On Mon, Sep 26, 2016 at 6:14 AM, Damien Le Moal <damien.lemoal@xxxxxxxx> wrote:
> From: Hannes Reinecke <hare@xxxxxxx>
>
> The queue limits already have a 'chunk_sectors' setting, so
> we should be presenting it via sysfs.
>
> Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
> Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxxx>
> ---
> block/blk-sysfs.c | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
> index ff9cd9c..488c2e2 100644
> --- a/block/blk-sysfs.c
> +++ b/block/blk-sysfs.c
> @@ -130,6 +130,11 @@ static ssize_t queue_physical_block_size_show(struct request_queue *q, char *pag
> return queue_var_show(queue_physical_block_size(q), page);
> }
>
> +static ssize_t queue_chunk_sectors_show(struct request_queue *q, char *page)
> +{
> + return queue_var_show(q->limits.chunk_sectors, page);
> +}
> +
> static ssize_t queue_io_min_show(struct request_queue *q, char *page)
> {
> return queue_var_show(queue_io_min(q), page);
> @@ -455,6 +460,11 @@ static struct queue_sysfs_entry queue_physical_block_size_entry = {
> .show = queue_physical_block_size_show,
> };
>
> +static struct queue_sysfs_entry queue_chunk_sectors_entry = {
> + .attr = {.name = "chunk_sectors", .mode = S_IRUGO },
> + .show = queue_chunk_sectors_show,
> +};
> +
> static struct queue_sysfs_entry queue_io_min_entry = {
> .attr = {.name = "minimum_io_size", .mode = S_IRUGO },
> .show = queue_io_min_show,
> @@ -555,6 +565,7 @@ static struct attribute *default_attrs[] = {
> &queue_hw_sector_size_entry.attr,
> &queue_logical_block_size_entry.attr,
> &queue_physical_block_size_entry.attr,
> + &queue_chunk_sectors_entry.attr,
> &queue_io_min_entry.attr,
> &queue_io_opt_entry.attr,
> &queue_discard_granularity_entry.attr,
> --
> 2.7.4
Reviewed-by: Shaun Tancheff <shaun.tancheff@xxxxxxxxxxx>
Tested-by: Shaun Tancheff <shaun.tancheff@xxxxxxxxxxx>
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--
Shaun Tancheff
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