Messages in this thread | | | Date | Mon, 24 Apr 2017 06:03:11 -0700 | From | Andi Kleen <> | Subject | Re: Question on the five-level page table support patches |
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> Can you explain what the issue is? What used to work on Linux and > doesn't any more? The man page is quite clear:
In old Linux hint was a search hint, so if there isn't a hole at the hinted area it will search starting from there for a hole instead of giving up immediately.
Now it just gives up, which means every user has to implement their own search.
Yes I ran into the same problem and it's annoying. It broke originally when top down mmap was added I believe
Before the augmented rbtree it was potentially very expensive, but now it should be cheap.
-Andi
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