Fwd: dsm_registry: Add detach and destroy features

---------- Forwarded message ---------
보낸사람: Sungwoo Chang <swchangdev@gmail.com>
Date: 2025년 6월 13일 (금) 오전 8:03
Subject: Re: dsm_registry: Add detach and destroy features
To: Nathan Bossart <nathandbossart@gmail.com>


> One of the reasons I avoided adding detach/destroy functionality originally
> is because this seems difficult to do correctly.  How would an extension
> ensure that it doesn't end up with one set of backends attached to a new
> segment and another attached to an old one that is pending deletion?


Sorry for the late response.

I used this patch for my extension in a way that you should always
detach after you are done using the shmem segment. So the situation
you described would happen in a brief moment, but once the extension
finishes its task, the shmem segment will be destroyed naturally as
all processes detach from it.

Would this not be applicable in other extensions?