[RFC PATCH 5/8] dax/kmem: add the hotunplug opt-in (CAP_HOTUNPLUG) for private nodes

[Gregory Price]

Add the "hotunplug" setting for NODE_PRIVATE_CAP_HOTUNPLUG, so the
node's memory may be bulk-evacuated for device removal.

Signed-off-by: Gregory Price <gourry@xxxxxxxxxx>
---
 drivers/dax/kmem.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/dax/kmem.c b/drivers/dax/kmem.c
index 8023db23e2f99..3892ad44d4e46 100644
--- a/drivers/dax/kmem.c
+++ b/drivers/dax/kmem.c
@@ -630,11 +630,13 @@ static DEVICE_ATTR_RW(name)
 
 KMEM_PRIVATE_CAP_ATTR(reclaim, NODE_PRIVATE_CAP_RECLAIM);
 KMEM_PRIVATE_CAP_ATTR(user_numa, NODE_PRIVATE_CAP_USER_NUMA);
+KMEM_PRIVATE_CAP_ATTR(hotunplug, NODE_PRIVATE_CAP_HOTUNPLUG);
 
 /* Per-service opt-ins. Visibility toggled by 'private' control */
 static struct attribute *dax_kmem_private_attrs[] = {
 	&dev_attr_reclaim.attr,
 	&dev_attr_user_numa.attr,
+	&dev_attr_hotunplug.attr,
 	NULL,
 };
 static const struct attribute_group dax_kmem_private_group = {
-- 
2.53.0-Meta