netdev - Re: [PATCH][net-next] ipv6: replace write lock with read lock in addrconf_permanent

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Message-ID: <CAJFZqHzYNKBSiwV1i7qVq0QEakZYog23TqMA2vzGtAKr4A_4+Q@mail.gmail.com>
Date:	Tue, 15 Mar 2016 08:36:52 +0800
From:	Li RongQing <roy.qing.li@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH][net-next] ipv6: replace write lock with read lock in addrconf_permanent_addr

On Tue, Mar 15, 2016 at 12:25 AM, David Miller <davem@...emloft.net> wrote:
>
> We need it for the modifications made by fixup_permanent_addr().


fixup_permanent_addr should be protected by ifp->lock,
not by idev->lock write lock, since ifp is modified,

-Roy