diff options
Diffstat (limited to 'include/linux/netdevice.h')
| -rw-r--r-- | include/linux/netdevice.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index eeacebd7debb..de025c0585ca 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1848,6 +1848,11 @@ struct net_device { unsigned char if_port; unsigned char dma; + /* Note : dev->mtu is often read without holding a lock. + * Writers usually hold RTNL. + * It is recommended to use READ_ONCE() to annotate the reads, + * and to use WRITE_ONCE() to annotate the writes. + */ unsigned int mtu; unsigned int min_mtu; unsigned int max_mtu; |