Messages in this thread |  | | Date | Mon, 25 Sep 2000 18:19:07 +0200 (CEST) | From | Ingo Molnar <> | Subject | Re: the new VMt |
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On Mon, 25 Sep 2000, Andi Kleen wrote:
> An important exception in 2.2/2.4 is NFS with bigger rsize (will be fixed > in 2.5, but 2.4 does it this way). For an 8K r/wsize you need reliable > (=GFP_ATOMIC) 16K allocations.
the discussion does not affect GFP_ATOMIC - GFP_ATOMIC allocators *must* be prepared to handle occasional oom situations gracefully.
> Another thing I would worry about are ports with multiple user page > sizes in 2.5. Another ugly case is the x86-64 port which has 4K pages > but may likely need a 16K kernel stack due to the 64bit stack bloat.
yep, but these cases are not affected, i think in the order != 0 case we should return NULL if a certain number of iterations did not yield any free page.
Ingo
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