[dm-devel] [PATCH RESEND v6 2/9] dax: Introduce holder for dax_device
Jane Chu
jane.chu at oracle.com
Fri Aug 6 01:02:34 UTC 2021
On 7/30/2021 3:01 AM, Shiyang Ruan wrote:
> --- a/drivers/dax/super.c
> +++ b/drivers/dax/super.c
> @@ -214,6 +214,8 @@ enum dax_device_flags {
> * @cdev: optional character interface for "device dax"
> * @host: optional name for lookups where the device path is not available
> * @private: dax driver private data
> + * @holder_rwsem: prevent unregistration while holder_ops is in progress
> + * @holder_data: holder of a dax_device: could be filesystem or mapped device
> * @flags: state and boolean properties
Perhaps add two documentary lines for @ops and @holder_ops?
> */
> struct dax_device {
> @@ -222,8 +224,11 @@ struct dax_device {
> struct cdev cdev;
> const char *host;
> void *private;
> + struct rw_semaphore holder_rwsem;
> + void *holder_data;
> unsigned long flags;
> const struct dax_operations *ops;
> + const struct dax_holder_operations *holder_ops;
> };
thanks,
-jane
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