On (20/07/20 16:07), John Ogness wrote:
>
> +/* Determine if a logical position refers to a data-less block. */
> +#define LPOS_DATALESS(lpos) ((lpos) & 1UL)
> +
[..]
> @@ -1402,7 +1396,9 @@ static int prb_read(struct printk_ringbuffer *rb, u64 seq,
> /* Copy text data. If it fails, this is a data-less record. */
> if (!copy_data(&rb->text_data_ring, &desc.text_blk_lpos, desc.info.text_len,
> r->text_buf, r->text_buf_size, line_count)) {
> - return -ENOENT;
> + /* Report an error if there should have been data. */
> + if (desc.info.text_len != 0)
> + return -ENOENT;
> }
If this is a dataless record then should copy_data() return error?
Otherwise, looks good to me
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
-ss
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