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Date:   Mon, 29 Apr 2019 13:05:11 +0200
From:   Jiri Pirko <>
To:     Moshe Shemesh <>
Cc:     "David S. Miller" <>,
        Jiri Pirko <>,
        Jakub Kicinski <>,
        Saeed Mahameed <>,,
Subject: Re: [PATCH net-next] devlink: Change devlink health locking mechanism

Mon, Apr 29, 2019 at 11:41:45AM CEST, wrote:
>The devlink health reporters create/destroy and user commands currently
>use the devlink->lock as a locking mechanism. Different reporters have
>different rules in the driver and are being created/destroyed during
>different stages of driver load/unload/running. So during execution of a
>reporter recover the flow can go through another reporter's destroy and
>create. Such flow leads to deadlock trying to lock a mutex already
>With the new locking mechanism the different reporters share mutex lock
>only to protect access to shared reporters list.
>Added refcount per reporter, to protect the reporters from destroy while
>being used.
>Signed-off-by: Moshe Shemesh <>

Signed-off-by: Jiri Pirko <>

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