On 2012/8/20 17:35, wency@xxxxxxxxxxxxxx wrote:
> From: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
>
> When calling unregister_node(), the function shows following message at
> device_release().
>
> Device 'node2' does not have a release() function, it is broken and must be
> fixed.
>
> So the patch implements node_device_release()
>
> CC: David Rientjes <rientjes@xxxxxxxxxx>
> CC: Jiang Liu <liuj97@xxxxxxxxx>
> CC: Len Brown <len.brown@xxxxxxxxx>
> CC: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
> CC: Paul Mackerras <paulus@xxxxxxxxx>
> CC: Christoph Lameter <cl@xxxxxxxxx>
> Cc: Minchan Kim <minchan.kim@xxxxxxxxx>
> CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> CC: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
> Signed-off-by: Wen Congyang <wency@xxxxxxxxxxxxxx>
> ---
> drivers/base/node.c | 8 ++++++++
> 1 files changed, 8 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/base/node.c b/drivers/base/node.c
> index af1a177..9bc2f57 100644
> --- a/drivers/base/node.c
> +++ b/drivers/base/node.c
> @@ -252,6 +252,13 @@ static inline void hugetlb_register_node(struct node *node) {}
> static inline void hugetlb_unregister_node(struct node *node) {}
> #endif
>
> +static void node_device_release(struct device *dev)
> +{
> + struct node *node_dev = to_node(dev);
> +
> + flush_work(&node_dev->node_work);
Hi Congyang,
I think this should be:
#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HUGETLBFS)
flush_work(&node_dev->node_work);
#endif
As struct node defined in node.h:
struct node {
struct sys_device sysdev;
#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HUGETLBFS)
struct work_struct node_work;
#endif
};
Thanks
Jianguo Wu
> + memset(node_dev, 0, sizeof(struct node));
> +}
>
> /*
> * register_node - Setup a sysfs device for a node.
> @@ -265,6 +272,7 @@ int register_node(struct node *node, int num, struct node *parent)
>
> node->dev.id = num;
> node->dev.bus = &node_subsys;
> + node->dev.release = node_device_release;
> error = device_register(&node->dev);
>
> if (!error){
>
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