Hi, The function GetWalRcvWriteRecPtr isn't being used anywhere, however pg_atomic_read_u64(&walrcv->writtenUpto); (reading writtenUpto without spinlock) is being used directly in pg_stat_get_wal_receiver walreceiver.c. We either make use of the function instead of pg_atomic_read_u64(&walrcv->writtenUpto); or remove it. Since there's only one function using walrcv->writtenUpto right now, I prefer to remove the function to save some LOC (13).
Attaching patch. Thoughts? Regards, Bharath Rupireddy.
v1-0001-Remove-an-unused-function-GetWalRcvWriteRecPtr.patch
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