On Tue, Apr 6, 2021 at 4:43 AM Max Gurtovoy <mgurtovoy@xxxxxxxxxx> wrote:
>
> This entry will expose the bio vector alignment mask for a specific
> block device.
>
> Signed-off-by: Max Gurtovoy <mgurtovoy@xxxxxxxxxx>
> ---
> block/blk-sysfs.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
> index 0f4f0c8a7825..86a545e6d82d 100644
> --- a/block/blk-sysfs.c
> +++ b/block/blk-sysfs.c
> @@ -264,6 +264,11 @@ static ssize_t queue_max_hw_sectors_show(struct request_queue *q, char *page)
> return queue_var_show(max_hw_sectors_kb, (page));
> }
>
> +static ssize_t queue_virt_boundary_mask_show(struct request_queue *q, char *page)
> +{
> + return queue_var_show(q->limits.virt_boundary_mask, (page));
> +}
> +
> #define QUEUE_SYSFS_BIT_FNS(name, flag, neg) \
> static ssize_t \
> queue_##name##_show(struct request_queue *q, char *page) \
> @@ -610,6 +615,7 @@ QUEUE_RO_ENTRY(queue_fua, "fua");
> QUEUE_RO_ENTRY(queue_dax, "dax");
> QUEUE_RW_ENTRY(queue_io_timeout, "io_timeout");
> QUEUE_RW_ENTRY(queue_wb_lat, "wbt_lat_usec");
> +QUEUE_RO_ENTRY(queue_virt_boundary_mask, "virt_boundary_mask");
>
> #ifdef CONFIG_BLK_DEV_THROTTLING_LOW
> QUEUE_RW_ENTRY(blk_throtl_sample_time, "throttle_sample_time");
> @@ -670,6 +676,7 @@ static struct attribute *queue_attrs[] = {
> #ifdef CONFIG_BLK_DEV_THROTTLING_LOW
> &blk_throtl_sample_time_entry.attr,
> #endif
> + &queue_virt_boundary_mask_entry.attr,
> NULL,
> };
Reviewed-by: Ming Lei <ming.lei@xxxxxxxxxx>
--
Ming Lei
