diff options
Diffstat (limited to 'src/include/storage/relfilenode.h')
| -rw-r--r-- | src/include/storage/relfilenode.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/include/storage/relfilenode.h b/src/include/storage/relfilenode.h index b5e4e1134db..9a9df6d11e8 100644 --- a/src/include/storage/relfilenode.h +++ b/src/include/storage/relfilenode.h @@ -65,6 +65,10 @@ typedef enum ForkNumber * Note: in pg_class, relfilenode can be zero to denote that the relation * is a "mapped" relation, whose current true filenode number is available * from relmapper.c. Again, this case is NOT allowed in RelFileNodes. + * + * Note: various places use RelFileNode in hashtable keys. Therefore, + * there *must not* be any unused padding bytes in this struct. That + * should be safe as long as all the fields are of type Oid. */ typedef struct RelFileNode { |