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/20230614021312.34085-1-vishal.moola@gmail.com
Link: https://lkml.kernel.org/r/20230614021312.34085-2-vishal.moola@gmail.com
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 5a7ada0..f109024 100644 (file)
--- a/include/linux/mmzone.h
+++ b/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
 
 /*