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iomap: Convert iomap_migrate_page() to use folios

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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>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2021-05-07 15:08:09 -04:00
parent e735c00794
commit 589110e897
1 changed files with 7 additions and 5 deletions
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12
fs/iomap/buffered-io.c
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@ -504,19 +504,21 @@ 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_test_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);