I figure that if there are dirty blocks that belong to files that you
want to keep, they must be flushed at some time, probably on the
next sync(). On "normal" systems that's likely to happen in less
than a minute.
I admit that what I had in mind was medium-large systems with
multiple disks where some of the disks have very little activity
or small systems where there is really zero disk activity for
a long time.
I'm curios, how much work can you accomplish on your laptop
without any disk access (but you still need to save files - keeping
them in buffers until it's time to actually write them).
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