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blkdev_aio_write() - turn into blkdev_write_iter()

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2014-04-03 03:21:50 -04:00
parent 8174202b34
commit 1456c0a87c
3 changed files with 9 additions and 14 deletions
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4
drivers/char/raw.c
View File

@ -286,8 +286,8 @@ static long raw_ctl_compat_ioctl(struct file *file, unsigned int cmd,
static const struct file_operations raw_fops = { static const struct file_operations raw_fops = {
.read = new_sync_read, .read = new_sync_read,
.read_iter = generic_file_read_iter, .read_iter = generic_file_read_iter,
.write = do_sync_write, .write = new_sync_write,
.aio_write = blkdev_aio_write, .write_iter = blkdev_write_iter,
.fsync = blkdev_fsync, .fsync = blkdev_fsync,
.open = raw_open, .open = raw_open,
.release = raw_release, .release = raw_release,

16
fs/block_dev.c
View File

@ -1509,28 +1509,24 @@ static long block_ioctl(struct file *file, unsigned cmd, unsigned long arg)
* Does not take i_mutex for the write and thus is not for general purpose * Does not take i_mutex for the write and thus is not for general purpose
* use. * use.
*/ */
ssize_t blkdev_aio_write(struct kiocb *iocb, const struct iovec *iov, ssize_t blkdev_write_iter(struct kiocb *iocb, struct iov_iter *from)
unsigned long nr_segs, loff_t pos)
{ {
struct file *file = iocb->ki_filp; struct file *file = iocb->ki_filp;
struct blk_plug plug; struct blk_plug plug;
ssize_t ret; ssize_t ret;
BUG_ON(iocb->ki_pos != pos);
blk_start_plug(&plug); blk_start_plug(&plug);
ret = __generic_file_aio_write(iocb, iov, nr_segs); ret = __generic_file_write_iter(iocb, from);
if (ret > 0) { if (ret > 0) {
ssize_t err; ssize_t err;
err = generic_write_sync(file, iocb->ki_pos - ret, ret);
err = generic_write_sync(file, pos, ret);
if (err < 0) if (err < 0)
ret = err; ret = err;
} }
blk_finish_plug(&plug); blk_finish_plug(&plug);
return ret; return ret;
} }
EXPORT_SYMBOL_GPL(blkdev_aio_write); EXPORT_SYMBOL_GPL(blkdev_write_iter);
static ssize_t blkdev_read_iter(struct kiocb *iocb, struct iov_iter *to) static ssize_t blkdev_read_iter(struct kiocb *iocb, struct iov_iter *to)
{ {
@ -1577,9 +1573,9 @@ const struct file_operations def_blk_fops = {
.release = blkdev_close, .release = blkdev_close,
.llseek = block_llseek, .llseek = block_llseek,
.read = new_sync_read, .read = new_sync_read,
.write = do_sync_write, .write = new_sync_write,
.read_iter = blkdev_read_iter, .read_iter = blkdev_read_iter,
.aio_write = blkdev_aio_write, .write_iter = blkdev_write_iter,
.mmap = generic_file_mmap, .mmap = generic_file_mmap,
.fsync = blkdev_fsync, .fsync = blkdev_fsync,
.unlocked_ioctl = block_ioctl, .unlocked_ioctl = block_ioctl,

3
include/linux/fs.h
View File

@ -2425,8 +2425,7 @@ extern ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, lo
extern ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos); extern ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos);
/* fs/block_dev.c */ /* fs/block_dev.c */
extern ssize_t blkdev_aio_write(struct kiocb *iocb, const struct iovec *iov, extern ssize_t blkdev_write_iter(struct kiocb *iocb, struct iov_iter *from);
unsigned long nr_segs, loff_t pos);
extern int blkdev_fsync(struct file *filp, loff_t start, loff_t end, extern int blkdev_fsync(struct file *filp, loff_t start, loff_t end,
int datasync); int datasync);
extern void block_sync_page(struct page *page); extern void block_sync_page(struct page *page);