@@ -102,6 +102,7 @@ extern unsigned long __offline_isolated_pages(unsigned long start_pfn,
typedef void (*online_page_callback_t)(struct page *page, unsigned int order);
+extern void generic_online_page(struct page *page, unsigned int order);
extern int set_online_page_callback(online_page_callback_t callback);
extern int restore_online_page_callback(online_page_callback_t callback);
@@ -49,8 +49,6 @@
* and restore_online_page_callback() for generic callback restore.
*/
-static void generic_online_page(struct page *page, unsigned int order);
-
static online_page_callback_t online_page_callback = generic_online_page;
static DEFINE_MUTEX(online_page_callback_lock);
@@ -616,7 +614,7 @@ void __online_page_free(struct page *page)
}
EXPORT_SYMBOL_GPL(__online_page_free);
-static void generic_online_page(struct page *page, unsigned int order)
+void generic_online_page(struct page *page, unsigned int order)
{
kernel_map_pages(page, 1 << order, 1);
__free_pages_core(page, order);
@@ -626,6 +624,7 @@ static void generic_online_page(struct page *page, unsigned int order)
totalhigh_pages_add(1UL << order);
#endif
}
+EXPORT_SYMBOL_GPL(generic_online_page);
static int online_pages_range(unsigned long start_pfn, unsigned long nr_pages,
void *arg)
Let's expose generic_online_page() so online_page_callback users can simply fallback to the generic implementation when actually deciding to online the pages. Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Oscar Salvador <osalvador@suse.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Pavel Tatashin <pasha.tatashin@soleen.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Qian Cai <cai@lca.pw> Signed-off-by: David Hildenbrand <david@redhat.com> --- include/linux/memory_hotplug.h | 1 + mm/memory_hotplug.c | 5 ++--- 2 files changed, 3 insertions(+), 3 deletions(-)