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Flash and small modificationsFlash and small modificationsPosted Apr 6, 2012 22:46 UTC (Fri) by jzbiciak (✭ supporter ✭, #5246)In reply to: Flash and small modifications by dlang Parent article: 2012 Linux Storage, Filesystem, and Memory Management Summit - Day 2
Where I think the overlaid CRCs might become more interesting is when the CRC is supposed to cover a fairly large block (say 64K) but you're rewriting a much smaller piece (say 4K) with a minor update. If you don't have the other pieces handy, you can compute your CRC update on just the piece you have, rather than having to go read them.
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Flash and small modifications Posted Apr 6, 2012 23:02 UTC (Fri) by dlang (✭ supporter ✭, #313) [Link]
true, but if you think of the fact that it's only the on-device controller that would have to re-read the data, I don't think it really matters, the speed that it can re-read the raw data is fast enough that I really don't expect it to be a bottleneck.
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