Re: [PATCH 06/16] target: fix condition

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On Wed, 17 September 2014 13:34:11 -0700, Nicholas A. Bellinger wrote:
> 
> So yeah, in earlier code (v3.10) ENODEV was supposed to signal that
> iser-target was shutting down, and that the NP thread was supposed to
> bail out.  In the same v3.10 code, there was another check at the out:
> label to determine if the return value should be zero to signal a break
> from the loop in iscsi_target_login_thread(). 
> 
> However, the ISCSI_NP_THREAD_SHUTDOWN check at the start of
> __iscsi_target_login_thread() has the same effect as the original code
> at the out: label, so I think it's safe to go ahead and drop the check
> all-together.
> 
> Applying the following patch to target-pending/for-next.

Looks good to me.

> commit 1d30686da4a40029cb48eab28442896b58aeceef
> Author: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
> Date:   Wed Sep 17 13:17:55 2014 -0700
> 
>     iscsi-target: Drop duplicate __iscsi_target_login_thread check
>     
>     This patch drops the now duplicate + unnecessary check for -ENODEV from
>     iscsi_transport->iscsit_accept_np() for jumping to out:, or immediately
>     returning 1 in __iscsi_target_login_thread() code.
>     
>     Since commit 81a9c5e72b the jump to out: and returning 1 have the same
>     effect, and end up hitting the ISCSI_NP_THREAD_SHUTDOWN check regardless
>     at the top of __iscsi_target_login_thread() during next loop iteration.
>     
>     So that said, it's safe to go ahead and remove this duplicate check.
>     
>     Reported-by: Joern Engel <joern@xxxxxxxxx>
>     Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
> 
> diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_lo
> index b1ae5cb..02d5ccd 100644
> --- a/drivers/target/iscsi/iscsi_target_login.c
> +++ b/drivers/target/iscsi/iscsi_target_login.c
> @@ -1267,8 +1267,6 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
>                         iscsit_put_transport(conn->conn_transport);
>                         kfree(conn);
>                         conn = NULL;
> -                       if (ret == -ENODEV)
> -                               goto out;
>                         /* Get another socket */
>                         return 1;
>                 }
> 

Jörn

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