/*
* brin_vacuum_scan
* Do a complete scan of the index during VACUUM.
*
* This routine scans the complete index looking for uncatalogued index pages,
* i.e. those that might have been lost due to a crash after index extension
* and such.
*/
static void
brin_vacuum_scan(Relation idxrel, BufferAccessStrategy strategy)
{
bool vacuum_fsm = false;
BlockNumber blkno;
/*
* Scan the index in physical order, and clean up any possible mess in
* each page.
*/
for (blkno = 0; blkno < RelationGetNumberOfBlocks(idxrel); blkno++)
{
Buffer buf;
CHECK_FOR_INTERRUPTS();
buf = ReadBufferExtended(idxrel, MAIN_FORKNUM, blkno,
RBM_NORMAL, strategy);
vacuum_fsm |= brin_page_cleanup(idxrel, buf);
ReleaseBuffer(buf);
}
/*
* If we made any change to the FSM, make sure the new info is visible all
* the way to the top.
*/
if (vacuum_fsm)
FreeSpaceMapVacuum(idxrel);
}
/*
* brin_vacuum_scan
* Do a complete scan of the index during VACUUM.
*
* This routine scans the complete index looking for uncatalogued index pages,
* i.e. those that might have been lost due to a crash after index extension
* and such.
*/
static void
brin_vacuum_scan(Relation idxrel, BufferAccessStrategy strategy)
{
BlockNumber nblocks;
BlockNumber blkno;
/*
* Scan the index in physical order, and clean up any possible mess in
* each page.
*/
nblocks = RelationGetNumberOfBlocks(idxrel);
for (blkno = 0; blkno < nblocks; blkno++)
{
Buffer buf;
CHECK_FOR_INTERRUPTS();
buf = ReadBufferExtended(idxrel, MAIN_FORKNUM, blkno,
RBM_NORMAL, strategy);
brin_page_cleanup(idxrel, buf);
ReleaseBuffer(buf);
}
/*
* Update all upper pages in the index's FSM, as well. This ensures not
* only that we propagate leaf-page FSM updates made by brin_page_cleanup,
* but also that any pre-existing damage or out-of-dateness is repaired.
*/
FreeSpaceMapVacuum(idxrel);
}
