> +ssize_t vfs_iocb_iter_read(struct file *file, struct kiocb *iocb,
> + struct iov_iter *iter)
Fyi, vfs_iocb_iter_read() and vfs_iter_read() end up with the same checks:
if (!file->f_op->read_iter)
return -EINVAL;
if (!(file->f_mode & FMODE_READ))
return -EBADF;
if (!(file->f_mode & FMODE_CAN_READ))
return -EINVAL;
tot_len = iov_iter_count(iter);
if (!tot_len)
goto out;
ret = rw_verify_area(READ, file, &iocb->ki_pos, tot_len);
if (ret < 0)
return ret;
So if you resend you might want to static inline this. But idk, might
not matter too much.
