[dm-devel] [PATCH 2/3] dm: remove the make_request_fn check in device_area_is_invalid
Mike Snitzer
snitzer at redhat.com
Tue Apr 28 18:38:13 UTC 2020
On Sat, Apr 25 2020 at 3:53am -0400,
Christoph Hellwig <hch at lst.de> wrote:
> Signed-off-by: Christoph Hellwig <hch at lst.de>
Think it'd be useful to add a commit message like you did for revert
commit f01b411f41f91fc3196eae4317cf8b4d872830a6 , e.g.:
We can't have queues without a make_request_fn any more (and the loop
device uses blk-mq these days anyway..).
But that aside:
Acked-by: Mike Snitzer <snitzer at redhat.com>
Thanks.
> ---
> drivers/md/dm-table.c | 17 -----------------
> 1 file changed, 17 deletions(-)
>
> diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
> index 0a2cc197f62b4..8277b959e00bd 100644
> --- a/drivers/md/dm-table.c
> +++ b/drivers/md/dm-table.c
> @@ -279,7 +279,6 @@ static struct dm_dev_internal *find_device(struct list_head *l, dev_t dev)
> static int device_area_is_invalid(struct dm_target *ti, struct dm_dev *dev,
> sector_t start, sector_t len, void *data)
> {
> - struct request_queue *q;
> struct queue_limits *limits = data;
> struct block_device *bdev = dev->bdev;
> sector_t dev_size =
> @@ -288,22 +287,6 @@ static int device_area_is_invalid(struct dm_target *ti, struct dm_dev *dev,
> limits->logical_block_size >> SECTOR_SHIFT;
> char b[BDEVNAME_SIZE];
>
> - /*
> - * Some devices exist without request functions,
> - * such as loop devices not yet bound to backing files.
> - * Forbid the use of such devices.
> - */
> - q = bdev_get_queue(bdev);
> - if (!q || !q->make_request_fn) {
> - DMWARN("%s: %s is not yet initialised: "
> - "start=%llu, len=%llu, dev_size=%llu",
> - dm_device_name(ti->table->md), bdevname(bdev, b),
> - (unsigned long long)start,
> - (unsigned long long)len,
> - (unsigned long long)dev_size);
> - return 1;
> - }
> -
> if (!dev_size)
> return 0;
>
> --
> 2.26.1
>
>
> --
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