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nvme: factor out nvme_ns_open and nvme_ns_release helpers 

These will be reused for the per-namespace character devices.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Javier González <javier.gonz@samsung.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
This commit is contained in:
Christoph Hellwig 2021-04-07 14:36:47 +02:00
parent 1496bd4936
commit f5b9a51db2
1 changed files with 12 additions and 4 deletions
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16
drivers/nvme/host/core.c
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@ -1483,9 +1483,8 @@ void nvme_put_ns_from_disk(struct nvme_ns_head *head, int idx)
srcu_read_unlock(&head->srcu, idx);
}
static int nvme_open(struct block_device *bdev, fmode_t mode)
static int nvme_ns_open(struct nvme_ns *ns)
{
struct nvme_ns *ns = bdev->bd_disk->private_data;
/* should never be called due to GENHD_FL_HIDDEN */
if (WARN_ON_ONCE(nvme_ns_head_multipath(ns->head)))
@ -1503,14 +1502,23 @@ fail:
return -ENXIO;
}
static void nvme_release(struct gendisk *disk, fmode_t mode)
static void nvme_ns_release(struct nvme_ns *ns)
{
struct nvme_ns *ns = disk->private_data;
module_put(ns->ctrl->ops->module);
nvme_put_ns(ns);
}
static int nvme_open(struct block_device *bdev, fmode_t mode)
{
return nvme_ns_open(bdev->bd_disk->private_data);
}
static void nvme_release(struct gendisk *disk, fmode_t mode)
{
nvme_ns_release(disk->private_data);
}
int nvme_getgeo(struct block_device *bdev, struct hd_geometry *geo)
{
/* some standard values */