[PATCH 5.19 1084/1157] block: add bdev_max_segments() helper

From: Greg Kroah-Hartman
Date: Mon Aug 15 2022 - 21:04:22 EST


From: Naohiro Aota <naohiro.aota@xxxxxxx>

[ Upstream commit 65ea1b66482f415d51cd46515b02477257330339 ]

Add bdev_max_segments() like other queue parameters.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
Reviewed-by: Jens Axboe <axboe@xxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Naohiro Aota <naohiro.aota@xxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
include/linux/blkdev.h | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 2f7b43444c5f..62e3ff52ab03 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1206,6 +1206,11 @@ bdev_max_zone_append_sectors(struct block_device *bdev)
return queue_max_zone_append_sectors(bdev_get_queue(bdev));
}

+static inline unsigned int bdev_max_segments(struct block_device *bdev)
+{
+ return queue_max_segments(bdev_get_queue(bdev));
+}
+
static inline unsigned queue_logical_block_size(const struct request_queue *q)
{
int retval = 512;
--
2.35.1