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Commitfad0da2

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Search for SLRU page only in its own bank
One of the two slot scans in SlruSelectLRUPage was not walking only theslots in the specific bank where the buffer could be; change it to dothat.Oversight in53c2a97.Author: Sergey Sargsyan <sergey.sargsyan.2001@gmail.com>Discussion:https://postgr.es/m/18582-5f301dd30ba91a38@postgresql.org
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  • src/backend/access/transam

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‎src/backend/access/transam/slru.c‎

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Original file line numberDiff line numberDiff line change
@@ -1184,7 +1184,7 @@ SlruSelectLRUPage(SlruCtl ctl, int64 pageno)
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Assert(LWLockHeldByMe(SimpleLruGetBankLock(ctl,pageno)));
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/* See if page already has a buffer assigned */
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for (intslotno=0;slotno<shared->num_slots;slotno++)
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for (intslotno=bankstart;slotno<bankend;slotno++)
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{
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if (shared->page_status[slotno]!=SLRU_PAGE_EMPTY&&
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shared->page_number[slotno]==pageno)

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