On Fri, Aug 09, 2013 at 08:24:38AM -0600, Jens Axboe wrote:
> On 08/09/2013 02:23 AM, Alexander Gordeev wrote:
> > + ap->qc_tags = blk_mq_init_tags(ATA_MAX_QUEUE, 1, NUMA_NO_NODE);
> > + if (!ap->qc_tags) {
> > + kfree(ap);
> > + return NULL;
> > + }
>
> This should be blk_mq_init_tags(ATA_MAX_QUEUE - 1, 1, ...) since the
> total depth is normal_tags + reserved_tags.
Aha.. If blk_mq_init_tags() should be like this then?
diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index dcbc2a4..b131a48 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -468,10 +468,9 @@ struct blk_mq_tags *blk_mq_init_tags(unsigned int nr_tags,
* Rest of the tags start at the queue list
*/
tags->nr_free = 0;
- while (nr_tags - tags->nr_reserved) {
+ while (nr_tags--) {
tags->freelist[tags->nr_free] = tags->nr_free +
tags->nr_reserved;
- nr_tags--;
tags->nr_free++;
}
> --
> Jens Axboe
--
Regards,
Alexander Gordeev
agordeev@xxxxxxxxxx
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