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loop: pass queue_limits to blk_mq_alloc_disk 

Pass the max_hw_sector limit loop sets at initialization time directly to
blk_mq_alloc_disk instead of updating it right after the allocation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240213073425.1621680-15-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2024-02-13 08:34:24 +01:00 committed by Jens Axboe
parent 65bdd16f8c
commit 02aed4a1f2
1 changed files with 7 additions and 4 deletions
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11
drivers/block/loop.c
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@ -1971,6 +1971,12 @@ static const struct blk_mq_ops loop_mq_ops = {
static int loop_add(int i)
{
struct queue_limits lim = {
/*
* Random number picked from the historic block max_sectors cap.
*/
.max_hw_sectors = 2560u,
};
struct loop_device *lo;
struct gendisk *disk;
int err;
@ -2014,16 +2020,13 @@ static int loop_add(int i)
if (err)
goto out_free_idr;
disk = lo->lo_disk = blk_mq_alloc_disk(&lo->tag_set, NULL, lo);
disk = lo->lo_disk = blk_mq_alloc_disk(&lo->tag_set, &lim, lo);
if (IS_ERR(disk)) {
err = PTR_ERR(disk);
goto out_cleanup_tags;
}
lo->lo_queue = lo->lo_disk->queue;
/* random number picked from the history block max_sectors cap */
blk_queue_max_hw_sectors(lo->lo_queue, 2560u);
/*
* By default, we do buffer IO, so it doesn't make sense to enable
* merge because the I/O submitted to backing file is handled page by