On Tue, Mar 11, 2025 at 06:06:59PM -0600, Nico Pache wrote:
> Update the NR_BALLOON_PAGES counter when pages are added to or
> removed from the VMware balloon.
>
> Signed-off-by: Nico Pache <npache@xxxxxxxxxx>
> ---
> drivers/misc/vmw_balloon.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c
> index c817d8c21641..2c70b08c6fb3 100644
> --- a/drivers/misc/vmw_balloon.c
> +++ b/drivers/misc/vmw_balloon.c
> @@ -673,6 +673,8 @@ static int vmballoon_alloc_page_list(struct vmballoon *b,
>
> vmballoon_stats_page_inc(b, VMW_BALLOON_PAGE_STAT_ALLOC,
> ctl->page_size);
> + mod_node_page_state(page_pgdat(page), NR_BALLOON_PAGES,
> + vmballoon_page_in_frames(ctl->page_size));
same issue as virtio I think - this counts frames not pages.
> }
>
> if (page) {
> @@ -915,6 +917,8 @@ static void vmballoon_release_page_list(struct list_head *page_list,
> list_for_each_entry_safe(page, tmp, page_list, lru) {
> list_del(&page->lru);
> __free_pages(page, vmballoon_page_order(page_size));
> + mod_node_page_state(page_pgdat(page), NR_BALLOON_PAGES,
> + -vmballoon_page_in_frames(page_size));
> }
>
> if (n_pages)
> @@ -1129,7 +1133,6 @@ static void vmballoon_inflate(struct vmballoon *b)
>
> /* Update the balloon size */
> atomic64_add(ctl.n_pages * page_in_frames, &b->size);
> -
unrelated change
> vmballoon_enqueue_page_list(b, &ctl.pages, &ctl.n_pages,
> ctl.page_size);
>
> --
> 2.48.1
