Horton

Re: Back-patch use of unnamed POSIX semaphores for Linux?

Tatsuo Ishii <ishii@sraoss.co.jp>

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From: Tatsuo Ishii <ishii@sraoss.co.jp>
To: michael.paquier@gmail.com
Cc: robertmhaas@gmail.com, tgl@sss.pgh.pa.us, pgsql-hackers@postgresql.org
Date: 2016-12-07T05:13:41Z
Lists: pgsql-hackers 
> Potential risks involving minor upgrades are far higher than the risks
> involved by systemd, so -1 for a backpatch seen from here.

As long as we would have a compile time switch to enable/disable the
back-patched feature, it seems it would be acceptable. In the worst
case, the back-patching could bring disasters, but in that case
packagers could turn off the switch and ship updated version of
packages.

Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese:http://www.sraoss.co.jp

Commits

  1. Make the different Unix-y semaphore implementations ABI-compatible.

  2. Use unnamed POSIX semaphores, if available, on Linux and FreeBSD.