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Fix incomplete backpatch of pg_multixact truncation changes to <= 9.2

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The backpatch of a95335b544d9c8377e9dc7a399d8e9a155895f82 to 9.2, 9.1
and 9.0 was incomplete, missing changes to xlog.c, primarily the call
to TrimMultiXact(). Testing presumably didn't show a problem without
these changes because TrimMultiXact() performs defense-in-depth work,
which is not strictly necessary.

It also missed moving StartupMultiXact() which would have been
problematic if a restartpoing happened in exactly the wrong moment,
causing a transient error.

Andres Freund
This commit is contained in:
Alvaro Herrera
2013-12-02 13:28:18 -03:00
parent 559eb85bff
commit 0176f8bea4
2 changed files with 11 additions and 3 deletions
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src/include/access/multixact.h
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@@ -59,6 +59,7 @@ extern Size MultiXactShmemSize(void);
extern void MultiXactShmemInit(void);
extern void BootStrapMultiXact(void);
extern void StartupMultiXact(void);
extern void TrimMultiXact(void);
extern void ShutdownMultiXact(void);
extern void MultiXactGetCheckptMulti(bool is_shutdown,
MultiXactId *nextMulti,