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Fix bug in prefetch cleanup

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This commit is contained in:
Konstantin Knizhnik
2024-03-29 14:08:50 +02:00
parent 86762ba313
commit 1cd71d29ac
1 changed files with 9 additions and 4 deletions
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13
pgxn/neon/pagestore_smgr.c
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@@ -806,7 +806,8 @@ Retry:
{
if (*force_lsn > slot->effective_request_lsn)
{
prefetch_wait_for(ring_index);
if (!prefetch_wait_for(ring_index))
goto Retry;
prefetch_set_unused(ring_index);
entry = NULL;
}
@@ -821,7 +822,8 @@ Retry:
{
if (*force_lsn != slot->effective_request_lsn)
{
prefetch_wait_for(ring_index);
if (!prefetch_wait_for(ring_index))
goto Retry;
prefetch_set_unused(ring_index);
entry = NULL;
}
@@ -887,7 +889,8 @@ Retry:
{
case PRFS_REQUESTED:
Assert(MyPState->ring_receive == cleanup_index);
prefetch_wait_for(cleanup_index);
if (!prefetch_wait_for(cleanup_index))
goto Retry;
prefetch_set_unused(cleanup_index);
break;
case PRFS_RECEIVED:
@@ -2145,6 +2148,7 @@ neon_read_at_lsn(NRelFileInfo rinfo, ForkNumber forkNum, BlockNumber blkno,
/*
* Try to find prefetched page in the list of received pages.
*/
Retry:
entry = prfh_lookup(MyPState->prf_hash, (PrefetchRequest *) &buftag);
if (entry != NULL)
@@ -2166,7 +2170,8 @@ neon_read_at_lsn(NRelFileInfo rinfo, ForkNumber forkNum, BlockNumber blkno,
*/
if (slot->status == PRFS_REQUESTED)
{
prefetch_wait_for(slot->my_ring_index);
if (!prefetch_wait_for(slot->my_ring_index))
goto Retry;
}
/* drop caches */
prefetch_set_unused(slot->my_ring_index);