diff --git a/src/backend/access/hash/README b/src/backend/access/hash/README
new file mode 100644
index bb90722..21b4a82
*** a/src/backend/access/hash/README
--- b/src/backend/access/hash/README
*************** reality, InvalidBlockNumber.
*** 189,196 ****
  After computing the ostensibly-correct bucket number based on our cached
  copy of the metapage, we lock the corresponding primary bucket page and
  check whether the bucket count stored in hasho_prevblkno is greater than
! our the number of buckets stored in our cached copy of the metapage.  If
! so, the bucket has certainly been split, because the must originally
  have been less than the number of buckets that existed at that time and
  can't have increased except due to a split.  If not, the bucket can't have
  been split, because a split would have created a new bucket with a higher
--- 189,196 ----
  After computing the ostensibly-correct bucket number based on our cached
  copy of the metapage, we lock the corresponding primary bucket page and
  check whether the bucket count stored in hasho_prevblkno is greater than
! the number of buckets stored in our cached copy of the metapage.  If
! so, the bucket has certainly been split, because the count must originally
  have been less than the number of buckets that existed at that time and
  can't have increased except due to a split.  If not, the bucket can't have
  been split, because a split would have created a new bucket with a higher