Both callers already have a folio, so pass it in and use it directly.
Removes a lot of hidden calls to compound_head().
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
fs/nilfs2/page.c | 50 +++++++++++++++++++++++++-----------------------
1 file changed, 26 insertions(+), 24 deletions(-)
diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c
index 1c075bd906c9..696215d899bf 100644
--- a/fs/nilfs2/page.c
+++ b/fs/nilfs2/page.c
@@ -184,30 +184,32 @@ void nilfs_page_bug(struct page *page)
}
/**
- * nilfs_copy_page -- copy the page with buffers
- * @dst: destination page
- * @src: source page
- * @copy_dirty: flag whether to copy dirty states on the page's buffer heads.
+ * nilfs_copy_folio -- copy the folio with buffers
+ * @dst: destination folio
+ * @src: source folio
+ * @copy_dirty: flag whether to copy dirty states on the folio's buffer heads.
*
- * This function is for both data pages and btnode pages. The dirty flag
- * should be treated by caller. The page must not be under i/o.
- * Both src and dst page must be locked
+ * This function is for both data folios and btnode folios. The dirty flag
+ * should be treated by caller. The folio must not be under i/o.
+ * Both src and dst folio must be locked
*/
-static void nilfs_copy_page(struct page *dst, struct page *src, int copy_dirty)
+static void nilfs_copy_folio(struct folio *dst, struct folio *src,
+ bool copy_dirty)
{
struct buffer_head *dbh, *dbufs, *sbh;
unsigned long mask = NILFS_BUFFER_INHERENT_BITS;
- BUG_ON(PageWriteback(dst));
+ BUG_ON(folio_test_writeback(dst));
- sbh = page_buffers(src);
- if (!page_has_buffers(dst))
- create_empty_buffers(dst, sbh->b_size, 0);
+ sbh = folio_buffers(src);
+ dbh = folio_buffers(dst);
+ if (!dbh)
+ dbh = folio_create_empty_buffers(dst, sbh->b_size, 0);
if (copy_dirty)
mask |= BIT(BH_Dirty);
- dbh = dbufs = page_buffers(dst);
+ dbufs = dbh;
do {
lock_buffer(sbh);
lock_buffer(dbh);
@@ -218,16 +220,16 @@ static void nilfs_copy_page(struct page *dst, struct page *src, int copy_dirty)
dbh = dbh->b_this_page;
} while (dbh != dbufs);
- copy_highpage(dst, src);
+ folio_copy(dst, src);
- if (PageUptodate(src) && !PageUptodate(dst))
- SetPageUptodate(dst);
- else if (!PageUptodate(src) && PageUptodate(dst))
- ClearPageUptodate(dst);
- if (PageMappedToDisk(src) && !PageMappedToDisk(dst))
- SetPageMappedToDisk(dst);
- else if (!PageMappedToDisk(src) && PageMappedToDisk(dst))
- ClearPageMappedToDisk(dst);
+ if (folio_test_uptodate(src) && !folio_test_uptodate(dst))
+ folio_mark_uptodate(dst);
+ else if (!folio_test_uptodate(src) && folio_test_uptodate(dst))
+ folio_clear_uptodate(dst);
+ if (folio_test_mappedtodisk(src) && !folio_test_mappedtodisk(dst))
+ folio_set_mappedtodisk(dst);
+ else if (!folio_test_mappedtodisk(src) && folio_test_mappedtodisk(dst))
+ folio_clear_mappedtodisk(dst);
do {
unlock_buffer(sbh);
@@ -269,7 +271,7 @@ int nilfs_copy_dirty_pages(struct address_space *dmap,
NILFS_PAGE_BUG(&folio->page,
"found empty page in dat page cache");
- nilfs_copy_page(&dfolio->page, &folio->page, 1);
+ nilfs_copy_folio(dfolio, folio, true);
filemap_dirty_folio(folio_mapping(dfolio), dfolio);
folio_unlock(dfolio);
@@ -314,7 +316,7 @@ void nilfs_copy_back_pages(struct address_space *dmap,
if (!IS_ERR(dfolio)) {
/* overwrite existing folio in the destination cache */
WARN_ON(folio_test_dirty(dfolio));
- nilfs_copy_page(&dfolio->page, &folio->page, 0);
+ nilfs_copy_folio(dfolio, folio, false);
folio_unlock(dfolio);
folio_put(dfolio);
/* Do we not need to remove folio from smap here? */
--
2.40.1
