diff options
Diffstat (limited to 'drivers/xen/balloon.c')
| -rw-r--r-- | drivers/xen/balloon.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index 976c6cdf9ee6..163f7f1d70f1 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -84,7 +84,7 @@ module_param(balloon_boot_timeout, uint, 0444); #ifdef CONFIG_XEN_BALLOON_MEMORY_HOTPLUG static int xen_hotplug_unpopulated; -static struct ctl_table balloon_table[] = { +static const struct ctl_table balloon_table[] = { { .procname = "hotplug_unpopulated", .data = &xen_hotplug_unpopulated, @@ -146,7 +146,8 @@ static DECLARE_WAIT_QUEUE_HEAD(balloon_wq); /* balloon_append: add the given page to the balloon. */ static void balloon_append(struct page *page) { - __SetPageOffline(page); + if (!PageOffline(page)) + __SetPageOffline(page); /* Lowmem is re-populated first, so highmem pages go at list tail. */ if (PageHighMem(page)) { @@ -412,7 +413,11 @@ static enum bp_state increase_reservation(unsigned long nr_pages) xenmem_reservation_va_mapping_update(1, &page, &frame_list[i]); - /* Relinquish the page back to the allocator. */ + /* + * Relinquish the page back to the allocator. Note that + * some pages, including ones added via xen_online_page(), might + * not be marked reserved; free_reserved_page() will handle that. + */ free_reserved_page(page); } @@ -672,7 +677,6 @@ EXPORT_SYMBOL(xen_free_ballooned_pages); static void __init balloon_add_regions(void) { -#if defined(CONFIG_XEN_PV) unsigned long start_pfn, pages; unsigned long pfn, extra_pfn_end; unsigned int i; @@ -696,7 +700,6 @@ static void __init balloon_add_regions(void) balloon_stats.total_pages += extra_pfn_end - start_pfn; } -#endif } static int __init balloon_init(void) |