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Is there a userland means to prefetch, asynchronously, file data into the cache? I'm aware I could accomplish this by various means (e.g, mapping the file into memory and locking or touching pages for instance), however this would ofcourse block and throwing threads at such a problem is profoundly inelegant.
Ideally one would just submit a read I/O with the user destination buffer omitted.
One idea that just occured to me would be to map the file into my address-space and issue appropriately aligned reads with it as the destination.
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