database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-30 21:42:05 +03:00
Code Activity

Search for SLRU page only in its own bank

Browse Source 
One of the two slot scans in SlruSelectLRUPage was not walking only the
slots in the specific bank where the buffer could be; change it to do
that.

Oversight in 53c2a97a92.

Author: Sergey Sargsyan <sergey.sargsyan.2001@gmail.com>
Discussion: https://postgr.es/m/18582-5f301dd30ba91a38@postgresql.org
This commit is contained in:
Alvaro Herrera
2024-08-18 20:49:57 -04:00
parent 4b6aa0cffc
commit fad0da271e
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/backend/access/transam/slru.c
View File

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