Renamed to RWF_UNCACHED, fixed a bug, and added support for writes. For the latter, they work like O_DIRECT writes in that they wait for completion, then drop the range from the cache. https://git.kernel.dk/cgit/linux-block/commit/?h=buffered-uncached&id=0a1d5f95b15679f902012dc058b5020cf1bc7a6c …
It'd not leave a range present in the page cache when not present before the write.
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Gotcha, so exactly like the read side works. That does make sense (and would make it consistent between reads and writes), would take a bit more work. I'll take a look.
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https://git.kernel.dk/cgit/linux-block/log/?h=buffered-uncached … That should have the right behavior on writes as well. Totally untested, I'll do that now.
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