Remove more obsolete comments about semaphores.

Thomas Munro <tmunro@postgresql.org>

Commit: a692a2a183e184cc8cd7e6958f8110bbc25e1e22
Author: Thomas Munro <tmunro@postgresql.org>
Date: 2021-07-09T06:06:57Z
Releases: 10.18
Remove more obsolete comments about semaphores.

Commit 6753333f stopped using semaphores as the sleep/wake mechanism for
heavyweight locks, but some obsolete references to that scheme remained
in comments.  As with similar commit 25b93a29, back-patch all the way.

Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Discussion: https://postgr.es/m/CA%2BhUKGLafjB1uzXcy%3D%3D2L3cy7rjHkqOVn7qRYGBjk%3D%3DtMJE7Yg%40mail.gmail.com

Files

PathChange+/−
src/backend/storage/lmgr/lwlock.c modified +9 −18

Discussion