netdev - Re: [PATCH 01/10] net: Use cached copy of pfmemalloc to avoid accessing page

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Message-Id: <20150510.191851.414324528131774160.davem@davemloft.net>
Date:	Sun, 10 May 2015 19:18:51 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	alexander.h.duyck@...hat.com
Cc:	netdev@...r.kernel.org, linux-mm@...ck.org,
	akpm@...ux-foundation.org, eric.dumazet@...il.com
Subject: Re: [PATCH 01/10] net: Use cached copy of pfmemalloc to avoid
 accessing page

From: Alexander Duyck <alexander.h.duyck@...hat.com>
Date: Wed, 06 May 2015 21:11:40 -0700

> +	/* use OR instead of assignment to avoid clearing of bits in mask */
> +	if (pfmemalloc)
> +		skb->pfmemalloc = 1;
> +	skb->head_frag = 1;
 ...
> +	/* use OR instead of assignment to avoid clearing of bits in mask */
> +	if (nc->pfmemalloc)
> +		skb->pfmemalloc = 1;
> +	skb->head_frag = 1;

Maybe make these two cases more consistent by either accessing
nc->pfmemalloc or using a local variable in both cases.
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