frag_prev
if (frag->ofs & (PAGE_SIZE-1) && frag_prev(frag)
&& frag_prev(frag)->size < PAGE_SIZE && frag_prev(frag)->node) {
while((frag = frag_prev(frag)) && frag->ofs >= min) {
struct jffs2_node_frag *prev = frag_prev(newfrag);
struct sk_buff *skb = NULL, *head = NULL, *frag_prev = NULL;
frag_prev = skb;
if (frag_prev && !skb_shinfo(skb)->nr_frags) {
if (head == frag_prev)
frag_prev->next = NULL;
skb = frag_prev;