x86: pci-dma.c: use __GFP_NO_OOM instead of __GFP_NORETRY

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On Wed, 2008-05-28 at 04:47 +0200, Andi Kleen wrote:
> > So...  why not just remove the setting of __GFP_NORETRY?  Why is it
> > wrong to oom-kill things in this case?
>
> When the 16MB zone overflows (which can be common in some workloads)
> calling the OOM killer is pretty useless because it has barely any
> real user data [only exception would be the "only 16MB" case Alan
> mentioned]. Killing random processes in this case is bad.
>
> I think for 16MB __GFP_NORETRY is ok because there should be
> nothing freeable in there so looping is useless. Only exception would be the
> "only 16MB total" case again but I'm not sure 2.6 supports that at all
> on x86.
>
> On the other hand d_a_c() does more allocations than just 16MB, especially
> on 64bit and the other zones need different strategies.

Okay, so how about this then ?

Signed-off-by: Ingo Molnar <mingo@elte.hu>

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This commit is contained in:

Miquel van Smoorenburg 2008-05-28 10:31:25 +02:00 • committed by Ingo Molnar

parent 75b19b790b

commit db9f600b96

1 changed files with 3 additions and 4 deletions

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arch/x86/kernel/pci-dma.c

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