Hi, While working on radix tree patch[1], John Naylor found that dsa.c doesn't already use shared locks even in dsa_dump(). dsa_dump() seems a pure read-only function so I thought we could use a shared lock mode there. Is there any reason to use exclusive mode even in dsa_dump()?
Ultimately, since we're trying to add a new function dsa_get_total_size() that just returns dsa_area_control.total_segment_size and therefore would also be a read-only function, I'd like to find out the correct lock mode there. Regards, [1] https://www.postgresql.org/message-id/CANWCAZYYzoKp_4%2B1m5mn-TRD62BTwom8iLXLOWMsHkkwFi%3Drzg%40mail.gmail.com -- Masahiko Sawada Amazon Web Services: https://aws.amazon.com
