diff mbox series

[RFC,3/5] hv_balloon: update the NR_BALLOON_PAGES state

Message ID 20250312000700.184573-4-npache@redhat.com (mailing list archive)
State New
Headers show
Series track memory used by balloon drivers | expand

Commit Message

Nico Pache March 12, 2025, 12:06 a.m. UTC 
Update the NR_BALLOON_PAGES counter when pages are added to or
removed from the Hyper-V balloon.

Signed-off-by: Nico Pache <npache@redhat.com>
---
 drivers/hv/hv_balloon.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
index fec2f18679e3..2b4080e51f97 100644
--- a/drivers/hv/hv_balloon.c
+++ b/drivers/hv/hv_balloon.c
@@ -1192,6 +1192,7 @@  static void free_balloon_pages(struct hv_dynmem_device *dm,
 		__ClearPageOffline(pg);
 		__free_page(pg);
 		dm->num_pages_ballooned--;
+		mod_node_page_state(page_pgdat(pg), NR_BALLOON_PAGES, -1);
 		adjust_managed_page_count(pg, 1);
 	}
 }
@@ -1221,6 +1222,7 @@  static unsigned int alloc_balloon_pages(struct hv_dynmem_device *dm,
 			return i * alloc_unit;
 
 		dm->num_pages_ballooned += alloc_unit;
+		mod_node_page_state(page_pgdat(pg), NR_BALLOON_PAGES, alloc_unit);
 
 		/*
 		 * If we allocatted 2M pages; split them so we