Re: [PATCH] iscsi-target: Convert timers to use timer_setup()

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On Wed, Oct 25, 2017 at 2:41 PM, Jason A. Donenfeld <Jason@xxxxxxxxx> wrote:
> On Wed, Oct 25, 2017 at 12:01 PM, Kees Cook <keescook@xxxxxxxxxxxx> wrote:
>>         sess->time2retain_timer.expires =
>>                 (get_jiffies_64() + sess->sess_ops->DefaultTime2Retain * HZ);
>>         add_timer(&sess->time2retain_timer);
>>         cmd->dataout_timer.expires = (get_jiffies_64() + na->dataout_timeout * HZ);
>>         add_timer(&cmd->dataout_timer);
>>         np->np_login_timer.expires = (get_jiffies_64() + TA_LOGIN_TIMEOUT * HZ);
>>         add_timer(&np->np_login_timer);
>> +       timeout.timer.expires = (get_jiffies_64() + TA_LOGIN_TIMEOUT * HZ);
>> +       add_timer(&timeout.timer);
>>         conn->nopin_response_timer.expires =
>>                 (get_jiffies_64() + na->nopin_response_timeout * HZ);
>>         add_timer(&conn->nopin_response_timer);
>>         conn->nopin_timer.expires = (get_jiffies_64() + na->nopin_timeout * HZ);
>>         add_timer(&conn->nopin_timer);
>>         conn->nopin_timer.expires = (get_jiffies_64() + na->nopin_timeout * HZ);
>>         add_timer(&conn->nopin_timer);
>
> I assume you're trying to keep these diffs as small as possible, but I
> imagine at some point the above can also be combined into a single
> mod_timer.

Yeah, I've resisted making those changes for this set of conversions.

> Also, all the goofiness with the flags stuff seems like an antique
> replacement for timer_pending:
>
>>        conn->nopin_response_timer_flags &= ~ISCSI_TF_STOP;
>>        conn->nopin_response_timer_flags |= ISCSI_TF_RUNNING;

Those appear to be separate flags not from struct timer_list.

However, maintainers: sorry to send this one -- it can't be merged
yet, this uses timer_setup_on_stack() which is only in -next right
now. If it looks okay, though, I can carry this in the timer tree.

-Kees

-- 
Kees Cook
Pixel Security



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