Horton

Make smgr access for a BufferManagerRelation safer in relcache inval

Álvaro Herrera <alvherre@kurilemu.de>

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Commit: b7cc6474e930d4429b15657d6910e1e32066de5e
Author: Álvaro Herrera <alvherre@kurilemu.de>
Date: 2025-10-21T07:51:55Z
Releases: 19 (unreleased) 
Make smgr access for a BufferManagerRelation safer in relcache inval

Currently there's no bug, because we have no code path where we
invalidate relcache entries where it'd cause a problem.  But it's more
robust to do it this way in case we introduce such a path later, as some
Postgres forks reportedly already have.

Author: Daniil Davydov <3danissimo@gmail.com>
Reviewed-by: Stepan Neretin <slpmcf@gmail.com>
Discussion: https://postgr.es/m/CAJDiXgj3FNzAhV+jjPqxMs3jz=OgPohsoXFj_fh-L+nS+13CKQ@mail.gmail.com

Files

PathChange+/−
src/backend/storage/buffer/bufmgr.c modified +27 −32
src/backend/storage/buffer/localbuf.c modified +6 −4
src/include/storage/bufmgr.h modified +11 −4

Discussion