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20 lines (16 sloc) 0.36 kB
#include <linux/highmem.h>
static inline void *kmap_skb_frag(const skb_frag_t *frag)
{
#ifdef CONFIG_HIGHMEM
BUG_ON(in_irq());
local_bh_disable();
#endif
return kmap_atomic(frag->page, KM_SKB_DATA_SOFTIRQ);
}
static inline void kunmap_skb_frag(void *vaddr)
{
kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
#ifdef CONFIG_HIGHMEM
local_bh_enable();
#endif
}
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