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| author | Eric Dumazet <edumazet@google.com> | 2024-02-13 06:32:39 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-05-17 12:02:23 +0200 |
| commit | 1c2b0f0823f8e031569ce14da9b336fe77d7b3c3 (patch) | |
| tree | 2a9667591633785002c70a5e925c6cf732210034 /net/ipv6 | |
| parent | 8745a8d74ba17dafe72b6ab461fa6c007d879747 (diff) | |
| download | linux-rpi-1c2b0f0823f8e031569ce14da9b336fe77d7b3c3.tar.gz linux-rpi-1c2b0f0823f8e031569ce14da9b336fe77d7b3c3.tar.bz2 linux-rpi-1c2b0f0823f8e031569ce14da9b336fe77d7b3c3.zip | |
net-sysfs: convert dev->operstate reads to lockless ones
[ Upstream commit 004d138364fd10dd5ff8ceb54cfdc2d792a7b338 ]
operstate_show() can omit dev_base_lock acquisition only
to read dev->operstate.
Annotate accesses to dev->operstate.
Writers still acquire dev_base_lock for mutual exclusion.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: 4893b8b3ef8d ("hsr: Simplify code for announcing HSR nodes timer setup")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/addrconf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index d1806eee1687..01f4502916a1 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -6011,7 +6011,7 @@ static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev, (dev->ifindex != dev_get_iflink(dev) && nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))) || nla_put_u8(skb, IFLA_OPERSTATE, - netif_running(dev) ? dev->operstate : IF_OPER_DOWN)) + netif_running(dev) ? READ_ONCE(dev->operstate) : IF_OPER_DOWN)) goto nla_put_failure; protoinfo = nla_nest_start_noflag(skb, IFLA_PROTINFO); if (!protoinfo) |