diff options
Diffstat (limited to 'src/include/access/gin_private.h')
| -rw-r--r-- | src/include/access/gin_private.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/include/access/gin_private.h b/src/include/access/gin_private.h index 290f0edaefa..ee5d71e4d71 100644 --- a/src/include/access/gin_private.h +++ b/src/include/access/gin_private.h @@ -24,6 +24,10 @@ * Note: GIN does not include a page ID word as do the other index types. * This is OK because the opaque data is only 8 bytes and so can be reliably * distinguished by size. Revisit this if the size ever increases. + * Further note: as of 9.2, SP-GiST also uses 8-byte special space. This is + * still OK, as long as GIN isn't using all of the high-order bits in its + * flags word, because that way the flags word cannot match the page ID used + * by SP-GiST. */ typedef struct GinPageOpaqueData { |