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Make LockDatabaseObject() AcceptInvalidationMessages().

This is appropriate for the same reasons we already do it inLockSharedObject(): things might have changed while we were waitingfor the lock. There doesn't seem to be a live bug here at the moment,but that's mostly because it isn't currently used for very much.

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src/backend/storage/lmgr
- lmgr.c

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`‎src/backend/storage/lmgr/lmgr.c`

Lines changed: 4 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -8,7 +8,7 @@`
`8`	`8`	`*`
`9`	`9`	`*`
`10`	`10`	`* IDENTIFICATION`
`11`		`- * $PostgreSQL: pgsql/src/backend/storage/lmgr/lmgr.c,v 1.100 2010/01/02 16:57:52 momjian Exp $`
	`11`	`+ * $PostgreSQL: pgsql/src/backend/storage/lmgr/lmgr.c,v 1.101 2010/08/16 02:02:28 rhaas Exp $`
`12`	`12`	`*`
`13`	`13`	`*-------------------------------------------------------------------------`
`14`	`14`	`*/`
`@@ -599,6 +599,9 @@ LockDatabaseObject(Oid classid, Oid objid, uint16 objsubid,`
`599`	`599`	`objsubid);`
`600`	`600`
`601`	`601`	`(void)LockAcquire(&tag,lockmode, false, false);`
	`602`	`+`
	`603`	`+/* Make sure syscaches are up-to-date with any changes we waited for */`
	`604`	`+AcceptInvalidationMessages();`
`602`	`605`	`}`
`603`	`606`
`604`	`607`	`/*`

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Commit66b1403

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`‎src/backend/storage/lmgr/lmgr.c`

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