Sorry, but you are wrong.  It was always a limit.  Otherwise z/OS would simply 
take all that it wanted in the LFAREA, which sort of makes it silly to specify 
anything if it was going to take it anyway. :)

Pre-2.3, if you said 1GB was to be used, that was the MAX.  You can see that by 
issuing the command on older systems to check the allocations.  MAX AVAIL=LIMIT.

Otherwise we would see astronomical values for the amount available.

Brian

On Sun, 28 Mar 2021 17:25:20 -0500, Harris Morgenstern <[email protected]> 
wrote:

>In V2R3, the 1M LFAREA specification  is a limit and not a reservation as 
>it was in prior releases.    From the Init and Tuning Reference: 
>
>xM or xG or xT
>Specifies the maximum amount of online real storage that can be used to 
>satisfy fixed 1 MB page
>requests. Up to six decimal digits can be specified for x: xM specifies 
>the amount is in megabytes;
>...
>
>
>The 2G LFAREA specification has not changed and is still a reservation. 
>From the Init and Tuning Reference: 
>
>2G=(a)
>Specifies the number of 2 GB pages of online real storage to reserve in 
>the large frame area. Up to...
>
>
>
>Harris Morgenstern
>z/OS Storage Management and System REXX
>Dept. OBPA
>IBM Poughkeepsie
>8-295-4221 
>[email protected]
>
>
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