From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
---|---|
To: | pgsql-committers(at)postgresql(dot)org |
Subject: | pgsql: Fix VM buffer pin management in heap_lock_updated_tuple_rec(). |
Date: | 2018-03-02 22:41:00 |
Message-ID: | E1ertMK-0001qC-37@gemulon.postgresql.org |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-committers |
Fix VM buffer pin management in heap_lock_updated_tuple_rec().
Sloppy coding in this function could lead to leaking a VM buffer pin,
or to attempting to free the same pin twice. Repair. While at it,
reduce the code's tendency to free and reacquire the same page pin.
Back-patch to 9.6; before that, this routine did not concern itself
with VM pages.
Amit Kapila and Tom Lane
Discussion: https://postgr.es/m/CAA4eK1KJKwhc=isgTQHjM76CAdVswzNeAuZkh_cx-6QgGkSEgA@mail.gmail.com
Branch
------
REL_10_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/76ec45756644e5d46301ee292f8f951f9f835fae
Modified Files
--------------
src/backend/access/heap/heapam.c | 24 ++++++++++++++++--------
1 file changed, 16 insertions(+), 8 deletions(-)
From | Date | Subject | |
---|---|---|---|
Next Message | Peter Eisentraut | 2018-03-03 00:45:13 | Re: [COMMITTERS] pgsql: Add much-more-extensive TAP tests for pgbench. |
Previous Message | Tom Lane | 2018-03-02 19:48:32 | pgsql: Fix pgbench TAP test to work in VPATH builds. |