From: Eric Dumazet
Date: Wed, 22 Apr 2015 13:20:48 -0700
> On Wed, 2015-04-22 at 15:35 -0400, David Miller wrote:
>> From: Eric Dumazet
>> Date: Wed, 22 Apr 2015 07:33:36 -0700
>>
>> > Also, we must refrain using high order pages from the pfmemalloc
>> > reserve, so __page_frag_refill() must al
On Wed, 2015-04-22 at 15:35 -0400, David Miller wrote:
> From: Eric Dumazet
> Date: Wed, 22 Apr 2015 07:33:36 -0700
>
> > Also, we must refrain using high order pages from the pfmemalloc
> > reserve, so __page_frag_refill() must also use __GFP_NOMEMALLOC for
> > them. Under memory pressure, using
From: Eric Dumazet
Date: Wed, 22 Apr 2015 07:33:36 -0700
> Also, we must refrain using high order pages from the pfmemalloc
> reserve, so __page_frag_refill() must also use __GFP_NOMEMALLOC for
> them. Under memory pressure, using order-0 pages is probably the best
> strategy.
...
> @@ -348,7 +3
From: Eric Dumazet
build_skb() should look at the page pfmemalloc status.
If set, this means page allocator allocated this page in the
expectation it would help to free other pages. Networking
stack can do that only if skb->pfmemalloc is also set.
Also, we must refrain using high order pages fro
