On Mon, Jan 05 2009, Bartlomiej Zolnierkiewicz wrote:
> From: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
> Subject: [PATCH] block: export SSD/non-rotational queue flag through sysfs
>
> For some devices (i.e. CFA ATA) we can't reliably detect whether
> the device is of rotational or non-rotational type so we need to
> leave the final decision about this setting to the user-space.
I agree with that, was actually planning on doing that myself.
> @@ -146,8 +167,8 @@ static ssize_t queue_nomerges_store(stru
> queue_flag_set(QUEUE_FLAG_NOMERGES, q);
> else
> queue_flag_clear(QUEUE_FLAG_NOMERGES, q);
> -
> spin_unlock_irq(q->queue_lock);
> +
> return ret;
> }
>
Hmm?
> @@ -210,6 +231,12 @@ static struct queue_sysfs_entry queue_hw
> .show = queue_hw_sector_size_show,
> };
>
> +static struct queue_sysfs_entry queue_nonrot_entry = {
> + .attr = {.name = "nonrot", .mode = S_IRUGO | S_IWUSR },
> + .show = queue_nonrot_show,
> + .store = queue_nonrot_store,
> +};
> +
Lets please use a better name for export reasons, non-rotational is a
lot better. Nobody will know what nonrot means :-)
--
Jens Axboe
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