Messages in this thread | | | Subject | Re: 2.1.76, nfs client, and memory fragmentation | Date | Sun, 28 Dec 1997 15:49:32 -0600 (CST) | From | kwrohrer@enteract ... |
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And lo, Alan Cox saith unto me: > > can write it bottom-up, except I haven't found yet how to determine the > > address of the memory management structures for a page given its physical > > address (i.e. find the buddy of a free page so I can try to free it...). > > Not only that - but there may be several of them, and they may be in use. Well, yes, there's 1<<order pages in the free group whose buddy I'd be trying to free, and thus 1<<order pages of buddy... Making an order-d hunk of free pages may well be an O(order-d) operation, but shouldn't be worse than that, I'd hope...
Keith
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