On Mon, 13 Dec 1999 01:08:41 +0100, Jamie Lokier
<lkd@tantalophile.demon.co.uk> said:
> Stephen C. Tweedie wrote:
>> Something I talked about with Linus a while back was to separate memory
>> into 4MB or 16MB zones, and do allocation not from individual zones but
>> from zone lists. Then you just keep track of two lists of zones: one
>> which contains zones which are known to have been used for non-pagable
>> allocations, and another in which all allocations are pagable.
> You could do that with dynamic granularity: mark buddy nodes as
> containing non-pageable allocations when appropriate.
Yes, but without any explicit effort to keep those non-pageable
allocations localised to a particular zone, you'll rapidly end up with
no completely unpinned 4MB buddy nodes anywhere.
--Stephne
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