[PATCH V3] nvme: enable ro namespace for ZNS without append

[Keith Busch]

On Tue, Nov 10, 2020 at 10:07:08PM +0100, javier at javigon.com wrote:
> -	if (id->nsattr & NVME_NS_ATTR_RO)
> +	if (id->nsattr & NVME_NS_ATTR_RO || test_bit(NVME_NS_FORCE_RO, &ns->flags))
>  		set_disk_ro(disk, true);

If the FORCE_RO flag is set, the disk is set to read-only. If that flag
is later cleared, nothing clears the disk's read-only setting.

> +	/* Refresh effects log page to check for changes on append support */
> +	status = nvme_get_effects_log(ns->ctrl, ns->head->ids.csi, &ns->head->effects);

That function just returns the cached log; no refresh occurs there.