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 ------ master Details ------- https://git.postgresql.org/pg/commitdiff/512d3e8919b649d36a6f246c657c8b8df7536e8a Modified Files -------------- src/backend/access/heap/pruneheap.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)
