SSV-22756: Revert to Kmem cache for ABD chunks #93
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SSV-22756: BSOD: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (7e) - AV_ZFSin!unknown_function (Access Violation)
Issue: The customer VM was misconfigured with less RAM than what is recommended as per their ILDC workload. Under low memory conditions, memory allocations failed while allocating ABD chunks. The windows lookasidelist cache used earlier does not have options to guarantee allocation success under low memory conditions. So reverting to the older kmem cache which can handle such conditions.
Fix: -
Reverting the PR (but keeping the lookasidelist code file): bcb3007
4ef2b22
Dev Testing: -
Tested with Driver verifier.
QA testing: -
QA Executed vdbench performance tests and results were comparable with that of psp17.