[PATCH 2/3] nfs: Use a folio in nfs_get_link()

["Matthew Wilcox (Oracle)" <willy@infradead.org>]

Mirror the changes to __page_get_link() by retrieving a folio from
the page cache instead of a page.  Removes two hidden calls to
compound_head().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 fs/nfs/symlink.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/fs/nfs/symlink.c b/fs/nfs/symlink.c
index 1c62a5a9f51d..004a8f6c568e 100644
--- a/fs/nfs/symlink.c
+++ b/fs/nfs/symlink.c
@@ -40,31 +40,31 @@ static const char *nfs_get_link(struct dentry *dentry,
 				struct inode *inode,
 				struct delayed_call *done)
 {
-	struct page *page;
+	struct folio *folio;
 	void *err;
 
 	if (!dentry) {
 		err = ERR_PTR(nfs_revalidate_mapping_rcu(inode));
 		if (err)
 			return err;
-		page = find_get_page(inode->i_mapping, 0);
-		if (!page)
+		folio = filemap_get_folio(inode->i_mapping, 0);
+		if (IS_ERR(folio))
 			return ERR_PTR(-ECHILD);
-		if (!PageUptodate(page)) {
-			put_page(page);
+		if (!folio_test_uptodate(folio)) {
+			folio_put(folio);
 			return ERR_PTR(-ECHILD);
 		}
 	} else {
 		err = ERR_PTR(nfs_revalidate_mapping(inode, inode->i_mapping));
 		if (err)
 			return err;
-		page = read_cache_page(&inode->i_data, 0, nfs_symlink_filler,
+		folio = read_cache_folio(&inode->i_data, 0, nfs_symlink_filler,
 				NULL);
-		if (IS_ERR(page))
-			return ERR_CAST(page);
+		if (IS_ERR(folio))
+			return ERR_CAST(folio);
 	}
-	set_delayed_call(done, page_put_link, page);
-	return page_address(page);
+	set_delayed_call(done, page_put_link, &folio->page);
+	return folio_address(folio);
 }
 
 /*
-- 
2.47.2