Thread: pgsql: Refine the definition of page-level freezing.

Refine the definition of page-level freezing.

Improve comments added by commit 1de58df4 which describe the
lazy_scan_prune "freeze the page" path.  These newly revised comments
are based on suggestions from Jeff Davis.

In passing, remove nearby visibility_cutoff_xid comments left over from
commit 6daeeb1f.

Author: Peter Geoghegan <pg@bowt.ie>
Reviewed-By: Jeff Davis <pgsql@j-davis.com>
Discussion: https://postgr.es/m/ebc857107fe3edd422ef8a65191ca4a8da568b9b.camel@j-davis.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/b37a0832396414e8469d4ee4daea33396bde39b0

Modified Files
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src/backend/access/heap/vacuumlazy.c | 20 +++++++-------------
src/include/access/heapam.h          | 23 ++++++++---------------
2 files changed, 15 insertions(+), 28 deletions(-)