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Commit276db87

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vacuumlazy.c: prefer the term "cleanup lock".
The term "super-exclusive lock" is an acceptable synonym of "cleanuplock". Even still, switching from one term to the other in the samefile is confusing. Standardize on "cleanup lock" within vacuumlazy.c.Per a complaint from Andres Freund.
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‎src/backend/access/heap/vacuumlazy.c

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@@ -1274,8 +1274,8 @@ lazy_scan_heap(LVRelState *vacrel, VacuumParams *params, bool aggressive)
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* By here we definitely have enough dead_tuples space for whatever
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* LP_DEAD tids are on this page, we have the visibility map page set
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* up in case we need to set this page's all_visible/all_frozen bit,
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* and we have asuper-exclusive lock. Any tuples on this page are
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*now sureto be "counted" by this VACUUM.
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* and we have acleanup lock. Any tuples on this page are now sure
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* to be "counted" by this VACUUM.
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*
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* One last piece of preamble needs to take place before we can prune:
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* we need to consider new and empty pages.
@@ -1524,8 +1524,8 @@ lazy_scan_heap(LVRelState *vacrel, VacuumParams *params, bool aggressive)
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}
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/*
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* Final steps for block: dropsuper-exclusive lock, record free space
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*in theFSM
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* Final steps for block: dropcleanup lock, record free space in the
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* FSM
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*/
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if (prunestate.has_lpdead_items&&vacrel->do_index_vacuuming)
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{
@@ -2377,8 +2377,8 @@ lazy_vacuum_heap_rel(LVRelState *vacrel)
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*lazy_vacuum_heap_page() -- free page's LP_DEAD items listed in the
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* vacrel->dead_tuples array.
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*
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* Caller must have an exclusive buffer lock on the buffer (though a
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*super-exclusive lock is also acceptable).
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* Caller must have an exclusive buffer lock on the buffer (though a full
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*cleanup lock is also acceptable).
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*
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* tupindex is the index in vacrel->dead_tuples of the first dead tuple for
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* this page. We assume the rest follow sequentially. The return value is

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