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authorEric Dumazet <edumazet@google.com>2019-11-06 01:11:51 +0300
committerDavid S. Miller <davem@davemloft.net>2019-11-07 03:14:48 +0300
commit25c7a6d1f90e208ec27ca854b1381ed39842ec57 (patch)
treea645c406ef309589a1c6f851ca1ba761575a00b4 /net/ax25
parent3828a93f5cfdf5d8a4ff9dead741e9a2871ff57b (diff)
downloadlinux-25c7a6d1f90e208ec27ca854b1381ed39842ec57.tar.xz
net: avoid potential false sharing in neighbor related code
There are common instances of the following construct : if (n->confirmed != now) n->confirmed = now; A C compiler could legally remove the conditional. Use READ_ONCE()/WRITE_ONCE() to avoid this problem. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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