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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2007-09-12 22:10:26 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2007-09-12 22:10:26 +0000 |
| commit | 6889303531187f7867a5dfad5f5b5ba103f7cdd6 (patch) | |
| tree | ea862682de0eb2dad6cba22fb7d0978d70fd54b2 /src/backend/access/gist/gistscan.c | |
| parent | eb0a7735ba1ede6a35b80d73f6c371a8b1220552 (diff) | |
| download | postgresql-6889303531187f7867a5dfad5f5b5ba103f7cdd6.tar.gz postgresql-6889303531187f7867a5dfad5f5b5ba103f7cdd6.zip | |
Redefine the lp_flags field of item pointers as having four states, rather
than two independent bits (one of which was never used in heap pages anyway,
or at least hadn't been in a very long time). This gives us flexibility to
add the HOT notions of redirected and dead item pointers without requiring
anything so klugy as magic values of lp_off and lp_len. The state values
are chosen so that for the states currently in use (pre-HOT) there is no
change in the physical representation.
Diffstat (limited to 'src/backend/access/gist/gistscan.c')
0 files changed, 0 insertions, 0 deletions