Commit 4a718d7d authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

xen-blkfront: set max_discard/secure erase limits to UINT_MAX 



Currently xen-blkfront set the max discard limit to the capacity of
the device, which is suboptimal when the capacity changes.  Just set
it to UINT_MAX, which has the same effect and is simpler.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Acked-by: default avatarRoger Pau Monné <roger.pau@citrix.com>
Link: https://lore.kernel.org/r/20240221125845.3610668-2-hch@lst.de


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 82c6515d

drivers/block/xen-blkfront.c

+2 −4
Original line number Diff line number Diff line
@@ -944,20 +944,18 @@ static const struct blk_mq_ops blkfront_mq_ops = { 
static void blkif_set_queue_limits(struct blkfront_info *info)

{

	struct request_queue *rq = info->rq;

	struct gendisk *gd = info->gd;

	unsigned int segments = info->max_indirect_segments ? :

				BLKIF_MAX_SEGMENTS_PER_REQUEST;



	blk_queue_flag_set(QUEUE_FLAG_VIRT, rq);



	if (info->feature_discard) {

		blk_queue_max_discard_sectors(rq, get_capacity(gd));

		blk_queue_max_discard_sectors(rq, UINT_MAX);

		rq->limits.discard_granularity = info->discard_granularity ?:

						 info->physical_sector_size;

		rq->limits.discard_alignment = info->discard_alignment;

		if (info->feature_secdiscard)

			blk_queue_max_secure_erase_sectors(rq,

							   get_capacity(gd));

			blk_queue_max_secure_erase_sectors(rq, UINT_MAX);

	}



	/* Hard sector size and max sectors impersonate the equiv. hardware. */