1SKB_HEAD_IS_LOCKED(9)          Linux Networking          SKB_HEAD_IS_LOCKED(9)
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NAME

6       skb_head_is_locked - Determine if the skb->head is locked down
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SYNOPSIS

9       bool skb_head_is_locked(const struct sk_buff * skb);
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ARGUMENTS

12       skb
13           skb to check
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DESCRIPTION

16       The head on skbs build around a head frag can be removed if they are
17       not cloned. This function returns true if the skb head is locked down
18       due to either being allocated via kmalloc, or by being a clone with
19       multiple references to the head.
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22Kernel Hackers Manual 3.10         June 2019             SKB_HEAD_IS_LOCKED(9)
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