Re: [PATCH] skb: Add skb_head_is_locked helper function

On Thu, 2012-05-03 at 04:09 -0700, Alexander Duyck wrote:

This patch adds support for a skb_head_is_locked helper function.  It is
meant to be used any time we are considering transferring the head from
skb->head to a paged frag.  If the head is locked it means we cannot remove
the head from the skb so it must be copied or we must take the skb as a
whole.

Signed-off-by: Alexander Duyck <redacted>
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Acked-by: Eric Dumazet <edumazet@google.com>