diff mbox series

[v2,net-next,03/13] dev: annotate accesses to dev->link

Message ID 20240208141154.1131622-4-edumazet@google.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net: complete dev_base_lock removal | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next, async
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1050 this patch: 1050
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 1 maintainers not CCed: idosch@nvidia.com
netdev/build_clang success Errors and warnings before: 1066 this patch: 1066
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1067 this patch: 1067
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-02-09--00-00 (tests: 687)

Commit Message

Eric Dumazet Feb. 8, 2024, 2:11 p.m. UTC 
Following patch will read dev->link locklessly,
annotate the write from do_setlink().

Signed-off-by: Eric Dumazet <edumazet@google.com>
---
 net/core/rtnetlink.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 31f433950c8dc953bcb65cc0469f7df962314b87..8d95e0863534f80cecceb2dd4a7b2a16f7f4bca3 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -2974,7 +2974,7 @@  static int do_setlink(const struct sk_buff *skb,
 		write_lock(&dev_base_lock);
 		if (dev->link_mode ^ value)
 			status |= DO_SETLINK_NOTIFY;
-		dev->link_mode = value;
+		WRITE_ONCE(dev->link_mode, value);
 		write_unlock(&dev_base_lock);
 	}