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heapam: Pass number of required pages to RelationGetBufferForTuple()

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A future commit will use this information to determine how aggressively to
extend the relation by. In heap_multi_insert() we know accurately how many
pages we need once we need to extend the relation, providing an accurate lower
bound for how much to extend.

Reviewed-by: Melanie Plageman <melanieplageman@gmail.com>
Discussion: https://postgr.es/m/20221029025420.eplyow6k7tgu6he3@awork3.anarazel.de
This commit is contained in:
Andres Freund
2023-04-06 14:18:24 -07:00
parent 7d71d3dd08
commit 5279e9db8e
3 changed files with 63 additions and 6 deletions
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3
src/include/access/hio.h
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@@ -38,6 +38,7 @@ extern void RelationPutHeapTuple(Relation relation, Buffer buffer,
extern Buffer RelationGetBufferForTuple(Relation relation, Size len,
Buffer otherBuffer, int options,
BulkInsertStateData *bistate,
Buffer *vmbuffer, Buffer *vmbuffer_other);
Buffer *vmbuffer, Buffer *vmbuffer_other,
int num_pages);
#endif /* HIO_H */