Make on-access pruning pin visibility map before locking heap page b46e1e54d078 pinned the VM after acquiring a cleanup lock on the heap page when on-access pruning. This was not correct, as pinning the VM may require I/O. Pin the VM before acquiring the lock. This could mean occasional unneeded pinning when the buffer is under contention, but that should be rare.
Reported-by: Melanie Plageman <[email protected]> Reviewed-by: Chao Li <[email protected]> Discussion: https://postgr.es/m/CAAKRu_aR6e2mNVo-DNHDUfBE5i0cbE4%3Du%3D_Qi9%2Bv573qiGtBig%40mail.gmail.com Backpatch-through: 19 Branch ------ REL_19_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/b3609cd2db8d7fd13cc261b8b00d642cd31947cf Modified Files -------------- src/backend/access/heap/pruneheap.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)
