Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM.

FSDBK

Prolog  

Control Block Contents  
   FSDBK DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  


FSDBK Prolog

 NAME       : HCPFSDBK
 DESCRIPTION: Free Storage Data Block
 DSECT      : FSDBK
 FUNCTION   : Maps the fixed free storage data area, includes
              the VMDBK formal spin lock.
 CREATED BY : not 'created'. Maps the entry point
              HCPRSMFL defined in the RSM data module.
 DELETED BY : Never deleted

 

FSDBK Control Block Content


FSDBK DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      FSDBK          Free Storage Data Block
             Free Storage Formal Spin Lock Data Area
      FSDVMLK covers  - Sysperm Free Storage List (HCPRSMSV/SB)
                      - VMDBK free storage
                      - Guestperm free storage List (HCPRSMFR/FB)
                      - VMDBK count of DWs in use (VMDVMDWU)
                      - Counts related to sysperm/guestperm
                        free storage (e.g. RSAFVMUD/RSAFVMUB,
                        RSAVMXUD/RSAVMXUB, RSASYSUD/RSASYSUB,
                        etc.)
0000    0 Dbl-Word     8 FSDVMLK (6)    Free Storage Formal Spin Lock

 

FSDBK Storage Layout

          
*** FSDBK - Free Storage Data Block
*
*     +-------------------------------------------------------+
*   0 |                                                       |
*     =                       FSDVMLK                         =
*     |                                                       |
*     +-------------------------------------------------------+
*  30
*
*** FSDBK - Free Storage Data Block

 

FSDBK Cross Reference

Symbol         Dspl Value
-------------- ---- -----
FSDVMLK        0000

This information is based on z/VM V5R3.0. Last updated on 25 Jun 2007 at 16:36:49 EDT.
Copyright IBM Corporation, 1990, 2007