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| author | Thomas Munro <tmunro@postgresql.org> | 2019-04-02 09:08:15 +1300 |
|---|---|---|
| committer | Thomas Munro <tmunro@postgresql.org> | 2019-04-02 09:29:49 +1300 |
| commit | 4fd05bb55b40a3c9dde2b19942f275fc31b5225a (patch) | |
| tree | e8700cb27e39c63b4cb1f35da1434cfca722bb3d /src/backend/access/gist/gistxlog.c | |
| parent | 12d46ac392d00fa0d103f445aa4997f97029e007 (diff) | |
| download | postgresql-4fd05bb55b40a3c9dde2b19942f275fc31b5225a.tar.gz | |
Fix deadlock in heap_compute_xid_horizon_for_tuples().
We can't call code that uses syscache while we hold buffer locks
on a catalog relation. If passed such a relation, just fall back
to the general effective_io_concurrency GUC rather than trying to
look up the containing tablespace's IO concurrency setting.
We might find a better way to control prefetching in follow-up
work, but for now this is enough to avoid the deadlock introduced
by commit 558a9165e0.
Reviewed-by: Andres Freund
Diagnosed-by: Peter Geoghegan
Discussion: https://postgr.es/m/CA%2BhUKGLCwPF0S4Mk7S8qw%2BDK0Bq65LueN9rofAA3HHSYikW-Zw%40mail.gmail.com
Discussion: https://postgr.es/m/962831d8-c18d-180d-75fb-8b842e3a2742%40chrullrich.net
Diffstat (limited to 'src/backend/access/gist/gistxlog.c')
0 files changed, 0 insertions, 0 deletions