Re: [PATCH 2/2] cifs: use correct lock type in cifs_reconnect()

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looks good to me.
Reviewed-by me

On Thu, Apr 21, 2022 at 10:06 AM Paulo Alcantara <pc@xxxxxx> wrote:
>
> TCP_Server_Info::origin_fullpath and TCP_Server_Info::leaf_fullpath
> are protected by refpath_lock mutex and not cifs_tcp_ses_lock
> spinlock.
>
> Signed-off-by: Paulo Alcantara (SUSE) <pc@xxxxxx>
> ---
>  fs/cifs/connect.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
> index 2c24d433061a..42e14f408856 100644
> --- a/fs/cifs/connect.c
> +++ b/fs/cifs/connect.c
> @@ -534,12 +534,19 @@ int cifs_reconnect(struct TCP_Server_Info *server, bool mark_smb_session)
>  {
>         /* If tcp session is not an dfs connection, then reconnect to last target server */
>         spin_lock(&cifs_tcp_ses_lock);
> -       if (!server->is_dfs_conn || !server->origin_fullpath || !server->leaf_fullpath) {
> +       if (!server->is_dfs_conn) {
>                 spin_unlock(&cifs_tcp_ses_lock);
>                 return __cifs_reconnect(server, mark_smb_session);
>         }
>         spin_unlock(&cifs_tcp_ses_lock);
>
> +       mutex_lock(&server->refpath_lock);
> +       if (!server->origin_fullpath || !server->leaf_fullpath) {
> +               mutex_unlock(&server->refpath_lock);
> +               return __cifs_reconnect(server, mark_smb_session);
> +       }
> +       mutex_unlock(&server->refpath_lock);
> +
>         return reconnect_dfs_server(server);
>  }
>  #else
> --
> 2.35.3
>




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