diff options
| author | Eric Dumazet <edumazet@google.com> | 2023-06-06 07:41:14 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-06-14 11:16:49 +0200 |
| commit | cf7436ec9d18a3a3cab187ffb8ee5db6d3e9d778 (patch) | |
| tree | c106ab2bbbb25d915d6f015b5ee327e23c7e8d49 /include/trace | |
| parent | 679fed7e3b30e8ff8695983d3553d89b2b110059 (diff) | |
| download | linux-stable-cf7436ec9d18a3a3cab187ffb8ee5db6d3e9d778.tar.gz linux-stable-cf7436ec9d18a3a3cab187ffb8ee5db6d3e9d778.tar.bz2 linux-stable-cf7436ec9d18a3a3cab187ffb8ee5db6d3e9d778.zip | |
rfs: annotate lockless accesses to sk->sk_rxhash
[ Upstream commit 1e5c647c3f6d4f8497dedcd226204e1880e0ffb3 ]
Add READ_ONCE()/WRITE_ONCE() on accesses to sk->sk_rxhash.
This also prevents a (smart ?) compiler to remove the condition in:
if (sk->sk_rxhash != newval)
sk->sk_rxhash = newval;
We need the condition to avoid dirtying a shared cache line.
Fixes: fec5e652e58f ("rfs: Receive Flow Steering")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/trace')
0 files changed, 0 insertions, 0 deletions