On 2019/08/01 6:01, Chaitanya Kulkarni wrote:
> This patch introduces a new request operation REQ_OP_ZONE_RESET_ALL.
> This is useful for the applications like mkfs where it needs to reset
> all the zones present on the underlying block device. As part for this
> patch we also introduce new QUEUE_FLAG_ZONE_RESETALL which indicates the
> queue zone reset all capability and corresponding helper macro.
>
> Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx>
> ---
> include/linux/blk_types.h | 2 ++
> include/linux/blkdev.h | 3 +++
> 2 files changed, 5 insertions(+)
>
> diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
> index feff3fe4467e..3991b580d6bd 100644
> --- a/include/linux/blk_types.h
> +++ b/include/linux/blk_types.h
> @@ -282,6 +282,8 @@ enum req_opf {
> REQ_OP_ZONE_RESET = 6,
> /* write the same sector many times */
> REQ_OP_WRITE_SAME = 7,
> + /* reset all the zone present on the device */
> + REQ_OP_ZONE_RESET_ALL = 8,
> /* write the zero filled sector many times */
> REQ_OP_WRITE_ZEROES = 9,
>
> diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
> index 1ef375dafb1c..474008bffee2 100644
> --- a/include/linux/blkdev.h
> +++ b/include/linux/blkdev.h
> @@ -611,6 +611,7 @@ struct request_queue {
> #define QUEUE_FLAG_SCSI_PASSTHROUGH 23 /* queue supports SCSI commands */
> #define QUEUE_FLAG_QUIESCED 24 /* queue has been quiesced */
> #define QUEUE_FLAG_PCI_P2PDMA 25 /* device supports PCI p2p requests */
> +#define QUEUE_FLAG_ZONE_RESETALL 26 /* supports Zone Reset All */
>
> #define QUEUE_FLAG_MQ_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
> (1 << QUEUE_FLAG_SAME_COMP))
> @@ -630,6 +631,8 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q);
> #define blk_queue_io_stat(q) test_bit(QUEUE_FLAG_IO_STAT, &(q)->queue_flags)
> #define blk_queue_add_random(q) test_bit(QUEUE_FLAG_ADD_RANDOM, &(q)->queue_flags)
> #define blk_queue_discard(q) test_bit(QUEUE_FLAG_DISCARD, &(q)->queue_flags)
> +#define blk_queue_zone_resetall(q) \
> + test_bit(QUEUE_FLAG_ZONE_RESETALL, &(q)->queue_flags)
> #define blk_queue_secure_erase(q) \
> (test_bit(QUEUE_FLAG_SECERASE, &(q)->queue_flags))
> #define blk_queue_dax(q) test_bit(QUEUE_FLAG_DAX, &(q)->queue_flags)
>
Reviewed-by: Damien Le Moal <damien.lemoal@xxxxxxx>
--
Damien Le Moal
Western Digital Research
