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  1. Lustre
  2. LU-15821

Server driven blocking callbacks can wait behind general lru_size management

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    • 9223372036854775807

      The current code places bl_ast lock callbacks at the end of the global BL callback queue.  This is bad because it causes urgent requests from the server to wait behind non-urgent cleanup tasks to keep lru_size at the right level.

      This can lead to evictions if there is a large queue of items in the global queue so the callback is not serviced in a timely manner.

      Put bl_ast callbacks on the priority queue so they do not wait behind the background traffic.

            paf0186 Patrick Farrell
            paf0186 Patrick Farrell
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