[PATCH 23/27] block: add a bdev_max_discard_sectors helper

[Chaitanya Kulkarni]

On 4/14/22 21:52, Christoph Hellwig wrote:
> Add a helper to query the number of sectors support per each discard bio
> based on the block device and use this helper to stop various places from
> poking into the request_queue to see if discard is supported and if so how
> much.  This mirrors what is done e.g. for write zeroes as well.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>
> Reviewed-by: Martin K. Petersen <martin.petersen at oracle.com>
> Acked-by: Christoph Böhmwalder <christoph.boehmwalder at linbit.com> [drbd]
> Acked-by: Coly Li <colyli at suse.de> [bcache]
> Acked-by: David Sterba <dsterba at suse.com> [btrfs]
> ---

Looks good.

Reviewed-by: Chaitanya Kulkarni <kch at nvidia.com>

-ck