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SubjectRe: Free memory never fully used, swapping
Date
> On Thu, Nov 25, 2010 at 07:18:49PM +0900, KOSAKI Motohiro wrote:
>
> > This?
>
> > - alloc_gfp = (flags | __GFP_NOWARN | __GFP_NORETRY) & ~__GFP_NOFAIL;
> > + alloc_gfp = (flags | __GFP_NOWARN) & ~(__GFP_NOFAIL | __GFP_WAIT);
>
> kswapd still gets woken in the !__GFP_WAIT case, which is what I was
> seeing anyway, because the order-3 allocatons were starting from
> __alloc_skb().

Oops, my fault.
We also need __GFP_NOKSWAPD. (Proposed by Andrea)




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