Nathan Bossart d96c854dfc Fix documentation for shmem_startup_hook.
This section claims that each backend executes the
shmem_startup_hook shortly after attaching to shared memory, which
is true for EXEC_BACKEND builds, but not for others.  This commit
adds this important detail.

Oversight in commit 964152c476.

Reported-by: Sami Imseih <samimseih@gmail.com>
Reviewed-by: Sami Imseih <samimseih@gmail.com>
Discussion: https://postgr.es/m/CAA5RZ0vEGT1eigGbVt604LkXP6mUPMwPMxQoRCbFny44w%2B9EUQ%40mail.gmail.com
Backpatch-through: 17
2025-09-09 14:35:30 -05:00
..
2023-11-06 15:18:04 +01:00