inode *inode = mapping->host;
size_t count = iov_iter_count(iter);
loff_t offset = iocb->ki_pos;
ssize_t ret;
if (iov_iter_rw(iter) == WRITE) {
@ -272,7 +272,7 @@ static ssize_t fat_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
* FAT need to use the DIO_LOCKING for avoiding the race
* condition of fat_get_block() and ->truncate().
*/
ret = blockdev_direct_IO(iocb, inode, iter, offset, fat_get_block);
ret = blockdev_direct_IO(iocb, inode, iter, fat_get_block);
if (ret < 0 && iov_iter_rw(iter) == WRITE)
fat_write_failed(mapping, offset + count);

3
fs/fuse/file.c
View File

@ -2837,7 +2837,7 @@ static inline loff_t fuse_round_up(loff_t off)
}
static ssize_t
fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset)
fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
DECLARE_COMPLETION_ONSTACK(wait);
ssize_t ret = 0;
@ -2848,6 +2848,7 @@ fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset)
struct inode *inode;
loff_t i_size;
size_t count = iov_iter_count(iter);
loff_t offset = iocb->ki_pos;
struct fuse_io_priv *io;
bool is_sync = is_sync_kiocb(iocb);

6
fs/gfs2/aops.c
View File

@ -1042,13 +1042,13 @@ static int gfs2_ok_for_dio(struct gfs2_inode *ip, loff_t offset)
static ssize_t gfs2_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
static ssize_t gfs2_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
struct address_space *mapping = inode->i_mapping;
struct gfs2_inode *ip = GFS2_I(inode);
loff_t offset = iocb->ki_pos;
struct gfs2_holder gh;
int rv;
@ -1099,7 +1099,7 @@ static ssize_t gfs2_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
}
rv = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, iter,
offset, gfs2_get_block_direct, NULL, NULL, 0);
gfs2_get_block_direct, NULL, NULL, 0);
out:
gfs2_glock_dq(&gh);
gfs2_holder_uninit(&gh);

7
fs/hfs/inode.c
View File

@ -124,8 +124,7 @@ static int hfs_releasepage(struct page *page, gfp_t mask)
return res ? try_to_free_buffers(page) : 0;
}
static ssize_t hfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
static ssize_t hfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct address_space *mapping = file->f_mapping;
@ -133,7 +132,7 @@ static ssize_t hfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
size_t count = iov_iter_count(iter);
ssize_t ret;
ret = blockdev_direct_IO(iocb, inode, iter, offset, hfs_get_block);
ret = blockdev_direct_IO(iocb, inode, iter, hfs_get_block);
/*
* In case of error extending write may have instantiated a few
@ -141,7 +140,7 @@ static ssize_t hfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
*/
if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) {
loff_t isize = i_size_read(inode);
loff_t end = offset + count;
loff_t end = iocb->ki_pos + count;
if (end > isize)
hfs_write_failed(mapping, end);

7
fs/hfsplus/inode.c
View File

@ -122,8 +122,7 @@ static int hfsplus_releasepage(struct page *page, gfp_t mask)
return res ? try_to_free_buffers(page) : 0;
}
static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct address_space *mapping = file->f_mapping;
@ -131,7 +130,7 @@ static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
size_t count = iov_iter_count(iter);
ssize_t ret;
ret = blockdev_direct_IO(iocb, inode, iter, offset, hfsplus_get_block);
ret = blockdev_direct_IO(iocb, inode, iter, hfsplus_get_block);
/*
* In case of error extending write may have instantiated a few
@ -139,7 +138,7 @@ static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
*/
if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) {
loff_t isize = i_size_read(inode);
loff_t end = offset + count;
loff_t end = iocb->ki_pos + count;
if (end > isize)
hfsplus_write_failed(mapping, end);

7
fs/jfs/inode.c
View File

@ -332,8 +332,7 @@ static sector_t jfs_bmap(struct address_space *mapping, sector_t block)
return generic_block_bmap(mapping, block, jfs_get_block);
}
static ssize_t jfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
static ssize_t jfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct address_space *mapping = file->f_mapping;
@ -341,7 +340,7 @@ static ssize_t jfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
size_t count = iov_iter_count(iter);
ssize_t ret;
ret = blockdev_direct_IO(iocb, inode, iter, offset, jfs_get_block);
ret = blockdev_direct_IO(iocb, inode, iter, jfs_get_block);
/*
* In case of error extending write may have instantiated a few
@ -349,7 +348,7 @@ static ssize_t jfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
*/
if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) {
loff_t isize = i_size_read(inode);
loff_t end = offset + count;
loff_t end = iocb->ki_pos + count;
if (end > isize)
jfs_write_failed(mapping, end);

17
fs/nfs/direct.c
View File

@ -250,7 +250,7 @@ static int nfs_direct_cmp_commit_data_verf(struct nfs_direct_req *dreq,
* shunt off direct read and write requests before the VFS gets them,
* so this method is only ever called for swap.
*/
ssize_t nfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t pos)
ssize_t nfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct inode *inode = iocb->ki_filp->f_mapping->host;
@ -261,7 +261,7 @@ ssize_t nfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t pos)
VM_BUG_ON(iov_iter_count(iter) != PAGE_SIZE);
if (iov_iter_rw(iter) == READ)
return nfs_file_direct_read(iocb, iter, pos);
return nfs_file_direct_read(iocb, iter);
return nfs_file_direct_write(iocb, iter);
}
@ -545,7 +545,6 @@ static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq,
* nfs_file_direct_read - file direct read operation for NFS files
* @iocb: target I/O control block
* @iter: vector of user buffers into which to read data
* @pos: byte offset in file where reading starts
*
* We use this function for direct reads instead of calling
* generic_file_aio_read() in order to avoid gfar's check to see if
@ -561,8 +560,7 @@ static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq,
* client must read the updated atime from the server back into its
* cache.
*/
ssize_t nfs_file_direct_read(struct kiocb *iocb, struct iov_iter *iter,
loff_t pos)
ssize_t nfs_file_direct_read(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct address_space *mapping = file->f_mapping;
@ -574,7 +572,7 @@ ssize_t nfs_file_direct_read(struct kiocb *iocb, struct iov_iter *iter,
nfs_add_stats(mapping->host, NFSIOS_DIRECTREADBYTES, count);
dfprintk(FILE, "NFS: direct read(%pD2, %zd@%Ld)\n",
file, count, (long long) pos);
file, count, (long long) iocb->ki_pos);
result = 0;
if (!count)
@ -594,7 +592,7 @@ ssize_t nfs_file_direct_read(struct kiocb *iocb, struct iov_iter *iter,
dreq->inode = inode;
dreq->bytes_left = count;
dreq->io_start = pos;
dreq->io_start = iocb->ki_pos;
dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp));
l_ctx = nfs_get_lock_context(dreq->ctx);
if (IS_ERR(l_ctx)) {
@ -606,14 +604,14 @@ ssize_t nfs_file_direct_read(struct kiocb *iocb, struct iov_iter *iter,
dreq->iocb = iocb;
NFS_I(inode)->read_io += count;
result = nfs_direct_read_schedule_iovec(dreq, iter, pos);
result = nfs_direct_read_schedule_iovec(dreq, iter, iocb->ki_pos);
inode_unlock(inode);
if (!result) {
result = nfs_direct_wait(dreq);
if (result > 0)
iocb->ki_pos = pos + result;
iocb->ki_pos += result;
}
nfs_direct_req_release(dreq);
@ -969,7 +967,6 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq,
* nfs_file_direct_write - file direct write operation for NFS files
* @iocb: target I/O control block
* @iter: vector of user buffers from which to write data
* @pos: byte offset in file where writing starts
*
* We use this function for direct writes instead of calling
* generic_file_aio_write() in order to avoid taking the inode

2
fs/nfs/file.c
View File

@ -164,7 +164,7 @@ nfs_file_read(struct kiocb *iocb, struct iov_iter *to)
ssize_t result;
if (iocb->ki_flags & IOCB_DIRECT)
return nfs_file_direct_read(iocb, to, iocb->ki_pos);
return nfs_file_direct_read(iocb, to);
dprintk("NFS: read(%pD2, %zu@%lu)\n",
iocb->ki_filp,

4
fs/nilfs2/inode.c
View File

@ -305,7 +305,7 @@ static int nilfs_write_end(struct file *file, struct address_space *mapping,
}
static ssize_t
nilfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset)
nilfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct inode *inode = file_inode(iocb->ki_filp);
@ -313,7 +313,7 @@ nilfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset)
return 0;
/* Needs synchronization with the cleaner */
return blockdev_direct_IO(iocb, inode, iter, offset, nilfs_get_block);
return blockdev_direct_IO(iocb, inode, iter, nilfs_get_block);
}
const struct address_space_operations nilfs_aops = {

9
fs/ocfs2/aops.c
View File

@ -2423,13 +2423,11 @@ static int ocfs2_dio_end_io(struct kiocb *iocb,
return 0;
}
static ssize_t ocfs2_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
static ssize_t ocfs2_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file_inode(file)->i_mapping->host;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
loff_t end = offset + iter->count;
get_block_t *get_block;
/*
@ -2440,7 +2438,8 @@ static ssize_t ocfs2_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
return 0;
/* Fallback to buffered I/O if we do not support append dio. */
if (end > i_size_read(inode) && !ocfs2_supports_append_dio(osb))
if (iocb->ki_pos + iter->count > i_size_read(inode) &&
!ocfs2_supports_append_dio(osb))
return 0;
if (iov_iter_rw(iter) == READ)
@ -2449,7 +2448,7 @@ static ssize_t ocfs2_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
get_block = ocfs2_dio_get_block;
return __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev,
iter, offset, get_block,
iter, get_block,
ocfs2_dio_end_io, NULL, 0);
}

7
fs/reiserfs/inode.c
View File

@ -3279,15 +3279,14 @@ static int reiserfs_releasepage(struct page *page, gfp_t unused_gfp_flags)
* We thank Mingming Cao for helping us understand in great detail what
* to do in this section of the code.
*/
static ssize_t reiserfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
static ssize_t reiserfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
size_t count = iov_iter_count(iter);
ssize_t ret;
ret = blockdev_direct_IO(iocb, inode, iter, offset,
ret = blockdev_direct_IO(iocb, inode, iter,
reiserfs_get_blocks_direct_io);
/*
@ -3296,7 +3295,7 @@ static ssize_t reiserfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
*/
if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) {
loff_t isize = i_size_read(inode);
loff_t end = offset + count;
loff_t end = iocb->ki_pos + count;
if ((end > isize) && inode_newsize_ok(inode, isize) == 0) {
truncate_setsize(inode, isize);

3
fs/udf/file.c
View File

@ -99,8 +99,7 @@ static int udf_adinicb_write_begin(struct file *file,
return 0;
}
static ssize_t udf_adinicb_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
static ssize_t udf_adinicb_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
/* Fallback to buffered I/O. */
return 0;

7
fs/udf/inode.c
View File

@ -214,8 +214,7 @@ static int udf_write_begin(struct file *file, struct address_space *mapping,
return ret;
}
static ssize_t udf_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
static ssize_t udf_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct address_space *mapping = file->f_mapping;
@ -223,9 +222,9 @@ static ssize_t udf_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
size_t count = iov_iter_count(iter);
ssize_t ret;
ret = blockdev_direct_IO(iocb, inode, iter, offset, udf_get_block);
ret = blockdev_direct_IO(iocb, inode, iter, udf_get_block);
if (unlikely(ret < 0 && iov_iter_rw(iter) == WRITE))
udf_write_failed(mapping, offset + count);
udf_write_failed(mapping, iocb->ki_pos + count);
return ret;
}

7
fs/xfs/xfs_aops.c
View File

@ -1406,8 +1406,7 @@ xfs_end_io_direct_write(
STATIC ssize_t
xfs_vm_direct_IO(
struct kiocb *iocb,
struct iov_iter *iter,
loff_t offset)
struct iov_iter *iter)
{
struct inode *inode = iocb->ki_filp->f_mapping->host;
dio_iodone_t *endio = NULL;
@ -1420,12 +1419,12 @@ xfs_vm_direct_IO(
}
if (IS_DAX(inode)) {
return dax_do_io(iocb, inode, iter, offset,
return dax_do_io(iocb, inode, iter,
xfs_get_blocks_direct, endio, 0);
}
bdev = xfs_find_bdev_for_inode(inode);
return __blockdev_direct_IO(iocb, inode, bdev, iter, offset,
return __blockdev_direct_IO(iocb, inode, bdev, iter,
xfs_get_blocks_direct, endio, NULL, flags);
}

2
fs/xfs/xfs_file.c
View File

@ -794,7 +794,7 @@ xfs_file_dio_aio_write(
trace_xfs_file_direct_write(ip, count, iocb->ki_pos, 0);
data = *from;
ret = mapping->a_ops->direct_IO(iocb, &data, iocb->ki_pos);
ret = mapping->a_ops->direct_IO(iocb, &data);
/* see generic_file_direct_write() for why this is necessary */
if (mapping->nrpages) {

2
include/linux/dax.h
View File

@ -5,7 +5,7 @@
#include <linux/mm.h>
#include <asm/pgtable.h>
ssize_t dax_do_io(struct kiocb *, struct inode *, struct iov_iter *, loff_t,
ssize_t dax_do_io(struct kiocb *, struct inode *, struct iov_iter *,
get_block_t, dio_iodone_t, int flags);
int dax_clear_sectors(struct block_device *bdev, sector_t _sector, long _size);
int dax_zero_page_range(struct inode *, loff_t from, unsigned len, get_block_t);

9
include/linux/fs.h
View File

@ -394,7 +394,7 @@ struct address_space_operations {
void (*invalidatepage) (struct page *, unsigned int, unsigned int);
int (*releasepage) (struct page *, gfp_t);
void (*freepage)(struct page *);
ssize_t (*direct_IO)(struct kiocb *, struct iov_iter *iter, loff_t offset);
ssize_t (*direct_IO)(struct kiocb *, struct iov_iter *iter);
/*
* migrate the contents of a page to the specified target. If
* migrate_mode is MIGRATE_ASYNC, it must not block.
@ -2766,18 +2766,17 @@ void dio_end_io(struct bio *bio, int error);
ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
struct block_device *bdev, struct iov_iter *iter,
loff_t offset, get_block_t get_block,
get_block_t get_block,
dio_iodone_t end_io, dio_submit_t submit_io,
int flags);
static inline ssize_t blockdev_direct_IO(struct kiocb *iocb,
struct inode *inode,
struct iov_iter *iter, loff_t offset,
struct iov_iter *iter,
get_block_t get_block)
{
return __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, iter,
offset, get_block, NULL, NULL,
DIO_LOCKING | DIO_SKIP_HOLES);
get_block, NULL, NULL, DIO_LOCKING | DIO_SKIP_HOLES);
}
#endif

5
include/linux/nfs_fs.h
View File

@ -445,10 +445,9 @@ static inline struct rpc_cred *nfs_file_cred(struct file *file)
/*
* linux/fs/nfs/direct.c
*/
extern ssize_t nfs_direct_IO(struct kiocb *, struct iov_iter *, loff_t);
extern ssize_t nfs_direct_IO(struct kiocb *, struct iov_iter *);
extern ssize_t nfs_file_direct_read(struct kiocb *iocb,
struct iov_iter *iter,
loff_t pos);
struct iov_iter *iter);
extern ssize_t nfs_file_direct_write(struct kiocb *iocb,
struct iov_iter *iter);

5
mm/filemap.c
View File

@ -1853,8 +1853,7 @@ generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
iocb->ki_pos + count - 1);
if (!retval) {
struct iov_iter data = *iter;
retval = mapping->a_ops->direct_IO(iocb, &data,
iocb->ki_pos);
retval = mapping->a_ops->direct_IO(iocb, &data);
}
if (retval > 0) {
@ -2538,7 +2537,7 @@ generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from)
}
data = *from;
written = mapping->a_ops->direct_IO(iocb, &data, pos);
written = mapping->a_ops->direct_IO(iocb, &data);
/*
* Finally, try again to invalidate clean pages which might have been

2
mm/page_io.c
View File

@ -279,7 +279,7 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc,
set_page_writeback(page);
unlock_page(page);
ret = mapping->a_ops->direct_IO(&kiocb, &from, kiocb.ki_pos);
ret = mapping->a_ops->direct_IO(&kiocb, &from);
if (ret == PAGE_SIZE) {
count_vm_event(PSWPOUT);
ret = 0;