Revert "Fix comments in StrategyNotifyBgWriter()."

tatsuo-ishii · tatsuo-ishii · commit fb9d2ed6151d · 2017-01-24T10:29:04.000+09:00
This reverts commit a73cc3e, which tried to fix the comments to reflect the change of API of the function but actually the change had been made only for 9.5 or later.
diff --git a/src/backend/storage/buffer/freelist.c b/src/backend/storage/buffer/freelist.c
@@ -290,8 +290,8 @@ StrategySyncStart(uint32 *complete_passes, uint32 *num_buf_alloc)
 /*
  * StrategyNotifyBgWriter -- set or clear allocation notification latch
  *
- * If bgwprocno isn't -1, the next invocation of StrategyGetBuffer will
- * set that latch.  Pass -1 to clear the pending notification before it
+ * If bgwriterLatch isn't NULL, the next invocation of StrategyGetBuffer will
+ * set that latch.  Pass NULL to clear the pending notification before it
  * happens.  This feature is used by the bgwriter process to wake itself up
  * from hibernation, and is not meant for anybody else to use.
  */

Original file line number	Diff line number	Diff line change
`@@ -290,8 +290,8 @@ StrategySyncStart(uint32 complete_passes, uint32 num_buf_alloc)`
`290`	`290`	`/*`
`291`	`291`	`* StrategyNotifyBgWriter -- set or clear allocation notification latch`
`292`	`292`	`*`
`293`		`- * If bgwprocno isn't -1, the next invocation of StrategyGetBuffer will`
`294`		`- * set that latch. Pass -1 to clear the pending notification before it`
	`293`	`+ * If bgwriterLatch isn't NULL, the next invocation of StrategyGetBuffer will`
	`294`	`+ * set that latch. Pass NULL to clear the pending notification before it`
`295`	`295`	`* happens. This feature is used by the bgwriter process to wake itself up`
`296`	`296`	`* from hibernation, and is not meant for anybody else to use.`
`297`	`297`	`*/`