[PATCH 19/27] f2fs: Use a folio throughout __get_meta_page()

["Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>]

Use f2fs_grab_cache_folio() to get a folio and use it throughout,
removing seven calls to compound_head() and a reference to page->mapping.

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
 fs/f2fs/checkpoint.c | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index bd890738b94d..75b7196d2c81 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -58,7 +58,7 @@ static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index,
 							bool is_meta)
 {
 	struct address_space *mapping = META_MAPPING(sbi);
-	struct page *page;
+	struct folio *folio;
 	struct f2fs_io_info fio = {
 		.sbi = sbi,
 		.type = META,
@@ -74,37 +74,37 @@ static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index,
 	if (unlikely(!is_meta))
 		fio.op_flags &= ~REQ_META;
 repeat:
-	page = f2fs_grab_cache_page(mapping, index, false);
-	if (!page) {
+	folio = f2fs_grab_cache_folio(mapping, index, false);
+	if (IS_ERR(folio)) {
 		cond_resched();
 		goto repeat;
 	}
-	if (PageUptodate(page))
+	if (folio_test_uptodate(folio))
 		goto out;
 
-	fio.page = page;
+	fio.page = &folio->page;
 
 	err = f2fs_submit_page_bio(&fio);
 	if (err) {
-		f2fs_put_page(page, 1);
+		f2fs_folio_put(folio, true);
 		return ERR_PTR(err);
 	}
 
 	f2fs_update_iostat(sbi, NULL, FS_META_READ_IO, F2FS_BLKSIZE);
 
-	lock_page(page);
-	if (unlikely(page->mapping != mapping)) {
-		f2fs_put_page(page, 1);
+	folio_lock(folio);
+	if (unlikely(folio->mapping != mapping)) {
+		f2fs_folio_put(folio, true);
 		goto repeat;
 	}
 
-	if (unlikely(!PageUptodate(page))) {
-		f2fs_handle_page_eio(sbi, page_folio(page), META);
-		f2fs_put_page(page, 1);
+	if (unlikely(!folio_test_uptodate(folio))) {
+		f2fs_handle_page_eio(sbi, folio, META);
+		f2fs_folio_put(folio, true);
 		return ERR_PTR(-EIO);
 	}
 out:
-	return page;
+	return &folio->page;
 }
 
 struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
-- 
2.47.2