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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Nikolay Aleksandrov , Ido Schimmel , Simon Horman , Aaron Conole , Eelco Chaudron , Ilya Maximets , Shigeru Yoshida , Stanislav Fomichev , Breno Leitao , Carolina Jubran , Kuniyuki Iwashima , Guillaume Nault , linux-kernel@vger.kernel.org, bridge@lists.linux.dev, dev@openvswitch.org Subject: [PATCH net-next v2 0/7] u64_stats: Introduce u64_stats_reads() Date: Sat, 24 Jan 2026 00:21:32 +0800 Message-ID: <20260123162159.2877941-1-mmyangfl@gmail.com> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On 64bit arches, struct u64_stats_sync is empty and provides no help against load/store tearing. memcpy() and struct copying should not be considered tear-free. Use u64_stats_reads() instead. v1: https://lore.kernel.org/r/20260120092137.2161162-1-mmyangfl@gmail.com - rename to u64_stats_reads() to clarify data flow direction - refine the implementation - add docs - fix struct copying too David Yang (7): u64_stats: Introduce u64_stats_reads() u64_stats: Doc incorrect usage with plain variables net: bridge: mcast: fix memcpy with u64_stats net: openvswitch: fix load tearing with u64_stats macsec: fix memcpy with u64_stats mpls: Fix load tearing with u64_stats vxlan: vnifilter: fix memcpy with u64_stats drivers/net/macsec.c | 6 ++-- drivers/net/vxlan/vxlan_vnifilter.c | 2 +- include/linux/u64_stats_sync.h | 56 ++++++++++++++++++++++++----- net/bridge/br_multicast.c | 2 +- net/mpls/af_mpls.c | 2 +- net/openvswitch/datapath.c | 3 +- 6 files changed, 55 insertions(+), 16 deletions(-) -- 2.51.0