On Thu, 22 Feb 2007, Pekka J Enberg wrote:
> As suggested by William, free the actual pages in a batch so that we
> don't keep pounding on l3->list_lock.
This means holding the l3->list_lock for a prolonged time period. The
existing code was done this way in order to make sure that the interrupt
holdoffs are minimal.
There is no pounding. The cacheline with the list_lock is typically held
until the draining is complete. While we drain the freelist we need to be
able to respond to interrupts.
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