Commit 9d4ed6d4 authored by Andreas Hindborg's avatar Andreas Hindborg Committed by Jens Axboe
Browse files

ublk: add helper to check if device supports user copy 



This will be used by ublk zoned storage support.

Signed-off-by: default avatarAndreas Hindborg <a.hindborg@samsung.com>
Reviewed-by: default avatarMing Lei <ming.lei@redhat.com>
Reviewed-by: default avatarDamien Le Moal <dlemoal@kernel.org>
Reviewed-by: default avatarJohannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20230804114610.179530-2-nmi@metaspace.dk


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 68392b00

drivers/block/ublk_drv.c

+6 −1
Original line number Diff line number Diff line
@@ -185,6 +185,11 @@ struct ublk_params_header { 
	__u32	types;

};



static inline bool ublk_dev_is_user_copy(const struct ublk_device *ub)

{

	return ub->dev_info.flags & UBLK_F_USER_COPY;

}



static inline void __ublk_complete_rq(struct request *req);

static void ublk_complete_rq(struct kref *ref);
@@ -2037,7 +2042,7 @@ static int ublk_ctrl_add_dev(struct io_uring_cmd *cmd) 
		UBLK_F_URING_CMD_COMP_IN_TASK;



	/* GET_DATA isn't needed any more with USER_COPY */

	if (ub->dev_info.flags & UBLK_F_USER_COPY)

	if (ublk_dev_is_user_copy(ub))

		ub->dev_info.flags &= ~UBLK_F_NEED_GET_DATA;



	/* We are not ready to support zero copy */