[roll] Roll fuchsia [kernel][vm] Prioritize OOM eviction in EvictUntilTargetsMet Adds oom_trigger to EvictUntilTargetsMet to bypass the cap on amount of pages freed per iteration. This allows OOM evictions to run to completion quickly without interleaving with parallel asynchronous attempts. The cap was added mainly to ensure an OOM eviction attempt did not block behind a long asynchronous one. Local testing doesn't show much of a difference in the overall time spent during OOM reclamation, which typically spans several 100ms. The higher priority memory-pressure-thread propagates its priority to the eviction-thread when it's waiting on the eviction_lock_ anyway. But it's worth avoiding bouncing between the two threads unnecessarily. Original-Bug: 492218086 Run-All-Tests: true Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1546940 Original-Revision: 0de5bd66f16eebdaeb8d682438575f74a808e0b4 GitOrigin-RevId: 7aff967a7cb212d92d24bf472be0776a45ad6f68 Change-Id: I36d2f0dede23eda461a19884152d15ae43de1160
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