On Mon, Sep 10, 2012 at 04:35:02PM -0700, Tejun Heo wrote: > debug. Would it be difficult to convert dm drivers to collect size > requirements and use front-pad for all per-bio data? I can't give a quick answer because a single bio may require a variable number (depending on the bio content) of (sequential) mempool_allocs from the same mempool to complete its processing, so we do have to audit all this very carefully to see what can/can't be pulled out.
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