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SubjectRe: __alloc_pages() failures reported due to fragmentation
Arjan van de Ven wrote:

>>--- linux-2.6.18.noarch/net/core/sock.c.orig
>>+++ linux-2.6.18.noarch/net/core/sock.c
>>@@ -1154,7 +1154,7 @@ static struct sk_buff *sock_alloc_send_p
>> goto failure;
>> if (atomic_read(&sk->sk_wmem_alloc) < sk->sk_sndbuf) {
>>- skb = alloc_skb(header_len, sk->sk_allocation);
>>+ skb = alloc_skb(header_len, gfp_mask);
>> if (skb) {
>> int npages;
>> int i;
>this is not actually right though... sk_allocation is very possible to
>have a restricting mask compared to the one passed in (say "no highmem"
>or even GFP_DMA) and you now discard this... probably better would be to
>calculate a set of "transient" flags that you then or into the
>sk_allocation mask at this time...
> Arjan van de Ven
Hi Arjan. Right but this just includes __GFP_REPEAT in the mask so we can
defrag in __alloc_pages and only if GFP_WAIT was passed in origionally.


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