SKB_HEAD_IS_LOCKED(9)                    Linux Networking                   SKB_HEAD_IS_LOCKED(9)



NAME
       skb_head_is_locked - Determine if the skb->head is locked down

SYNOPSIS
       bool skb_head_is_locked(const struct sk_buff * skb);

ARGUMENTS
       skb
           skb to check

DESCRIPTION
       The head on skbs build around a head frag can be removed if they are not cloned. This
       function returns true if the skb head is locked down due to either being allocated via
       kmalloc, or by being a clone with multiple references to the head.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                     SKB_HEAD_IS_LOCKED(9)