Re: [PATCH 2/4] memory-hotplug: add node_device_release
From: Ni zhan Chen <hidden>
Date: 2012-09-27 10:38:42
Also in:
linux-mm
On 09/27/2012 01:45 PM, wency@cn.fujitsu.com wrote:
From: Yasuaki Ishimatsu <redacted> 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()
looks reasonable to me.
quoted hunk ↗ jump to hunk
CC: David Rientjes <rientjes@google.com> CC: Jiang Liu <redacted> CC: Len Brown <redacted> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Paul Mackerras <redacted> Cc: Minchan Kim <redacted> CC: Andrew Morton <akpm@linux-foundation.org> CC: KOSAKI Motohiro <redacted> Signed-off-by: Yasuaki Ishimatsu <redacted> Signed-off-by: Wen Congyang <redacted> --- drivers/base/node.c | 11 +++++++++++ 1 files changed, 11 insertions(+), 0 deletions(-)diff --git a/drivers/base/node.c b/drivers/base/node.c index af1a177..07523fb 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c@@ -252,6 +252,16 @@ 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); + +#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HUGETLBFS) + flush_work(&node_dev->node_work); +#endif + + memset(node_dev, 0, sizeof(struct node)); +} /* * register_node - Setup a sysfs device for a node.@@ -265,6 +275,7 @@ 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){