[PATCH v4 8/8] hv_balloon: try to merge system ram resources

[David Hildenbrand <david@xxxxxxxxxx>]

Let's try to merge system ram resources we add, to minimize the number
of resources in /proc/iomem. We don't care about the boundaries of
individual chunks we added.

Reviewed-by: Wei Liu <wei.liu@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: "K. Y. Srinivasan" <kys@xxxxxxxxxxxxx>
Cc: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
Cc: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>
Cc: Wei Liu <wei.liu@xxxxxxxxxx>
Cc: Pankaj Gupta <pankaj.gupta.linux@xxxxxxxxx>
Cc: Baoquan He <bhe@xxxxxxxxxx>
Cc: Wei Yang <richardw.yang@xxxxxxxxxxxxxxx>
Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
---
 drivers/hv/hv_balloon.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
index 3c0d52e244520..b64d2efbefe71 100644
--- a/drivers/hv/hv_balloon.c
+++ b/drivers/hv/hv_balloon.c
@@ -726,7 +726,7 @@ static void hv_mem_hot_add(unsigned long start, unsigned 
long size,
 
                nid = memory_add_physaddr_to_nid(PFN_PHYS(start_pfn));
                ret = add_memory(nid, PFN_PHYS((start_pfn)),
-                               (HA_CHUNK << PAGE_SHIFT), MHP_NONE);
+                               (HA_CHUNK << PAGE_SHIFT), MEMHP_MERGE_RESOURCE);
 
                if (ret) {
                        pr_err("hot_add memory failed error is %d\n", ret);
-- 
2.26.2