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Diffstat (limited to 'src/backend/access/index/genam.c')
| -rw-r--r-- | src/backend/access/index/genam.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/backend/access/index/genam.c b/src/backend/access/index/genam.c index c846bf30d50..ede9660c9eb 100644 --- a/src/backend/access/index/genam.c +++ b/src/backend/access/index/genam.c @@ -755,7 +755,9 @@ systable_endscan_ordered(SysScanDesc sysscan) * * Overwriting violates both MVCC and transactional safety, so the uses of * this function in Postgres are extremely limited. Nonetheless we find some - * places to use it. Standard flow: + * places to use it. See README.tuplock section "Locking to write + * inplace-updated tables" and later sections for expectations of readers and + * writers of a table that gets inplace updates. Standard flow: * * ... [any slow preparation not requiring oldtup] ... * systable_inplace_update_begin([...], &tup, &inplace_state); |