Re: [PATCH] Always report a writeback error once

Matthew Wilcox
2018-04-23T21:51:55Z

On Mon, Apr 23, 2018 at 02:43:48PM -0700, Matthew Wilcox wrote:
> On Mon, Apr 23, 2018 at 01:57:30PM -0700, Andres Freund wrote:
> > On 2018-04-23 13:42:08 -0700, Matthew Wilcox wrote:
> > > @@ -119,19 +119,11 @@ EXPORT_SYMBOL(errseq_set);
> > > errseq_t errseq_sample(errseq_t *eseq)
> > > {
> >
> > There's a comment above this:
> > *
> > * This function allows callers to sample an errseq_t value, marking it as
> > * "seen" if required.
>
> Oh, good catch. I'll fix that. Thanks!

How does this look?

@@ -111,27 +111,22 @@ EXPORT_SYMBOL(errseq_set);
* errseq_sample() - Grab current errseq_t value.
* @eseq: Pointer to errseq_t to be sampled.
*
- * This function allows callers to sample an errseq_t value, marking it as
- * "seen" if required.
+ * This function allows callers to initialise their errseq_t variable.
+ * If the error has been "seen", new callers will not see an old error.
+ * If there is an unseen error in @eseq, the caller of this function will
+ * see it the next time it checks for an error.
*
+ * Context: Any context.
* Return: The current errseq value.
*/
errseq_t errseq_sample(errseq_t *eseq)