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4699d76d19
As described in spl_kmem_cache_destroy() the ->skc_ref count was added to address the case of a cache reap or grow racing with a destroy. They are not strictly needed in the alloc/free paths because consumers of the cache are responsible for not using it while it's being destroyed. Removing this code is desirable because there is some evidence that contention on this atomic negative impacts performance on large-scale NUMA systems. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Tim Chase <tim@chase2k.com> Issue #463 |
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