lkml.org 
[lkml]   [2011]   [Dec]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH] block: fix blk_queue_end_tag()
From
On Wed, Dec 21, 2011 at 5:20 AM, Matthew Wilcox <matthew@wil.cx> wrote:
> On Tue, Dec 20, 2011 at 11:30:14PM -0800, Williams, Dan J wrote:
>> @@ -284,16 +284,7 @@ void blk_queue_end_tag(struct request_queue *q,
>> struct request *rq)
>>         struct blk_queue_tag *bqt = q->queue_tags;
>>         int tag = rq->tag;
>>
>> -       BUG_ON(tag == -1);
>> -
>> -       if (unlikely(tag >= bqt->max_depth)) {
>> -               /*
>> -                * This can happen after tag depth has been reduced.
>> -                * But tag shouldn't be larger than real_max_depth.
>> -                */
>> -               WARN_ON(tag >= bqt->real_max_depth);
>> -               return;
>> -       }
>> +       BUG_ON(tag == -1 || tag > bqt->real_max_depth);
>
> or ...
>
> -       int tag = rq->tag;
> +       unsigned tag = rq->tag;
> +       BUG_ON(tag >= bqt->real_max_depth);
>
> since tags in the range INT_MIN to -2 are also a bug, right?

Yes, even better... patch coming up.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2011-12-21 18:39    [W:0.067 / U:0.876 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site