| Message ID | 20231013121029.353351-7-jiri@resnulli.us (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | bb11cf9b2c4a21f6d1533ffd28feb0ef1fd659bb |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | devlink: fix a deadlock when taking devlink instance lock while holding RTNL lock | expand |
On Fri, Oct 13, 2023 at 02:10:28PM +0200, Jiri Pirko wrote: > From: Jiri Pirko <jiri@nvidia.com> > > Add a note describing the locking order of taking RTNL lock with devlink > instance lock. > > Signed-off-by: Jiri Pirko <jiri@nvidia.com> Reviewed-by: Simon Horman <horms@kernel.org>
diff --git a/Documentation/networking/devlink/index.rst b/Documentation/networking/devlink/index.rst index 52e52a1b603d..2884ad243b54 100644 --- a/Documentation/networking/devlink/index.rst +++ b/Documentation/networking/devlink/index.rst @@ -18,6 +18,10 @@ netlink commands. Drivers are encouraged to use the devlink instance lock for their own needs. +Drivers need to be cautious when taking devlink instance lock and +taking RTNL lock at the same time. Devlink instance lock needs to be taken +first, only after that RTNL lock could be taken. + Nested instances ----------------