Introduce a wrapper function pfn_to_online_folio(), which calls
pfn_to_online_page() and returns the folio of the page found,
or null if no page.
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
---
include/linux/memory_hotplug.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 9fcbf5706595..e841e4fb52a7 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -265,6 +265,13 @@ static inline void pgdat_kswapd_unlock(pg_data_t *pgdat) {}
static inline void pgdat_kswapd_lock_init(pg_data_t *pgdat) {}
#endif /* ! CONFIG_MEMORY_HOTPLUG */
+static inline struct folio *pfn_to_online_folio(unsigned long pfn)
+{
+ struct page *page = pfn_to_online_page(pfn);
+
+ return page ? page_folio(page) : NULL;
+}
+
/*
* Keep this declaration outside CONFIG_MEMORY_HOTPLUG as some
* platforms might override and use arch_get_mappable_range()
--
2.35.3
