diff options
| author | Eric Dumazet <edumazet@google.com> | 2024-02-14 08:48:28 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-17 16:20:41 +0100 |
| commit | 2444a80c1cc2c4240f60f2162abef3797c1803de (patch) | |
| tree | 2a977ffce3acb403fba8704d50edacb7681dcf3e /include/linux/kobject.h | |
| parent | 5df9197edd731a44682444631d68c2384f381bf1 (diff) | |
kobject: make uevent_seqnum atomic
We will soon no longer acquire uevent_sock_mutex
for most kobject_uevent_net_broadcast() calls,
and also while calling uevent_net_broadcast().
Make uevent_seqnum an atomic64_t to get its own protection.
This fixes a race while reading /sys/kernel/uevent_seqnum.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Christian Brauner <brauner@kernel.org>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Link: https://lore.kernel.org/r/20240214084829.684541-2-edumazet@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/kobject.h')
| -rw-r--r-- | include/linux/kobject.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/kobject.h b/include/linux/kobject.h index c30affcc43b4..c8219505a79f 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -38,7 +38,7 @@ extern char uevent_helper[]; #endif /* counter to tag the uevent, read only except for the kobject core */ -extern u64 uevent_seqnum; +extern atomic64_t uevent_seqnum; /* * The actions here must match the index to the string array |