pgsql: Add comment to explain why PGReserveSemaphores() is called early - Mailing list pgsql-committers

Add comment to explain why PGReserveSemaphores() is called early

Before commit e25626677f, PGReserveSemaphores() had to be called
before SpinlockSemaInit() because spinlocks were implemented using
semaphores on some platforms (--disable-spinlocks). Add a comment
explaining that.

Author: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>
Discussion: https://www.postgresql.org/message-id/CAExHW5seSZpPx-znjidVZNzdagGHOk06F+Ds88MpPUbxd1kTaA@mail.gmail.com
Backpatch-to: 18

Branch
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REL_18_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/75ec47c38bcf8777164cf91885eb907eb3fc369b

Modified Files
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src/backend/storage/ipc/ipci.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)