diff --git a/drivers/char/raw.c b/drivers/char/raw.c index 0102dc788608..a24891b97547 100644 --- a/drivers/char/raw.c +++ b/drivers/char/raw.c @@ -285,7 +285,7 @@ static long raw_ctl_compat_ioctl(struct file *file, unsigned int cmd, static const struct file_operations raw_fops = { .read = new_sync_read, - .read_iter = generic_file_read_iter, + .read_iter = blkdev_read_iter, .write = new_sync_write, .write_iter = blkdev_write_iter, .fsync = blkdev_fsync, diff --git a/fs/block_dev.c b/fs/block_dev.c index cc9d4114cda0..1d9c9f3754f8 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1585,7 +1585,7 @@ ssize_t blkdev_write_iter(struct kiocb *iocb, struct iov_iter *from) } EXPORT_SYMBOL_GPL(blkdev_write_iter); -static ssize_t blkdev_read_iter(struct kiocb *iocb, struct iov_iter *to) +ssize_t blkdev_read_iter(struct kiocb *iocb, struct iov_iter *to) { struct file *file = iocb->ki_filp; struct inode *bd_inode = file->f_mapping->host; @@ -1599,6 +1599,7 @@ static ssize_t blkdev_read_iter(struct kiocb *iocb, struct iov_iter *to) iov_iter_truncate(to, size); return generic_file_read_iter(iocb, to); } +EXPORT_SYMBOL_GPL(blkdev_read_iter); /* * Try to release a page associated with block device when the system diff --git a/include/linux/fs.h b/include/linux/fs.h index 01036262095f..9ab779e8a63c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2469,6 +2469,7 @@ 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); /* fs/block_dev.c */ +extern ssize_t blkdev_read_iter(struct kiocb *iocb, struct iov_iter *to); extern ssize_t blkdev_write_iter(struct kiocb *iocb, struct iov_iter *from); extern int blkdev_fsync(struct file *filp, loff_t start, loff_t end, int datasync);