diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/storage/page/README | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/backend/storage/page/README b/src/backend/storage/page/README index d8e3f670791..5127d98da37 100644 --- a/src/backend/storage/page/README +++ b/src/backend/storage/page/README @@ -44,7 +44,7 @@ record a full page image in WAL. Hint bits updates should be protected using MarkBufferDirtyHint(), which is responsible for writing the full-page image when necessary. -Note that when we write a page checksum we include the hopefully zero bytes +Note that when we write a page checksum we include the hopefully zeroed bytes that form the hole in the centre of a standard page. Thus, when we read the block back from storage we implicitly check that the hole is still all zeroes. We do this to ensure that we spot errors that could have destroyed data even |