Re: [PATCH] per-task-predictive-write-throttling-1

Andrea Arcangeli writes:
 > Hello,
 > 
 > I wrote a patch to try avoiding making dirty about half the ram of the
 > computer when a single task is writing to disk (like during untarring or

Why is that useful? Don't we want (in general) to cache as many dirty
pages as possible in the hope that some of them will be re-dirtied (thus
avoiding additional write) or truncated (avoiding write altogether)?

Nikita.
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