From d2f526ba27d29c442542f7c5df0a86ef0b576716 Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Tue, 6 May 2025 17:47:24 +0530 Subject: block: introduce max_write_streams queue limit Drivers with hardware that support write streams need a way to export how many are available so applications can generically query this. Reviewed-by: Hannes Reinecke Reviewed-by: Nitesh Shetty Signed-off-by: Keith Busch [hch: renamed hints to streams, removed stacking] Signed-off-by: Christoph Hellwig Signed-off-by: Kanchan Joshi Link: https://lore.kernel.org/r/20250506121732.8211-4-joshi.k@samsung.com Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux/blkdev.h') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 94323f303b37..13e1426ad38d 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -404,6 +404,8 @@ struct queue_limits { unsigned short max_integrity_segments; unsigned short max_discard_segments; + unsigned short max_write_streams; + unsigned int max_open_zones; unsigned int max_active_zones; @@ -1270,6 +1272,13 @@ static inline unsigned int bdev_max_segments(struct block_device *bdev) return queue_max_segments(bdev_get_queue(bdev)); } +static inline unsigned short bdev_max_write_streams(struct block_device *bdev) +{ + if (bdev_is_partition(bdev)) + return 0; + return bdev_limits(bdev)->max_write_streams; +} + static inline unsigned queue_logical_block_size(const struct request_queue *q) { return q->limits.logical_block_size; -- cgit v1.2.3