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

[Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx>]

On Fri, Sep 11, 2020 at 12:34:59PM +0200, David Hildenbrand wrote:
>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>
>Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>

Reviewed-by: Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx>

>---
> 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

-- 
Wei Yang
Help you, Help me