mmzone: introduce folio_is_zone_movable()

Patch series "Replace is_longterm_pinnable_page()", v2.

This patchset introduces some more helper functions for the folio
conversions, and converts all callers of is_longterm_pinnable_page() to
use folios.


This patch (of 5):

Introduce folio_is_zone_movable() to act as a folio equivalent for
is_zone_movable_page().  This is to assist in later folio conversions.

Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Vishal Moola (Oracle) <[email protected]>
Reviewed-by: Matthew Wilcox (Oracle) <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: VMoola

include/linux/mmzone.h

@@ -1116,6 +1116,11 @@ static inline bool is_zone_movable_page(const struct page *page)
 {
 	return page_zonenum(page) == ZONE_MOVABLE;
 }
+
+static inline bool folio_is_zone_movable(const struct folio *folio)
+{
+	return folio_zonenum(folio) == ZONE_MOVABLE;
+}
 #endif
 
 /*