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Buffer List Header z/OS DFSMSdfp Advanced Services SC23-6861-01 |
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The buffer list header indicates whether the buffer list describes buffers for DSCBs. The DSCB bit must be set to 1 and the VIR bit to zero for CVAF to process a request to read or write a DSCB. Provide buffer lists and buffers in your program's protect key. CVAF uses the protect key and subpool fields in the buffer list header only if you code ACCESS=RLSE. Each buffer list header contains a count of the number of entries in the buffer list that directly follows the header. The forward chain address chains buffer lists together. The format of the buffer list header is shown in Table 1.
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Copyright IBM Corporation 1990, 2014
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