netdev - Re: [net-next PATCH 1/6] net: Add skb_free_frag to replace use of put

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Message-ID: <1430785003.27254.20.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Mon, 04 May 2015 17:16:43 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Alexander Duyck <alexander.h.duyck@...hat.com>
Cc:	linux-mm@...ck.org, netdev@...r.kernel.org,
	akpm@...ux-foundation.org, davem@...emloft.net
Subject: Re: [net-next PATCH 1/6] net: Add skb_free_frag to replace use of
 put_page in freeing skb->head

On Mon, 2015-05-04 at 16:14 -0700, Alexander Duyck wrote:
> This change adds a function called skb_free_frag which is meant to
> compliment the function __alloc_page_frag.  The general idea is to enable a
> more lightweight version of page freeing since we don't actually need all
> the overhead of a put_page, and we don't quite fit the model of __free_pages.

Could you describe what are the things that put_page() handle that we
don't need for skb frags ?

It looks the change could benefit to other users (outside of networking)


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