NLM_NEVER
if (when != NLM_NEVER) {
if ((when += jiffies) == NLM_NEVER)
if (block->b_when == NLM_NEVER)
if (time_after(b->b_when,when) || b->b_when == NLM_NEVER)
nlmsvc_insert_block_locked(block, NLM_NEVER);
nlmsvc_insert_block(block, NLM_NEVER);
nlmsvc_insert_block(block, NLM_NEVER);