[PATCH v13 106/137] iomap: Convert iomap_migrate_page to use folios

Matthew Wilcox (Oracle)
2021-07-12T04:03:37Z

The arguments are still pages for now, but we can use folios internally
and cut out a lot of calls to compound_head().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
fs/iomap/buffered-io.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index c2736f36db76..bd811b3dbe86 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -490,19 +490,21 @@ int
iomap_migrate_page(struct address_space *mapping, struct page *newpage,
struct page *page, enum migrate_mode mode)
{
+ struct folio *folio = page_folio(page);
+ struct folio *newfolio = page_folio(newpage);
int ret;

- ret = migrate_page_move_mapping(mapping, newpage, page, 0);
+ ret = folio_migrate_mapping(mapping, newfolio, folio, 0);
if (ret != MIGRATEPAGE_SUCCESS)
return ret;

- if (page_has_private(page))
- attach_page_private(newpage, detach_page_private(page));
+ if (folio_private(folio))
+ folio_attach_private(newfolio, folio_detach_private(folio));

if (mode != MIGRATE_SYNC_NO_COPY)
- migrate_page_copy(newpage, page);
+ folio_migrate_copy(newfolio, folio);
else
- migrate_page_states(newpage, page);
+ folio_migrate_flags(newfolio, folio);
return MIGRATEPAGE_SUCCESS;
}
EXPORT_SYMBOL_GPL(iomap_migrate_page);
--
2.30.2