I agree with Rob and Binyamin in worrying about a design that imposes 
non-swappability on someone else's address space.
I'll point out that in general TRANSWAP involves "swap in" and "don't 
allow subsequent swap-out" and "wait for completion by ECB".
You can't do the wait for completion from an SRB. Once you're within an 
SRB in the target space (and thus the space is already swapped in) perhaps 
DONTSWAP is sufficient. 

The information provided so far does not show doing some sort of "OKSWAP" 
afterwards. It would be inappropriate to leave the space non-swappable.

In general, in the absence of something like TRANSWAP or DONTSWAP, you'd 
have to be disabled from the test for swappability through the data 
reference  or have a suitable local lock in order to prevent swap-out.

Peter Relson
z/OS Core Technology Design


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