Merge branch 'netpoll-make-sure-napi_list-is-safe-for-RCU-traversal'

Jakub Kicinski says:

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netpoll: make sure napi_list is safe for RCU traversal

This series is a follow-up to the fix in commit 96e97bc07e90 ("net:
disable netpoll on fresh napis"). To avoid any latent race conditions
convert dev->napi_list to a proper RCU list. We need minor restructuring
because it looks like netif_napi_del() used to be idempotent, and
it may be quite hard to track down everyone who depends on that.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>