pgstat: slru: remove outdated comment

anarazel · anarazel · commit f4d3ca421d9c · 2022-07-06T15:57:29.000-07:00
That comment might have been true at some point during development, but
definitely isn't anymore.

Reported-By: Melanie Plageman &lt;melanieplageman@gmail.com&gt;
Backpatch: 15-
diff --git a/src/backend/utils/activity/pgstat_slru.c b/src/backend/utils/activity/pgstat_slru.c
@@ -147,9 +147,7 @@ pgstat_get_slru_index(const char *name)
  * Flush out locally pending SLRU stats entries
  *
  * If nowait is true, this function returns false on lock failure. Otherwise
- * this function always returns true. Writer processes are mutually excluded
- * using LWLock, but readers are expected to use change-count protocol to avoid
- * interference with writers.
+ * this function always returns true.
  *
  * If nowait is true, this function returns true if the lock could not be
  * acquired. Otherwise return false.

Original file line number	Diff line number	Diff line change
`@@ -147,9 +147,7 @@ pgstat_get_slru_index(const char *name)`
`147`	`147`	`* Flush out locally pending SLRU stats entries`
`148`	`148`	`*`
`149`	`149`	`* If nowait is true, this function returns false on lock failure. Otherwise`
`150`		`- * this function always returns true. Writer processes are mutually excluded`
`151`		`- * using LWLock, but readers are expected to use change-count protocol to avoid`
`152`		`- * interference with writers.`
	`150`	`+ * this function always returns true.`
`153`	`151`	`*`
`154`	`152`	`* If nowait is true, this function returns true if the lock could not be`
`155`	`153`	`* acquired. Otherwise return false.`