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

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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: Christoph Hellwig <hch@lst.de>
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Link: https://lore.kernel.org/r/20240221125845.3610668-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2024-02-21 13:58:42 +01:00 committed by Jens Axboe
parent 82c6515d8a
commit 4a718d7dba
1 changed files with 2 additions and 4 deletions
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6
drivers/block/xen-blkfront.c
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@ -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. */