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(parent: 53aafdb) | patch

pg_checksums: Fix progress reporting.

pg_checksums: Fix progress reporting.

pg_checksums uses two counters, total size and current size,
to calculate the progress. Previously the progress that
pg_checksums reported could not reach 100% at the end.
The cause of this issue was that the sizes of only pages excluding
new ones in each file were counted as the current size
while the size of each file is counted as the total size.
That is, the total size of all new pages could be reported
as the difference between the total size and current size.

This commit fixes this issue by making pg_checksums count
the sizes of all pages including new ones in each file as
the current size.

Back-patch to v12 where progress reporting was added to pg_checksums.

Reported-by: Shinya Kato
Author: Shinya Kato
Reviewed-by: Fujii Masao
Discussion: https://postgr.es/m/TYAPR01MB289656B1ACA0A5E7CAD07BE3C47A9@TYAPR01MB2896.jpnprd01.prod.outlook.com

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