From 7b47ef52d0a2025fd1408a8a0990933b8e1e510f Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 15 Apr 2022 06:52:56 +0200 Subject: block: add a bdev_discard_granularity helper MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Abstract away implementation details from file systems by providing a block_device based helper to retrieve the discard granularity. Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Acked-by: Christoph Böhmwalder [drbd] Acked-by: Ryusuke Konishi Acked-by: David Sterba [btrfs] Link: https://lore.kernel.org/r/20220415045258.199825-26-hch@lst.de Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 767ab22e1052..f1cf557ea20e 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1257,6 +1257,11 @@ static inline unsigned int bdev_max_discard_sectors(struct block_device *bdev) return bdev_get_queue(bdev)->limits.max_discard_sectors; } +static inline unsigned int bdev_discard_granularity(struct block_device *bdev) +{ + return bdev_get_queue(bdev)->limits.discard_granularity; +} + static inline unsigned int bdev_write_zeroes_sectors(struct block_device *bdev) { struct request_queue *q = bdev_get_queue(bdev); -- cgit v1.2.3