> -----Original Message----- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On > Behalf Of Peter Hunkeler > Sent: 14 December, 2017 15:47 > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: AW: Re: RSM Freemained Frames - When do they apply? > > > >What does this exactly mean: "freemained frames"? Is it just a counter > or do they refer to specific frames, that are kept at hand in the > address space for faster assignment of new frame requests? > > > >I am not surprised that those frames, if they are "available" at all, > are not accessible anymore and access is punished with the same 0C4 as > any other not getmained frame. > > > See OA46291. The APAR is for z/OS V2.1 and V1.13, it is in the base for > z/OS V2.2. > > > With this new function, RSM (SRM?) may decide *not* to free the frames > that are backing some virtual area upon a STORAGE RELEASE or FREEMAIN. > It is a significant change, IMHO, since a program might continue to > (erroneously) access storage that has been freed but *not* getting an > S0C4-10/11 because the frame is still assigned. Or, it may get an S0C4- > 10/11 at some later point if RSM decided to really free some such frame > at a later time. > >
This not much different from the old situation, where you getmain a page, freemain half of it, so the frame still remains valid and is fully accessible. Kees ******************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ******************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
